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

Abstract

An operation method of an apparatus in a wireless communication system and the apparatus are provided. The apparatus may be a terminal, a chipset, or a base station. The terminal determines an available time slot among the plurality of time slots, and repeatedly performs uplink transmission in the available time slot. When a specific time slot among the plurality of time slots is a sub-band full duplex (SB-FD) time slot including both an uplink sub-band resource and a non-uplink sub-band resource in a frequency domain, if the non-uplink sub-band resource of the specific time slot overlaps with an uplink resource for uplink transmission, the non-uplink sub-band resource of the specific time slot does not overlap with the uplink resource for uplink transmission. If so, the particular time slot is excluded from the count of available time slots.

Description

Technical Field

[0001] The present disclosure relates to an operation method of a device in a wireless communication system and a device using the method. 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 considering services / UEs that are sensitive to reliability / latency is under discussion. The introduction of next-generation radio access technologies that consider enhanced mobile broadband communications (eMBB), massive MTC (mMTC), and ultra-reliable low latency communications (URLLC) is under discussion. In the present disclosure, for convenience, this new technology may be referred to as a new radio access technology (new RAT or NR).

[0003] In NR, full-duplex (FD) operation can be performed. When performing FD operation, downlink reception and uplink transmission can occur simultaneously in a given time resource. The difference with half-duplex (HD) operation is that only one of downlink reception and uplink transmission can be performed in a given time resource. For FD operation, i) in the same time resource, some frequency resources can be allocated for downlink subbands and other frequency resources can be allocated for uplink subbands, or ii) frequency resources that can be used for both downlink reception and uplink transmission in the same time resource can be allocated.

[0004] In an FD environment, a time resource may include both FD symbols and HD symbols. In FD symbols, a user equipment (UE) may perform FD operations. In FD symbols, a UE may perform uplink transmission using resources within an uplink subband.

[0005] During repeated transmission of the uplink channel, for each repetition, FD symbols and non-FD symbols (e.g., HD symbols) may be used for transmission. In this case, the frequency resources allocated for transmission of the uplink channel in the FD symbols may overlap with frequency resources that are not in the uplink subband. In this case, the operation of the UE should be clearly defined so that there is no misunderstanding between the base station and the UE. Summary of the invention

[0006] Technical issues

[0007] 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.

[0008] Solution

[0009] A method for operating a device in a wireless communication system and a device using the method are provided. The method includes the following steps: determining an available time slot among a plurality of time slots, and repeatedly performing uplink transmission in the available time slot. Here, when a specific time slot among the plurality of time slots is a full-duplex (FD) time slot including both uplink subband resources and non-uplink subband resources in the frequency domain and the non-uplink subband resources of the specific time slot overlap with the uplink resources used for uplink transmission, the specific time slot is excluded from the count of available time slots.

[0010] Beneficial Effects

[0011] When repeated transmission is performed on the uplink channel, the utilization rate of the allocated resources can be improved.

[0012] Furthermore, the operations between the base station and the UE can be accurately predicted, thereby improving the efficiency of communications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A wireless communication system to which the present disclosure can be applied is illustrated.

[0014] Figure 2 is a block diagram illustrating a radio protocol architecture for a user plane.

[0015] Figure 3 is a block diagram illustrating a radio protocol architecture for a control plane.

[0016] Figure 4 The system structure of the next generation radio access network (NG-RAN) to which NR is applied is illustrated.

[0017] Figure 5 Illustrate the functional division between NG-RAN and 5GC.

[0018] Figure 6 The frame structure applicable to NR is illustrated.

[0019] Figure 7 The time slot structure of the NR frame is illustrated.

[0020] Figure 8 CORESET is instantiated.

[0021] Fig. 9 An example of a frame structure for a new radio access technology is illustrated.

[0022] Fig.10 The structure of a self-contained time slot is illustrated.

[0023] Fig.11 Physical channels and typical signal transmission are illustrated.

[0024] Fig.12 An example of how full duplex is applied within a carrier is illustrated.

[0025] Fig.13 An example is shown in which time resources for half-duplex (HD) operation and time resources for full-duplex (FD) operation (eg, SB-FD or SS-FD) coexist.

[0026] Fig.14 Examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource are shown.

[0027] Fig.15 Another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource is shown.

[0028] Fig.16 A method of operating a UE in a wireless communication system is illustrated.

[0029] Fig.17 UE operation according to the existing standard specification in a time resource operating in half-duplex (HD) is illustrated.

[0030] Fig.18 UE operation in time resources including HD time slots and FD (full duplex) time slots is illustrated.

[0031] Fig.19 Demonstrates execution Fig.16 The signaling process between the base station and the UE of the method described in the invention.

[0032] Fig. 20 The wireless devices to which the present specification can be applied are exemplified.

[0033] Fig.21 An example of a signal processing module structure is shown.

[0034] Fig. 22 Another example of the structure of the signal processing module in the transmission device is shown.

[0035] Fig.23 An example of a wireless communication device according to an implementation example of the present disclosure is shown.

[0036] Fig.24 An example of a processor 2000 is shown.

[0037] Fig.25 An example of a processor 3000 is shown.

[0038] Fig.26 Another example of a wireless device is shown.

[0039] Fig. 27Another example of a wireless device applied to the present specification is shown.

[0040] Fig.28 A mobile device to which this specification is applied is exemplified.

[0041] Fig.29 The communication system 1 applied to this specification is exemplified. DETAILED DESCRIPTION

[0042] 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, C".

[0043] 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".

[0044] 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".

[0045] In addition, in the present 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".

[0046] In addition, brackets used in this specification may mean "for example". Specifically, when 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 indicated as "control information (ie, PDCCH)", this may also mean that "PDCCH" is proposed as an example of "control information".

[0047] The technical features described separately in one drawing in this specification may be implemented separately or simultaneously.

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

[0049] The E-UTRAN includes a base station (BS) 20 that provides a control plane and a user plane to a user equipment (UE) 10. The UE 10 may be fixed or mobile, and may be referred to as 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 as another term, such as an evolved Node B (eNB), a base transceiver system (BTS), an access point, etc.

[0050] 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.

[0051] The EPC 30 includes an MME, an S-GW, and a packet data network gateway (P-GW). The MME has access information of the UE or capability information of the UE, which is generally used for mobility management of the UE. The S-GW is a gateway with the E-UTRAN as an endpoint. The P-GW is a gateway with the PDN as an endpoint.

[0052] The radio interface protocol layer between the UE and the network can be divided into the first layer (L1), the second layer (L2) and the third layer (L3) based on the lower three layers of the well-known open system interconnection (OSI) model in the communication system. Among them, the physical layer (PHY) belonging to the first layer provides an information transmission service using a physical channel, and the radio resource control layer (RRC) belonging to the third layer is used to control radio resources between the UE and the network. For this purpose, the RRC layer exchanges RRC messages between the UE and the BS.

[0053] Figure 2 is a block diagram illustrating a radio protocol architecture for a user plane. Figure 3 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.

[0054] Reference Figure 2 and Figure 3, the PHY layer provides information transfer services to the upper layer (=higher layer) through a physical channel. The PHY layer is connected to the medium access control (MAC) layer, which is a higher layer of the PHY layer, through a transport channel. Data is transferred between the MAC layer and the PHY layer through the transport channel. Transport channels are classified according to how data is transferred through a radio interface and the characteristics of the data.

[0055] Data moves between different PHY layers (ie, a PHY layer of a transmitter and a PHY layer of a receiver) 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.

[0056] The functions of the MAC layer include mapping between logical channels and transport channels and multiplexing and demultiplexing into transport blocks provided on 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.

[0057] The functions of the RLC layer include concatenation, segmentation, and reassembly of RLC SDUs. In order to ensure various types of quality of service (QoS) required by radio bearers (RBs), the RLC layer provides three types of operation modes: transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (AM). AM RLC provides error correction through automatic repeat request (ARQ).

[0058] The RRC layer is defined only on the control plane. The RRC layer is associated with the configuration, reconfiguration, and release of radio bearers, and is responsible for the control of logical channels, transport channels, and PHY channels. RB represents a logical route provided by the first layer (PHY layer) and the second layer (MAC layer, RLC layer, and PDCP layer) to transmit data between the UE and the network.

[0059] 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.

[0060] Configuration of RB means the process of defining the characteristics of the radio protocol layer and the channel in order to provide a specific service and configuring various detailed parameters and operation methods. RB can be divided into two types: signaling RB (SRB) and data RB (DRB). SRB is used as a channel through which RRC messages are sent on the control plane, and DRB is used as a channel through which user data is sent on the user plane.

[0061] 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.

[0062] The downlink transmission channels used to send data from the network to the UE include a broadcast channel (BCH) for sending system information and a downlink shared channel (SCH) for sending user traffic or control messages. Traffic or control messages for downlink multicast or broadcast services can be sent through the downlink SCH, or can be sent through another downlink multicast channel (MCH). In addition, the uplink transmission channels used to send data from the UE to the network include a random access channel (RACH) for sending initial control messages and an uplink shared channel (SCH) for sending user traffic or control messages.

[0063] Logical channels located above and mapped to the transport channels include a broadcast control channel (BCCH), a paging control channel (PCCH), a common control channel (CCCH), a multicast control channel (MCCH) and a multicast traffic channel (MTCH).

[0064] A physical channel includes multiple OFDM symbols in the time domain and multiple subcarriers in the frequency domain. A subframe includes multiple OFDM symbols in the time domain. RB is a resource allocation unit, including multiple OFDM symbols and multiple subcarriers. In addition, each subframe may use a specific subcarrier of a specific OFDM symbol (e.g., the first OFDM symbol) of the corresponding subframe for a physical downlink control channel (PDCCH), i.e., an L1 / L2 control channel. A transmission time interval (TTI) is a unit time for subframe transmission.

[0065] New radio access technology (New RAT, NR) will be described below.

[0066] 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 considering services / UEs that are sensitive to reliability / latency is under discussion. The introduction of next-generation radio access technologies that consider enhanced mobile broadband communications (eMBB), massive MTC (mMTC), and ultra-reliable low latency communications (URLLC) is under discussion. In the present disclosure, for convenience, this new technology may be referred to as a new radio access technology (new RAT or NR).

[0067] Figure 4 The system structure of the next generation radio access network (NG-RAN) to which NR is applied is illustrated.

[0068] Reference Figure 4, the NG-RAN may include gNBs and / or eNBs that provide user plane and control plane protocol terminations to the UE. Figure 4 The case where only gNB is included is illustrated. gNB (eNB) is connected through the Xn interface. The gNB and eNB are connected to the 5G core network (5GC) through the NG interface. More specifically, the gNB and eNB are connected to the access and mobility management function (AMF) through the NG-C interface, and are connected to the user plane function (UPF) through the NG-U interface.

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

[0070] Reference Figure 5 , gNB can provide functions such as inter-cell radio resource management (Inter Cell RRM), radio bearer management (RB control), connection mobility control, radio admission control, measurement configuration and provision, dynamic resource allocation, etc. AMF can provide functions such as NAS security and idle state mobility processing. UPF can provide functions such as mobility anchoring and PDU processing. SMF can provide functions such as UE IP address allocation and PDU session control.

[0071] Figure 6 An example of a frame structure that can be applied to NR is illustrated.

[0072] Reference Figure 6 In NR, a radio frame (hereinafter also referred to as a frame) can be used for uplink transmission and downlink transmission. The length of the frame is 10ms and can be defined as two 5ms half frames (HF). HF can be defined as five 1ms subframes (SF). SF can be divided into one or more time slots, and the number of time slots within an 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 symbol may include an OFDM symbol (or CP-OFDM symbol) and a single carrier-FDMA (SC-FDMA) symbol (or a discrete Fourier transform spread-OFDM (DFT-s-OFDM) symbol).

[0073] The following Table 1 illustrates subcarrier spacing configuration μ.

[0074] [Table 1]

[0075]

[0076] Table 2 below illustrates the number of time slots (N) in a frame according to the subcarrier spacing configuration μ. frame,μslot ), the number of time slots in a subframe (N subframe,μ slot ), the number of symbols in a time slot (N slot symb )wait.

[0077] [Table 2]

[0078]

[0079] exist Figure 6 In FIG. 1 , the cases where μ=0, 1, 2, and 3 are illustrated.

[0080] 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.

[0081] [Table 2-1]

[0082] <![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

[0083] In the NR system, OFDM (A) parameter sets (e.g., SCS, CP length, etc.) may be configured differently between multiple cells merged 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 merged cells.

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

[0085] A time slot may include multiple symbols in the time domain. For example, in the case of a normal CP, a time slot may include 14 symbols (or 7 symbols), but in the case of an extended CP, a time 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.

[0086] The physical downlink control channel (PDCCH) may include one or more control channel elements (CCEs) as illustrated in Table 3 below.

[0087] [Table 3]

[0088] Aggregation Level Number of CCEs 1 1 2 2 4 4 8 8 16 16

[0089] That is, the PDCCH may be transmitted through resources including 1, 2, 4, 8, or 16 CCEs. Here, the 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.

[0090] Monitoring implies decoding each PDCCH candidate according to the Downlink Control Information (DCI) format.The UE monitors the set of PDCCH candidates in one or more CORESETs (described below) on the active DL BWP of each activated serving cell configured with PDCCH monitoring according to the corresponding search space set.

[0091] A new unit called Control Resource Set (CORESET) may be introduced in NR. The UE may receive PDC CH in the CORESET.

[0092] Figure 8 CORESET is instantiated.

[0093] 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 the example, a CORESET may include multiple CCEs (or REGs).

[0094] The UE may attempt to detect a PDCCH in units of 1, 2, 4, 8, or 16 CCEs in a CORESET. One or more CCEs for which PDCCH detection may be attempted may be referred to as PDCCH candidates.

[0095] Multiple CORESETs can be configured for a UE.

[0096] The control region in the wireless communication system (e.g., LTE / LTE-A) of the related art is configured over the entire system frequency band for use by the base station (BS). All UEs except some UEs (e.g., eMTC / NB-IoT UEs) that only support narrowband must be able to receive wireless signals of the entire system frequency band of the BS in order to properly receive / decode control information sent by the BS.

[0097] On the other hand, in NR, the above-mentioned CORESET is introduced. CORESET is a radio resource for control information to be received by UE, and can use only a part of the system bandwidth instead of the entire system bandwidth. The BS can allocate a CORESET to each UE, and control information can be sent through the allocated CORESET. In NR, the UE can receive control information from the BS without having to receive the entire system frequency band.

[0098] 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.

[0099] 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. At this time, 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.

[0100] In NR, the following technologies / features can be applied.

[0101] <Self-contained subframe structure>

[0102] Fig. 9 An example of a frame structure for a new radio access technology is illustrated.

[0103] In NR, such as Fig. 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 the waiting time.

[0104] exist Fig. 9 In the figure, the shaded area represents the downlink control region, and the black part represents the uplink control region. The unmarked area can be used to transmit downlink data (DL data), or can be used to transmit uplink data (UL data). The characteristic of this structure is that downlink (DL) transmission and uplink (UL) transmission are performed sequentially within one subframe, DL data can be sent within the subframe, and UL ACK / NACK (acknowledgement / non-acknowledgement) can also be received. Therefore, the time required to resend data when an error occurs in data transmission is reduced, thereby minimizing the waiting time for the final data transmission.

[0105] In the subframe structure of data and control TDM, a time gap may be required for the base station and UE to switch from the transmission mode to the reception mode or from the reception mode to the transmission mode. To this end, some OFDM symbols when DL switches to UL can be set as a guard period (GP) in a self-contained subframe structure.

[0106] Fig.10 The structure of a self-contained time slot is illustrated.

[0107] In the NR system, a time slot contains a DL control channel, DL or UL data, a UL control channel, etc. For example, the first N symbols in the time slot (hereinafter, the DL control region) can be used to send the DL control channel, and the last M symbols in the time slot (hereinafter, the UL control region) can be used to send the UL control channel. N and M are both integers greater than or equal to 0. The resource region (hereinafter, the 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 time periods in chronological order.

[0108] 1. DL configuration only,

[0109] 2. UL configuration only,

[0110] 3. Hybrid UL-DL configuration,

[0111] -DL area + GP (guard period) + UL control area,

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

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

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

[0115] In the DL control region, the PDCCH may be transmitted, and in the DL data region, the physical downlink shared channel (PDSCH) may be transmitted. In the UL control region, the physical uplink control channel (PUCCH) may be transmitted, and in the UL data region, the physical uplink shared channel (PUSCH) may be transmitted. Downlink control information (DCI), such as DL data scheduling information or UL data scheduling information, etc., may be transmitted on the PDCCH. Uplink control information (UCI), such as ACK / NACK information for DL ​​data, channel state information (CSI) information, or scheduling request (SR), may be transmitted on the PUCCH. GP provides a time gap in the process of switching the gNB and UE from TX mode to RX mode or in the process of switching the gNB and UE from RX mode to TX mode. Some symbols within a subframe when switching from DL to UL may be configured as GP.

[0116] <Analog Beamforming #1>

[0117] The wavelength is shortened to millimeter waves (mmW), so a large number of antenna elements can be installed in the same area. That is, the wavelength is 1 cm at 30 GHz, so a total of 100 antenna elements can be installed in a 5×5 cm panel in a two-dimensional array at intervals of 0.5λ (wavelength). Therefore, a large number of antenna elements can be used in mmW to increase beamforming (BF) gain to increase coverage or improve throughput.

[0118] 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.

[0119] Hybrid beamforming (BF) with fewer than B TXRUs than Q antenna elements can be considered an intermediate form of digital BF and analog BF. In this case, the number of directions of beams that can be transmitted simultaneously is limited to B, although the number depends on the method of connecting the B TXRUs and the Q antenna elements.

[0120] <Analog Beamforming #2>

[0121] 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 ease of description, the hybrid beamforming structure can be represented by N TXRUs and M physical antennas. Then, the digital beamforming of the L data layers 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.

[0122] 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 being discussed 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.

[0123] In NR, in the time domain, a synchronization signal block (SSB, or also referred to as a synchronization signal and physical broadcast channel (SS / PBCH)) may consist of 4 OFDM symbols indexed in ascending order from 0 to 3 within the synchronization signal block, and a PBCH associated with a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a demodulation reference signal (DMRS) may be mapped to the symbols. As described above, a synchronization signal block may also be represented by a SS / PBCH block.

[0124] In NR, since multiple synchronization signal blocks (SSBs) can be transmitted at different times respectively and SSBs can be used to perform initial access (IA), serving cell measurement, etc., it is preferred to transmit SSBs first when the transmission time and resources of SSBs overlap with the transmission time and resources of other signals. For this purpose, the network can broadcast the transmission time and resource information of SSBs, or indicate them through UE-specific RRC signaling.

[0125] In NR, beams can be used for both transmission and reception. If the reception performance of the current serving beam degrades, a process of searching for a new beam through so-called beam failure recovery (BFR) can be performed.

[0126] Since the BFR process is not intended to declare an error or failure of the link between the network and the UE, it can be assumed that the connection with the current serving cell is maintained even if the BFR process is performed. During the BFR process, measurements of different beams configured by the network (which can be represented in terms of CSI-RS ports or synchronization signal block (SSB) indexes) can be performed, and the best beam for the corresponding UE can be selected. The UE can perform the BFR process in such a way that it performs RACH processing associated with the beam that produces good measurement results.

[0127] Now, a transmission configuration indicator (hereinafter, TCI) state will be described. The TCI state may be configured for each CORESET of a control channel, and a parameter for determining an RX beam of a UE may be determined based on the TCI state.

[0128] For each DL BWP of the serving cell, the UE may be configured for three or fewer CORESETs. In addition, the UE may receive the following information for each CORESET.

[0129] 1) a 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),

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

[0131] 3) the duration of the CORESET in the time domain (can be given in symbols),

[0132] 4) Resource block collection,

[0133] 5) CCE to REG mapping parameters,

[0134] 6) Antenna port quasi co-location, which indicates the quasi co-location (QCL) information of the DM-RS antenna ports for receiving PDCCH in each CORESET (from a set of antenna port quasi co-location provided by a higher layer parameter called "TCI-State"),

[0135] 7) An indication of the presence of a Transmission Configuration Indication (TCI) field for a specific DCI format transmitted by PDCCH in CORESET, etc.

[0136] QCL will be described. If the characteristics of the channel through which the symbols on one antenna port are transmitted can be inferred from the characteristics of the channel through which the 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 may experience the same / similar channel states. 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.

[0137] 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, 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, and the like.

[0138] 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).

[0139] [Table 4]

[0140] 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 Space Rx parameters

[0141] Each "TCI-State" may include parameters for configuring a QCL relationship between one or two downlink reference signals and a DM-RS port of a PDSCH (or PDDCH) or a CSI-RS port of a CSI-RS resource.

[0142] In addition, for each DL BWP configured for the UE in one serving cell, the UE may be provided with 10 (or less) search space sets.For each search space set, the UE may be provided with at least one of the following information.

[0143] 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 there is search space set s, 6) The number of PDCCH candidates for each CCE aggregation level, 7) Information indicating whether the search space set s is CSS or USS.

[0144] In NR, CORESET#0 may be configured via PBCH (or UE-specific signaling for handover or PSCell configuration or BWP configuration). Search Space (SS) Set #0 configured via PBCH may monitor offsets (e.g., slot offsets, symbol offsets) that are different for each associated SSB. This may be required to minimize the search space opportunities monitored by the UE. Alternatively, this may be required 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 best beam changes dynamically.

[0145] Fig.11 Physical channels and typical signal transmission are illustrated.

[0146] Reference Fig.11 In a wireless communication system, a UE receives information from a BS through a downlink (DL), and the UE transmits information to the BS through an uplink (UL). The information transmitted / received by the BS and the UE includes data and various control information, and there are various physical channels according to the type / purpose of the information transmitted / received by the BS and the UE.

[0147] A UE that is powered on again in a power-off state or newly enters a cell performs an initial cell search operation such as adjusting synchronization with the BS (S11). 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 acquire information such as a cell identity (ID). In addition, the UE may receive a physical broadcast channel (PBCH) from the BS to acquire broadcast information in the cell. In addition, the UE may receive a downlink reference signal (DL RS) in the initial cell search step to identify a downlink channel state.

[0148] (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.

[0149] 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 acquire more specific system information (S12).

[0150] Thereafter, the UE may perform a random access procedure to complete access to the BS (S13 to S16). Specifically, the UE may send 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 a PDSCH corresponding thereto (S14). Thereafter, the UE may send a physical uplink shared channel (PUSCH) by 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 the PDSCH corresponding thereto (S16).

[0151] After performing the above-mentioned process, the UE may 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 simultaneously, UCI may be transmitted through PUSCH. In addition, the UE may transmit UCI irregularly through PUSCH according to the request / instruction of the network.

[0152] 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 perform transmissions on the PUCCH, PRACH and UL-SCH.

[0153] For BA, the RX and TX bandwidths of the UE are not necessarily as wide as the bandwidth of the cell and can be adjusted. That is, the width can be commanded to change (e.g., reduced for low activity time periods for power saving), the position in the frequency domain can be moved (e.g., to increase scheduling flexibility), and the subcarrier spacing can be changed (e.g., to allow different services). A subset of the entire cell bandwidth of a cell is called a bandwidth part (BWP), and a BA is obtained by configuring a BWP for the UE and by notifying the UE of the current active BWP among the configured BWPs. When BA is configured, the UE only needs to monitor the PDCCH on one active BWP. That is, there is no need to monitor the PDCCH on the entire downlink frequency of the cell. The 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 the PDCCH decoding is successful, the timer is restarted, and when the timer expires, the timer switches to the default BWP.

[0154] The following describes an integrated access and backhaul link (IAB). Below, for ease of explanation, the proposed method is described based on a new RAT (NR) system, but the scope of the system to which the proposed method is applied can be extended to other systems such as 3GPP LTE / LTE-A systems in addition to the NR system.

[0155] One of the potential technologies aimed at realizing 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.

[0156] Compared to LTE, in NR, larger bandwidths are expected to be available with native deployment of massive MIMO or multi-beam systems (e.g., mmWave spectrum), thus creating opportunities for the development and deployment of integrated access and backhaul links. This makes it easier to build dense networks of self-backhauled NR cells defined as multiple control and data channels / processes that provide access to or to the UE in a more integrated manner. Such systems are referred to as integrated access and backhaul links (IAB).

[0157] The following definitions are made in this disclosure.

[0158] -AC(x): access link between node (x) and UE.

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

[0160] In this case, the node may refer to a donor gNB (DgNB) or a relay node (RN). Here, the DgNB or the donor node may be a gNB that provides a function of supporting a backhaul for an IAB node.

[0161] When there are relay node 1 and relay node 2, and relay node 1 is connected to relay node 2 via a return 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.

[0162] The technical features described separately in one of the drawings in this specification may be implemented separately or simultaneously.

[0163] 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 for illustration, so the technical features of this specification are not limited by the specific names used in the following figures.

[0164] Now, the full-duplex operation will be described.

[0165] In 5G, new types of services such as extended reality (XR), AI-based services, and self-driving cars 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. In 5G services, traffic will explode to support these various new use cases.

[0166] 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 direction. Therefore, in order to achieve low latency and efficient resource utilization in NR, the introduction of full-duplex operation within a single carrier is being discussed.

[0167] Fig.12 An example of how full duplex is applied within a carrier is shown.

[0168] Reference Fig.12 , full-duplex methods include Fig.12 The full-duplex in sub-band (hereinafter referred to as SB-FD) shown in (a) of FIG. 1 and the like can also be considered as in Fig.12 Spectrum sharing full-duplex (hereinafter, SS-FD) shown in (b).

[0169] In the case of SB-FD, DL and UL are transmitted and received through 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.

[0170] In the case of SS-FD, DL and UL are transmitted and received through 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.

[0171] This full-duplex (FD) operation can also be used in combination with the existing half-duplex (HD) operation. For example, in the time resources used for the existing half-duplex-based TDD operation, some time resources can be used for full-duplex operation. SB-FD or SS-FD operation can be performed on the time resources performing full-duplex operation.

[0172] Fig.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, SB-FD or SS-FD) coexist.

[0173] exist Fig.13 In (a), some time resources operating as SB-FD (=SBFD) are indicated as SBFD, and some time resources operating as HD are indicated as HD. Fig.13 In (b), some time resources operating as SS-FD (=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.

[0174] In the time resources operated as SB-FD, some frequency resources are used as DL resources, while other frequency resources are used as UL resources. Between the DL frequency resources and the UL frequency resources, there may be a guard subband that is not used for both DL and UL and is empty. The guard subband may also be referred to as other terms, such as guard frequency resources or guard subcarriers.

[0175] In the time resources using SS-FD operation, the entire frequency resource can be used for both DL and UL. Alternatively, in order to reduce the impact of interference from other adjacent carriers (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. That is, one or both ends of the carrier may be used as an unused guard band (guard subband) for both DL and UL. Alternatively, in order to reduce ACI on UL reception, one or both ends of the carrier may be used only for DL ​​transmission.

[0176] In the present disclosure, a time slot resource operating as HD is referred to as an HD time slot, a time slot resource operating as SB-FD is referred to as an SB-FD time slot, and a time slot resource operating as SS-FD is referred to as an SS-FD time slot. SS-FD time slots and SS-FD time slots are also collectively referred to as FD time slots.

[0177] In the present disclosure, among time resources operating in FD, among all frequency resources, for convenience, frequency resources operating in DL are referred to as DL subbands, and frequency resources operating in UL are also referred to as UL subbands.

[0178] In the case of full-duplex operation, both the base station and the UE can perform full-duplex operation. That is, both the base station and the UE can simultaneously perform DL and UL transmission and reception using the same or different frequency resources in the same time resource.

[0179] Alternatively, only the base station can perform full-duplex operation, while the UE can perform half-duplex operation. The base station can perform DL and UL transmission and reception simultaneously using the same or different frequency resources in the same time resource, but the UE only performs DL reception or UL transmission in a specific time resource. In this case, the base station performs full-duplex operation by performing DL transmission and UL reception with different UEs at the same time.

[0180] The content of the present disclosure is described under the assumption that the base station performs / supports full-duplex operation, but the UE performs / supports half-duplex operation. However, the content of the present disclosure can also be applied even if both the base station and the UE perform / support full-duplex operation.

[0181] Based on the above discussion, the present disclosure proposes a method for setting downlink (DL) resources and uplink (UL) resources for intra-carrier full-duplex operation.

[0182] In the following, the term network may be interpreted as gNB or CU / DU. In addition, the term UE may be interpreted as being replaced by MT of IAB node.

[0183] A. Characteristics of DL / UL time / frequency resources for SB-FD and SS-FD operations

[0184] In the present disclosure, it is assumed that a cell (base station) can perform DL transmission and UL reception in the same time resource in an FD scheme (e.g., SB-FD or SS-FD). For example, the base station can perform an HD operation in a first time resource and perform an FD operation in a second time resource (which can be a time resource other than the first time resource).

[0185] The first time resource for performing HD operation performs DL operation or UL operation across frequency resources including the entire system bandwidth. Within the first time resource for performing HD operation, the network performs DL operation through 1-1 time resource and performs UL operation through 1-2 time resource. At this time, 1-1 time resource and 1-2 time resource do not overlap with each other.

[0186] 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) in the frequency resources constituting the system frequency band of the cell, and performs UL operation through all or part of the frequency resources (second frequency resources).

[0187] Fig.14 Examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource are shown.

[0188] Reference Fig.14 (a), in the first time resource (indicated by A), it operates as HD. In the second time resource (indicated by B), for example, it can operate as SB-FD. In the first time resource, the resource indicated by DL corresponds to the above-mentioned 1-1 time resource, and the resource indicated by UL corresponds to the above-mentioned 1-2 time resource.

[0189] Reference Fig.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.

[0190] Fig.15 Another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource is shown.

[0191] Reference Fig.15 (a), in the first time resource (labeled as A), the device operates as half-duplex. In the second time resource (labeled as B), the device can, for example, operate as SSFD. In the first time resource, the resource labeled as DL corresponds to the above-mentioned first time resource, and the resource labeled as UL corresponds to the above-mentioned second time resource.

[0192] Reference Fig.15(b), in the second time resource, the frequency resource for DL ​​and DL+UL operation corresponds to the above-mentioned first frequency resource, and the frequency resource for DL+UL operation corresponds to the above-mentioned second frequency resource.

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

[0194] 1) When performing SB-FD operation, the first frequency resource and the second frequency resource do not overlap each other. This is to ensure that DL and UL operations are performed through different frequency resources. At this time, there may be frequency resources that do not correspond to both the first frequency resource and the second frequency resource, and these frequency resources are called protection subbands or protection frequency resources. These protection frequency resources may be required to reduce the interference of DL transmission to UL reception. The protection frequency resource can be located between the first frequency resource and the second frequency resource.

[0195] 2) When performing SS-FD operation, the first frequency resource and the second frequency resource may overlap. At this time, there may be frequency resources that do not correspond to both the first frequency resource and the second frequency resource, and these frequency resources are referred to as guard subbands or guard frequency resources. These guard frequency resources may be required to reduce interference of DL transmission on adjacent carriers to UL reception, and / or reduce interference of DL transmission on adjacent carriers to UL reception.

[0196] 3) When performing SB-FD operation, the second frequency resource may consist of continuous frequency resources, and the first frequency resource may consist of non-continuous frequency resources. At this time, the first frequency resource may consist of multiple groups (for example, two groups) 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 consist of continuous frequency resources, and the second frequency resource may consist of non-continuous frequency resources. At this time, the second frequency resource may consist of multiple groups (for example, two groups) 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.

[0197] 4) When performing SS-FD operation, the second frequency resource may be composed 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) on one or both sides than the first frequency resource. This is to reduce interference of DL transmission on adjacent carriers to UL reception.

[0198] The network determines the "first time resource" and the "second time resource" as well as the "first frequency resource" and the "second frequency resource" as described above, and provides some or part of the corresponding information to the UE. The network performs DL transmission to the UE in the "1-1 time resource in the first time" and the "first frequency resource in the second time resource", and performs UL reception from the UE in the "1-2 time resource in the first time resource" and the "second frequency resource in the second time resource".

[0199] The UE may receive some or part of the information about the "first time resource" and the "second time resource" and the "first frequency resource" and the "second frequency resource" from the network, and determine the location of the resources. The UE performs DL reception from the network through all or part of the "1-1 time resource within the first time" and the "first frequency resource within the second time resource", and performs UL transmission to the network through the "1-2 time resource within the first time resource" and the "second frequency resource within the second time resource".

[0200] For FD (SBFD and / or SSFD) operation of a cell, the UE may determine information about time resources (hereinafter referred to as SBFD symbols) for SBFD operation. To this end, information about SBFD symbols may be set from the network to the UE.

[0201] When a specific time resource is set as a time resource (SBFD symbol) operating in SBFD, both DL resources and UL resources may exist in the time resource. In this case, if there is no UL signal to be received by the base station in the time resource, the base station may perform only DL transmission. In the SBFD resource, DL transmission is only in the DL subband. Therefore, even if there is no UL signal transmitted in the UL subband, only DL transmission may be performed in the DL subband.

[0202] In this case, if the base station has no UL transmission to receive, even if the specific time resource is a resource determined as a SBFD symbol, it may consider performing DL transmission outside the DL subband as well as in the DL subband to improve DL throughput. That is, it may consider performing DL transmission in the full frequency band.

[0203] 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.

[0204] 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 is possible to perform only DL operation or UL operation by using all frequency resources of a cell.

[0205] In an existing NR TDD carrier, the base station performs only one operation, downlink or uplink, in a specific time resource. In this case, in the time resource where the SSB is transmitted, the base station always operates in the downlink.

[0206] For a UE operating in existing TDD, the following assumptions exist for the symbols in which the SSB is transmitted.

[0207] 1) The SS / PBCH transmission symbols cannot be configured for uplink through TDD configurations (e.g., TDD-UL-DL-ConfigCommon and / or TDD-UL-DL-ConfigDedicated).

[0208] 2) The SS / PBCH transmission symbols cannot be set to uplink through the SFI (Slot Format Indication) of DCI format 2_0.

[0209] 3) When the SS / PBCH is transmitted in a symbol configured as flexible through TDD configurations (e.g., TDD-UL-DL-ConfigCommon and / or TDD-UL-DL-ConfigDedicated), if the uplink transmission of the UE overlaps with the SS / PBCH symbol, the uplink transmission is not performed (the uplink transmission is skipped). In the case of SRS, if the flexible symbol overlaps with the SS / PBCH symbol, the SRS transmission is not performed in the overlapping symbols.

[0210] In addition, in FDR environments such as SB-FD and SS-FD, from the cell perspective, both DL resources and UL resources can exist in the same time resource. Therefore, the base station can perform uplink reception while transmitting the downlink.

[0211] Therefore, even when the SS / PBCH is transmitted in the time resource where the cell performs FDR operations, the base station can perform uplink reception while transmitting the SS / PBCH.

[0212] In addition, according to the current standard specifications, the UE cannot perform uplink transmission on the symbol resources where the SS / PBCH is transmitted. In this case, the FDR operation cannot be performed on the SS / PBCH transmission time resource.

[0213] <PDSCH / PUSCH / PUCCH Repetition>

[0214] According to the existing NR standard specifications, transmission support for PDSCH, PUSCH, and PUCCH is repeated. The repetition operations of PDSCH, PUSCH, and PUCCH are as follows.

[0215] 1) PDSCH

[0216] When PDSCH is repeatedly transmitted K times, PDSCH is repeatedly transmitted through K consecutive time slots from the time slot in which PDSCH is instructed to be transmitted. The symbol resource through which PDSCH is transmitted within the time slot is determined by the TDRA field of PDSCH, and the same symbol resource is used for K time slots. If at least one symbol among the symbols allocated for transmission of PDSCH in a specific time slot constituting PDSCH transmission cannot be used for PDSCH transmission, the transmission of PDSCH in the time slot is discarded / omitted.

[0217] 2) PUSCH

[0218] There are two types of PUSCH repetition: PUSCH repetition type A and PUSCH repetition type B.

[0219] a. PUSCH repetition type A

[0220] For PUSCH repetition type A, the repetition operation varies depending on the value of a parameter (eg, "AvailableSlotCounting") set by a higher layer signal.

[0221] When PDSCH is repeatedly transmitted K times, if "AvailableSlotCounting" is "Enabled", PUSCH is repeatedly transmitted through K available time slots from the time slot in which PUSCH is instructed to be transmitted. At this time, the following time slots are excluded from the available time slots.

[0222] If at least one symbol among symbols allocated for PUSCH transmission overlaps with a symbol indicated as a downlink symbol by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated.

[0223] If at least one symbol among the symbols allocated for PUSCH transmission overlaps with a symbol of an SSB having an index provided by ssb-PositionsInBurst.

[0224] If "AvailableSlotCounting" is not "enabled" or does not exist, PUSCH is repeatedly transmitted over K consecutive time slots from the time slot at which PUSCH is instructed to be transmitted.

[0225] The symbol resources through which the PUSCH is transmitted within the K time slots constituting the PUSCH transmission are determined by the TDRA field of the PUSCH, and the same symbol resources are used for the K time slots. If at least one symbol among the symbols allocated for PUSCH transmission in a specific time slot constituting the PUSCH transmission cannot be used for PUSCH transmission, the transmission of the PUSCH in the time slot is discarded / omitted.

[0226] b. PUSCH repetition type B

[0227] For PUSCH repetition type B, when the number of symbols allocated for PUSCH transmission by the TDRA table is S and the number of PUSCH repetitions is K, K nominal repetitions are configured using S*K consecutive symbol resources starting from the first symbol in the time slot in which PUSCH is instructed to be transmitted. At this time, each nominal repetition consists of S symbols.

[0228] Each nominal repetition is composed of one or more actual repetitions. Each actual repetition is composed of two or more consecutive symbols. Here, invalid symbols are excluded from the symbol resources constituting the actual repetition. After excluding invalid symbols from the symbol resources constituting the nominal repetition, the consecutive symbol resources constitute an actual repetition. At this time, the actual repetition is composed of symbols in the same time slot. If the consecutive symbol resources include a time slot boundary, different actual repetitions are composed based on the time slot boundary.

[0229] At this time, invalid symbols include:

[0230] i) Downlink symbols configured by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated,

[0231] ii) an invalid symbol indicated by the Invalid Symbol Pattern Indicator field in the UL Grant,

[0232] iii) SS / PBCH symbols,

[0233] iv) the symbol for the CORESET of the Type0-PDCCH CSS set indicated by pdcch-ConfigSIB1 in the MIB,

[0234] v) Invalid symbols for DL-UL switching configured by RRC.

[0235] For an actual repetition constituting a PUSCH transmission, if at least one symbol within the actual repetition cannot be used for PUSCH transmission, the PUSCH transmission in the actual repetition is discarded / omitted.

[0236] 3) PUCCH

[0237] When the PUCCH is repeatedly transmitted K times, the PUCCH is repeatedly transmitted through K available time slots starting from the time slot in which the PUCCH is instructed to be transmitted. At this time, the following time slots are excluded from the available time slots.

[0238] i) if at least one symbol among the symbols allocated for PUCCH transmission overlaps with a symbol indicated as a downlink symbol by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated,

[0239] ii) If at least one symbol among the symbols allocated for PUCCH transmission overlaps with a symbol of an SSB having an index provided by ssb-PositionsInBurst.

[0240] For K slots constituting PUCCH transmission, the same symbol resources are used for PUCCH transmission. If at least one symbol among the symbols allocated for PUCCH transmission cannot be used for PUCCH transmission in a specific slot constituting PUCCH transmission, PUCCH transmission in the slot is dropped / omitted.

[0241] In an SBFD environment, when a UE repeatedly transmits PDSCH / PUSCH / PUCCH, etc., a method of determining time slot resources constituting repeated transmission needs to be different from a method in an existing TDD environment.

[0242] Next, a method for determining repetitive time slot resources constituting PDSCH / PUSCH / PUCCH transmission in intra-carrier full-duplex operation is described.

[0243] The present disclosure assumes SB-FD operation, where a cell uses different frequency resources (eg, subbands) in the same time resource to simultaneously perform DL operation and UL operation. However, the present disclosure may also be applied to a case where a cell performs SS-FD operation.

[0244] The present disclosure includes the following UE operations.

[0245] When the UE performs DL reception in SBFD symbols,

[0246] i) The UE may perform DL reception using frequency resources within a DL subband. The UE may perform DL reception using frequency resources within a DL subband within a DL BWP.

[0247] ii) The UE does not perform DL reception in frequency resources other than the DL subband. The UE does not perform DL reception using frequency resources other than the DL subband within the DL BWP.

[0248] When the UE performs UL transmission in SFBD symbols,

[0249] i) The UE may perform UL transmission using frequency resources within the UL subband. The UE may perform UL transmission using frequency resources within the UL subband within the UL BWP.

[0250] ii) The UE does not perform UL transmission in frequency resources other than the UL subband. The UE does not perform UL transmission using frequency resources other than the UL subband within the UL BWP.

[0251] In general, in time resources in which a cell is determined to operate in SBFD, a UE may perform DL reception within a DL subband and perform UL transmission within a UL subband.

[0252] However, in the time resources in which the cell has determined that it operates in SBFD, the base station may consider performing only DL transmission or UL reception, or perform DL transmission or UL reception over the entire frequency band as needed (capable of receiving DL or UL scheduling).

[0253] <Considering the duplication of SS / PBCH symbol resources>

[0254] According to the existing standard specifications, for PUSCH repetition type A and PUCCH transmission, if the symbol for transmitting PUSCH / PUCCH in a specific time slot overlaps with the symbol for transmitting SS / PBCH, PUSCH / PUCCH is not transmitted in the time slot. When PUSCH / PUCH is transmitted with K repetitions, if "AvailableSlotCounting" is "enabled" in PUSCH repetition type A, the time slot is excluded from the K available time slots constituting PUSCH transmission; if "AvailableSlotCounting" is not "enabled", the time slot is included in the K available time slots constituting PUSCH transmission, but PUSCH transmission is discarded / omitted in the time slot. For PUCH, the time slot is excluded from the K available time slots constituting PUSCH transmission.

[0255] If the cell is in SBFD operation, the base station can perform both downlink transmission and uplink reception in the same time resource. Therefore, the base station can simultaneously perform uplink reception on the symbol resource where the SS / PBCH is transmitted. In this case, unlike in the past, the UE may be able to perform uplink transmission of PUSCH, PUCCH, etc. on the symbol where the SS / PBCH is transmitted (by the base station). That is, even if the symbol where the PUSCH / PUCCH is transmitted overlaps with the symbol where the SS / PBCH is transmitted (by the base station), the UE may be able to transmit PUSCH / PUCCH, unlike in the past when it was not always able to perform uplink transmission on the symbol where the SS / PBCH was transmitted.

[0256] In view of this, the present disclosure proposes that even if symbol resources for transmitting PUSCH / PUCCH overlap with symbol resources for transmitting SS / PBCH in a specific time slot, PUSCH / PUCCH repetition may be performed in the time slot.

[0257] a) PUSCH repetition type A / PUCCH

[0258] In PUSCH repetition type A, when "AvailableSlotCounting" is "enabled", when PUSCH is repeatedly transmitted K times, if the PUSCH transmission symbol overlaps with the SS / PBCH transmission symbol in a specific time slot, the time slot is excluded from the K available time slots constituting PUSCH transmission. However, when the cell performs SBFD transmission, even if the PUSCH transmission symbol overlaps with the SS / PBCH transmission symbol in a specific time slot, the time slot can be included in the available time slots constituting PUSCH transmission, as in Option 1 and Option 2 below.

[0259] Option 1. Even if a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific time slot, the time slot is not excluded from available time slots constituting PUSCH transmission.

[0260] At this time, if a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific available time slot and the UE determines that it does not perform PUSCH transmission (for receiving SS / PBCH), it omits / discards PUSCH transmission in the corresponding time slot.

[0261] Option 2. If a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific time slot, and the UE determines that it performs PUSCH transmission (but does not receive SS / PBCH) in the time slot, then the time slot is not excluded from the available time slots constituting PUSCH transmission. Otherwise, the UE excludes the time slot from the available time slots constituting PUSCH transmission.

[0262] Typically, the above proposal may only apply to time resources where the cell operates in SBFD. In this case, the existing standard specification (i.e., if a PUSCH transmission symbol overlaps with a SS / PBCH transmission symbol in a specific time slot, then the time slot is excluded from the available time slots) applies to time resources where the cell operates in HD (half-duplex).

[0263] Alternatively, the above may only apply to time resources set as flexible by the TDD configuration. In this case, the time resources set as downlink by the TDD configuration are subject to existing standard specifications (i.e., if a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific time slot, the time slot is excluded from the available time slots). At this time, the TDD configuration may mean "tdd-UL-DL-ConfigurationCommon". Alternatively, the TDD configuration may mean "tdd-UL-DL-ConfigurationCommon" and / or "tdd-UL-DL-ConfigurationDedicated" (if set).

[0264] The above content can also be applied to PUCCH transmission.

[0265] In PUSCH repetition type A, if "AvailableSlotCounting" is not "enabled" and the UE determines that it does not perform PUSCH transmission (for receiving SS / PBCH) because the PUSCH transmission symbols overlap with the SS / PBCH transmission symbols in a specific available time slot, the PUSCH transmission in that time slot is omitted / discarded.

[0266] b) PUSCH repetition type B

[0267] For PUSCH repetition type B, SS / PBCH transmission symbols are included in the null symbols and are excluded from the symbol resources constituting the actual repetition. However, when a cell performs SBFD transmission, it may not include SS / PBCH transmission symbols in the null symbols, as shown below.

[0268] Option 1: Do not include SS / PBCH transmission symbols in invalid symbols.

[0269] At this time, if a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific actual repetition and the UE determines that it does not perform PUSCH transmission (for receiving SS / PBCH), the corresponding actual repetition is omitted / discarded.

[0270] Option 2. If the PUSCH transmission symbol overlaps with the SS / PBCH transmission symbol in a specific time resource, and the UE determines that it performs PUSCH transmission (but does not receive SS / PBCH), the SS / PBCH transmission symbol in the corresponding time resource is not included in the invalid symbol. Otherwise, the UE includes the SS / PBCH transmission symbol in the corresponding time resource as an invalid symbol.

[0271] Typically, the above proposal may only apply to time resources in which the cell in SBFD operates. In this case, the existing standard specification (i.e., if a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific time slot, then exclude the time slot from the available time slots) applies to the time resources in which the cell operates in half-duplex mode.

[0272] Alternatively, the above may only apply to time resources set as flexible by the TDD configuration. In this case, the time resources set as downlink by the TDD configuration are subject to existing standard specifications (i.e., if a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific time slot, the time slot is excluded from the available time slots). In this case, the TDD configuration may mean "tdd-UL-DL-ConfigurationCommon". Alternatively, the TDD configuration may mean "tdd-UL-DL-ConfigurationCommon" and / or "tdd-UL-DL-ConfigurationDedicated" (if set).

[0273] <Considering the duplication of DL / UL subband resources>

[0274] In the case of existing PDSCH / PUCSH / PUCCH repetition, the same frequency domain resource allocation information is applied and transmitted in the resources where PDSCH / PUSCH / PUCCH is repeatedly transmitted. That is, repetition is performed by applying the same PRB size. When inter-slot frequency hopping is not applied, transmission is performed by the same PRB position for each slot, and when inter-slot frequency hopping is applied, transmission is performed by applying different PRB positions for each slot according to the set mode.

[0275] When the cell operates in SBFD, DL subbands and UL subbands may exist in specific time resources. In this case, depending on the configuration, within the UL BWP in which the UE operates, there may be frequency resources (e.g., DL subbands, guard subbands) that are not used by the cell for UL operation. In this case, all or part of the frequency resources allocated for PUSCH / PUCCH transmission in a specific time slot may overlap with frequency resources that are not used for UL operation.

[0276] Similarly, within the DL BWP of UE operation, there may be frequency resources (e.g., UL subband, guard subband) that are not used by the cell for DL ​​operation. In this case, all or some of the frequency resources allocated for PDSCH transmission in a specific time slot may overlap with frequency resources not used for DL ​​operation.

[0277] Taking these circumstances into consideration, the present disclosure may perform repetition of PDSCH / PUSCH / PUCCH as follows.

[0278] a)PDSCH

[0279] When PDSCH is repeatedly transmitted K times starting from slot #n, PDSCH is transmitted using K consecutive slots starting from slot #n. At this time, if all or part of the PRB resources allocated for transmitting PDSCH in a specific slot in which PDSCH is transmitted cannot be used for DL ​​operation, the following operation may be performed.

[0280] Option 1. The UE determines not to perform PDSCH transmission in the corresponding time slot.

[0281] Option 2. Transmitting PDSCH after rate matching PDSCH in PRB resources that cannot be used for DL ​​operation in the corresponding slot. The UE assumes that the base station transmits PDSCH by rate matching PDSCH in PRB resources that cannot be used for DL ​​operation in the corresponding slot.

[0282] That is, the UE determines that among the PRB resources allocated for sending the PDSCH, the remaining PRB resources except the PRB resources that cannot be used for DL ​​operation are the PRB resources allocated for sending the actual PDSCH in the corresponding time slot. The PDSCH is sent by performing rate matching and RE mapping of the PDSCH TB (transport block) according to the number of RBs that can actually send the PDSCH.

[0283] Option 3. Transmitting PDSCH by puncturing PDSCH in PRB resources that cannot be used for DL ​​operation in a corresponding slot. It is assumed that a UE transmits PDSCH by puncturing PDSCH in PRB resources that cannot be used for DL ​​operation in a corresponding slot.

[0284] That is, PDSCH is transmitted by performing rate matching of PDSCH TB (Transport Block) based on PRB resources allocated for PDSCH transmission, performing RE mapping, and then puncturing PDSCH transmission in PRB resources that cannot be used for DL ​​operation. That is, transmission is performed with zero power.

[0285] At this time, the PRB resources that cannot be used for DL ​​operation may mean “PRB resources not included in the DL subband” or “PRB resources included in the UL subband and / or the guard band”.

[0286] Although the above is described / proposed for PDSCH, it may also be applied to other signal / channel transmission / reception such as PUSCH and PUCCH.

[0287] b) PUSCH repetition type A / PUCCH

[0288] If "AvailableSlotCounting" is not "enabled" in PUSCH repetition type A, when PUSCH is repeatedly transmitted K times from slot #n, K consecutive slots from slot #n are used to transmit PUSCH. That is, when K PUSCH repetitions are performed, if the counting method based on available slots is not applied to determine the K slots for transmitting PUSCH, K consecutive slots are used to transmit PUSCH. At this time, if all or part of the PRB resources allocated for transmitting PUSCH in a specific slot for transmitting PUSCH cannot be used for UL operation, the following operation may be performed.

[0289] Option 1: The UE determines not to transmit the PUSCH in the corresponding time slot.

[0290] Option 2. The UE transmits the PUSCH by performing rate matching on the PUSCH in the PRB resources that cannot be used for UL operation in the corresponding time slot. That is, among the PRB resources allocated for transmitting the PUSCH, the remaining PRB resources except the PRB resources that cannot be used for UL operation are determined as the PRB resources allocated for transmitting the actual PUSCH in the corresponding time slot, and the rate matching of the PUSCH TB (transport block) is performed according to the number of RBs that can transmit the actual PUSCH, and RE mapping is performed for transmission.

[0291] Option 3. The UE punctures the PUSCH in the PRB resources that cannot be used for UL operation in the corresponding time slot and transmits the PUSCH. That is, rate matching of the PUSCH TB (transport block) is performed based on the PRB resources allocated for PUSCH transmission, RE mapping is performed, and puncturing is performed for PUSCH transmission in the PRB resources that cannot be used for UL operation. In other words, transmission is performed at zero power.

[0292] At this time, the PRB resources that cannot be used for UL operation may mean “PRB resources not included in the UL subband” or “PRB resources included in the DL subband and / or the guard band”.

[0293] <Operation of determining available time slots based on whether UL operation is possible in PRB resources allocated for PUSCH transmission>

[0294] In the case where "AvailableSlotCounting" is "enabled" in PUSCH repetition type A, when PUSCH is repeatedly transmitted K times starting from time slot #n, K available time slots starting from time slot #n are used to transmit PUSCH. That is, when performing K PUSCH repetitions, if the counting method based on available time slots is adopted to determine the K time slots for transmitting PUSCH, K available time slots starting from time slot #n are used to transmit PUSCH.

[0295] At this time, considering the case where all or part of the PRB resources allocated for PUSCH transmission cannot be used for UL operation, available time slots constituting PUSCH transmission may be determined as follows.

[0296] Option a. Whether the frequency resources allocated for PUSCH transmission in a specific time slot overlap with the PRB resources that cannot be used for UL operation does not affect the determination of the available time slot for PUSCH transmission. That is, even if the frequency resources allocated for PUSCH transmission overlap with the PRB resources that cannot be used for UL operation, the time slot can be determined as an available time slot.

[0297] Option b. For a symbol in a specific time slot where PUSCH transmission is to be performed, if all or part of the frequency resources allocated for PUSCH transmission in at least one symbol overlap with PRB resources that cannot be used for UL operation, the time slot is not included in the available time slots that can be used for PUSCH transmission. That is, PUSCH transmission is not performed in the time slot, and it is not included in the K time slots constituting PUSCH repetition.

[0298] At this time, it is important that the determination of the available time slots of the UE and the determination of the available time slots of the base station are determined in the same manner without any misunderstanding. In view of this, it is possible to determine the available time slots based on the DL / UL sub-bands set / determined according to the semi-static high-layer signaling of the base station. That is, if the existence and / or position of the DL / UL sub-bands are set / determined based on dynamic signaling, this information cannot be used to determine the available time slots.

[0299] In order to determine the available time slot as described above, it is necessary to determine whether there is a PRB resource that cannot be used for UL operation in a specific time slot. If a specific symbol is determined as a symbol for performing SBFD operation, the UE may determine that there is a PRB resource that cannot be used for UL operation in the symbol.

[0300] Typically, this determination can only be performed through semi-static configuration. Whether SBFD operates on a particular symbol can be determined semi-statically and / or dynamically. For example, a particular symbol can be statically set for SBFD operation, and then whether SBFD operation is actually performed on the symbol can be dynamically changed.

[0301] In this case, the UE can determine whether to perform SBFD operation on the corresponding symbol based on only semi-static configuration information. For example, if a specific symbol is set to operate semi-statically with SBFD, and the PRB resources that cannot be used for UL operation in the symbol overlap with the PRB allocated for PUSCH transmission, the UE does not determine the time slot containing the symbol as an available time slot.

[0302] Fig.16 An example of an operation method of a UE in a wireless communication system is illustrated.

[0303] Reference Fig.16 , the UE determines an available time slot among the multiple time slots. Here, when a specific time slot among the multiple time slots is a sub-band full-duplex (SB-FD) time slot including both uplink sub-band resources and non-uplink sub-band resources in the frequency domain, and the non-uplink sub-band resources of the specific time slot overlap with the uplink resources for uplink transmission, the specific time slot is excluded from the count of available time slots (S161).

[0304] The plurality of time slots may include: i) an SB-FD time slot and ii) a half-duplex (HD) time slot including an uplink sub-band or a downlink sub-band.

[0305] The non-uplink subband resources may be at least one of a physical resource block (PRB), a downlink subband, or a guard band not included in an uplink subband.

[0306] A specific time slot may include multiple symbols in the time domain. For example, it may include 14 symbols in the normal CP and 12 symbols in the extended CP.

[0307] In at least one symbol among the plurality of symbols, when non-uplink subband resources overlap with uplink resources for uplink transmission, the specific time slot may be excluded from the count of available time slots.

[0308] The uplink subband resources and the non-uplink subband resources may be determined based on a configuration message, which is a high-layer signal. This means that when determining the existence, number, etc. of available symbols, it may be necessary to determine, for example, whether a specific time slot / symbol is a time slot / symbol that supports SBFD (i.e., allows SBFD operation), and the determination is not based on dynamic signaling such as DCI, but based on high-layer signaling such as RRC signaling.

[0309] That is, the configuration message semi-statically configures uplink subband resources and non-uplink subband resources. The SF-FD time slot may be a time slot in which the UE determines that the cell operates in SBFD through higher layer signaling such as the configuration message.

[0310] That is, when determining whether a specific time slot is an SB-FD time slot, the SB-FD time slot may be limited to the SB-FD time slot indicated by the semi-static configuration information among the dynamic configuration information (e.g., DCI) and the semi-static configuration information (e.g., RRC message). That is, when determining / counting the available time slots, the SB-FD time slot indicated by the dynamic configuration information may not be considered.

[0311] In some embodiments, the UE may receive a high-layer signal including a field notifying ( / indicating) whether PUSCH repetition based on available slot count is enabled. The high-layer signal may be, for example, a PUSCH configuration message (PUSCH-Config) for configuring UE-specific PUSCH parameters applicable to a specific BWP.

[0312] The following table is an example of high-level signals.

[0313] [Table 5]

[0314]

[0315]

[0316] In the above table, "availableSlotCounting" indicates whether PUSCH repetition based on available slot counting is enabled. If this field is not present, PUSCH repetition based on available slot counting is disabled.

[0317] The higher layer signal (PUSCH configuration message) including the above fields may also include resource allocation information for semi-statically configuring uplink sub-band resources and non-uplink sub-band resources.

[0318] That is, the higher layer signal including the above fields and the configuration message for semi-statically setting uplink subband resources and non-uplink subband resources may be the same higher layer message.

[0319] Alternatively, the higher layer signal including the above fields and the configuration message for semi-statically configuring the uplink subband resources and the non-uplink subband resources may be independent higher layer messages.

[0320] In an embodiment, when PUSCH repetition based on available time slot count is not activated (enabled), if the non-uplink subband resources of any one of the multiple time slots overlap with the uplink resources used for uplink transmission, PUSCH transmission is not performed (or determined not to be performed) in the time slot.

[0321] In an HD slot, if a PUSCH transmission symbol for uplink transmission overlaps an SSB transmission symbol for SS / PBCH (synchronization signal / physical broadcast channel) transmission in the time domain, the HD slot is excluded from the count of available slots.

[0322] The UE repeatedly performs uplink transmission in the available time slot (S162).

[0323] However, if non-uplink subband resources of a specific available time slot among the available time slots overlap with uplink resources used for uplink transmission, PUSCH transmission is not performed (or determined not to be performed) in the specific available time slot.

[0324] Fig.17 UE operation according to the existing standard specification in a time resource operating in half-duplex (HD) is illustrated.

[0325] Reference Fig.17 , if a specific time slot is an HD time slot and a PUSCH transmission symbol overlaps with a SS / PBCH (SSB) transmission symbol in the specific time slot, the UE excludes the time slot from available time slots (available time slot count) for PUSCH repetition transmission.

[0326] Fig.18 UE operation in time resources including HD time slots and FD (full duplex) time slots is illustrated.

[0327] Reference Fig.18 , HD time slots can be Fig.17 Operate as described in .

[0328] In order to determine the available time slots among the FD time slots (or count the available time slots), in FD time slot #1, there is some overlap between PUSCH and SSB transmission symbols in the time domain, but in the frequency domain, the PUSCH transmission resources are included in the semi-static UL resources (uplink subband resources) and do not overlap with non-uplink subband resources (e.g., semi-static downlink subband resources, SSB transmission resources where the base station transmits SSB, guard bands, etc.). Therefore, the UE determines FD time slot #1 as an available time slot for repeated PUSCH transmission (counts the available time slots).

[0329] FD slot #2 is included in the UL resources (uplink subband resources) in which the PUSCH transmission resources are semi-statically configured, and does not overlap with non-uplink subband resources (e.g., semi-statically configured downlink subband resources, SSB transmission resources in which the base station transmits SSB, guard bands, etc.). Therefore, the UE also determines FD slot #2 as an available slot for repeated PUSCH transmission (counts available slots).

[0330] On the other hand, in FD slot #3, the PUSCH transmission resource overlaps with non-uplink subband resources (e.g., semi-statically configured downlink subband resources) in the frequency domain. In this case, FD slot #3 is excluded from the available slots for PUSCH repetitive transmission (excluded from the count of available slots).

[0331] Fig.19 Demonstrates execution Fig.16 The signaling process between the UE and the base station of the method described in the invention.

[0332] Reference Fig.19 , the base station sends a configuration message for semi-statically setting FD resources to the UE (S191).

[0333] The base station instructs activation of PUSCH repetition based on available slot count (enabling PUSCH repetition based on available slot count) (S192). For example, this may be indicated via "availableSlotCounting" of a PUSCH configuration message (PUSCH-Config) for setting UE-specific PUSCH parameters applicable to a specific BWP.

[0334] The base station sets PUSCH transmission resources for the UE (S193). For example, the PUSCH transmission resources may be set through DCI, a combination of DCI and RRC messages, and the like.

[0335] The UE determines an available time slot among a plurality of time slots, wherein, based on the fact that a specific time slot among the plurality of time slots is a SB-FD (subband full duplex) time slot including both uplink subband resources and non-uplink subband resources in the frequency domain, if the non-uplink subband resources of the specific time slot overlap with the uplink resources used for uplink transmission, the specific time slot is excluded from the count of available time slots (S194). This process is performed at Figures 16 to 18 Described in detail in.

[0336] The UE performs PUSCH repetition transmission in an available time slot (S195).

[0337] Based on the method according to the present disclosure, when an uplink channel is repeatedly transmitted, the utilization rate of the allocated resources can be improved.

[0338] In addition, the operations between the base station and the UE can be accurately predicted, thereby improving the efficiency of communication.

[0339] In some implementations, if all or part of the PRB resources allocated for PUSCH transmission in a specific time slot cannot be used for UL operation, the following operations may be performed.

[0340] Option 1. The UE determines not to perform PUSCH transmission in the corresponding time slot. For example, for PUSCH transmission in a specific SBFD time slot, regardless of whether PUSCH repetition based on available time slot count is enabled, if the PRB resources allocated for PUSCH transmission overlap with non-UL subband resources, PUSCH transmission in the time slot can be omitted. The above-mentioned specific SBFD time slot can be a time slot that the UE determines to perform SBFD operation semi-statically and / or dynamically for the cell.

[0341] That is, in a specific time slot, if the PRB resource overlaps with the non-UL subband resource, the UE may exclude the specific time slot from the available time slots (the count of available time slots) for PUSCH transmission, as shown in FIG. Fig.16 As described in Option 1, or the specific time slot may be included in the time slot resources for PUSCH transmission, but actual PUSCH transmission in the specific time slot may be omitted.

[0342] The method of Option 1 described above can be applied (and may need to be applied) to a case where a count based on available time slots is not applied (i.e., when repeated transmission is performed unconditionally using consecutive time slots) or when a count based on available time slots is applied and SBFD time slots are dynamically generated (e.g., when a time slot that is not determined to be an available time slot is changed to a SBFD time slot).

[0343] Option 2. The UE transmits the PUSCH by performing rate matching on the PUSCH in the PRB resources that cannot be used for UL operation in the corresponding time slot. That is, among the PRB resources allocated for transmitting the PUSCH, the remaining PRB resources except the PRB resources that cannot be used for UL operation are determined as the PRB resources allocated for transmitting the actual PUSCH in the corresponding time slot, and rate matching of the PUSCH TB is performed according to the number of RBs that can transmit the actual PUSCH, and RE mapping is performed for transmission.

[0344] Option 3. The UE punctures and transmits the PUSCH in the PRB resources that cannot be used for UL operation in the corresponding time slot. That is, the UE performs rate matching of the PUSCH TB based on the PRB resources allocated for PUSCH transmission, performs RE mapping, and then punctures the PUSCH transmission in the PRB resources that cannot be used for UL operation. That is, it transmits at zero power.

[0345] At this time, the PRB resources that cannot be used for UL operation may mean “PRB resources not included in the UL subband” or “PRB resources included in the DL subband and / or the guard band”.

[0346] The above proposal may only apply to time resources where the cell operates in SBFD. In this case, the existing standard specification (i.e., if a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific time slot, then the time slot is excluded from the available time slots) applies to time resources where the cell operates in half-duplex.

[0347] Alternatively, the above proposal may only apply to time resources set as flexible by the TDD configuration. In this case, the time resources set as downlink by the TDD configuration are subject to existing standard specifications (i.e., if a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific time slot, the time slot is excluded from the available time slots). In this case, the TDD configuration may mean "tdd-UL-DL-ConfigurationCommon". Alternatively, the TDD configuration may refer to "tdd-UL-DL-ConfigurationCommon" and / or "tdd-UL-DL-ConfigurationDedicated" (if set).

[0348] <Operation of determining available time slots based on whether UL operation can be performed in a symbol allocated for PUSCH transmission>

[0349] When the UE repeatedly transmits PUSCH K times, if a counting method based on available slots is applied to determine N*K slots for transmitting PUSCH (i.e., if "AvailableSlotCounting" is "enabled"), the UE transmits PUSCH using N*K available slots starting from slot #n.

[0350] At this time, the UE determines N*K available slots in which PUSCH transmission is performed as follows: At this time, N is equal to 1 in case of general PUSCH repetition type A transmission rather than TBoMS (TB process over multiple slots) PUSCH.

[0351] If at least one of the symbols indicated by the indexed row of the resource allocation table used in a time slot overlaps with a DL symbol indicated by "tdd-UL-DL-ConfigurationCommon" or "tdd-UL-DL-ConfigurationDedicated" (if provided), or overlaps with a symbol of an SS / PBCH block with an index provided by "ssb-PositionsInBurst", the time slot is not counted in the number of N·K time slots for PUSCH transmission of PUSCH repetition type A scheduled by DCI format 0_1 ​​or 0_2.

[0352] In addition, when the cell performs SBFD operation, if a specific symbol is determined as a SBFD symbol, the UE may use the symbol for uplink even if the symbol is set as downlink by "tdd-UL-DL-ConfigurationCommon".

[0353] For this purpose, the symbol set as downlink by "tdd-UL-DL-ConfigurationCommon" can be set to operate in the uplink via "tdd-UL-DL-ConfigurationDedicated" or through other signaling. In this case, the UE can determine that the symbol is a symbol that can perform PUSCH transmission because the symbol is set as downlink by "tdd-UL-DL-ConfigurationCommon" but is used for uplink. Taking this into account, it may perform the following actions.

[0354] When the available slot-based counting method is applied to PUSCH transmission (ie, when 'AvailableSlotCounting' is 'enabled'), in the following case, a specific slot is not included in the N*K slots in which PUSCH transmission is performed.

[0355] i) if at least one symbol among the symbol resources allocated for PUSCH transmission within the slot is not indicated / determined as a SBFD symbol but is indicated as a downlink via "tdd-UL-DL-ConfigurationCommon" or "tdd-UL-DL-ConfigurationDedicated",

[0356] ii) if at least one symbol among the symbol resources allocated for PUSCH transmission in the time slot is indicated / determined to be a SBFD symbol and is indicated as downlink (or not indicated for uplink) via "tdd-UL-DL-ConfigurationDedicated" (or other semi-static signaling),

[0357] iii) If at least one symbol among the symbol resources allocated for PUSCH transmission within the slot is a SS / PBCH block symbol indicated by "ssb-PositionsInBurst".

[0358] That is, in order to determine the available time slots for PUSCH transmission, the UE may determine the available time slots based on the “operation of determining the available time slots based on whether UL operations can be performed in symbols allocated for PUSCH transmission” and / or the “operation of determining the available time slots based on whether UL operations can be performed in PRB resources allocated for PUSCH transmission” as described above.

[0359] The PUSCH mentioned in this disclosure includes TBoMS PUSCH.

[0360] The above contents may also be applicable to PUCCH transmission.Although the above contents are described / proposed for PUSCH, the contents may also be applied to other signal / channel transmission / reception such as PUSCH and PUCCH.

[0361] c) PUSCH repetition type B

[0362] For PUSCH repetition type B, some symbols that cannot be used for PUSCH transmission are defined as invalid symbols, and the corresponding symbol resources are excluded from the symbol resources constituting the actual repetition.

[0363] When a cell performs SBFD transmission, considering a case where all or part of PRB resources allocated for PUSCH transmission cannot be used for uplink operation, invalid symbols may be determined as follows.

[0364] Option a. Whether the frequency resources allocated for PUSCH transmission in a specific symbol overlap with the PRB resources that cannot be used for UL operation does not affect the determination of invalid symbols for PUSCH transmission. That is, even if the frequency resources allocated for PUSCH transmission overlap with the PRB resources that cannot be used for UL operation, the corresponding symbols can be included when configuring actual repetition.

[0365] Option b. If all or part of the frequency resources allocated for PUSCH transmission in a specific symbol overlap with PRB resources that cannot be used for UL operation, the symbol is included in the invalid symbols for PUSCH transmission. That is, the symbol is not included in the symbols constituting the actual repetition.

[0366] At this time, it is important that the determination of the invalid symbol of the UE and the determination of the invalid symbol of the base station are determined in the same manner without any misunderstanding. In view of this, it is possible to determine the invalid symbol based on the DL / UL subband set / determined according to the semi-static high-layer signaling of the base station. That is, if the DL / UL subband is set / determined based on dynamic signaling, the invalid symbol cannot be determined using this information.

[0367] Thereafter, if all or part of the PRB resources allocated for PUSCH transmission in a specific actual repetition cannot be used for UL operation, the following operations may be performed.

[0368] Option 1. The UE determines not to perform PUSCH transmission in the corresponding actual repetition.

[0369] Option 2. The UE transmits the PUSCH by performing rate matching on the PUSCH in the PRB resources that cannot be used for uplink operation in the corresponding actual repetition. That is, among the PRB resources allocated for transmitting the PUSCH, the remaining PRB resources except the PRB resources that cannot be used for uplink operation are determined as the PRB resources allocated for transmitting the actual PUSCH in the corresponding time slot, and the rate matching of the PUSCH TB is performed according to the number of RBs that can transmit the actual PUSCH, and RE mapping is performed for transmission.

[0370] Option 3. The UE punctures the PUSCH in the PRB resources that cannot be used for uplink operation in the corresponding actual repetition and transmits the PUSCH. That is, rate matching of the PUSCH TB is performed based on the PRB resources allocated for PUSCH transmission, RE mapping is performed, and then punctures the transmission PUSCH on the PRB resources that cannot be used for uplink operation. In other words, transmission is performed at zero power.

[0371] At this time, the PRB resources that cannot be used for uplink operation may mean “PRB resources not included in the UL subband” or “PRB resources included in the DL subband and / or the guard band”.

[0372] The above proposal may only apply to time resources where the cell operates in SBFD. In this case, the existing standard specification (i.e., if a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific time slot, then the time slot is excluded from the available time slots) applies to time resources where the cell operates in half-duplex.

[0373] Alternatively, the above proposal may only apply to time resources set as flexible by the TDD configuration. In this case, the time resources set as downlink by the TDD configuration are subject to existing standard specifications (i.e., if a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific time slot, the time slot is excluded from the available time slots). In this case, the TDD configuration may mean "tdd-UL-DL-ConfigurationCommon". Alternatively, the TDD configuration may mean "tdd-UL-DL-ConfigurationCommon" and / or "tdd-UL-DL-ConfigurationDedicated" (if set).

[0374] Although the above content is described / proposed with respect to PUSCH, the above content may also be applied to the transmission / reception of other signals / channels such as PUSCH and PUCCH.

[0375] Fig. 20 A wireless device applied to this specification is exemplified.

[0376] Reference Fig. 20 , the first wireless device 100 and the second wireless device 200 may transmit radio signals through various RATs (eg, LTE and NR).

[0377] 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 operation flows disclosed in this document. For example, the processor 102 may process the information in 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 codes including instructions for executing part or all of the processing controlled by the processor 102 or for executing the descriptions, functions, processes, proposals, methods, and / or operational flow charts 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 send 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 replaced by a radio frequency (RF) unit. In this specification, a wireless device may represent a communication modem / circuit / chip. The processor 102 determines an available time slot among a plurality of time slots and repeatedly performs uplink transmission in the available time slots. Based on the fact that a specific time slot among the multiple time slots is a sub-band full-duplex (SB-FD) time slot including both uplink sub-band resources and non-uplink sub-band resources in the frequency domain, and the non-uplink sub-band resources of the specific time slot overlap with the uplink resources used for uplink transmission, the specific time slot is excluded from the count of available time slots.

[0378] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may further 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 operation flows disclosed in this document. For example, the processor 202 may process the information in the memory 204 to generate third information / signals, and then may 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 signal of the fourth information / signals in the memory 204. The memory 204 may be connected to the processor 202, and may store various information related to the operation of the processor 202. For example, the memory 204 may store software codes including instructions for executing part or all of the processing controlled by the processor 202 or for executing the descriptions, functions, processes, proposals, methods and / or operational flow charts disclosed in this document. Here, the processor 202 and the memory 204 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 206 may be connected to the processor 202 and may send 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 replaced by an RF unit. In this specification, a wireless device may represent a communication modem / circuit / chip. The processor 202 sends a high-layer signal to a user equipment (UE), the high-layer signal including a field notifying whether to enable a physical uplink shared channel (PUSCH) repetition based on an available time slot count, and based on the high-layer signal, repeatedly receives uplink transmissions from the UE on an available time slot in a plurality of time slots. Here, based on the fact that a specific time slot among multiple time slots is a subband full-duplex (SB-FD) time slot including both uplink subband resources and non-uplink subband resources in the frequency domain and the non-uplink subband resources of the specific time slot overlap with the uplink resources used for uplink transmission, the specific time slot is excluded from the count of available time slots.

[0379] 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, processes, 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, processes, 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, SDU, 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 a 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.

[0380] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. One or more processors 102 and 202 may be implemented using at least one computer readable medium (CRM) including instructions to be executed by at least one processor.

[0381] That is, at least one computer readable medium (CRM) has instructions executed by at least one processor to perform operations, the operations including: determining an available time slot among a plurality of time slots, and repeatedly performing uplink transmission in the available time slots. Here, based on that a specific time slot among the plurality of time slots is a sub-band full-duplex (SB-FD) time slot including both uplink sub-band resources and non-uplink sub-band resources in the frequency domain, and the non-uplink sub-band resources of the specific time slot overlap with the uplink resources used for uplink transmission, the specific time slot is excluded from the count of available time slots.

[0382] 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 codes, commands, and / or command sets.

[0383] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and may store various types of data, signals, messages, information, programs, codes, instructions, and / or commands. One or more memories 104 and 204 may be configured as a read-only memory (ROM), a random access memory (RAM), an electrically erasable programmable read-only memory (EPROM), a flash memory, a hard drive, a register, a cache, a computer-readable storage medium, and / or a combination thereof. At least one memory 104 and 204 may be located inside and / or outside of one or more processors 102 and 202. In addition, one or more memories 104 and 204 may be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0384] One or more transceivers 106 and 206 can send the user data, control information and / or radio signal / channel mentioned in the method and / or operation flow chart disclosed in this document to one or more other devices. One or more transceivers 106 and 206 can receive the user data, control information and / or radio signal / channel mentioned in the description, function, process, proposal, method and / or operation flow chart 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 send and receive radio signals. For example, one or more processors 102 and 202 can perform control so that one or more transceivers 106 and 206 can send user data, control information or radio signal to one or more other devices. In addition, one or more processors 102 and 202 can perform control so that one or more transceivers 106 and 206 can receive user data, control information or radio signal from one or more other devices. In addition, one or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to send or receive user data, control information and / or radio signals / channels mentioned in the description, functions, processes, proposals, methods and / or operation flow charts disclosed in this document through one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert received radio signals / channels, etc. from RF band signals into baseband signals so as to process received user data, control information, radio signals / channels, etc. using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert user data, control information, radio signals / channels, etc. processed using one or more processors 102 and 202 from baseband signals into RF band signals. To this end, one or more of the transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0385] Fig.21 Here, the signal processing can be performed in Fig.18 is executed in processors 102 and 202.

[0386] Reference Fig.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 301, a modulator 302, a layer mapper 303, an antenna port mapper 304, a resource block mapper 305, and a signal generator 306.

[0387] 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 which is a data block provided by the MAC layer.

[0388] The modulator 302 may modulate the scrambled bits into complex-valued modulation symbols. The modulator 302 may modulate the scrambled bits according to a modulation scheme to arrange complex-valued modulation symbols representing positions on a signal constellation diagram. The modulation scheme is not limited, and the coded data may be modulated using m-PSK (m-phase shift keying) or m-QAM (m-quadrature amplitude modulation). The modulator may be referred to as a modulation mapper.

[0389] 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 to be transmitted on an antenna port.

[0390] Each resource block mapper 305 can map the complex-valued modulation symbol for each antenna port to an appropriate resource element in a virtual resource block allocated for transmission. The resource block mapper can map the virtual resource block to a physical resource block according to an appropriate mapping scheme. The resource block mapper 305 can allocate the complex-valued modulation symbol for each antenna port to an appropriate subcarrier and multiplex the complex-valued modulation symbol according to the user.

[0391] Each signal generator 306 can modulate a complex-valued modulation symbol, i.e., an antenna-specific symbol, for each antenna port according to a specific modulation scheme (e.g., OFDM (Orthogonal Frequency Division Multiplexing)) to generate a complex-valued time-domain OFDM symbol signal. The signal generator can perform IFFT (Inverse Fast Fourier Transform) on the antenna-specific symbol, and can insert a CP (Cyclic Prefix) into the time-domain symbol on which IFFT has been performed. The OFDM symbol is subjected to digital-to-analog conversion and up-conversion, and then sent to the receiving device through each transmitting antenna. The signal generator may include an IFFT module, a CP insertion unit, a digital-to-analog converter (DAC), and an up-converter.

[0392] Fig. 22 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 Fig. 20 Processors 102 and 202.

[0393] Reference Fig. 22 , a transmitting device (e.g., a processor, a processor and a memory, or a processor and a transceiver) in a UE or a BS may include a scrambler 401, a modulator 402, a layer mapper 403, a precoder 404, a resource block mapper 405, and a signal generator 406.

[0394] 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.

[0395] The scrambled bits are modulated into complex-valued modulation symbols by the modulator 402. The modulator may modulate the scrambled bits according to a predetermined modulation scheme to arrange complex-valued modulation symbols representing positions on a 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) may be used to modulate the encoded data.

[0396] The complex-valued modulation symbols may be mapped to one or more transmission layers by a layer mapper 403 .

[0397] 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 assign 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.

[0398] Each resource block mapper 405 maps the complex-valued modulation symbols for each antenna port to appropriate resource elements in the virtual resource block allocated for transmission.

[0399] The resource block mapper 405 may allocate complex-valued modulation symbols to appropriate subcarriers and multiplex the complex-valued modulation symbols according to users.

[0400] Each signal generator 406 can modulate the complex-valued modulation symbol according to a specific modulation scheme (e.g., OFDM) to generate a complex-valued time-domain OFDM symbol signal. The signal generator 406 can perform IFFT (Inverse Fast Fourier Transform) on the antenna-specific symbol, and can insert a CP (Cyclic Prefix) into the time-domain symbol that has been subjected to IFFT. The OFDM symbol is subjected to digital-to-analog conversion and up-conversion, and then sent to the receiving device through each transmitting antenna. The signal generator 406 may include an IFFT module, a CP insertion unit, a digital-to-analog converter (DAC), and an up-converter.

[0401] 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 be restored 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 CP from the digital signal; a FET module for applying FFT (Fast Fourier Transform) to the signal from which the CP has been removed to output a frequency domain signal; and a resource element demapper / equalizer for restoring the frequency domain symbol to an antenna specific symbol. The antenna specific symbol is restored to a transmission layer by a multiplexer, and the transmission layer is restored to a codeword intended to be sent by a transmitting device by a channel demodulator.

[0402] Fig.23 An example of a wireless communication device according to an implementation example of the present disclosure is illustrated.

[0403] Reference Fig.23 , 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.

[0404] The processor 2310 may implement the functions, processes, and methods described in this specification. Fig.23 Processor 2310 Fig.23 The memory 2330 may be Fig. 20 Processors 102 and 202 in.

[0405] The memory 2330 is connected to the processor 2310 and stores information related to the operation of the processor. 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. Fig.23 The memory 2330 may be Fig. 20 The memories 104 and 204 in FIG.

[0406] The user can input various types of information such as a phone number using various techniques such as pressing a button of the keypad 2320 or starting a voice using the microphone 2350. The processor 2310 can receive and process the user information and perform appropriate functions such as making a call using the input phone number. In some scenarios, data can be obtained from the SIM card 2325 or the memory 2330 to perform appropriate functions. In some scenarios, the processor 2310 can display various types of information and data on the display 2315 for the convenience of the user.

[0407] The transceiver 2335 is connected to the processor 2310 and transmits and / or receives RF signals. The processor can control the transceiver to start 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 sending 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 a baseband frequency for processing performed by the processor. The signal can be processed by various techniques such as conversion into audible or readable information so as to be output through the speaker 2345. Fig.23 The transceiver in can be Fig.26 The transceivers 106 and 206 in FIG.

[0408] although Fig.23 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.

[0409] Fig.23 is an example of implementation of the UE, and the implementation example of the present disclosure is not limited thereto. The UE does not necessarily have to include Fig.23 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.

[0410] Fig.24 An example of a processor 2000 is shown.

[0411] Reference Fig.24 , 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 24The processor 2000 may be Fig. 20 Examples of processors 102 and 202.

[0412] Fig.25 An example of a processor 3000 is shown.

[0413] Reference Fig.25 , 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 24 The processor 3000 may be Fig. 20 Examples of processors 102, 202.

[0414] Fig.26 Another example of a wireless device is shown.

[0415] Reference Fig.26 , the 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 .

[0416] Fig.26 An example of a wireless device described in Fig. 20 The example of the wireless device described in is different in that Fig. 20 The processors 102 and 202 are separated from the memories 104 and 204, and Fig.26 In the example of FIG. 1 , the memories 104 and 204 are included in the processors 102 and 202. That is, the processor and the memory may constitute a chipset.

[0417] Fig. 27 Another example of a wireless device applied to the present specification is shown. The wireless device can be implemented in various forms according to use cases / services.

[0418] Reference Fig. 27 , the wireless devices 100 and 200 may correspond to Fig. 20 The wireless devices 100 and 200 of the present invention 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 Fig. 20The 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 may 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 may transmit the 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 the 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.

[0419] 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 a robot 100a in FIG. 34, but is not limited thereto. Vehicles 100b-1, 100b-2 in FIG. 34, XR devices 100c in FIG. 34, handheld devices 100d in FIG. 34, home appliances 100e in FIG. 34, IoT devices 100f in FIG. 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 FIG. 34, BS200 in FIG. 34, network nodes, etc. The wireless device may be used in a mobile or fixed location depending on the usage example / service.

[0420] exist Fig. 27In the wireless devices 100 and 200, various elements, components, units / components and / or modules within the wireless devices 100 and 200 may be fully interconnected through a wired interface, or at least a portion may be wirelessly connected through 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 by wire, and the control unit 120 and the first unit (e.g., 130 and 140) may be connected through the communication unit 110. In addition, each element, component, unit / component 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 a random access memory (RAM), a dynamic RAM (DRAM), a read only memory (ROM), a flash memory, a volatile memory, a non-volatile memory, and / or a combination thereof.

[0421] Fig.28 Examples of handheld devices to which the present specification is applicable are illustrated. Handheld devices may include smartphones, smart tablets, wearable devices (e.g., smart watches or smart glasses), or portable computers (e.g., notebooks). Handheld devices may be referred to as mobile stations (MS), user terminals (UTs), mobile subscriber stations (MSSs), subscriber stations (SSs), advanced mobile stations (AMSs), or wireless terminals (WTs).

[0422] Reference Fig.28 , the handheld 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 I / O 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 Fig. 27 Blocks 110 to 130 / 140.

[0423] The communication unit 110 may send and receive signals (e.g., data and control signals) to and from other wireless devices or BSs. The control unit 120 may perform various operations by controlling the constituent elements of the handheld device 100. The control unit 120 may include an application processor (AP). The memory unit 130 may store data / parameters / programs / codes / commands required to drive the handheld device 100. In addition, the memory unit 130 may store input / output data / information. The power supply unit 140a may supply power to the handheld device 100, including a wired / wireless charging circuit, a battery, etc. The interface unit 140b may support the connection of the handheld device 100 with other external devices. The interface unit 140b may include various ports (e.g., audio I / O ports and video I / O ports) for connecting to external devices. The I / O unit 140c may input or output video information / signals, audio information / signals, data and / or information input by a user. The I / O unit 140c may include a camera, a microphone, a user input unit, a display unit 140d, a speaker and / or a tactile module.

[0424] For example, in the case of data communication, the I / O unit 140c may acquire information / signals (e.g., touch, text, voice, image, or video) input by the user, and the acquired information / signals may be stored in the memory unit 130. The communication unit 110 may convert the information / signals stored in the memory into radio signals, and directly transmit the converted radio signals to other wireless devices or to a BS. In addition, the communication unit 110 may receive radio signals from other wireless devices or BSs, and then restore the received radio signals to the original information / signals. The restored information / signals may be stored in the memory unit 130, and may be output in various types (e.g., text, voice, image, video, or tactile) through the I / O unit 140c.

[0425] Fig.29 A communication system 1 applied to the present specification is shown.

[0426] Reference Fig.29, 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 driving 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 device, a digital signage, a vehicle, a robot, and the like. Handheld devices may include smart phones, smart tablets, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., notebooks). Home appliances may include televisions, refrigerators, and washing machines. IoT devices may include sensors and smart meters. For example, the BS and the network may be implemented as wireless devices, and a specific wireless device 200a may operate as a BS / network node relative to other wireless devices.

[0427] The wireless devices 100a to 100f may be connected to the network 300 via the BS 200. AI technology may be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f may be connected to the AI ​​server 400 via the network 300. The network 300 may be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although the wireless devices 100a to 100f may communicate with each other via the BS 200 / network 300, the wireless devices 100a to 100f may perform direct communication (e.g., sidelink communication) with each other without passing through the BS / network. For example, the vehicles 100b-1 and 100b-2 may perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). In addition, an IoT device (e.g., a sensor) may perform direct communication with other IoT devices (e.g., a sensor) or other wireless devices 100a to 100f.

[0428] Wireless communication / connection 150a, 150b or 150c can be established between wireless devices 100a to 100f / BS200 or BS200 / BS200. Herein, wireless communication / connection can be established through 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 can send / receive radio signals to each other through wireless communication / connection 150a and 150b. For example, wireless communication / connection 150a and 150b can send / receive signals through various physical channels. To this end, various configuration information configuration processes for sending / receiving radio signals, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping) and at least a portion of the resource allocation process can be performed based on various proposals of the present disclosure.

[0429] In addition, NR supports multiple parameter sets (or subcarrier spacing (SCS)) to support various 5G services. For example, if the SCS is 15kHz, wide areas in traditional cellular bands can be supported. If the SCS is 30kHz / 60kHz, dense cities, lower latency, and wider carrier bandwidths are supported. If the SCS is 60kHz or higher, bandwidths greater than 24.25GHz are used to overcome phase noise.

[0430] The NR frequency band may be defined as two types of frequency ranges (FR1, FR2). The values ​​of the frequency ranges may vary. For example, the two types of frequency ranges (FR1, FR2) may be as shown in Table 6 below. For ease of explanation, among the frequency ranges used in the NR system, FR1 may mean "lower than 6 GHz range", and FR2 may mean "higher than 6 GHz range" and may also be referred to as millimeter wave (mmW).

[0431] [Table 6]

[0432] Frequency range specification Corresponding frequency range Subcarrier Spacing (SCS) FR1 450MHz to 6000MHz 15, 30, 60kHz FR2 24250MHz to 52600MHz 60, 120, 240kHz

[0433] As described above, the value of the frequency range in the NR system can be changed. For example, as shown in Table 7 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 a variety of purposes, for example, an unlicensed frequency band for vehicle-specific communications (e.g., autonomous driving).

[0434] [Table 7]

[0435] Frequency range specification Corresponding frequency range Subcarrier Spacing (SCS) FR1 410MHz to 7125MHz 15, 30, 60kHz FR2 24250MHz to 52600MHz 60, 120, 240kHz

[0436] 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 the following steps: determining an available time slot among a plurality of time slots; as well as repeatedly performing uplink transmission in the available time slots, Wherein, based on the fact that a specific time slot among the multiple time slots is a sub-band full-duplex SB-FD time slot including both uplink sub-band resources and non-uplink sub-band resources in the frequency domain and the non-uplink sub-band resources of the specific time slot overlap with the uplink resources used for the uplink transmission, the specific time slot is excluded from the count of the available time slots.

2. The method according to claim 1, wherein: The non-uplink subband resource is at least one of a physical resource block PRB, a downlink subband, and a guard band not included in an uplink subband.

3. The method according to claim 1, further comprising the steps of: A higher layer signal is received, the higher layer signal including a field notifying whether a physical uplink shared channel (PUSCH) repetition based on an available time slot count is enabled.

4. The method according to claim 3, wherein: Based on the absence of the field in the higher layer signal, the PUSCH repetition based on the available time slot count is disabled.

5. The method according to claim 3, wherein: According to the PUSCH repetition based on the available slot count being not enabled and non-uplink subband resources of a slot among the plurality of slots overlap with uplink resources for uplink transmission, PUSCH transmission is skipped in the slot.

6. The method according to claim 1, wherein: The specific time slot includes a plurality of symbols in the time domain.

7. The method according to claim 6, wherein: In at least one symbol of the plurality of symbols, the specific time slot is excluded from the count of the available time slots based on the non-uplink subband resources overlapping the uplink resources used for the uplink transmission.

8. The method according to claim 1, wherein: The uplink sub-band resources and the non-uplink sub-band resources are determined based on a configuration message, and the configuration message is a higher layer signal.

9. The method according to claim 8, wherein: The configuration message semi-statically configures the uplink sub-band resources and the non-uplink sub-band resources.

10. The method according to claim 1, wherein: The plurality of time slots include: i) the SB-FD time slot and ii) a half-duplex HD time slot including an uplink sub-band or a downlink sub-band.

11. The method according to claim 10, wherein: Based on the fact that the PUSCH transmission symbol used for the uplink transmission overlaps with the SSB transmission symbol used for synchronization signal / physical broadcast channel SS / PBCH transmission in the time domain, the HD time slot is excluded from the count of the available time slots.

12. The method according to claim 1, wherein: When determining whether the specific time slot is the SB-FD time slot, the SB-FD time slot is limited to the SB-FD time slot indicated by the semi-static configuration information among the dynamic configuration information and the semi-static configuration information.

13. The method according to claim 1, wherein: Based on that non-uplink subband resources of an available time slot among the available time slots overlap with uplink resources used for uplink transmission, physical uplink shared channel (PUSCH) transmission is skipped in the available time slot.

14. A user equipment UE, the UE comprising: Transceiver; at least one memory; as well as at least one processor operatively coupled to the at least one memory and the transceiver, wherein the processor is adapted to: determining an available time slot among a plurality of time slots; and repeatedly performing uplink transmission in the available time slots, Wherein, based on the fact that a specific time slot among the multiple time slots is a sub-band full-duplex SB-FD time slot including both uplink sub-band resources and non-uplink sub-band resources in the frequency domain and the non-uplink sub-band resources of the specific time slot overlap with the uplink resources used for the uplink transmission, the specific time slot is excluded from the count of the available time slots.

15. A device of 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 processor is adapted to: determining an available time slot among a plurality of time slots; and repeatedly performing uplink transmission in the available time slots, Wherein, based on the fact that a specific time slot among the multiple time slots is a sub-band full-duplex SB-FD time slot including both uplink sub-band resources and non-uplink sub-band resources in the frequency domain and the non-uplink sub-band resources of the specific time slot overlap with the uplink resources used for the uplink transmission, the specific time slot is excluded from the count of the available time slots.

16. At least one computer readable medium (CRM) having instructions executable by at least one processor to perform operations comprising: determining an available time slot among a plurality of time slots; as well as repeatedly performing uplink transmission in the available time slots, Wherein, based on the fact that a specific time slot among the multiple time slots is a sub-band full-duplex SB-FD time slot including both uplink sub-band resources and non-uplink sub-band resources in the frequency domain and the non-uplink sub-band resources of the specific time slot overlap with the uplink resources used for the uplink transmission, the specific time slot is excluded from the count of the available time slots.

17. A method for operating a base station in a wireless communication system, the method comprising the steps of: Sending a higher layer signal to a user equipment UE, wherein the higher layer signal includes a field for notifying whether to enable a physical uplink shared channel PUSCH repetition based on an available time slot count; as well as repeatedly receiving uplink transmissions from the UE on the available time slots in a plurality of time slots based on the higher layer signal, Wherein, based on the fact that a specific time slot among the multiple time slots is a sub-band full-duplex SB-FD time slot including both uplink sub-band resources and non-uplink sub-band resources in the frequency domain and the non-uplink sub-band resources of the specific time slot overlap with the uplink resources used for the uplink transmission, the specific time slot is excluded from the count of the available time slots.

18. A base station BS, comprising: Transceiver; at least one memory; as well as at least one processor operatively coupled to the at least one memory and the transceiver, wherein the processor is adapted to: sending a higher layer signal to a user equipment UE, wherein the higher layer signal includes a field for notifying whether to enable a physical uplink shared channel (PUSCH) repetition based on an available time slot count; and repeatedly receiving uplink transmissions from the UE on the available time slots in a plurality of time slots based on the higher layer signal, Wherein, based on the fact that a specific time slot among the multiple time slots is a sub-band full-duplex SB-FD time slot including both uplink sub-band resources and non-uplink sub-band resources in the frequency domain and the non-uplink sub-band resources of the specific time slot overlap with the uplink resources used for the uplink transmission, the specific time slot is excluded from the count of the available time slots.

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