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

Abstract

An operation method of a device in a wireless communication system and the device are provided. The apparatus receives a first message configuring a specific downlink reception resource, receives a second message indicating a full duplex (FD) time resource, and performs an FD operation based on the first message and the second message. If the specific downlink reception resource is configured as the FD time resource by the second message, the terminal determines the specific downlink reception resource as a non-FD time resource in which the FD operation is not performed and performs the corresponding operation.

Description

Technical Field

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

[0002] As more and more communication devices require greater communication capacity, improved mobile broadband communications relative to existing radio access technologies are needed. Moreover, large-scale machine type communications (MTC) that provide various services by connecting many devices and multiple objects is also one of the main issues to be considered in the next generation of communications. In addition, the design of communication systems that take into account services / UEs that are sensitive to reliability / latency is under discussion. The introduction of next-generation radio access technologies that take into account enhanced mobile broadband communications (eMBB), massive MTC (mMTC) and ultra-reliable low latency communications (URLLC) is under discussion. In this disclosure, for convenience, such new technologies may be referred to as new radio access technologies (new RAT or NR).

[0003] In NR, full-duplex (FD) operation can be performed. When FD operation is performed, downlink reception and uplink transmission can occur simultaneously within a given time resource. Half-duplex (HD) operation differs in that only one of downlink reception and uplink transmission can be performed in a given time resource. For FD operation, i) some frequency resources in the same time resource can be allocated as downlink subbands and other frequency resources can be allocated as uplink subbands (this can be referred to as subband FD or SBFD), or ii) frequency resources that can be used for both downlink reception and uplink transmission in the same time resource can be allocated (this can be referred to as spectrum sharing FD or SSFD).

[0004] In FD environments such as SBFD and SSFD, from the cell's perspective, both downlink and uplink resources can exist in the same time resources. Therefore, the base station can perform uplink reception while transmitting downlink signals. When the base station transmits the synchronization signal / physical broadcast channel (SS / PBCH) in the time resources in which the base station performs FD operation, the base station can perform uplink reception while transmitting the SS / PBCH.

[0005] From the perspective of the user equipment (UE), there may be a case where the resources used to receive the SS / PBCH are set as FD time resources. For example, the resources used to receive the SS / PBCH can be set to the first period, and the FD time resources can be set to the second period. In this case, the first period and the second period can be set independently, so some of the periodic resources used to receive the SS / PBCH can be set as FD time resources. In addition, the resources used to receive a specific control resource set (CORESET) or the resources where specific measurements should be performed can also be set as FD time resources.

[0006] In this case, there is a problem of ambiguity between the base station and the UE because it is unclear how the UE will actually operate in the resources set as the FD time resources. Summary of the Invention

[0007] Technical issues

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

[0009] Technical Solution

[0010] A method for operating a device in a wireless communication system and a device using the method are provided. According to the method, a user equipment (UE) receives a first message configuring a specific downlink reception resource, receives a second message notifying a full-duplex (FD) time resource, and performs an FD operation based on the first message and the second message. Based on the configuration of the specific downlink reception resource as an FD time resource by the second message, the UE determines the specific downlink reception resource as a non-FD time resource in which the FD operation is not performed.

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

[0012] In another aspect, a method for operating a base station and a base station using the method are provided. According to the base station operating method, the base station sends a first message to a user equipment (UE) to configure specific downlink reception resources, sends a second message to the UE to notify full-duplex (FD) time resources, and performs FD operations with the UE based on the first message and the second message. Based on configuring the specific downlink reception resources as FD time resources via the second message, the base station does not perform FD operations with the UE in the specific downlink reception resources.

[0013] Beneficial effects

[0014] According to the method of the present disclosure, when an SBFD symbol can be periodically set and specific downlink reception should be performed in the symbol (for example, when SS / PBCH is transmitted by the base station / network, when CORESET#0 is transmitted, or when a signal for specific measurement should be transmitted, etc.), the UE processes the symbol as a non-SBFD symbol and only performs a wideband downlink reception operation, thereby enabling the UE to stably perform SS / PBCH reception.

[0015] Additionally, the method prevents ambiguity in operations between the base station and the UE. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A wireless communication system to which the present disclosure can be applied is illustrated.

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

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

[0019] Figure 4 The system structure of the next-generation radio access network (NG-RAN) to which NR is applied is illustrated.

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

[0021] Figure 6 This section illustrates a frame structure applicable to NR.

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

[0023] Figure 8 CORESET is instantiated.

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

[0025] Figure 10 The structure of a self-contained time slot is illustrated.

[0026] Figure 11 Physical channels and typical signal transmission are illustrated.

[0027] Figure 12 An example of how full duplex is applied within a carrier is illustrated.

[0028] Figure 13An example is shown in which time resources for half-duplex (HD) operation and time resources for full-duplex (FD) operation (eg, SBFD or SSFD) coexist.

[0029] Figure 14 Examples of first time resources, second time resources, first frequency resources, and second frequency resources are shown.

[0030] Figure 15 Another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource is shown.

[0031] Figure 16 An operation method of a UE in a wireless communication system is shown.

[0032] Figure 17 An example of limiting the FD operation of the UE in downlink reception resources is shown.

[0033] Figure 18 The signaling process and operation method between the base station and the UE are shown.

[0034] Figure 19 A wireless device that can be applied to this specification is shown.

[0035] Figure 20 An example of a signal processing module structure is shown.

[0036] Figure 21 Another example of the structure of the signal processing module in the transmitting device is shown.

[0037] Figure 22 An example of a wireless communication device according to an implementation example of the present disclosure is shown.

[0038] Figure 23 An example of a processor 2000 is shown.

[0039] Figure 24 An example of a processor 3000 is shown.

[0040] Figure 25 Another example of a wireless device is shown.

[0041] Figure 26 Another example of a wireless device applied to this specification is shown.

[0042] Figure 27 A handheld device is shown that is used in this specification.

[0043] Figure 28 A communication system 1 applied to this specification is shown. DETAILED DESCRIPTION

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

[0045] A slash ( / ) or a comma used in this specification may mean "and / or". For example, "A / B" may mean "A and / or B". Thus, "A / B" may mean "only A", "only B", or "both A and B". For example, "A, B, C" may mean "A, B, or C".

[0046] In the present specification, “at least one of A and B” may mean “only A”, “only B”, or “both A and B”. In addition, in the present specification, the expression “at least one of A or B” or “at least one of A and / or B” may be interpreted as “at least one of A and B”.

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

[0048] In addition, the brackets used in this specification may mean "for example". Specifically, when it is indicated as "control information (PDCCH)", this may mean that "PDCCH" is proposed as an example of "control information". In other words, the "control information" of this specification is not limited to "PDCCH", and "PDDCH" may be proposed as an example of "control information". Specifically, when it is indicated as "control information (i.e., PDCCH)", this may also mean that "PDCCH" is proposed as an example of "control information".

[0049] The technical features described individually in one drawing in this specification may be implemented individually or simultaneously.

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

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

[0052] The BSs are interconnected via an X2 interface. The BSs are also connected to an Evolved Packet Core (EPC) 30 via an S1 interface, more specifically, to a Mobility Management Entity (MME) via S1-MME and to a Serving Gateway (S-GW) via S1-U.

[0053] The EPC 30 includes the MME, S-GW, and Packet Data Network Gateway (P-GW). The MME has UE access information and UE capability information, which is generally used for UE mobility management. The S-GW is a gateway with the E-UTRAN as its endpoint. The P-GW is a gateway with the PDN as its endpoint.

[0054] The radio interface protocol layers between the UE and the network can be divided into Layer 1 (L1), Layer 2 (L2), and Layer 3 (L3) based on the lower three layers of the well-known Open Systems Interconnection (OSI) model for communication systems. The physical layer (PHY) of Layer 1 provides information transmission services using physical channels, while the radio resource control layer (RRC) of Layer 3 controls radio resources between the UE and the network. To this end, the RRC layer exchanges RRC messages between the UE and the base station.

[0055] Figure 2 is a block diagram illustrating a radio protocol architecture for a user plane. Figure 3 Figure 1 is a block diagram showing the radio protocol architecture for the control plane. The user plane is a protocol stack for user data transmission. The control plane is a protocol stack for control signal transmission.

[0056] Reference Figure 2 and Figure 3 The PHY layer provides information transfer services to upper layers (higher layers) via physical channels. The PHY layer is connected to the media access control (MAC) layer, a higher layer of the PHY layer, via transport channels. Data is transferred between the MAC and PHY layers via transport channels. Transport channels are categorized based on how data is transmitted over the radio interface and the characteristics of the data.

[0057] Data moves between different PHY layers (ie, a transmitter's PHY layer and a receiver's PHY layer) through a physical channel. The physical channel may be modulated according to an Orthogonal Frequency Division Multiplexing (OFDM) scheme and use time and frequency as radio resources.

[0058] The functions of the MAC layer include mapping between logical channels and transport channels, as well as multiplexing and demultiplexing into transport blocks provided on the transport channels of MAC service data units (SDUs) belonging to logical channels through physical channels. The MAC layer provides services to the radio link control (RLC) layer through logical channels.

[0059] The RLC layer functions include concatenation, segmentation, and reassembly of RLC SDUs. To ensure the various types of quality of service (QoS) required for radio bearers (RBs), the RLC layer provides three operating modes: transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0060] The RRC layer is defined only on the control plane. It is associated with the configuration, reconfiguration, and release of radio bearers and is responsible for controlling logical, transport, and physical (PHY) channels. RBs represent logical routes provided by Layer 1 (the PHY layer) and Layer 2 (the MAC layer, RLC layer, and PDCP layer) for transmitting data between the UE and the network.

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

[0062] RB configuration defines the characteristics of the radio protocol layer and channel to provide specific services and configures detailed parameters and operating methods. RBs are divided into two types: signaling RBs (SRBs) and data RBs (DRBs). SRBs are used as channels for transmitting RRC messages on the control plane, while DRBs are used as channels for transmitting user data on the user plane.

[0063] If an RRC connection is established between the RRC layer of the UE and the RRC layer of the E-UTRAN, the UE is in the RRC connected state. Otherwise, the UE is in the RRC idle state.

[0064] The downlink transport channels used to send data from the network to the UE include the broadcast channel (BCH) for sending system information and the downlink shared channel (SCH) for sending user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services can be sent via the downlink SCH or via another downlink multicast channel (MCH). In addition, the UL transmission channels used to send data from the UE to the network include the random access channel (RACH) for sending initial control messages and the uplink shared channel (SCH) for sending user traffic or control messages.

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

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

[0067] The new radio access technology (New RAT, NR) will be described below.

[0068] As more and more communication devices require greater communication capacity, there is a need for improved mobile broadband communications relative to existing radio access technologies. Moreover, large-scale machine type communications (MTC) that provide various services by connecting many devices and multiple objects is also one of the main issues to be considered in the next generation of communications. In addition, the design of communication systems that take into account services / UEs that are sensitive to reliability / latency is under discussion. The introduction of next-generation radio access technologies that take into account enhanced mobile broadband communications (eMBB), massive MTC (mMTC) and ultra-reliable low latency communications (URLLC) is under discussion. In this disclosure, for convenience, such new technologies may be referred to as new radio access technologies (new RAT or NR).

[0069] Figure 4 The system structure of the next-generation radio access network (NG-RAN) to which NR is applied is illustrated.

[0070] Reference Figure 4 , NG-RAN may include gNBs and / or eNBs that provide user plane and control plane protocol terminations to the UE. Figure 4 This example illustrates a scenario where only gNBs are included. The gNBs (eNBs) are connected via the Xn interface. The gNBs and eNBs are connected to the 5G Core Network (5GC) via the NG interface. More specifically, the gNBs and eNBs 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 Illustrate the functional division between NG-RAN and 5GC.

[0072] Reference Figure 5 The gNB can provide functions such as inter-cell radio resource management (InterCell RRM), radio bearer management (RB control), connection mobility control, radio admission control, measurement configuration and provisioning, and dynamic resource allocation. The AMF can provide functions such as NAS security and idle state mobility handling. The UPF can provide functions such as mobility anchoring and PDU processing. The SMF can provide functions such as UE IP address allocation and PDU session control.

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

[0074] Reference Figure 6 In NR, a radio frame (hereinafter also referred to as a frame) can be used for UL transmission and downlink transmission. The length of the frame is 10ms and can be defined as two 5ms half frames (HF). The HF can be defined as five 1ms subframes (SF). The SF can be divided into one or more time slots, and the number of time slots within the SF depends on the subcarrier spacing (SCS). Each time slot includes 12 or 14 OFDM (A) symbols depending on the cyclic prefix (CP). When a normal CP is used, each time slot includes 14 symbols. When an extended CP is used, each time slot includes 12 symbols. Here, the symbols may include OFDM symbols (or CP-OFDM symbols) and single carrier-FDMA (SC-FDMA) symbols (or discrete Fourier transform spread-OFDM (DFT-s-OFDM) symbols).

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

[0076] [Table 1]

[0077]

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

[0079] [Table 2]

[0080]

[0081] exist Figure 6 In FIG, the cases where μ=0, 1, 2, and 3 are exemplified.

[0082] The following Table 2-1 illustrates that the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary depending on the SCS in the case of using extended CP.

[0083] [Table 2-1]

[0084] <![CDATA[SCS(15*2 μ )]]> <![CDATA[N slot symb ]]> <![CDATA[N frame，μ slot ]]> <![CDATA[N subframe，μ slot ]]> 60KHz (μ=2) 12 40 4

[0085] In the NR system, OFDM(A) parameter sets (e.g., SCS, CP length, etc.) may be configured differently between multiple cells combined into one UE. Therefore, the (absolute time) duration of time resources (e.g., SF, time slot, or TTI) (collectively referred to as time unit (TU) for simplicity) consisting of the same number of symbols may be configured differently between the combined cells.

[0086] Figure 7 The time slot structure is illustrated.

[0087] A slot may include multiple symbols in the time domain. For example, in the case of normal CP, one slot may include 14 symbols (or 7 symbols), but in the case of extended CP, one slot may include 12 symbols (or 6 symbols). A carrier may include multiple subcarriers in the frequency domain. A resource block (RB) may be defined as a plurality of consecutive subcarriers (e.g., 12 subcarriers) in the frequency domain. A bandwidth part (BWP) may be defined as a plurality of consecutive (physical) resource blocks (P)RBs in the frequency domain, and a BWP may correspond to a parameter set (e.g., SCS, CP length, etc.). A carrier may include up to N (e.g., 5) BWPs. Data communication may be performed via an active BWP, and only one BWP may be activated for a UE. In a resource grid, each element may be referred to as a resource element (RE), and a complex symbol may be mapped to an RE.

[0088] The physical downlink control channel (PDCCH) may include one or more control channel elements (CCEs), as illustrated in Table 3 below.

[0089] [Table 3]

[0090] Aggregation level Number of CCEs 1 1 2 2 4 4 8 8 16 16

[0091] That is, the PDCCH can be transmitted through resources including 1, 2, 4, 8, or 16 CCEs. Here, a CCE includes six resource element groups (REGs), and one REG includes one resource block in the frequency domain and one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

[0092] Monitoring implies decoding each PDCCH candidate according to the Downlink Control Information (DCI) format.The UE monitors a set of PDCCH candidates in one or more CORESETs (described below) on the active DLBWP of each activated serving cell configured with PDCCH monitoring according to the corresponding search space set.

[0093] In NR, a new unit called Control Resource Set (CORESET) may be introduced. UE may receive PDCCH in CORESET.

[0094] Figure 8 CORESET is instantiated.

[0095] Reference Figure 8 , CORESET includes N in the frequency domain CORESET RB resource blocks and N in the time domain CORESET symb ∈{1, 2, 3} symbols. N may be provided by the base station via higher layer signaling CORESET RB and N CORESET symb .like Figure 8 As illustrated in , a CORESET may include multiple CCEs (or REGs).

[0096] The UE may attempt to detect the PDCCH in units of 1, 2, 4, 8, or 16 CCEs in a CORESET. One or more CCEs on which PDCCH detection may be attempted may be referred to as PDCCH candidates.

[0097] Multiple CORESETs can be configured for a UE.

[0098] The control region in related wireless communication systems (e.g., LTE / LTE-A) is configured over the entire system bandwidth used by a base station (BS). All UEs, except for some UEs that only support narrowband (e.g., eMTC / NB-IoT UEs), must be able to receive wireless signals over the entire system bandwidth of the BS in order to properly receive and decode control information transmitted by the BS.

[0099] On the other hand, NR introduces the aforementioned CORESET. A CORESET is a radio resource used for control information to be received by a UE and can use only a portion of the system bandwidth rather than the entire system bandwidth. The base station can allocate a CORESET to each UE and transmit control information via the allocated CORESET. In NR, a UE can receive control information from the base station without having to receive the entire system bandwidth.

[0100] The CORESET may include a UE-specific CORESET for transmitting UE-specific control information and a common CORESET for transmitting control information common to all UEs.

[0101] On the other hand, NR may require high reliability depending on the application field. In this case, the target block error rate (BLER) of downlink control information (DCI) transmitted through a downlink control channel (e.g., a physical downlink control channel (PDCCH)) can be significantly reduced compared to the prior art. As an example of a method for meeting the requirement for high reliability, the amount of content included in the DCI can be reduced and / or the amount of resources used when transmitting the DCI can be increased. In this case, the resources may include at least one of resources in the time domain, resources in the frequency domain, resources in the code domain, and resources in the space domain.

[0102] In NR, the following technologies / features can be applied.

[0103] <Self-contained subframe structure.

[0104] Figure 9 An example of a frame structure for a new radio access technology is illustrated.

[0105] In NR, such as Figure 9 As shown in , a structure in which a control channel and a data channel are time-division multiplexed within one TTI may be regarded as a frame structure in order to minimize latency.

[0106] exist Figure 9 In the figure, the shaded area represents the downlink control region, and the black area represents the uplink control region. The unmarked area can be used to transmit downlink data (DL data) or uplink data (UL data). A characteristic of this structure is that downlink (DL) and uplink (UL) transmissions are performed sequentially within a subframe. DL data can be sent within the subframe, and UL ACK / NACK (acknowledgement / non-acknowledgement) can also be received. Therefore, when a data transmission error occurs, the time required to resend the data is reduced, thereby minimizing the waiting time for the final data transmission.

[0107] In the data and control TDM subframe structure, a time gap may be required for the base station and UE to switch from transmit mode to receive mode or vice versa. To this end, some OFDM symbols when switching from DL to UL can be set as a guard period (GP) in a self-contained subframe structure.

[0108] Figure 10 The structure of a self-contained time slot is illustrated.

[0109] In the NR system, a time slot contains DL control channels, DL or UL data, UL control channels, etc. For example, the first N symbols in the time slot (hereinafter, DL control region) can be used to send DL control channels, and the last M symbols in the time slot (hereinafter, UL control region) can be used to send UL control channels. N and M are both integers greater than or equal to 0. The resource region (hereinafter, data region) located between the DL control region and the UL control region can be used for DL ​​data transmission or UL data transmission. For example, the following configuration can be considered. List the various time periods in chronological order.

[0110] 1.DL configuration only,

[0111] 2. UL configuration only,

[0112] 3. Hybrid 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 region: (i) UL data region, (ii) UL data region + UL control region.

[0117] The PDCCH can be transmitted in the DL control region, and the physical downlink shared channel (PDSCH) can be transmitted in the DL data region. The physical uplink control channel (PUCCH) can be transmitted in the UL control region, and the physical uplink shared channel (PUSCH) can be transmitted in the UL data region. Downlink control information (DCI), such as DL data scheduling information or UL data scheduling information, can be transmitted on the PDCCH. Uplink control information (UCI), such as ACK / NACK information for DL ​​data, channel state information (CSI), or scheduling requests (SRs), can be transmitted on the PUCCH. GPs provide time gaps when the gNB and UE switch from TX mode to RX mode, or when the gNB and UE switch from RX mode to TX mode. Some symbols within a subframe during the DL to UL switchover can be configured as GPs.

[0118] <Analog Beamforming #1>

[0119] The shortening of wavelengths to millimeter waves (mmW) allows for the installation of numerous antenna elements within the same area. Specifically, since the wavelength at 30 GHz is 1 cm, a total of 100 antenna elements can be mounted in a 5 × 5 cm panel in a two-dimensional array at intervals of 0.5λ (wavelength). Consequently, mmW systems can utilize a large number of antenna elements to increase beamforming (BF) gain, thereby extending coverage or improving throughput.

[0120] In this case, if a transceiver unit (TXRU) is provided to adjust the transmit power and phase of each antenna element, independent beamforming for each frequency resource can be performed. However, installing a TXRU for all approximately 100 antenna elements is inefficient in terms of cost. Therefore, a method of mapping a large number of antenna elements to one TXRU using an analog phase shifter and controlling the beam direction is considered. This analog beamforming can form only one beam direction in all frequency bands and therefore cannot provide frequency selective beamforming.

[0121] Hybrid beamforming (BF) with fewer than B TXRUs than Q antenna elements can be considered an intermediate form between digital BF and analog BF. In this case, the number of directions of beams that can be transmitted simultaneously is limited to B, although this number depends on the method of connecting the B TXRUs and the Q antenna elements.

[0122] <Analog Beamforming #2>

[0123] When multiple antennas are used in NR, hybrid beamforming, which is a combination of digital beamforming and analog beamforming, occurs. Here, in analog beamforming (or RF beamforming), the RF end performs precoding (or combining), so it is possible to achieve performance similar to digital beamforming while reducing the number of RF chains and the number of D / A (or A / D) converters. For the convenience of description, the hybrid beamforming structure can be represented by N TXRUs and M physical antennas. Then, the digital beamforming of the L data layers to be sent at the transmitting end can be represented by an N×L matrix, and the converted N digital signals are converted into analog signals via the TXRU, and analog beamforming represented by the M×N matrix is ​​applied.

[0124] System information of the NR system can be transmitted in a broadcast manner. In this case, in one symbol, analog beams belonging to different antenna panels can be transmitted simultaneously. A scheme of introducing a beam RS (BRS), which is a reference signal (RS) transmitted by applying a single analog beam (corresponding to a specific antenna panel), is under discussion to measure the channel of each analog beam. BRS can be defined for multiple antenna ports, and each antenna port of the BRS can correspond to a single analog beam. In this case, unlike BRS, a synchronization signal or xPBCH can be transmitted by applying all analog beams within the analog beam group so as to be correctly received by any UE.

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

[0126] In NR, since multiple synchronization signal blocks (SSBs) can be transmitted at different times and SSBs can be used to perform initial access (IA), serving cell measurements, etc., it is preferred to transmit the SSB first when the transmission time and resources of the SSB overlap with the transmission time and resources of other signals. To this end, the network can broadcast the transmission time and resource information of the SSB or indicate them through uE-specific RRC signaling.

[0127] In NR, beams can be used for both transmission and reception. If the reception performance of the current serving beam degrades, a process called beam failure recovery (BFR) can be performed to search for a new beam.

[0128] Since BFR processing is not intended to declare an error or failure in the link between the network and the UE, it can be assumed that the connection to the current serving cell is maintained even if BFR processing is performed. During BFR processing, measurements of different beams configured by the network (which can be represented by CSI-RS ports or synchronization signal block (SSB) indices) can be performed, and the best beam for the corresponding UE can be selected. The UE can perform BFR processing in such a way that it performs RACH processing associated with the beam that produces good measurement results.

[0129] Now, the transmission configuration indicator (hereinafter, TCI) state will be described. The TCI state may be configured for each CORESET of the control channel, and a parameter for determining the RX beam of the UE may be determined based on the TCI state.

[0130] For each DL BWP of the serving cell, the UE may be configured for three or fewer CORESETs. Additionally, the UE may receive the following information for each CORESET.

[0131] 1) CORESET index p (e.g., one of 0 to 11, where the index of each CORESET can be uniquely determined in the BWP of one serving cell),

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

[0133] 3) the duration of the CORESET in the time domain (which can be given in symbols),

[0134] 4) Resource block collection,

[0135] 5) CCE to REG mapping parameters,

[0136] 6) Antenna port quasi co-location, which indicates the quasi co-location (QCL) information of the DM-RS antenna ports used to receive PDCCH in each CORESET (from a set of antenna port quasi co-locations provided by a higher layer parameter called "TCI-State"),

[0137] 7) Indication of the presence of a Transmission Configuration Indication (TCI) field for a specific DCI format transmitted by PDCCH in a CORESET, etc.

[0138] QCL will be described. If the characteristics of the channel through which symbols on one antenna port are transmitted can be inferred from the characteristics of the channel through which symbols on the other antenna port are transmitted, the two antenna ports are said to be quasi-co-located (QCL). For example, when two signals A and B are transmitted from the same transmit antenna array to which the same / similar spatial filters are applied, the two signals can experience the same / similar channel conditions. From the perspective of the receiver, when one of the two signals is received, the other signal can be detected by using the channel characteristics of the received signal.

[0139] In this sense, when signal A and signal B are said to be quasi co-located (QCL), this may mean that signal A and signal B experience similar channel conditions, and therefore, the channel information estimated to detect signal A is also useful for detecting signal B. Herein, channel conditions may be defined according to, 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 the corresponding QCL type (QCL types A, B, C, and D, see Table 4).

[0141] [Table 4]

[0142] QCL Type describe QCL-Type A Doppler shift, Doppler spread, average delay, delay spread QCL-Type B Doppler shift, Doppler spread QCL-Type C Doppler shift, average delay QCL-Type D Spatial Rx parameters

[0143] Each "TCI-State" may include parameters for configuring the QCL relationship between one or two downlink reference signals and the DM-RS ports of the PDSCH (or PDDCH) or the CSI-RS ports of the CSI-RS resources.

[0144] In addition, for each DL BWP configured for the UE in one serving cell, the UE may be provided with 10 (or fewer) search space sets.For each search space set, the UE may be provided with at least one of the following information.

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

[0146] In NR, CORESET #0 can be configured via PBCH (or UE-specific signaling for handover or PSCell configuration or BWP configuration). Search space (SS) set #0 configured via PBCH can monitor offsets (e.g., slot offset, symbol offset) that are different for each associated SSB. This may be necessary to minimize the search space opportunities monitored by the UE. Alternatively, this may be necessary to provide a beam scanning control / data region capable of performing control / data transmission on a per-beam basis in order to persistently perform communication with the UE in a situation where the UE's optimal beam changes dynamically.

[0147] Figure 11 Physical channels and typical signal transmission are illustrated.

[0148] Reference Figure 11 In a wireless communication system, a UE receives information from a base station (BS) via a downlink (DL) and transmits information to the BS via an uplink (UL). The information transmitted and received by the BS and the UE includes data and various control information, and various physical channels exist depending on the type and purpose of the information transmitted and received by the BS and the UE.

[0149] A UE that has been powered on again after being powered off or has newly entered a cell performs an initial cell search operation (S11), such as adjusting synchronization with the base station (BS). To this end, the UE receives a primary synchronization channel (PSCH) and a secondary synchronization channel (SSCH) from the BS to adjust synchronization with the BS and obtain information such as the cell identity (ID). Furthermore, the UE may receive a physical broadcast channel (PBCH) from the BS to obtain broadcast information in the cell. Furthermore, during the initial cell search, the UE may receive a downlink reference signal (DL RS) to identify the downlink channel status.

[0150] (Initial) cell search is the process by which a UE acquires time and frequency synchronization with a cell and detects the cell ID of the cell. The cell search may be based on the primary and secondary synchronization signals of the cell, and the PBCH DMRS.

[0151] After completing the initial cell search, the UE may receive a physical downlink control channel (PDCCH) and a corresponding physical downlink shared channel (PDSCH) to obtain more specific system information ( S12 ).

[0152] Afterwards, the UE may perform a random access procedure to complete access to the BS (S13 to S16). Specifically, the UE may transmit a preamble through a physical random access channel (PRACH) (S13) and may receive a random access response (RAR) to the preamble through a PDCCH and its corresponding PDSCH (S14). Afterwards, the UE may transmit a physical uplink shared channel (PUSCH) using the scheduling information in the RAR (S15) and may perform a contention resolution procedure (which may be referred to as a process of receiving a contention resolution message) similar to the PDCCH and its corresponding PDSCH (S16).

[0153] After performing the above-mentioned process, the UE can perform PDCCH / PDSCH reception (S17) and PUSCH / physical uplink control channel (PUCCH) transmission (S18) as a typical uplink / downlink signal transmission process. The control information sent by the UE to the BS is called uplink control information (UCI). UCI includes hybrid automatic repeat and request (HARQ) confirmation (ACK) / negative ACK (NACK), scheduling request (SR), channel state information (CSI), etc. CSI includes channel quality indicator (CQI), precoding matrix indicator (PMI), rank indication (RI), etc. Typically, UCI is transmitted through PUCCH. However, when control information and data are to be transmitted at the same time, UCI can be transmitted through PUSCH. In addition, the UE can send UCI aperiodically through PUSCH according to the request / instruction of the network.

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

[0155] With BA, the UE's RX and TX bandwidths are not necessarily as wide as the cell's bandwidth and can be adjusted. That is, the width can be commanded to change (e.g., reduced for low-activity periods to save power), the position in the frequency domain can be moved (e.g., to increase scheduling flexibility), and the subcarrier spacing can be changed (e.g., to allow for different services). A subset of the cell's entire cell bandwidth is called a bandwidth part (BWP), and BA is achieved by configuring a BWP for the UE and notifying the UE of the currently active BWP among the configured BWPs. When BA is configured, the UE only needs to monitor the PDCCH on one active BWP. That is, it does not need to monitor the PDCCH across the entire downlink frequency of the cell. A BWP inactivity timer (independent of the DRX inactivity timer mentioned above) is used to switch the active BWP to the default BWP. That is, when PDCCH decoding is successful, the timer is restarted, and when the timer expires, the default BWP is switched.

[0156] The following describes the integrated access and backhaul link (IAB). For ease of explanation, the proposed method is described below based on the New RAT (NR) system. However, the scope of application of the proposed method can be extended to systems other than NR systems, such as 3GPP LTE / LTE-A systems.

[0157] Among the potential technologies aimed at enabling future cellular network configuration scenarios and applications is the technology that supports wireless backhaul and relay links, which enables flexible and high-density deployment of NR cells without proportionally densifying the transport network.

[0158] Compared to LTE, in NR, larger bandwidths are expected to be available along with native deployment of massive MIMO or multi-beam systems (e.g., in mmWave spectrum), creating opportunities for the development and deployment of integrated access and backhaul links. This facilitates the establishment of dense networks of self-backhauled NR cells, defined as multiple control and data channels / procedures that provide access to or to a UE, in a more integrated manner. Such systems are referred to as integrated access and backhaul links (IAB).

[0159] The following definitions are made in this disclosure.

[0160] -AC(x): access link between node (x) and UE.

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

[0162] In this case, the node may refer to a donor gNB (DgNB) or a relay node (RN). Here, the DgNB or donor node may be a gNB that provides a function of supporting backhaul for the IAB node.

[0163] When there are relay node 1 and relay node 2, and relay node 1 is connected to relay node 2 through a backhaul link and relays data sent and received by relay node 2, relay node 1 is called the parent node of relay node 2, and relay node 2 is called the child node of relay node 1.

[0164] The technical features described separately in one drawing in this specification may be implemented separately or simultaneously.

[0165] The following figures are used to illustrate a specific example of this specification. The names of specific devices or specific signals / messages / fields recorded in the figures are only examples, and therefore the technical features of this specification are not limited by the specific names used in the following figures.

[0166] Now, the full-duplex operation will be described.

[0167] With 5G, new service types such as extended reality (XR), AI-based services, and autonomous vehicles are emerging. These services have the characteristics of dynamically changing traffic in both downlink (DL) and uplink (UL) directions and require low latency for the traffic (e.g., packets) to be sent. With 5G services, traffic will explode to support these various new use cases.

[0168] Existing semi-static or dynamic TDD UL / DL configurations have limitations such as transmission time delay and interference between operators. Existing FDD methods have limitations in terms of efficient frequency resource utilization in the DL / UL directions. Therefore, to achieve low latency and efficient resource utilization in NR, the introduction of full-duplex operation within a single carrier is under discussion.

[0169] Figure 12 An example of how full duplex is applied within a carrier is shown.

[0170] Reference Figure 12 , full-duplex methods include Figure 12 The sub-band level full duplex shown in (a) of FIG. 1 (hereinafter, which may be referred to as sub-band full duplex or SBFD), and it is also possible to consider Figure 12 Spectrum Sharing Full Duplex (hereinafter, which may be referred to as SSFD) shown in (b).

[0171] In the case of SBFD, DL and UL are transmitted and received using different frequency resources within the same carrier (eg, carrier #0). That is, for the same time resource, different frequency resources are used in DL and UL.

[0172] In the case of SSFD, DL and UL are transmitted and received using the same or overlapping frequency resources within the same carrier (eg, carrier #0). That is, for the same time resource, the same or overlapping frequency resources can be used in DL and UL.

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

[0174] Figure 13 An example is shown in which a time resource operating in half-duplex (HD) and a time resource operating in full-duplex (FD) (eg, SBFD or SSFD) coexist.

[0175] exist Figure 13 In (a), some time resources operating as SBFD (=SBFD) are indicated as SBFD, and some time resources operating as HD are indicated as HD. Figure 13 In (b), some time resources operating as SSFD are indicated as SSFD, and some time resources operating as HD are indicated as HD. The unit of the time resource may be, for example, a time slot or a symbol.

[0176] In the time resources used for SBFD operation, some frequency resources are used as DL resources, while other frequency resources 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. The guard subband may also be referred to by other terms, such as guard frequency resources or guard subcarriers.

[0177] In time resources using SSFD, the entire frequency resource can be used for both DL and UL. Alternatively, to reduce the impact of interference from other adjacent carriers (this may be referred to as ACI (adjacent carrier interference)), some frequency resources located at one or both ends of the carrier may not be used for DL ​​and / or UL. In other words, one or both ends of the carrier may be used as an unused guard band (guard subband) for both DL and UL. Alternatively, to reduce ACI on UL reception, one or both ends of the carrier may be used only for DL ​​transmission.

[0178] In this disclosure, time slot resources operating as HD are referred to as HD time slots, time slot resources operating as SBFD are referred to as SBFD time slots, and time slot resources operating as SSFD are referred to as SSFD time slots, respectively. SBFD time slots and SSFD time slots are also collectively referred to as FD time slots.

[0179] In the present disclosure, among all frequency resources in time resources operating as FD, for convenience, frequency resources operating in DL may be referred to as DL subbands, and frequency resources operating in UL may also be referred to as UL subbands.

[0180] In the case of full-duplex operation, both the base station and the UE can perform full-duplex operation. That is, both the base station and the UE can simultaneously perform DL and UL transmission and reception in the same time resource using the same or different frequency resources.

[0181] Alternatively, only the base station can perform full-duplex operation, while the UE can perform half-duplex operation. The base station can perform simultaneous DL and UL transmission and reception in the same time resource using the same or different frequency resources, while the UE only performs 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 UEs simultaneously.

[0182] The present disclosure is described assuming that the base station performs / supports full-duplex operation but the UE performs / supports half-duplex operation. However, the present disclosure can also be applied even if both the base station and the UE perform / support full-duplex operation.

[0183] Based on this discussion, the present disclosure describes a method for determining time / frequency resources for a UE to perform DL / UL operations in SBFD symbols during intra-carrier full-duplex operation.

[0184] In the following, the term "network" can be interpreted as gNB or CU / DU. In addition, the term "UE" can be interpreted as MT (Mobile Terminal) of an IAB node or NCR-MT (Network Controlled Relay 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 an FD scheme (e.g., SBFD or SSFD). For example, the base station can perform HD operation in a first time resource and perform FD operation in a second time resource (which may be a time resource other than the first time resource).

[0187] The first time resource for performing HD operations performs DL operations or UL operations across frequency resources that include the entire system bandwidth. During the first time resource for performing HD operations, the network performs DL operations using the 1-1 time resource and UL operations using the 1-2 time resource. In this case, the 1-1 time resource and the 1-2 time resource do not overlap.

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

[0189] Figure 14 Examples of first time resources, second time resources, first frequency resources, and second frequency resources are shown.

[0190] Reference Figure 14 (a) In the first time resource (indicated by A), HD is used. In the second time resource (indicated by B), for example, SBFD can be used. In the first time resource, the resource indicated by DL corresponds to the 1-1 time resource described above, and the resource indicated by UL corresponds to the 1-2 time resource described above.

[0191] Reference Figure 14 (b), in the second time resource, the frequency resource used as the DL operation corresponds to the above-mentioned first frequency resource, and the frequency resource used as the UL operation corresponds to the above-mentioned second frequency resource.

[0192] Figure 15 Another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource is shown.

[0193] Reference Figure 15 In (a), in a first time resource (labeled A), the device operates as half-duplex. In a second time resource (labeled B), the device may operate, for example, as SSFD. In the first time resource, resources labeled DL correspond to the first time resource, and resources labeled UL correspond to the second time resource.

[0194] Reference Figure 15 (b), in the second time resource, the frequency resource for DL ​​and DL+UL operations corresponds to the above-mentioned first frequency resource, and the frequency resource for DL+UL operations corresponds to the above-mentioned second frequency resource.

[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 operations, the first frequency resource and the second frequency resource do not overlap. This ensures that DL and UL operations are performed using different frequency resources. In this case, there may be frequency resources that do not correspond to both the first and second frequency resources. These frequency resources are referred to as guard subbands or guard frequency resources. These guard frequency resources may be required to reduce interference from DL transmissions on UL reception. The guard frequency resources may be located between the first and second frequency resources.

[0197] 2) When performing SSFD operations, the first frequency resource and the second frequency resource may overlap. In this case, there may be frequency resources that do not correspond to both the first frequency resource and the second frequency resource. These frequency resources are referred to as guard subbands or guard frequency resources. These guard frequency resources may be required to reduce interference from DL transmissions on adjacent carriers to UL reception, and / or reduce interference from DL transmissions to UL reception on adjacent carriers.

[0198] 3) When performing SBFD operation, the second frequency resource may be composed of continuous frequency resources, and the first frequency resource may be composed of non-continuous frequency resources. At this time, the first frequency resource may be composed of multiple (for example, two) non-continuous sets, and each set may be composed of continuous frequency resources. This is to reduce the interference of DL transmission on adjacent carriers to UL resources by placing the second frequency resource used for UL at the center of the frequency resources constituting the cell. Conversely, the first frequency resource may be composed of continuous frequency resources, and the second frequency resource may be composed of non-continuous frequency resources. At this time, the second frequency resource may be composed of multiple (for example, two) non-continuous sets, and each set may be composed of continuous frequency resources. This is to reduce the interference of DL transmission on UL resources on adjacent carriers by placing 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 consist of some frequency resources in the first frequency resource. In this case, the second frequency resource may be configured to have x fewer physical resource blocks (PRBs) than the first frequency resource on one or both sides of the carrier. This is to reduce interference from DL transmissions on adjacent carriers to UL reception.

[0200] The network determines the “first time resource” and the “second time resource” and the “first frequency resource” and the “second frequency resource” as described above, and provides some or part of the corresponding information to the UE.

[0201] For FD (SBFD and / or SSFD) operation of a cell, the UE may determine information about time resources (hereinafter referred to as SBFD symbols) operating as SBFD (and / or SSFD). To this end, information about SBFD symbols may be set from the network to the UE.

[0202] When a specific time resource is set as a time resource operating in SBFD (SBFD symbol), both DL resources and UL resources may 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 perform only DL transmission. In SBFD resources, DL transmission is performed only within the DL subband. Therefore, even if there is no UL signal transmitted in the UL subband, only DL transmission can be performed within the DL subband.

[0203] In this case, if the base station has no UL transmission to receive, even if a specific time resource is a resource determined as an SBFD symbol, it may consider performing DL transmission outside the DL subband as well as within the DL subband to improve DL throughput. In other words, it may consider performing DL transmission in the entire frequency band.

[0204] That is, in resources determined as SBFD symbols, it may be considered to fall back to TDD operation, in which DL or UL operation is performed on the entire frequency band, rather than performing SBFD operation on DL / UL subbands.

[0205] The UE can perform the same TDD operation (half-duplex operation) as the existing UE in resources not determined as SBFD symbols. That is, it can perform only DL operation or UL operation by using all frequency resources of the cell.

[0206] In the present disclosure, a time resource that operates as SBFD or SBFD symbols may be referred to as a "second time resource." Additionally, in the present disclosure, a time resource that operates as TDD, a time resource that operates as HD, a TDD symbol, or an HD symbol may be referred to as a "first time resource."

[0207] The DL subband mentioned in the present disclosure may mean a “first frequency resource.” In addition, the UL subband mentioned in the present disclosure may mean a “second frequency resource.”

[0208] The present disclosure assumes SBFD operation, where a cell performs DL and UL simultaneously using different frequency resources (eg, subbands) in the same time resource. However, the present disclosure may also be applied when the cell performs SS-FD operation.

[0209] The present disclosure may include the following UE operations.

[0210] When a UE performs DL reception in an SBFD symbol, i) the UE may perform DL reception using frequency resources within the DL subband. The UE may perform DL reception using frequency resources within the DL subband within the DL BWP. ii) the UE does not perform DL reception using frequency resources outside the DL subband. The UE does not perform DL reception using frequency resources within the DL BWP except for the DL subband.

[0211] When a UE performs UL transmission in an SBFD symbol, i) the UE may use frequency resources within the UL subband for UL transmission. The UE may use frequency resources within the UL subband within the UL BWP for UL transmission. ii) the UE does not perform UL transmission on frequency resources outside the UL subband. The UE does not use frequency resources within the UL BWP for UL transmission except for the UL subband.

[0212] Generally speaking, a UE may perform DL reception in a DL subband and UL transmission in a UL subband during time resources in which the UE determines that a cell is operating in SBFD. However, if the gNB (base station) performs only DL transmission or UL reception during time resources in which the UE determines that a cell is operating in SBFD, or if necessary, it may consider performing DL transmission or UL reception over the entire bandwidth (capable of scheduling DL or UL).

[0213] Hereinafter, it is assumed that a cell performs SBFD operations for both DL and UL simultaneously using different frequency resources (eg, subbands) in the same time resource. However, the present disclosure may also be applied when the cell performs SS-FD operations.

[0214] The tdd-UL-DL-ConfigurationCommon flag may be used to provide the UE with slot configuration information for multiple slot resources. The slot configuration information may indicate whether each symbol in a slot is a DL symbol or a UL symbol. The slot configuration information may be used to configure a specific symbol as either DL or UL, or may not be configured as either DL or UL (in which case the symbol may be interpreted as a flexible (F) symbol).

[0215] The following table shows an example of tdd-UL-DL-ConfigurationCommon. tdd-UL-DL-ConfigurationCommon (TDD-UL-DL-ConfigCommon) is an information element (IE) that determines a cell-specific uplink / downlink TDD configuration.

[0216] [Table 5]

[0217]

[0218] "d1-UL-TransmissionPeriodicity" indicates the period of the DL-UL pattern.

[0219] "nrofDownlinkSlots" indicates the number of consecutive full DL slots at the beginning of each DL-UL pattern. A full DL slot may be a slot in which all symbols in the slot are downlink symbols.

[0220] "nrofDownlinkSymbols" indicates the number of consecutive downlink symbols at the beginning of the slot following the last full DL slot derived from "nrofDownlinkSlots." If the value of this field is 0, it indicates that there are no partial DL slots. A partial DL slot may be a slot in which only some symbols are downlink symbols.

[0221] "nrofUplinkSlots" indicates the number of consecutive full UL slots at the end of each DL-UL pattern. A full UL slot may be a slot in which all symbols in the slot are uplink symbols.

[0222] "nrofUplinkSymbols" indicates the number of consecutive UL symbols at the end of the slot before the first full UL slot derived from "nrofUplinkSlots". If the value of this field is 0, it indicates that there are no partial UL slots. A partial UL slot may mean a slot in which only some of the symbols in the slot are uplink symbols.

[0223] The above information may be an example of time slot configuration information. Thus, the UE may determine whether each symbol in a time slot is a DL symbol, a UL symbol, or an F symbol.

[0224] In this disclosure, symbols configured as DL via tdd-UL-DL-ConfigurationCommon are referred to as cell-specific DL symbols. Symbols configured as UL via tdd-UL-DL-ConfigurationCommon are referred to as cell-specific UL symbols. Symbols not configured as DL or UL via tdd-UL-DL-ConfigurationCommon are referred to as cell-specific F symbols.

[0225] The UE can be configured as DL or UL through tdd-UL-DL-ConfigurationDedicated (TDD-UL-DL-ConfigDedicated) for the cell-specific F symbol. tdd-UL-DL-ConfigurationDedicated is an information element that determines the UE-specific uplink / downlink TDD configuration.

[0226] When the cell-specific F symbol is configured as DL through tdd-UL-DL-ConfigurationDedicated, the UE determines the symbol as a DL symbol. The UE determines that the DL symbol can be used for DL ​​reception and is not used for UL transmission.

[0227] When a cell-specific F symbol is configured as UL through tdd-UL-DL-ConfigurationDedicated, the UE regards the symbol as a UL symbol. The UE considers that the UL symbol is not used for DL ​​reception but can be used for UL transmission.

[0228] If the cell-specific F symbol is not configured as DL or UL through tdd-UL-DL-ConfigurationDedicated, the UE determines the symbol as a flexible (F) symbol. The UE determines that the F symbol can be used for DL ​​reception or UL transmission in the future through signaling / scheduling, etc.

[0229] The following table is an example of tdd-UL-DL-ConfigurationDedicated.

[0230] [Table 6]

[0231]

[0232] "nrofDownlinkSymbols" indicates the number of consecutive DL symbols at the beginning of the slot identified by "slotIndex." If this field is not present, the UE may assume that there are no leading DL symbols.

[0233] "nrofUplinkSymbols" indicates the number of consecutive UL symbols at the end of the slot identified by "slotIndex". If this field is not present, the UE may assume that there are no trailing UL symbols.

[0234] "slotIndex" is a field that identifies a time slot within the time slot configuration period given in tdd-UL-DL-configurationCommon.

[0235] "symbols" indicates the direction (downlink or uplink) of the symbols in the time slot. "allDownlink" indicates that all symbols in the time slot are used for downlink, and "allUplink" indicates that all symbols in the time slot are used for uplink. "explicit" explicitly indicates the number of symbols allocated to downlink and uplink at the beginning and end of the time slot, respectively.

[0236] The UE may determine the direction (DL, UL, F) of a symbol within a slot based on the aforementioned TDD configuration message (eg, at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated).

[0237] At the same time, the UE may receive an FD configuration message from the network indicating full-duplex time resources. For example, the UE may receive SBFD symbol information indicating SBFD symbols from the network. This allows the UE to determine whether a particular symbol is an SBFD symbol or a non-SBFD symbol. The FD configuration message may be included in the aforementioned TDD configuration message or provided as a separate message.

[0238] If the UE determines that a specific symbol is a non-SBFD symbol, the UE determines to perform a legacy operation on the symbol.

[0239] When determining that a specific symbol is a SBFD symbol, the UE determines that the symbol is a symbol capable of performing an SBFD operation from a cell perspective.

[0240] If the UE does not receive configuration information for SBFD symbols from the network, then 1) it can determine that all symbols are non-SBFD symbols. Therefore, the UE can operate like traditional TDD in all symbols.

[0241] Alternatively, if the UE does not receive configuration information for SBFD symbols from the network, then 2) the UE may determine all symbols as SBFD symbols.

[0242] When a UE determines that a specific symbol is an SBFD symbol, the UE may perform DL reception within the DL subband and UL transmission within the UL subband in the time resource in which the UE determines that the cell is operating in SBFD. Furthermore, in the time resource in which the cell is determined to be operating in SBFD, the gNB (representing base station or network, the same below) may perform only DL transmission or UL reception, or may consider performing DL transmission or UL reception across the entire bandwidth as needed (capable of receiving DL or UL scheduling).

[0243] That is, all or part of the cell-specific DL symbols and / or cell-specific F symbols can be configured as SBFD symbols. In this case, the UE can perform DL reception or UL transmission operations (i.e., half-duplex (HD) operation) across the entire bandwidth in the resources configured as SBFD symbols.

[0244] To this end, when a cell-specific DL symbol is configured / determined as a SBFD symbol, the UE may determine whether to perform a DL / UL operation on the corresponding symbol as follows.

[0245] 1) If a cell-specific DL symbol (a symbol configured as DL through tdd-UL-DL-ConfigurationCommon) is configured / determined as a SBFD symbol, the UE may operate in DL or UL in this symbol.

[0246] 2) For cell-specific DL symbols, i) if it is indicated as DL by tdd-UL-DL-ConfigurationDedicated, the UE determines the symbol as a DL symbol. The UE determines that the symbol is used for DL ​​reception and not for UL transmission. ii) if it is indicated as UL by tdd-UL-DL-ConfigurationDedicated, the UE determines the symbol as a UL symbol. The UE determines that the symbol is used for UL transmission and not for DL ​​reception. iii) if it is not indicated as DL or UL by tdd-UL-DL-ConfigurationDedicated, the UE determines that the symbol is a flexible (F) symbol. Alternatively, if tdd-UL-DL-ConfigurationDedicated is not set, the UE determines the symbol as an F symbol. The UE determines that the symbol can be used for DL ​​reception or UL transmission in the future through signaling / scheduling, etc.

[0247] The UE may determine the UL subband and the DL subband based on network configuration.

[0248] 1) The UE is configured with information about UL subbands and DL subbands from the network, and can thereby determine frequency resources constituting the UL subbands and DL subbands.

[0249] 2) Alternatively, the UE may be configured with only information about the UL subband from the network and may thereby determine the frequency resources constituting the UL subband. In this case, the remaining frequency resources within the frequency resources constituting the system bandwidth, excluding those configured / determined as the UL subband, may be determined as the DL subband. Furthermore, if the UE is configured with frequency resources constituting a guard subband, the remaining frequency resources within the frequency resources constituting the system bandwidth, excluding those configured / determined as the UL subband and the guard subband, may be determined as the DL subband.

[0250] 3) Alternatively, the UE may be configured with only information about DL subbands from the network and may determine the frequency resources constituting the DL subbands based on this information. In this case, the remaining frequency resources within the frequency resources constituting the system bandwidth, excluding those configured / determined as DL subbands, may be determined as UL subbands. Furthermore, if the UE is configured with frequency resources constituting guard subbands, the remaining frequency resources within the frequency resources constituting the system bandwidth, excluding those configured / determined as DL subbands and guard subbands, may be determined as UL subbands.

[0251] < Section 5.0. Possible UE operations in SBFD symbols.

[0252] In this section, operations that a UE may perform on symbols configured / determined as FD time resources (eg, SBFD symbols) are proposed / described.

[0253] In symbols configured / determined as SBFD symbols based on the configuration from the network (e.g., TDD configuration message and / or FD configuration message), the UE can operate in DL or UL. Alternatively, in symbols configured / determined as SBFD symbols, the UE can perform DL or UL operation in subband or wideband.

[0254] That is, even if a specific time resource is indicated by the network as an SBFD symbol, the UE can operate in subband DL and subband UL in the time resource, or perform only DL operation (DL only) and / or only UL operation (UL only) according to indication or agreement.

[0255] More specifically, the UE may perform one of the following operations in symbols configured / determined as SBFD symbols: {DL only, subband DL, UL only, subband UL}. Alternatively, the UE may perform one of the following operations in symbols configured / determined as SBFD symbols: {DL only, subband DL, subband UL}.

[0256] At this time, DL only, sub-band DL, UL only, and sub-band UL can respectively represent the following operations:

[0257] DL-only (this may be referred to as wideband DL operation): The UE performs DL reception, and the UE can perform DL reception in the entire frequency resources that constitute the system bandwidth. More specifically, the UE can perform DL reception in DLBWP resources within the entire frequency resources that constitute the system bandwidth. This corresponds to full-duplex (FD) operation, which is a different type of operation from half-duplex (HD), and may be more specifically referred to as HDDL operation.

[0258] Subband DL operation: The UE performs DL reception and can perform DL reception in frequency resources within a DL subband. More specifically, DL reception can be performed in frequency resources included in both the DL subband and the DL BWP. This corresponds to FD operation, which is a distinction between FD operation and HD operation, and can be more specifically referred to as FD DL operation.

[0259] UL Only (also referred to as Wideband UL Operation): The UE performs UL transmissions, and UL transmissions are performed across all frequency resources within the system bandwidth. More specifically, UL transmissions can be performed in UL BWP resources within the entire frequency resources that make up the system bandwidth. This corresponds to HD operation, which is the difference between FD operation and HD operation, and is more specifically referred to as HD UL operation.

[0260] Subband UL Operation: The UE performs UL transmission. The UE can perform UL transmission in frequency resources within a UL subband. More specifically, UL transmission can be performed in frequency resources included in both the UL subband and the UL BWP. This corresponds to FD operation, which is a distinction between FD operation and HD operation, and can be more specifically referred to as FD UL operation.

[0261] At this time, for symbols configured / determined as SBFD symbols, operations that the UE can perform may be determined differently according to TDD UL / DL configuration information (TDD configuration message).

[0262] For example, in symbols configured / determined as SBFD symbols, operations that the UE can perform may be determined differently according to tdd-UL-DL-ConfigurationCommon information.

[0263] For a symbol set / determined as an SBFD symbol, if the symbol is configured as DL by tdd-UL-DL-ConfigurationCommon (i.e., if it is a cell-specific DL symbol), then i) when the UE performs DL reception in the symbol, it can perform wideband DL operation or subband DL operation (this may also be expressed as performing HDDL operation or FD DL operation, the same below). This allows the entire bandwidth to be used for DL ​​in the specific symbol as needed, for example, to improve DL throughput, even if the specific symbol is configured as an SBFD symbol.

[0264] ii) When the UE performs UL transmission in the corresponding symbol, it can perform sub-band UL operation (this may also be expressed as performing FDUL operation, the same applies below). In the case of cell-specific DL symbols, it is not desirable to perform UL operation in the entire bandwidth because cells located in adjacent frequency bands also perform DL operation as symbols.

[0265] For a symbol set / determined as a SBFD symbol, if the symbol is not configured as DL or UL by tdd-UL-DL-ConfigurationCommon (ie, if it is a cell-specific F symbol), at least one of the following options may be applied.

[0266] Option 1.

[0267] When the UE performs DL reception in the corresponding symbol, it can perform wideband DL operation or subband DL operation. This allows the entire bandwidth to be used for DL ​​in a specific symbol when necessary, even if the specific symbol is configured as an SBFD symbol, for example to improve DL throughput.

[0268] When the UE performs UL transmission in the corresponding symbol, it can perform wideband UL operation or subband UL operation. This allows the entire bandwidth to be used for UL in a specific symbol when necessary, even if the specific symbol is configured as an SBFD symbol, for example to improve UL throughput.

[0269] Option 2.

[0270] When the UE performs DL reception in the corresponding symbol, it can perform wideband DL operation or subband DL operation. This is to allow the entire bandwidth to be used for DL ​​in a specific symbol as needed even if the specific symbol is configured as an SBFD symbol, for example, to improve DL throughput.

[0271] When a UE performs UL transmission in the corresponding symbol, it can only perform subband UL operation. That is, it cannot perform wideband UL operation. This is because, generally, when a cell supports SBFD operation, it has the effect of improving UL throughput and coverage, so there is no need to additionally improve UL throughput by allowing the entire bandwidth to be used for UL.

[0272] Option 3.

[0273] When the UE performs DL reception in the corresponding symbol, it can only perform subband DL operation, that is, it cannot perform wideband DL operation.

[0274] When the UE performs UL transmission in the corresponding symbol, it may perform a wideband UL operation or a subband UL operation (this may also be expressed as performing an HDUL operation or a FDUL operation, the same below).

[0275] According to an embodiment, for symbols configured / determined as SBFD symbols, operations that the UE may perform may be determined differently according to tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated information.

[0276] 1) For symbols configured / determined as SBFD symbols, if the symbol is configured / determined as a DL symbol using the tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated information, then i) when the UE performs DL reception in this symbol, it may perform either wideband DL operation or subband DL operation. ii) when the UE performs UL transmission in this symbol, it may perform only subband UL operation.

[0277] 2) For a symbol set / determined as an SBFD symbol, if the symbol is determined to be an F symbol through tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated information, at least one of the following options may be applied.

[0278] Option 1.

[0279] When the UE performs DL reception in the corresponding symbol, it may perform wideband DL operation or subband DL operation.

[0280] When the UE performs UL transmission in the corresponding symbol, it may perform a wideband UL operation or a subband UL operation (this may also be expressed as performing an HDUL operation or a FDUL operation, the same below).

[0281] Option 2.

[0282] When the UE performs DL reception in the corresponding symbol, it may perform wideband DL operation or subband DL operation.

[0283] When the UE performs UL transmission in the corresponding symbol, it can only perform subband UL operation, that is, it cannot perform wideband UL operation.

[0284] Option 3.

[0285] When the UE performs DL reception on the corresponding symbol, it can only perform subband DL operation, that is, it cannot perform wideband DL operation.

[0286] When the UE performs UL transmission in the corresponding symbol, it may perform wideband UL operation or subband UL operation.

[0287] <Section 5.1. Limitations on SBFD operation of UE in DL reception resources.

[0288] If the symbols used to transmit the SS / PBCH are configured as SBFD symbols, UE#2 can perform UL transmission while UE#1 is receiving the SS / PBCH. In this case, the UL signal transmitted by UE#2 can act as interference while UE#1 is receiving the SS / PBCH. Therefore, to ensure stable UE measurements, it is necessary to limit SBFD operation in the resources used to transmit the SS / PBCH.

[0289] Similarly, SBFD operation needs to be restricted on the symbols transmitting CORESET#0.

[0290] Even during the duration when the UE performs measurements (especially L3 measurements), the SBFD operation needs to be restricted to ensure that the UE can perform measurements stably.

[0291] In this context, the present disclosure proposes to restrict the SBFD operation of the UE on the following specific DL reception resources: The specific DL reception resources may include at least one of the following resources.

[0292] 1) Send the symbols of the SS / PBCH block.

[0293] 2) Symbol designated as CORESET#0.

[0294] 3) Duration for performing L3 measurements, for example, i) symbol / time resources set by SMTC (SSB-based RRM measurement timing configuration), ii) symbol / time resources set as measurement gaps.

[0295] For symbols included in the DL reception resources in which the SBFD operation of the UE is restricted as described above or symbols within a time slot including the DL reception resources, the UE may operate according to at least one of the following methods.

[0296] Method 1.

[0297] Even if a symbol is set as an SBFD symbol by network configuration, the UE can determine that the symbol is a symbol that does not operate as SBFD (hereinafter referred to as a non-SBFD symbol). Therefore, the UE can operate in such a symbol as in the existing TDD.

[0298] Method 2.

[0299] The UE determines that for a given symbol, if the symbol is set as an SBFD symbol by network configuration, it performs only DL operation. To this end, at least one of the following Alt a to Alt c can be used.

[0300] Alt a. The UE determines that it always performs DL-only operation regardless of the operation indicated by the UE for this symbol, and can only perform DL operation.

[0301] Alt b. The UE assumes that for the corresponding symbol, there is no indication from the network of sub-band DL operation, wideband UL operation or sub-band UL operation.

[0302] If wideband UL operation or subband UL operation is indicated for a symbol, or if the UE determines to perform UL operation, the UE does not perform UL transmission in that symbol. If the UE is instructed to perform wideband DL operation or subband DL operation for a given symbol, or determines to perform DL operation, the UE determines to perform wideband DL operation and performs the wideband DL operation.

[0303] Method 3.

[0304] If the corresponding symbol is set as an SBFD symbol by network configuration, the UE determines that it performs only subband DL operation or wideband DL operation for the symbol. To this end, at least one of the following Alt a to Alt c can be used.

[0305] Alt a. The UE may determine that it performs only wideband DL operation or subband DL operation in a given symbol.

[0306] In addition, if it is instructed to perform wideband operation, the UE determines that it will perform wideband DL operation in the corresponding symbol and operates. If it is instructed to perform subband operation, the UE determines that it will perform subband DL operation in the corresponding symbol and operates.

[0307] Alternatively, if wideband UL operation is indicated, the UE determines to perform wideband DL operation in the corresponding symbol and operates accordingly. If subband UL operation is indicated, the UE determines to perform subband DL operation in the corresponding symbol and operates accordingly.

[0308] Alt b. The UE assumes that the network does not instruct the UE to perform wideband UL operation or subband UL operation for the corresponding symbol. Alternatively, the UE determines that the corresponding symbol is not instructed to operate in UL.

[0309] Alt c. If wideband UL operation or subband UL operation is indicated in a symbol, or if the UE determines to perform UL operation, the UE does not perform UL transmission in the symbol.

[0310] Furthermore, for symbols included in the DL reception resources for which the UE's SBFD operation is restricted as described above, the UE determines that these symbols cannot be used for UL operation for the next N symbols. Alternatively, for symbols included in the DL reception resources for which the UE's SBFD operation is restricted as described above, the UE determines that symbols after the next N symbols can be used for UL operation.

[0311] To this end, specifically, for N subsequent symbols after the symbol included in the DL reception resources in which the SBFD operation of the UE is restricted as described above, the following operations may be performed.

[0312] Method 1.

[0313] The UE determines whether to perform only subband DL operation or wideband DL operation for the symbol.

[0314] In addition, if wideband operation is indicated, the UE determines that it will perform wideband DL operation in the corresponding symbol, and if subband operation is indicated, the UE determines that it will perform subband DL operation in the corresponding symbol.

[0315] Alternatively, additionally, if wideband UL operation is indicated, the UE determines that it will perform wideband DL operation in the corresponding symbol, and if subband UL operation is indicated, the UE determines that it will perform subband DL operation in the corresponding symbol.

[0316] Based on the above determination, the UE performs a subband DL operation or a wideband DL operation on the corresponding symbol.

[0317] Method 2.

[0318] The UE assumes that the network has not indicated the symbol to perform wideband UL operation or subband UL operation. Alternatively, the UE determines that the symbol is not indicated for performing UL operation.

[0319] Based on the above determination, the UE performs a subband DL operation or a wideband DL operation on the corresponding symbol.

[0320] Method 3.

[0321] If wideband UL operation or subband UL operation is indicated in a symbol, or if the UE determines to perform UL operation, the UE does not perform UL transmission in the symbol.

[0322] Figure 16 An operation method of a UE in a wireless communication system is shown.

[0323] Reference Figure 16 , the UE receives a first message for configuring specific downlink reception resources from a network (eg, a base station) (S161).

[0324] Here, the specific downlink reception resource may be a symbol for receiving a synchronization signal / physical broadcast channel (SS / PBCH, also referred to as an SS / PBCH block) (ie, a symbol for transmitting the SS / PBCH from the perspective of the base station).

[0325] In the time domain, the SS / PBCH block may consist of four OFDM symbols numbered in increasing order from 0 to 3 within the SS / PBCH block, and the PSS, SSS, and PBCH may be mapped to the symbols as shown in Table 7, for example.

[0326] [Table 7]

[0327]

[0328] The time domain position of the SS / PBCH block can be provided, for example, by "ssb-PositionsInBurst". Specifically, when operating in licensed spectrum, ssb-PositionsInBurst indicates the time domain position of the SS block transmitted in the half-frame in which the SS / PBCH block is present. ssb-PositionsInBurst can be provided in the form of a bitmap, where each bit corresponds to an SS / PBCH block index, such that the first bit (i.e., the leftmost bit) corresponds to SS / PBCH block index 0, the second bit corresponds to SS / PBCH block index 1, and so on. A value of 0 in the bitmap can indicate that the corresponding SS / PBCH block is not transmitted, and a value of 1 can indicate that the corresponding SS / PBCH block is transmitted.

[0329] For a half-frame with SS / PBCH blocks, the first symbol index of the candidate SS / PBCH block can be determined according to the subcarrier spacing (SCS) of the SS / PBCH block, where index 0 corresponds to the first symbol of the first time slot of the half-frame.

[0330] For example, if the SCS of the SS / PBCH block is 15 kHz, the index of the first symbol of the candidate SS / PBCH block may be {2, 8}+14·n.

[0331] Specifically, when operating without shared spectrum channel access, for carrier frequencies equal to or less than 3 GHz, n = 0, 1, and for carrier frequencies within FR1 greater than 3 GHz, n = 0, 1, 2, 3. When operating with shared spectrum channel access, n = 0, 1, 2, 3, 4.

[0332] For example, if the SCS of the SS / PBCH block is 30 kHz, the first symbol of the candidate SS / PBCH block may have an index of {4, 8, 16, 20} + 28·n. For carrier frequencies equal to or less than 3 GHz, n=0, and for carrier frequencies greater than 3 GHz in FR1, n=0, 1.

[0333] Alternatively, if the SCS of the SS / PBCH block is 30 kHz, the first symbol of the candidate SS / PBCH block may have an index of {2, 8} + 14·n. When operating without shared spectrum channel access, for paired spectrum operation, n may be 0, 1 for carrier frequencies equal to or less than 3 GHz, and 0, 1, 2, 3 for carrier frequencies within FR1 greater than 3 GHz. For unpaired spectrum operation, n = 0, 1 for carrier frequencies less than 1.88 GHz, and n = 0, 1, 2, 3 for carrier frequencies within FR1 greater than or equal to 1.88 GHz. When operating with shared spectrum channel access, n may be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

[0334] Alternatively, if the SCS of the SS / PBCH block is 120 kHz, the first symbol of the candidate SS / PBCH block may have an index of {4, 8, 16, 20} + 28·n. For carrier frequencies in FR2, n may be 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, or 18.

[0335] In a manner similar to the above example, the index of the first symbol of the candidate SS / PBCH block may also be determined for the case where the SCS of the SS / PBCH block is 240 kHz, 480 kHz, or 960 kHz.

[0336] In some implementations, the specific downlink reception resource may be a symbol for receiving CORESET#0.

[0337] CORESET#0 (which may be denoted as CORESET 0) is a special type of CORESET that carries PDCCH / DCI for SIB 1. Resource allocation (i.e., time domain and frequency domain resource allocation) for CORESET#0 is configured through the MIB (Master Information Block, i.e., PBCH of SSB). Other types of CORESETs are configured through SIB or RRCSetup / RRCReconfiguration, but CORESET#0 should be known before detecting the SIB or other RRC messages and therefore cannot be configured through the SIB or other RRC messages.

[0338] The frequency domain resource allocation (i.e., the number of RBs) of CORESET#0 can have only two options: 24 or 48 RBs. The time domain resource allocation (i.e., the number of OFDM symbols) of CORESET#0 can have only three options: 1, 2, or 3. The starting position of CORESET#0 in the frequency domain can be set based on the SSB position.

[0339] According to an embodiment, the specific downlink reception resource may be a symbol for performing a specific measurement. The specific downlink reception resource may be a duration for performing L3 measurement, for example, i) a symbol / time resource set by SMTC (SSB-based RRM measurement timing configuration), ii) a symbol / time resource set as a measurement gap.

[0340] The UE receives a second message indicating full-duplex (FD) time resources from the network (base station) (S162).

[0341] The second message may be, for example, a configuration message indicating symbols that can operate as SBFD (i.e., SBFD symbols).Depending on the embodiment, some or all of the symbols set as downlink symbols or flexible symbols by the TDD configuration message may be set as SBFD symbols by the second message.

[0342] The second message may periodically set the FD time resource (eg, SBFD symbol).For example, the second message may set the FD time resource for each time slot within a specific time slot duration consisting of a plurality of time slots.

[0343] The UE performs an FD operation based on the first message and the second message, wherein, based on the specific downlink reception resource being configured as an FD time resource through the second message, the UE determines the specific downlink reception resource as a non-FD time resource in which the FD operation is not performed (S163).

[0344] The FD operation includes at least one of: i) a subband downlink reception operation capable of performing downlink reception in a downlink subband and ii) a subband uplink transmission operation capable of performing uplink transmission in an uplink subband.

[0345] The UE may perform a wideband downlink reception operation capable of performing downlink reception over the entire system bandwidth in the non-FD time resources.

[0346] This can also be expressed as the UE not expecting to indicate, for non-FD time resources: i) a sub-band downlink reception operation capable of performing downlink reception in a downlink sub-band, ii) a sub-band uplink transmission operation capable of performing uplink transmission in an uplink sub-band, and iii) a wideband uplink transmission operation capable of performing uplink transmission in the entire system frequency band.

[0347] Alternatively, this may be expressed as the UE always performing a wideband downlink reception operation capable of performing downlink reception over the entire system bandwidth, regardless of an operation indicated for non-FD time resources.

[0348] In some embodiments, for non-FD time resources, if i) subband uplink transmission operation capable of performing uplink transmission in an uplink subband or ii) wideband uplink transmission operation capable of performing uplink transmission in the entire system bandwidth is indicated, the UE may not perform uplink transmission (i.e., subband uplink transmission, wideband uplink transmission) in the non-FD time resources despite such an indication.

[0349] In an embodiment, for non-FD time resources, if a wideband downlink reception operation or a subband downlink reception operation capable of performing downlink reception in a downlink subband is indicated, the UE may perform the wideband downlink reception operation. That is, even if a subband downlink reception operation is indicated for non-FD time resources, the wideband downlink reception operation is performed.

[0350] Figure 17 Shown according to Figure 16 An example of a method for limiting the FD operation of a UE in downlink reception resources.

[0351] Reference Figure 17 , the UE may receive a first message for configuring specific downlink reception resources. For example, the first message may be a message for setting SS / PBCH resources.

[0352] The first message may inform the UE that SS / PBCH (SSB) resources are set for symbols #2, 3, 4, and 5 of a specific time slot within a specific half-frame (eg, in units of multiple frames (or multiple half-frames)).

[0353] It is assumed that the UE receives a second message indicating full-duplex (FD) time resources from the base station, so that the UE can know, for example, that symbols #1, 4, 6, and 8 of each time slot are set as SBFD symbols for a specific time slot duration. It is also assumed that symbols #1, 4, 6, and 8 of each time slot are included in the symbols configured as downlink symbols or flexible symbols through the TDD configuration message.

[0354] In this case, in symbols #1, 6, and 8 of each slot within a specific slot duration, the UE can perform FD operation (e.g., SBFD operation) without any special restrictions. On the other hand, symbol #4 is a symbol including SS / PBCH resources, so there is a restriction that the UE cannot perform SBFD operation, and the UE performs HD operation, specifically, wideband downlink reception operation.

[0355] According to the method of the present disclosure, when an SBFD symbol is periodically set and the base station / network transmits SS / PBCH in the symbol (or when CORESET#0 is transmitted, when a signal for a specific measurement should be transmitted, etc.), the UE processes the symbol as a non-SBFD symbol and performs only a wideband downlink reception operation, thereby enabling the UE to stably perform SS / PBCH reception and preventing ambiguity in operations between the base station and the UE.

[0356] In other words, among the periodically set FD time resources, the FD time resources including resources for specific downlink reception are determined / regarded as non-FD time resources even if they are set as FD time resources, and the UE operates based on this (e.g., broadband downlink reception operation).

[0357] Figure 18 The signaling and operations between the base station and the UE are shown.

[0358] Reference Figure 18 , the base station sends a first message to the UE to configure specific downlink reception resources (S181).

[0359] The base station transmits a second message notifying the UE of the FD time resource (S182).

[0360] The UE determines an operation that the UE should actually perform in the FD time resource based on the first message and the second message ( S183 ).

[0361] For example, if the resources for receiving SS / PBCH configured through the first message are set as FD time resources through the second message, the UE may regard / determine the FD time resources corresponding to the resources for receiving SS / PBCH as non-FD time resources and perform only the broadband downlink reception operation among the broadband uplink transmission operation, broadband downlink reception operation, subband uplink transmission operation, and subband downlink reception operation. If resources other than the resources set through the first message are set as FD time resources through the second message, the UE may perform the FD operation.

[0362] The base station and the UE perform an FD operation or an HD operation (wideband downlink reception operation) in the corresponding FD time resource (S184).

[0363] Despite Figure 18 Although not shown, the base station may send a TDD (Time Division Duplex) configuration message to the UE. In this case, the FD time resources may be included in the symbols configured as downlink symbols or flexible symbols by the TDD configuration message. The TDD configuration message may be, for example, at least one of the configuration messages described in Table 5 and Table 6 above.

[0364] <Section 5.2. Limitations of SBFD Operations of UEs in UL Receive Resources.

[0365] In the case of transmitting a symbol of PRACH, if the symbol operates as an SBFD symbol, when the base station receives the PRACH, DL transmission transmitted by the base station or another base station may operate as interference.

[0366] Alternatively, the UE may need to send PRACH, but a DL signal / channel is scheduled on that symbol, making it difficult for the UE to send PRACH. With this in mind, it is necessary to limit SBFD operation on the resources where PRACH can be sent to ensure that the UE can send PRACH when needed and the base station can reliably receive them.

[0367] In this context, the present disclosure proposes to limit and apply the SBFD operation of the UE with respect to specific UL transmission resources (eg, symbols included in a RACH opportunity).

[0368] According to the present disclosure, for symbols included in UL transmission resources to which the SBFD operation of the UE is restricted and applied as described above or symbols within a slot including the UL transmission resources, the UE may operate as follows.

[0369] Method 1.

[0370] Even if a symbol is set as an SBFD symbol by network configuration, the UE determines that the symbol is a symbol not operated as SBFD (hereinafter referred to as a non-SBFD symbol). Therefore, the UE operates in such a symbol as in the conventional TDD.

[0371] Method 2.

[0372] If the corresponding symbol is set as an SBFD symbol by network configuration, the UE determines that it only performs wideband UL operation for the symbol. To this end, at least one of the following methods Alt a to Alt c may be used.

[0373] Alt a. Regardless of the operation of the UE indicated by the symbol, the UE always determines that it is performing wideband UL operation and performs the wideband UL operation.

[0374] Alt b. The UE assumes that the network does not indicate wideband DL operation, subband DL operation or subband UL operation for a given symbol.

[0375] Alt c. If wideband DL operation or subband DL operation is indicated for the symbol, or if the UE determines to perform DL operation, the UE does not perform DL reception for the symbol. If wideband UL operation or subband UL operation is indicated for the symbol, or if the UE determines to perform UL operation, the UE determines to perform wideband UL operation and performs the wideband UL operation.

[0376] Method 3.

[0377] If the corresponding symbol is set as an SBFD symbol by network configuration, the UE determines that it performs only subband UL operation or wideband DL operation for the symbol. To this end, at least one of the following methods Alt a to Alt c may be used.

[0378] Alt a. The UE determines whether it performs only wideband UL operation or subband UL operation in the corresponding symbol.

[0379] In addition, if it is instructed to perform wideband operation, the UE determines that it will perform wideband UL operation in the corresponding symbol and operates. If it is instructed to perform subband operation, the UE determines that it will perform subband UL operation in the corresponding symbol and operates.

[0380] Alternatively, if wideband DL operation is indicated, the UE determines to perform wideband UL operation in the corresponding symbol and operates. If subband DL operation is indicated, the UE determines to perform subband UL operation in the corresponding symbol and operates.

[0381] Altb. The UE assumes that the network does not instruct the UE to perform a wideband DL operation or a subband DL operation for the corresponding symbol. Alternatively, the UE determines that the network does not instruct the UE to perform a DL operation for the corresponding symbol.

[0382] Alt c. If wideband DL operation or subband DL operation is indicated for the symbol, or if the UE determines to perform DL operation, the UE does not perform DL reception for the symbol.

[0383] In addition, for the N symbols preceding the symbols included in the UL transmission resources to which the SBFD operation of the UE is limited as described above, the UE determines that it cannot operate in the DL. Alternatively, for the symbols included in the UL transmission resources to which the SBFD operation of the UE is limited as described above, the UE determines that the symbols preceding N symbols can operate as the DL.

[0384] To this end, specifically, for the first N symbols of the symbols included in the UL transmission resources applied by limiting the SBFD operation of the UE as described above, the following operations may be performed.

[0385] Method 1.

[0386] The UE determines whether it performs only subband UL operation or wideband UL operation on those symbols.

[0387] In addition, if the UE is instructed to perform wideband operation, the UE determines that it will perform wideband UL operation in the corresponding symbol, and if the UE is instructed to perform subband operation, the UE determines that it will perform subband UL operation in the corresponding symbol.

[0388] Alternatively, additionally, if wideband DL operation is indicated, the UE determines that it will perform wideband UL operation in the corresponding symbol, and if subband DL operation is indicated, the UE determines that it will perform subband UL operation in the corresponding symbol.

[0389] Based on the above determination, the UE performs subband UL operation or wideband UL operation in the corresponding symbol.

[0390] Method 2.

[0391] The UE assumes that the network has not instructed the UE to perform wideband DL operation or subband DL operation for the corresponding symbol, or the UE determines that it has not been instructed to operate as DL for the symbol.

[0392] Based on the above determination, the UE performs subband UL operation or wideband UL operation in the corresponding symbol.

[0393] Method 3.

[0394] If wideband UL operation or subband DL operation is indicated for a symbol, or if the UE determines to perform DL operation, the UE does not perform DL transmission in the symbol.

[0395] Figure 19 A wireless device suitable for use with this specification is shown.

[0396] Reference Figure 19 , the first wireless device 100 and the second wireless device 200 can transmit radio signals through various RATs (e.g., LTE and NR).

[0397] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may also include one or more transceivers 106 and / or one or more antennas 108. The processor 102 may control the memory 104 and / or the transceiver 106 and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document. For example, the processor 102 may process information within the memory 104 to generate first information / signals, and may then transmit a radio signal including the first information / signals through the transceiver 106. In addition, the processor 102 may receive a radio signal including second information / signals through the transceiver 106, and may then store information obtained from signal processing of the second information / signals in the memory 104. The memory 104 may be connected to the processor 102 and may store various pieces of information related to the operation of the processor 102. For example, the memory 104 may store software code including instructions for executing part or all of the processing controlled by the processor 102 or for executing the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. Here, the processor 102 and the memory 104 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 106 may be connected to the processor 102 and may transmit and / or receive radio 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 a radio frequency (RF) unit. In this specification, a wireless device may represent a communication modem / circuit / chip. The processor 102 receives a first message configuring specific downlink reception resources, receives a second message notifying full-duplex (FD) time resources, and performs FD operations based on the first message and the second message. Based on configuring the specific downlink reception resources as FD time resources through the second message, the UE determines the specific downlink reception resources as non-FD time resources where an FD operation is not performed, and performs an operation based on the determination.

[0398] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may also include one or more transceivers 206 and / or one or more antennas 208. The processor 202 may control the memory 204 and / or the transceiver 206 and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flows disclosed in this document. For example, the processor 202 may process information in the memory 204 to generate third information / signals, and may then transmit a radio signal including the third information / signals through the transceiver 206. In addition, the processor 202 may receive a radio signal including fourth information / signals through the transceiver 206 and may store information obtained by processing 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 store software code including instructions for executing part or all of the processing controlled by the processor 202 or for executing the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. Here, the processor 202 and the memory 204 may be part of a communication modem / circuitry / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 206 may be connected to the processor 202 and may transmit and / or receive radio 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 refer to a communication modem / circuitry / chip. The processor 202 sends a first message to a user equipment (UE) to configure specific downlink reception resources, sends a second message to the UE to notify full-duplex (FD) time resources, and performs FD operations with the UE based on the first and second messages. The specific downlink reception resource is configured as an FD time resource based on the second message, and the base station does not perform an FD operation with the UE in the specific downlink reception resource.

[0399] Hereinafter, the hardware elements of the wireless devices 100 and 200 will be described in more detail. One or more protocol layers may be implemented by, but are not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more protocol data units (PDUs) and / or one or more service data units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. One or more processors 102 and 202 may generate a signal (e.g., a baseband signal) including a PDU, an SDU, a message, control information, data, or information according to the functions, procedures, proposals, and / or methods disclosed in this document, and may provide the generated signal to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive a signal (e.g., a baseband signal) from one or more transceivers 106 and 206, and may obtain the PDU, SDU, message, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flow charts disclosed in this document.

[0400] The one or more processors 102 and 202 may be referred to as a controller, microcontroller, microprocessor, or microcomputer. The one or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in the one or more processors 102 and 202. The one or more processors 102 and 202 may be implemented using at least one computer readable medium (CRM) including instructions to be executed by at least one processor.

[0401] That is, at least one computer-readable medium (CRM) has instructions for execution by at least one processor to perform operations, the operations including: receiving a first message for configuring specific downlink reception resources, receiving a second message for notifying full-duplex (FD) time resources, and performing FD operations based on the first message and the second message. Based on configuring the specific downlink reception resources as FD time resources via the second message, the UE determines that the specific downlink reception resources are non-FD time resources for which the FD operation is not performed, and performs operations based on the determination.

[0402] The descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document may be included in one or more processors 102 and 202, or stored in one or more memories 104 and 204 so as to be driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software in the form of code, commands, and / or command sets.

[0403] One or more memories 104 and 204 can be connected to one or more processors 102 and 202 and can store various types of data, signals, messages, information, programs, codes, instructions and / or commands. One or more memories 104 and 204 can be configured as read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drive, registers, cache, computer-readable storage media and / or combinations thereof. At least one memory 104 and 204 can be located internally and / or externally to one or more processors 102 and 202. In addition, one or more memories 104 and 204 can be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0404] One or more transceivers 106 and 206 can transmit user data, control information, and / or radio signals / channels mentioned in the methods and / or operational flowcharts disclosed in this document to one or more other devices. One or more transceivers 106 and 206 can receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 can be connected to one or more processors 102 and 202 and can transmit and receive radio signals. For example, one or more processors 102 and 202 can control one or more transceivers 106 and 206 to transmit user data, control information, or radio signals to one or more other devices. In addition, one or more processors 102 and 202 can control one or more transceivers 106 and 206 to receive user data, control information, or radio signals from one or more other devices. In addition, one or more transceivers 106 and 206 can be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 can be configured to transmit or receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operational flow charts disclosed in this document through one or more antennas 108 and 208. In this document, one or more antennas can be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 can convert received radio signals / channels, etc. from RF band signals to baseband signals so that the received user data, control information, radio signals / channels, etc. can be processed using one or more processors 102 and 202. One or more transceivers 106 and 206 can convert user data, control information, radio signals / channels, etc. processed using one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more of the transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0405] Figure 20 Here, the signal processing can be performed in Figure 19 is executed in processors 102 and 202.

[0406] Reference Figure 20 , a transmitting device in a UE or a BS (e.g., a processor, a processor and a memory, or a processor and a transceiver) 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.

[0407] The transmitting device may transmit one or more codewords. The coded bits in each codeword are scrambled by the corresponding scrambler 301 and transmitted on the physical channel. The codeword may be referred to as a data string and may be equivalent to a transport block as a data block provided by the MAC layer.

[0408] The corresponding modulator 302 can modulate the scrambled bits into complex-valued modulation symbols. The modulator 302 can modulate the scrambled bits according to the modulation scheme to arrange the complex-valued modulation symbols representing the position on the signal constellation diagram. The modulation scheme is not limited, and m-PSK (m-phase shift keying) or m-QAM (m-quadrature amplitude modulation) can be used to modulate the encoded data. The modulator can be called a modulation mapper.

[0409] The complex-valued modulation symbols may be mapped to one or more transmission layers by a layer mapper 303. The complex-valued modulation symbols on each layer may be mapped by an antenna port mapper 304 for transmission on an antenna port.

[0410] Each resource block mapper 305 can map the complex-valued modulation symbols for each antenna port to appropriate resource elements in a virtual resource block allocated for transmission. The resource block mapper can map the virtual resource blocks to physical resource blocks according to an appropriate mapping scheme. The resource block mapper 305 can allocate the complex-valued modulation symbols for each antenna port to appropriate subcarriers and multiplex the complex-valued modulation symbols according to users.

[0411] Signal generator 306 can modulate complex-valued modulation symbols, i.e., antenna-specific symbols, for each antenna port according to a specific modulation scheme (e.g., OFDM (Orthogonal Frequency Division Multiplexing)) to generate complex-valued time-domain OFDM symbol signals. The signal generator can perform an IFFT (Inverse Fast Fourier Transform) on the antenna-specific symbols and insert a CP (Cyclic Prefix) into the IFFT-processed time-domain symbols. The OFDM symbols undergo digital-to-analog conversion and up-conversion before being transmitted to a receiving device via each transmit antenna. The signal generator may include an IFFT module, a CP insertion unit, a digital-to-analog converter (DAC), and an up-converter.

[0412] Figure 21 Another example of the structure of the signal processing module in the transmitting device is illustrated. Here, the signal processing can be performed in the processor of the UE / BS, for example Figure 19 processors 102 and 202.

[0413] Reference Figure 21 , a transmitting device in a UE or a BS (e.g., a processor, a processor and a memory, or a processor and a transceiver) 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.

[0414] The sending device may scramble the coded bits in the codeword through the corresponding scrambler 401 and then send the scrambled coded bits through the physical channel.

[0415] The scrambled bits are modulated into complex-valued modulation symbols by a corresponding modulator 402. The modulator can modulate the scrambled bits according to a predetermined modulation scheme to arrange the complex-valued modulation symbols representing the position on the signal constellation diagram. The modulation scheme is not limited, and π / 2-BPSK (π / 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.

[0416] The complex-valued modulation symbols may be mapped to one or more transmission layers by a layer mapper 403 .

[0417] The complex-valued modulation symbols on each layer may be precoded by the precoder 404 so as to be transmitted on the antenna port. Here, the precoder may perform transform precoding on the complex-valued modulation symbols and then perform precoding. Alternatively, the precoder may perform precoding without transform precoding. The precoder 404 may process the complex-valued modulation symbols according to MIMO using multiple transmit antennas to output antenna-specific symbols and allocate the antenna-specific symbols to the corresponding resource block mapper 405. The output z of the precoder 404 may be obtained by multiplying the output y of the layer mapper 403 by the N×M precoding matrix W. Here, N is the number of antenna ports and M is the number of layers.

[0418] Each resource block mapper 405 maps the complex-valued modulation symbols for each antenna port to the appropriate resource elements in the virtual resource block allocated for transmission.

[0419] The resource block mapper 405 may allocate complex-valued modulation symbols to appropriate subcarriers and multiplex the complex-valued modulation symbols according to users.

[0420] Signal generator 406 can modulate the complex-valued modulation symbols according to a specific modulation scheme (e.g., OFDM) to generate a complex-valued time-domain OFDM symbol signal. Signal generator 406 can perform an IFFT (Inverse Fast Fourier Transform) on the antenna-specific symbols and insert a CP (Cyclic Prefix) into the time-domain symbols that have undergone the IFFT. The OFDM symbols undergo digital-to-analog conversion and up-conversion before being transmitted to the receiving device via each transmit antenna. Signal generator 406 may include an IFFT module, a CP insertion unit, a digital-to-analog converter (DAC), and an up-converter.

[0421] The signal processing process of the receiving device may be the inverse process of the signal processing process of the transmitting device. Specifically, the processor of the transmitting device decodes and demodulates the RF signal received through the antenna port of the transceiver. The receiving device may include multiple receiving antennas, and the signals received by the receiving antennas are restored to baseband signals, which are then multiplexed and demodulated according to MIMO to restore them to data strings intended to be sent by the transmitting device. The receiving device may include: a signal recovery unit that restores the received signal to a baseband signal; a multiplexer that is used to combine and multiplex the received signals; and a channel demodulator that is used to demodulate the multiplexed signal string into corresponding codewords. The signal recovery unit, the multiplexer, and the channel demodulator may be configured as an integrated module or an independent module for performing their functions. More specifically, the signal recovery unit may include: an analog-to-digital converter (ADC) for converting an analog signal into a digital signal; a CP removal unit for removing the CP from the digital signal; a FET module for applying an FFT (Fast Fourier Transform) to the CP-removed signal to output a frequency domain signal; and a resource element demapper / equalizer for restoring the frequency domain symbols into antenna-specific symbols. The antenna-specific symbols are restored to a transmission layer by a multiplexer, and the transmission layer is restored to a codeword intended to be transmitted by the transmitting device by a channel demodulator.

[0422] Figure 22 An example of a wireless communication device according to an implementation example of the present disclosure is illustrated.

[0423] Reference Figure 22 A wireless communication device, such as a UE, may include at least one of a processor 2310 (e.g., a digital signal processor (DSP) or a microprocessor), a transceiver 2335, a power management module 2305, an antenna 2340, a battery 2355, a display 2315, a keyboard 2320, a global positioning system (GPS) chip 2360, a sensor 2365, a memory 2330, a subscriber identity module (SIM) card 2325, a speaker 2345, and a microphone 2350. Multiple antennas and multiple processors may be provided.

[0424] The processor 2310 can implement the functions, processes, and methods described in this specification. Figure 22 Processor 2310 in Figure 23 The memory 2330 in may be Figure 19 Processors 102 and 202 in.

[0425] The memory 2330 is connected to the processor 2310 and stores information related to the processor operation. The memory can be located inside or outside the processor and connected to the processor through various technologies such as wired connection and wireless connection. Figure 22 The memory 2330 in may be Figure 19 Memories 104 and 204 in.

[0426] The user can enter various types of information, such as a phone number, using various techniques, such as pressing buttons on the keypad 2320 or activating voice using the microphone 2350. The processor 2310 can receive and process the user information and perform appropriate functions, such as placing a call using the entered phone number. In some scenarios, data can be retrieved from the SIM card 2325 or the memory 2330 to perform the appropriate function. In some scenarios, the processor 2310 can display various types of information and data on the display 2315 for the user's convenience.

[0427] The transceiver 2335 is connected to the processor 2310 and transmits and / or receives RF signals. The processor can control the transceiver to initiate communication or transmit RF signals including various types of information or data, such as voice communication data. The transceiver includes a transmitter and a receiver for transmitting and receiving RF signals. Antenna 2340 can facilitate the transmission and reception of RF signals. In some implementation examples, when the transceiver receives an RF signal, the transceiver can forward the signal and convert it to baseband frequency for processing by the processor. The signal can be processed using various techniques, such as conversion into audible or readable information, for output through the speaker 2345. Figure 22 The transceiver in can be Figure 25 The transceivers 106 and 206 in FIG.

[0428] although Figure 22 Although not shown in the figure, the UE may also include various components, such as a camera and a universal serial bus (USB) port. For example, the camera may be connected to the processor 2310.

[0429] Figure 22 This is an example of implementation of UE, and the implementation example of the present disclosure is not limited thereto. UE does not necessarily have to include Figure 22 That is, some components, such as keyboard 2320, GPS chip 2360, sensor 2365, and SIM card 2325, may not be essential components. In this case, they may not be included in the UE.

[0430] Figure 23 An example of a processor 2000 is shown.

[0431] Reference Figure 23 , the processor 2000 may include a control channel transceiver 2010 and a data channel transceiver 2020. For example, the processor 2000 may execute from the perspective of the UE Figures 16 to 22The processor 2000 may be Figure 19 Examples of processors 102 and 202.

[0432] Figure 24 An example of a processor 3000 is shown.

[0433] Reference Figure 24 , the processor 3000 may include a control information / data generating module 3010 and a sending / receiving module 3020. For example, the processor 3000 may execute from the perspective of a base station or a network Figures 16 to 22 The processor 3000 may be Figure 19 Examples of processors 102, 202.

[0434] Figure 25 Another example of a wireless device is shown.

[0435] Reference Figure 25 , a wireless device may include one or more processors 102 and 202 , one or more memories 104 and 204 , one or more transceivers 106 and 206 , and one or more antennas 108 and 208 .

[0436] Figure 25 Examples of wireless devices described in Figure 19 The example of the wireless device described in is different in that Figure 19 The processors 102 and 202 are separated from the memories 104 and 204. Figure 25 In the example shown, the memories 104 and 204 are included in the processors 102 and 202. That is, the processor and the memory may constitute a chipset.

[0437] Figure 26 Another example of a wireless device applied to this specification is shown. The wireless device can be implemented in various forms depending on use cases / services.

[0438] Reference Figure 26 , the wireless devices 100 and 200 may correspond to Figure 19 The wireless devices 100 and 200 may be configured by various elements, components, units / parts and / or modules. For example, each of the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130 and an additional component 140. The communication unit may include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 may include one or more processors 102 and 202 and / or one or more memories 104 and 204. For example, the transceiver 114 may include Figure 19The control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional components 140 and controls the overall operation of the wireless device. For example, the control unit 120 can control the electrical / mechanical operation 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 the outside (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface, or store information received from the outside (e.g., other communication devices) via the communication unit 110 through the wireless / wired interface in the memory unit 130.

[0439] The additional component 140 may be configured differently depending on the type of wireless device. For example, the additional component 140 may include at least one of a power supply unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device may be implemented in the form of the robot 100a in Figure 34, but is not limited thereto. Vehicles 100b-1, 100b-2 in Figure 34, XR devices 100c in Figure 34, handheld devices 100d in Figure 34, home appliances 100e in Figure 34, IoT devices 100f in Figure 34, digital broadcast UEs, hologram devices, public safety devices, MTC devices, medical devices, FinTech devices (or financial devices), security devices, climate / environmental devices, AI servers / devices 400 in Figure 34, BSs 200 in Figure 34, network nodes, etc. The wireless device may be used in a mobile or fixed location depending on the use case / service.

[0440] exist Figure 26In the present invention, the various elements, components, units / parts, and / or modules within the wireless devices 100 and 200 may be fully interconnected via a wired interface, or at least a portion may be wirelessly connected via the communication unit 110. For example, within the wireless devices 100 and 200, the control unit 120 and the communication unit 110 may be connected via a wired interface, and the control unit 120 and the first unit (e.g., 130 and 140) may be connected via the communication unit 110. In addition, each element, component, unit / part, and / or module within the wireless devices 100 and 200 may also include one or more elements. For example, the control unit 120 may be composed of one or more processor groups. For example, the control unit 120 may be composed of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing processor, and a memory control processor. As another example, the memory unit 130 includes random access memory (RAM), dynamic RAM (DRAM), read only memory (ROM), flash memory, volatile memory, non-volatile memory, and / or a combination thereof.

[0441] Figure 27 The handheld device used in this specification is shown. The handheld device may include a smartphone, a smart tablet, a wearable device (e.g., a smart watch or smart glasses), or a portable computer (e.g., a notebook). The handheld device may be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT).

[0442] Reference Figure 27 The portable device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a memory unit (130), a power supply unit (140a), an interface unit (140b), and an input / output unit (140c). The antenna unit (108) may be configured as a part of the communication unit (110). Blocks 110 to 130 / 140a to 140c correspond to Figure 26 Frame 110 to 130 / 140.

[0443] The communication unit (110) can send and receive signals (e.g., data, control signals, etc.) with other wireless devices and base stations. The control unit (120) can control the components of the portable device (100) to perform various operations. The control unit (120) can include an AP (application processor). The memory unit (130) can store data / parameters / programs / codes / commands required to operate the portable device (100). In addition, the memory unit (130) can store input / output data / information, etc. The power supply unit (140a) supplies power to the portable device (100) and can include a wired / wireless charging circuit, a battery, etc. The interface unit (140b) can support connection between the portable device (100) and other external devices. The interface unit (140b) can include various ports for connecting to external devices (e.g., audio input / output port, video input / output port). The input / output unit (140c) can input or output image information / signals, audio information / signals, data and / or information input from a user. The input / output unit (140c) may include a camera, a microphone, a user input unit, a display unit (140d), a speaker and / or a haptic module.

[0444] For example, in the case of data communication, the input / output unit (140c) can obtain information / signals (e.g., touch, text, voice, image, video) input by the user and can store the obtained information / signals in the memory unit (130). The communication unit (110) converts the information / signals stored in the memory into wireless signals and can directly transmit the converted wireless signals to other wireless devices or base stations. In addition, the communication unit (110) can receive wireless signals from other wireless devices or base stations and then restore the received wireless signals to the original information / signals. The restored information / signals can be stored in the memory unit (130) and then output in various forms (e.g., text, voice, image, video, touch) through the input / output unit (140c).

[0445] Figure 28 A communication system 1 applied to this specification is shown.

[0446] Reference Figure 28, the communication system 1 applied to this specification includes a wireless device, a base station (BS) and a network. Herein, a wireless device refers to a device that communicates using a radio access technology (RAT) (e.g., 5G New RAT (NR) or Long Term Evolution (LTE)) and may be referred to as a communication / radio / 5G device. The wireless device may include, but is not limited to, a robot 100a, a vehicle 100b-1 and 100b-2, an extended reality (XR) device 100c, a handheld device 100d, a home appliance 100e, an Internet of Things (IoT) device 100f, and an artificial intelligence (AI) device / server 400. For example, a vehicle may include a vehicle with a wireless communication function, an autonomous vehicle, and a vehicle capable of communicating between vehicles. Here, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). XR devices may include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) installed in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, and the like. Handheld devices may include smartphones, smart tablets, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., laptops). Home appliances may include televisions, refrigerators, and washing machines. IoT devices may include sensors and smart meters. For example, a base station (BS) and a network may be implemented as wireless devices, and a specific wireless device 200a may operate as a base station (BS) / network node relative to other wireless devices.

[0447] Wireless devices 100a to 100f can connect to a network 300 via a BS 200. AI technology can be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f can connect 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, or a 5G (e.g., NR) network. Although wireless devices 100a to 100f can communicate with each other via the BS 200 / network 300, wireless devices 100a to 100f can perform direct communication (e.g., sidelink communication) with each other without going through the BS / network. For example, vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). In addition, IoT devices (e.g., sensors) can perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0448] Wireless communication / connection 150a, 150b, or 150c may be established between wireless devices 100a to 100f / BS 200 or BS 200 / BS 200. Here, wireless communication / connection may be established via various RATs (e.g., 5G NR), such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication), or inter-BS communication (e.g., relay, integrated access and backhaul (IAB)). The wireless device and the BS / wireless device may transmit / receive radio signals to / from each other via the wireless communication / connection 150a and 150b. For example, the wireless communication / connection 150a and 150b may transmit / receive signals via various physical channels. To this end, at least a portion of various configuration information configuration processes, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation processes for transmitting / receiving radio signals may be performed based on various proposals of the present disclosure.

[0449] In addition, NR supports multiple parameter sets (or subcarrier spacing (SCS)) to support various 5G services. For example, if the SCS is 15kHz, it can support wide areas in traditional cellular bands. If the SCS is 30kHz / 60kHz, it supports dense cities, lower latency and wider carrier bandwidth. If the SCS is 60kHz or higher, bandwidth greater than 24.25GHz is used to overcome phase noise.

[0450] The NR frequency band can be defined as two types of frequency ranges (FR1, FR2). The values ​​of the frequency ranges can vary. For example, the two types of frequency ranges (FR1, FR2) can be as shown in Table 8 below. For ease of explanation, among the frequency ranges used in the NR system, FR1 can represent "below 6 GHz range" and FR2 can represent "above 6 GHz range" and can also be called millimeter wave (mmW).

[0451] [Table 8]

[0452] Frequency range specification Corresponding frequency range Subcarrier spacing (SCS) FR1 450MHz to 6000MHz 15, 30, 60kHz FR2 24250MHz to 52600MHz 60, 120, 240kHz

[0453] As described above, the value of the frequency range in the NR system can be changed. For example, as shown in Table 9 below, FR1 may include a frequency band in the range of 410 MHz to 7125 MHz. That is, FR1 may include a frequency band of at least 6 GHz (or 5850 MHz, 5900 MHz, 5925 MHz, etc.). For example, the frequency band of at least 6 GHz (or 5850 MHz, 5900 MHz, 5925 MHz, etc.) included in FR1 may include an unlicensed frequency band. The unlicensed frequency band can be used for various purposes, for example, an unlicensed frequency band for vehicle-specific communications (e.g., autonomous driving).

[0454] [Table 9]

[0455] Frequency range specification Corresponding frequency range Subcarrier spacing (SCS) FR1 410MHz to 7125MHz 15, 30, 60kHz FR2 24250MHz to 52600MHz 60, 120, 240kHz

[0456] The claims disclosed in this specification can be combined in various ways. For example, the technical features in the method claims of this specification can be combined to be implemented or performed in a device, and the technical features in the device claims of this specification can be combined to be implemented or performed in a method. In addition, the technical features in the method claims and device claims of this specification can be combined to be implemented or performed in a device. In addition, the technical features in the method claims and device claims of this specification can be combined to be implemented or performed in a method.

Claims

1. A method for operating a user equipment (UE) in a wireless communication system, the method comprising: receiving a first message for configuring specific downlink reception resources; receiving a second message notifying full-duplex FD time resources; as well as performing an FD operation based on the first message and the second message, Wherein, based on configuring the specific downlink reception resource as an FD time resource through the second message, the UE determines the specific downlink reception resource as a non-FD time resource in which the FD operation is not performed.

2. The method according to claim 1, wherein The specific downlink reception resource is a symbol for receiving a synchronization signal / physical broadcast channel SS / PBCH.

3. The method according to claim 1, wherein The specific downlink reception resource is a symbol for receiving CORESET#0.

4. The method according to claim 1, wherein The specific downlink reception resource is a symbol used to perform specific measurement.

5. The method according to claim 1, wherein The FD operation includes at least one of: i) a sub-band downlink reception operation capable of performing downlink reception in a downlink sub-band and ii) a sub-band uplink transmission operation capable of performing uplink transmission in an uplink sub-band.

6. The method according to claim 1, wherein A wideband downlink reception operation capable of performing downlink reception over the entire system bandwidth is performed in the non-FD time resources.

7. The method according to claim 6, wherein: The UE does not expect to indicate, for the non-FD time resources: i) a sub-band downlink reception operation capable of performing downlink reception in a downlink sub-band, ii) a sub-band uplink transmission operation capable of performing uplink transmission in an uplink sub-band, and iii) a wideband uplink transmission operation capable of performing uplink transmission in the entire system bandwidth.

8. The method according to claim 6, wherein: Based on indicating for the non-FD time resources i) a subband uplink transmission operation capable of performing uplink transmission in an uplink subband or ii) a wideband uplink transmission operation capable of performing uplink transmission in the entire system bandwidth, the UE does not perform uplink transmission in the non-FD time resources.

9. The method according to claim 6, wherein: The UE performs the broadband downlink reception operation based on indicating a broadband downlink reception operation or a subband downlink reception operation capable of performing downlink reception in a downlink subband for the non-FD time resource.

10. The method according to claim 1, wherein The UE always performs a wideband downlink reception operation capable of performing downlink reception over the entire system bandwidth regardless of the operation indicated for the non-FD time resources.

11. The method according to claim 1 , further comprising: A time division duplex (TDD) configuration message is received, wherein the FD time resource is included in a symbol configured as a downlink symbol or a flexible symbol through the TDD configuration message.

12. A user equipment (UE), comprising: at least one transceiver; at least one memory; as well as at least one processor operatively coupled to the at least one memory and the at least one transceiver, wherein the at least one processor is adapted to: receiving a first message for configuring specific downlink reception resources; receiving a second message notifying full-duplex FD time resources; and performing an FD operation based on the first message and the second message, Wherein, based on configuring the specific downlink reception resource as an FD time resource through the second message, the UE determines the specific downlink reception resource as a non-FD time resource in which the FD operation is not performed.

13. A device for a user equipment (UE), the device comprising: at least one memory; as well as at least one processor operatively coupled to the at least one memory, Wherein, the at least one processor is adapted to: receiving a first message for configuring specific downlink reception resources; receiving a second message notifying full-duplex FD time resources; and performing an FD operation based on the first message and the second message, Wherein, based on configuring the specific downlink reception resource as an FD time resource through the second message, the UE determines the specific downlink reception resource as a non-FD time resource in which the FD operation is not performed.

14. At least one computer-readable medium (CRM) having instructions to be executed by at least one processor to perform operations comprising: receiving a first message for configuring specific downlink reception resources; receiving a second message notifying full-duplex FD time resources; as well as performing an FD operation based on the first message and the second message, Wherein, based on configuring the specific downlink reception resource as an FD time resource through the second message, the UE determines the specific downlink reception resource as a non-FD time resource in which the FD operation is not performed.

15. A method of operating a base station in a wireless communication system, the method comprising: Sending a first message for configuring specific downlink reception resources to a user equipment UE; Sending a second message notifying full-duplex FD time resources to the UE; as well as performing an FD operation with the UE based on the first message and the second message, Wherein, based on configuring the specific downlink reception resource as an FD time resource through the second message, the base station does not perform the FD operation with the UE in the specific downlink reception resource.

16. A base station, comprising: at least one transceiver; at least one memory; as well as at least one processor operatively coupled to the at least one memory and the at least one transceiver, wherein the at least one processor is adapted to: Sending a first message for configuring specific downlink reception resources to a user equipment UE; Sending a second message notifying full-duplex FD time resources to the UE; and performing an FD operation with the UE based on the first message and the second message, Wherein, based on configuring the specific downlink reception resource as an FD time resource through the second message, the base station does not perform the FD operation with the UE in the specific downlink reception resource.

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