Device operating method in wireless communication system and device using the same

Abstract

A device operation method and device in a wireless communication system are provided. The apparatus may be a terminal, a chipset, or a base station. When an uplink channel transmission symbol overlaps with a synchronization signal / physical broadcast channel (SS / PBCH) reception symbol in a specific time slot, a terminal determines whether to perform uplink channel transmission in the specific time slot, the specific time slot including a plurality of symbols in a time domain, and performs uplink channel transmission based on the determination of the specific time slot, the particular time slot is included among available time slots for uplink channel transmission.

Description

Technical Field

[0001] The present disclosure relates to a method of operating 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, both DL resources and UL resources may exist in the same time resource, and from the perspective of the base station, uplink reception may be performed while downlink transmission is being performed. For example, in a time resource in which full-duplex operation is performed, the base station may perform uplink reception while transmitting a synchronization signal / physical broadcast channel (SS / PBCH) block (SSB).

[0005] However, the current standard specification stipulates that the user equipment (UE) cannot perform uplink transmission in the symbol resources in which the SS / PBCH block (SSB) is transmitted. Therefore, when the UE performs uplink transmission, for example, repeated PUSCH / PUCCH transmission, there may be a disadvantage in resource utilization. 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: determining whether to perform uplink channel transmission in a specific time slot based on the overlap of an uplink channel transmission symbol with a synchronization signal / physical broadcast channel SS / PBCH reception symbol in the specific time slot, the specific time slot including a plurality of symbols in the time domain; and including the specific time slot in available time slots for uplink channel transmission based on the determination that the uplink channel transmission is to be performed.

[0010] Beneficial Effects

[0011] According to the method disclosed in the present invention, when the base station transmits SS / PBCH within the FD operation time resource (e.g., a specific time slot), if certain conditions are met, the UE can perform uplink transmission, that is, the UE can perform PUSCH / PUCCH repeated transmission based on the available time slots in the specific time slot. Therefore, the waiting time for repeated PUSCH / PUCCH transmission can be reduced.

[0012] From the perspective of the base station, even if SS / PBCH is sent in the time resources where FD operation is performed, the uplink transmission of the UE can be received.

[0013] In addition, from the UE perspective, measurement / detection performance through SS / PBCH can be maintained in the time resources where FD operation is performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A wireless communication system to which the present disclosure can be applied is illustrated.

[0015] Figure 2 is a block diagram illustrating a radio protocol architecture for a user plane.

[0016] Figure 3 is a block diagram illustrating a radio protocol architecture for a control plane.

[0017] Figure 4 The system structure of the next generation radio access network (NG-RAN) to which NR is applied is illustrated.

[0018] Figure 5 Illustrate the functional division between NG-RAN and 5GC.

[0019] Figure 6 The frame structure applicable to NR is illustrated.

[0020] Figure 7 The time slot structure of the NR frame is illustrated.

[0021] Figure 8CORESET is instantiated.

[0022] Fig. 9 An example of a frame structure for a new radio access technology is illustrated.

[0023] Fig.10 The structure of a self-contained time slot is illustrated.

[0024] Fig.11 Physical channels and typical signal transmission are illustrated.

[0025] Fig.12 An example of how full duplex is applied within a carrier is illustrated.

[0026] 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.

[0027] Fig.14 Examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource are shown.

[0028] Fig.15 Another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource is shown.

[0029] Fig.16 A method of operating a UE in a wireless communication system is illustrated.

[0030] Fig.17 UE operation according to the existing standard specification in a time resource operating in half-duplex (HD) is illustrated.

[0031] Fig.18 Illustrated based on Fig.16 The method described in UE operates in FD (full duplex) time slot.

[0032] Fig.19 Demonstrates execution Fig.16 The specific signaling process between the base station and the UE of the method described in.

[0033] Fig. 20 The wireless devices to which the present specification can be applied are exemplified.

[0034] Fig.21 An example of a signal processing module structure is shown.

[0035] Fig. 22 Another example of the structure of the signal processing module in the transmission device is shown.

[0036] Fig.23 An example of a wireless communication device according to an implementation example of the present disclosure is shown.

[0037] Fig.24 An example of a processor 2000 is shown.

[0038] Fig.25 An example of a processor 3000 is shown.

[0039] Fig.26 Another example of a wireless device is shown.

[0040] Fig. 27 Another example of a wireless device applied to the present specification is shown.

[0041] Fig.28 A mobile device to which this specification is applied is exemplified.

[0042] Fig.29 The communication system 1 applied to this specification is exemplified. DETAILED DESCRIPTION

[0043] 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".

[0044] 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".

[0045] 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".

[0046] 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".

[0047] 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".

[0048] The technical features described separately in one drawing in this specification may be implemented separately or simultaneously.

[0049] Figure 1 A 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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).

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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).

[0065] 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.

[0066] New radio access technology (New RAT, NR) will be described below.

[0067] 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).

[0068] Figure 4 The system structure of the next generation radio access network (NG-RAN) to which NR is applied is illustrated.

[0069] 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.

[0070] Figure 5 Illustrate the functional division between NG-RAN and 5GC.

[0071] 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.

[0072] Figure 6 An example of a frame structure that can be applied to NR is illustrated.

[0073] Reference Figure 6In 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).

[0074] The following Table 1 illustrates subcarrier spacing configuration μ.

[0075] [Table 1]

[0076]

[0077] Table 2 below illustrates the number of time slots (N) in a frame according to the subcarrier spacing configuration μ. frame,μ slot ), the number of time slots in a subframe (N subframe,μ slot ), the number of symbols in a time slot (N slot symb )wait.

[0078] [Table 2]

[0079]

[0080] exist Figure 6 In FIG. 1 , the cases where μ=0, 1, 2, and 3 are illustrated.

[0081] 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.

[0082] [Table 2-1]

[0083] <![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

[0084] 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.

[0085] Figure 7 The time slot structure is illustrated.

[0086] 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.

[0087] The physical downlink control channel (PDCCH) may include one or more control channel elements (CCEs) as illustrated in Table 3 below.

[0088] [Table 3]

[0089] Aggregation Level Number of CCEs 1 1 2 2 4 4 8 8 16 16

[0090] 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.

[0091] 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.

[0092] A new unit called Control Resource Set (CORESET) may be introduced in NR. The UE may receive PDC CH in the CORESET.

[0093] Figure 8 CORESET is instantiated.

[0094] Reference Figure 8 , CORESET includes N in the frequency domain CORESET RB resource blocks and N in the time domain CORESETsymb ∈{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).

[0095] 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.

[0096] Multiple CORESETs can be configured for a UE.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] In NR, the following technologies / features can be applied.

[0102] <Self-contained subframe structure>

[0103] Fig. 9 An example of a frame structure for a new radio access technology is illustrated.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] Fig.10 The structure of a self-contained time slot is illustrated.

[0108] 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.

[0109] 1. DL configuration only,

[0110] 2. UL configuration only,

[0111] 3. Hybrid UL-DL configuration,

[0112] -DL area + GP (guard period) + UL control area,

[0113] -DL control area + GP + UL area.

[0114] DL area: (i) DL data area, (ii) DL control area + DL data area

[0115] UL region: (i) UL data region, (ii) UL data region + UL control region.

[0116] 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.

[0117] <Analog Beamforming #1>

[0118] 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.

[0119] 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.

[0120] 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.

[0121] <Analog Beamforming #2>

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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),

[0131] 2) PDCCH DM-RS scrambling sequence initialization value,

[0132] 3) the duration of the CORESET in the time domain (can be given in symbols),

[0133] 4) Resource block collection,

[0134] 5) CCE to REG mapping parameters,

[0135] 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"),

[0136] 7) An indication of the presence of a Transmission Configuration Indication (TCI) field for a specific DCI format transmitted by PDCCH in CORESET, etc.

[0137] 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.

[0138] 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.

[0139] 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).

[0140] [Table 4]

[0141] 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

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] Fig.11 Physical channels and typical signal transmission are illustrated.

[0147] 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.

[0148] 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.

[0149] (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.

[0150] 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).

[0151] 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).

[0152] 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] 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).

[0158] The following definitions are made in this disclosure.

[0159] -AC(x): access link between node (x) and UE.

[0160] - BH(xy): backhaul link between node (x) and node (y).

[0161] 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.

[0162] 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.

[0163] The technical features described separately in one of the drawings in this specification may be implemented separately or simultaneously.

[0164] 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.

[0165] Now, the full-duplex operation will be described.

[0166] 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.

[0167] 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.

[0168] Fig.12 An example of how full duplex is applied within a carrier is shown.

[0169] Reference Fig.12 , full-duplex methods include Fig.12 Sub-band full-duplex (hereinafter referred to as SB-FD) as shown in (a) of FIG. Fig.12 Spectrum sharing full-duplex (hereinafter, SS-FD) shown in (b).

[0170] 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.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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.

[0178] 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.

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

[0180] Alternatively, only the base station can perform full-duplex operation, while the UE can perform half-duplex operation. The base station can 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.

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

[0182] 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.

[0183] 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.

[0184] A. Characteristics of DL / UL time / frequency resources for SB-FD and SS-FD operations

[0185] 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).

[0186] 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.

[0187] 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).

[0188] Fig.14 Examples of a first time resource, a second time resource, a first frequency resource, and a second frequency resource are shown.

[0189] 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.

[0190] 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.

[0191] Fig.15 Another example of a first time resource, a second time resource, a first frequency resource, and a second frequency resource is shown.

[0192] 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.

[0193] 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.

[0194] The first frequency resource and / or the second frequency resource may have all or some of the following characteristics.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] 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.

[0199] 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".

[0200] 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".

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

[0202] When a specific time resource is set as a time resource (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.

[0203] 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.

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

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

[0206] In existing NR TDD carriers, the base station performs only one operation, downlink or uplink, in specific time resources. In this case, in the time resources when the SSB is transmitted, the base station always operates in the downlink.

[0207] For UEs operating in existing TDD, the following assumptions exist for the symbols in which the SSB is transmitted.

[0208] 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).

[0209] 2) The SS / PBCH transmission symbols cannot be set to uplink through the SFI (Slot Format Indication) of DCI format 2_0.

[0210] 3) When transmitting SS / PBCH in symbols 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 symbols, the uplink transmission is not performed. In the case of SRS, if the flexible symbols overlap with the SS / PBCH symbols, SRS transmission is not performed in the overlapping symbols.

[0211] In addition, in FDR environments such as SB-FD and SS-FD, from the perspective of the cell, 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.

[0212] Therefore, even when transmitting SS / PBCH in the time resources when the cell performs FDR operations, the base station can perform uplink reception while transmitting SS / PBCH.

[0213] In addition, according to the current standard specifications, UEs cannot perform uplink transmission on the symbol resources where SS / PBCH is transmitted. In this case, FDR operations cannot be performed on the SS / PBCH transmission time resources.

[0214] <PDSCH / PUSCH / PUCCH Repetition>

[0215] 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.

[0216] 1) PDSCH

[0217] 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.

[0218] 2) PUSCH

[0219] There are two types of PUSCH repetition: PUSCH repetition type A and PUSCH repetition type B.

[0220] a. PUSCH repetition type A

[0221] For PUSCH repetition type A, the repetition operation varies depending on the value of a parameter (eg, "AvailableSlotCounting") set by a higher layer signal.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] 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.

[0226] 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.

[0227] b. PUSCH repetition type B

[0228] 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.

[0229] 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.

[0230] At this time, invalid symbols include:

[0231] i) Downlink symbols configured by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated,

[0232] ii) an invalid symbol indicated by the Invalid Symbol Pattern Indicator field in the UL Grant,

[0233] iii) SS / PBCH symbols,

[0234] iv) the symbol for the CORESET of the Type0-PDCCH CSS set indicated by pdcch-ConfigSIB1 in the MIB,

[0235] v) Invalid symbols for DL-UL switching configured by RRC.

[0236] 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.

[0237] 3) PUCCH

[0238] When the PUCCH is repetitively transmitted K times, the PUCCH is repetitively transmitted over 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.

[0239] i) If at least one of 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,

[0240] ii) If at least one of the symbols allocated for PUCCH transmission overlaps with the symbols of an SSB having an index provided by ssb-PositionsInBurst.

[0241] For the K time slots constituting the PUCCH transmission, the same symbol resources are used for the PUCCH transmission. If, in a specific time slot constituting the PUCCH transmission, at least one of the symbols allocated for PUCCH transmission cannot be used for the PUCCH transmission, the PUCCH transmission in that time slot is discarded / omitted.

[0242] In an SBFD environment, when a UE repetitively transmits PDSCH / PUSCH / PUCCH, etc., the method for determining the time slot resources constituting the repetitive transmission needs to be different from the method in the existing TDD environment.

[0243] Next, a method for determining the repetitive time slot resources constituting PDSCH / PUSCH / PUCCH transmission in in-band full-duplex operation is described.

[0244] This disclosure assumes SB-FD operation, in which a cell simultaneously performs DL operation and UL operation using different frequency resources (e.g., subbands) in the same time resource. However, this disclosure can also be applied to the case where a cell performs SS-FD operation.

[0245] <A. Considering the repetition of SS / PBCH symbol resources>

[0246] 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.

[0247] 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.

[0248] 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.

[0249] Hereinafter, a method for determining whether a UE will perform PUSCH transmission in a time slot when a PUSCH transmission symbol overlaps with an SS / PBCH transmission symbol in a specific time slot may follow the contents of Section B and Section C described below.

[0250] a) PUSCH repetition type A / PUCCH

[0251] 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.

[0252] 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.

[0253] 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.

[0254] 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.

[0255] 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).

[0256] 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).

[0257] The above content can also be applied to PUCCH transmission.

[0258] 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.

[0259] b) PUSCH repetition type B

[0260] 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.

[0261] Option 1: Do not include SS / PBCH transmission symbols in invalid symbols.

[0262] 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.

[0263] 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.

[0264] 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.

[0265] Alternatively, the above may only apply to time resources configured as flexible by TDD. In this case, time resources configured as downlink by TDD are subject to existing standard specifications (i.e., if the PUSCH transmission symbols overlap with the SS / PBCH transmission symbols in a specific time slot, that 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).

[0266] The content of the present disclosure may also be applied to UL transmission in the CORESET symbols for Type0-PDCCH CSS. In this case, the SS / PBCH transmission symbols may be interpreted by replacing them with the symbols for the CORESET for Type0-PDCCH CSS.

[0267] The following disclosure describes UE operations when there is a conflict between SSB and UL transmission in in-band full-duplex operation.

[0268] <B. Conflict between SS / PBCH reception resources and UL transmission resources in an SB-FD environment>

[0269] In the case of existing UEs, in a TDD environment, if there is a conflict between the symbol resources used by the base station to transmit SS / PBCH (from the UE's perspective, the symbol resources for receiving SS / PBCH) and the symbol resources for which UL transmission is scheduled, the UL transmission is not performed.

[0270] For example, for operation on a single carrier in an unpaired spectrum, for the symbol set of the time slot for receiving the SS / PBCH block indicated to the UE via "ssb-PositionsInBurst" in system information (e.g., SIB1) (a parameter indicating the time domain position of the SSB sent within the half-frame in which the SS / PBCH block (SSB) is located) or via "ssb-PositionsInBurst" in "ServingCellConfigCommon" (an information element in SIB1 used to set cell-specific parameters of the UE's serving cell), or if "DLorJoint-TCIState" or "followUnifiedTCIstate" is not provided to the UE via "ssb-PositionsInBurst" in "SSB-MTCAdditionalPCI" associated with a physical cell ID with an active TCI state, the UE does not send PUSCH, PUCCH, PRACH in the time slot if the transmission would overlap with any symbol from the symbol set and the UE does not send SRS in the symbol set of the time slot. When the symbol set of this timeslot is provided to the UE, the UE does not expect the symbol set of this timeslot to be indicated as uplink through "tdd-UL-DL-ConfigurationCommon" (cell-specific TDD UL / DL configuration) or "tdd-UL-DL-ConfigurationDedicated" (UE-specific TDD UL / DL configuration).

[0271] In addition, when N Rx-Tx and N Tx-Rx When referred to as Rx-Tx switching time and Tx-Rx switching time, respectively, for a conventional UE, according to the following content, UL transmission is not expected to be performed at a time point earlier than the time point of the Rx-Tx switching time from the end point of the last symbol among the symbol resources for transmitting SS / PBCH in a TDD environment. In addition, SS / PBCH reception is not expected to be performed at a time point earlier than the time point of the Tx-Rx switching time from the end point of the last symbol among the symbol resources for performing UL transmission.

[0272] The above-mentioned Rx-Tx switching time refers to the switching time required for the UE to perform UL-Tx (uplink transmission) operation after performing DL-Rx (downlink reception) operation, and the Tx-Rx switching time refers to the switching time required for the UE to perform DL-Rx (downlink reception) operation after performing UL-Tx (uplink transmission) operation.

[0273] A UE that does not have full-duplex communication capability does not expect the last received downlink symbol in the same cell to end earlier than N Rx-Tx Tc Transmitted in uplink.

[0274] The following table is N Rx-Tx and N Tx-Rx An example of a UE that does not have full-duplex communication capability does not expect that the last transmitted uplink symbol in the same cell will be transmitted earlier than N Tx-Rx T c Reception is performed in the downlink.

[0275] T c =1 / (△f max ·N f ), and △f max =480·10 3 Hz,N f =4096.

[0276] The following table is N Rx-Tx and N Tx-Rx .

[0277] [Table 5]

[0278] Conversion time FR1 FR2 <![CDATA[N Tx-Rx ]]> 25600 13792 <![CDATA[N Rx-Tx ]]> 25600 13792

[0279] In the existing TDD environment, it is assumed that the DL and UL operation time resources of the UE are mainly determined semi-statically, and it is assumed that the base station can guarantee the Tx-Rx / Rx-Tx switching time required for the UE to switch between DL operation and UL operation by setting flexible symbols and adjusting scheduling.

[0280] On the other hand, for UEs operating in an SB-FD environment, the time resources used for operating in DL and / or UL are relatively flexible and can be changed dynamically compared to existing TDD UEs. Therefore, it may be difficult for the base station to guarantee the appropriate Tx-Rx / Rx-Tx switching time between DL reception and UL transmission of the UE through scheduling and gap time configuration. That is, there may not be enough Tx-Rx / Rx-Tx switching time between the time resources at which the UE should perform DL reception according to scheduling and the time resources at which the UE should perform UL transmission.

[0281] Therefore, even if the SS / PBCH reception symbol resources and the UL transmission symbol resources do not overlap from the UE's perspective, the UE operation needs to be defined for the case where there is no Tx-Rx / Rx-Tx switching time between the SS / PBCH reception symbol resources and the UL transmission symbol resources.

[0282] In view of this, the present disclosure proposes the following content so that the UE can perform SS / PBCH reception even when there is no Tx-Rx / Rx-Tx switching time between SS / PBCH reception symbol resources and UL transmission symbol resources.

[0283] i) If the time by which the last symbol resource including a UL transmission (e.g., PUSCH, PUCCH) is earlier than the first symbol of the next transmitted SS / PBCH block (= SSB) is not more than the Tx-Rx switching time, the UE shall not perform the corresponding UL transmission. If the corresponding UL transmission is SRS, the UE shall not transmit SRS only for symbol resources that are earlier than the first symbol of the SS / PBCH block by not more than the Tx-Rx switching time, i.e., the UE shall transmit SRS for symbol resources that are earlier than the first symbol of the SS / PBCH block by more than the Tx-Rx switching time.

[0284] ii) If the first symbol resource including a UL transmission (e.g., PUSCH, PUCCH) is not more than the Rx-Tx switching time away from the last symbol of the previously transmitted SS / PBCH block, the UE shall not perform the UL transmission. At this time, if the corresponding UL transmission is SRS, the UE shall not transmit SRS only for symbol resources that are not more than the Rx-Tx switching time away from the last symbol of the SS / PBCH block. That is, SRS is transmitted in symbol resources that are more than the Rx-Tx switching time away from the last symbol of the SS / PBCH block.

[0285] The Tx-Rx / Rx-Tx switching time required by the UE may vary depending on the UE's capabilities and may also vary depending on the alignment of the center frequencies between the DL BWP and UL BWP on which the UE operates. If the center frequencies between the DL BWP and UL BWP are not aligned, more Tx-Rx / Rx-Tx switching time may be required because the UE shall perform a center frequency switching operation in addition to the Tx / Rx switching operation.

[0286] Taking this into account, the UE may report its required Tx-Rx / Rx-Tx switching time to the base station.

[0287] In addition, the base station may set the Tx-Rx / Rx-Tx switching time value that the UE will assume for operation.

[0288] <UE Behavior When SS / PBCH and UL Transmission Conflict>

[0289] In the existing TDD environment, since the base station shall always operate in the downlink in the resources for transmitting SS / PBCH, UL reception cannot be performed in the time resources for transmitting SS / PBCH. However, in the SB-FD environment, the base station is capable of performing UL reception in the time resources for transmitting SS / PBCH.

[0290] Unlike existing UEs in a TDD environment (in which they cannot perform UL transmission in time resources in which SS / PBCH is sent (by the base station)), in order to perform UL reception in time resources in which the base station sends SS / PBCH in an SB-FD environment, it is necessary to enable the UE to perform UL transmission in time resources in which SS / PBCH is sent.

[0291] C-1. Priority of UL signal / channel transmission

[0292] In the present disclosure, it is proposed that the UE can perform UL transmission in the time resources for transmitting SS / PBCH, as shown below.

[0293] Proposal 1. From the perspective of the UE, when a conflict occurs between symbol resources for receiving SS / PBCH and UL transmission (e.g., PUSCH, PUCCH) symbol resources, the UE may perform uplink transmission without receiving SS / PBCH. In this case, the conflict between SS / PBCH transmission symbol resources (base station) and UL transmission (e.g., PUSCH, PUCCH) symbol resources (UE) may include not only the situation where there is an overlap between SS / PBCH transmission symbol resources and UL transmission symbol resources, but also i) the time resources equivalent to the Tx-Rx / Rx-Tx switching time before / after the above-mentioned SS / PBCH transmission symbol resources and SS / PBCH transmission symbol resources and ii) the situation where there is an overlap between UL transmission symbol resources.

[0294] i) If the symbol resources of UL transmission (e.g., PUSCH, PUCCH) performed (or to be performed) by the UE overlap with the symbol resources of SS / PBCH blocks sent (or to be sent) (by the base station), the UE does not receive the corresponding SS / PBCH blocks.

[0295] ii) If the last symbol resource constituting the (base station's) SS / PBCH transmission is not earlier than the first symbol constituting the (UE's) UL transmission (e.g., PUSCH, PUCCH) to be (or to be) sent by more than the Rx-Tx switching time, the UE does not receive the SS / PBCH transmission.

[0296] iii) If the first symbol resource constituting the SS / PBCH transmission (of the base station) is no more than the Tx-Rx switching time apart from the last symbol constituting the UE's previously transmitted UL transmission (e.g., PUSCH, PUCCH), the UE does not receive the SS / PBCH transmission.

[0297] Proposal 2. In the time resources operating in SBFD, DL resources and UL resources should be composed of different frequency resources. Therefore, the frequency resources for sending SS / PBCH and the frequency resources for sending UL should not overlap with each other. In the specific time resources where the base station operates in SBFD, UL reception cannot be performed on the frequency resources for sending SS / PBCH. In view of this, if a conflict occurs between the symbol resources for sending SS / PBCH in the time domain and the symbol resources for performing UL transmission (e.g., PUSCH, PUCCH), and if there is no overlap between the frequency resources for sending SS / PBCH in the frequency domain and the frequency resources for performing UL transmission, the UE can perform uplink transmission without receiving SS / PBCH.

[0298] On the other hand, if there is a conflict between the symbol resources used to send SS / PBCH and the symbol resources used for UL transmission (e.g., PUSCH, PUCCH) in the time domain, or if there is an overlap between the frequency resources used to send SS / PBCH and the frequency resources used to perform UL transmission in the frequency domain, the UE cannot perform uplink transmission.

[0299] At this time, the frequency resources for sending SS / PBCH may specifically refer to the following contents.

[0300] i) It may refer to the RB resources constituting the actual SS / PBCH transmission.

[0301] ii) It may refer to the RB resource for configuring the transmission of SS / PBCH and the G RB resources before / after. This is because from the perspective of the base station, G protection RBs may be required to reduce interference between DL transmission and UL reception. The value of G above may be defined in the standard specification, or may be a value set from the base station to the UE.

[0302] Proposal 3. If the cell operates in HD for some time resources and in SBFD only for some time resources, the base station may perform UL reception in symbols in which SS / PBCH is transmitted only in the time resources in which it operates in SBFD. In the time resources in which HD is operated, the base station can only operate in DL or UL, so it is better to operate in DL as before in symbols in which SS / PBCH is transmitted. With this in mind, the method of allowing the UE to perform UL transmission when a conflict occurs between symbol resources in which SS / PBCH is transmitted and UL transmission symbol resources (as in the above-mentioned Proposal 1 and Proposal 2) may only be applicable to time resources in which the cell operates in SBFD. That is, if the UE can determine the time resources (e.g., time slots) in which the UE operates in SBFD, the above-mentioned Proposal 1 and Proposal 2 may only be applied to time resources in which the cell operates in SBFD.

[0303] The time resources used for the cell to perform SBFD operations may be the same as the time resources set as DL or flexible by the TDD configuration. In this case, the content of the present disclosure may be applied to the time resources for sending all SS / PBCHs. Alternatively, the time resources used for the cell to perform SBFD operations may be the same as the time resources set as flexible by the TDD configuration. In this case, the content of the present disclosure may be applied to the time resources for sending SS / PBCH within the flexible time resources set by the TDD configuration.

[0304] At this time, the TDD configuration may represent “tdd-UL-DL-ConfigurationCommon”. Alternatively, the TDD configuration may represent “tdd-UL-DL-ConfigurationCommon” and “tdd-UL-DL-ConfigurationDedicated” (if set).

[0305] C-2. Apply priority based on duration

[0306] The UE needs to receive the minimum SS / PBCH required to properly perform cell measurements. However, if there is overlap between the transmission symbols of the UL channel / signal and the SS / PBCH transmission symbols of the UE, if the UE performs UL transmission, the UE may perform UL transmission during the SS / PBCH transmission duration without continuously receiving the SS / PBCH, resulting in the UE not receiving enough SS / PBCH for measurement.

[0307] In view of this, it is necessary to define the following time resources, which do not give priority to the UE's uplink transmission when the SS / PBCH collides with the UL transmission symbols, so that measurements can be performed through the SS / PBCH.

[0308] In the present disclosure, when the transmission symbol resource of the UL channel / signal overlaps with the transmission symbol resource of the SS / PBCH, it is proposed that the UE performs the transmission of the UL channel / signal, but does not perform the transmission of the UL channel / signal as before during a specific time period. The specific time period may be as follows.

[0309] Method 1. The SS / PBCH transmission time resource for the SS / PBCH index that the UE should perform measurement or should prioritize over UL transmission may be the same as a specific duration. At this time, the SS / PBCH index that the UE should perform measurement or should prioritize over UL transmission may be determined as follows.

[0310] Option 1. The base station may set the UE with the SS / PBCH index on which measurement should be performed or which should be prioritized over UL transmission.

[0311] Option 2. The SS / PBCH index for which measurement should be performed or which should be prioritized over UL transmission may mean the SSB index for which the UE is set to perform CSI measurement through "CSI-SSB-ResourceSet" in "CSI-MeasConfig".

[0312] Method 2: The time resources at which the UE should perform measurement or should be prioritized over UL transmission may be set by the base station. These configurations may be similar to existing SMTC or measurement gap configurations.

[0313] Method 3: When the transmission symbol of the UL channel / signal overlaps with the transmission symbol of the SS / PBCH, the base station may set / instruct the UE whether to perform UL transmission. This information may be set semi-statically and / or may be dynamically indicated by UL authorization or the like.

[0314] When these configurations / instructions instruct the UE to give priority to UL transmission, the UE performs UL transmission when the transmission symbols of the UL channel / signal overlap with the transmission symbols of the SS / PBCH, and does not perform UL transmission otherwise.

[0315] Fig.16 An operation method of a UE in a wireless communication system is illustrated.

[0316] Reference Fig.16 , when an uplink channel transmission symbol overlaps with a synchronization signal / physical broadcast channel (SS / PBCH) reception symbol in a specific time slot including a plurality of symbols in the time domain, the UE determines whether to perform uplink channel transmission in the specific time slot (S161).

[0317] The UE includes the specific time slot in available time slots for uplink channel transmission based on its determination to perform uplink channel transmission (S162).

[0318] Whether to perform uplink channel transmission in the specific time slot may be determined by at least one of the above-mentioned section A or section B.

[0319] For example, the specific time slot may be a half-duplex (HD) time slot among an HD time slot operating in a HD mode and an FD time slot operating in a full-duplex (FD) mode.

[0320] At this time, when the uplink channel transmission symbol and the SS / PBCH reception symbol (from the perspective of the base station, the SS / PBCH reception symbol is the symbol for transmitting SS / PBCH, and therefore it may be referred to as the SS / PBCH transmission symbol throughout this specification) overlap in a specific symbol in a specific time slot, if the first frequency resource used for uplink channel transmission and the second frequency resource used for SS / PBCH reception do not overlap in the specific symbol, uplink channel transmission is performed in the specific symbol and SS / PBCH reception is not performed (SS / PBCH reception is skipped).

[0321] If an uplink channel transmission symbol overlaps with an SS / PBCH reception symbol in a specific symbol in a specific time slot, and if a first frequency resource used for uplink channel transmission overlaps with a second frequency resource used for SS / PBCH reception in a specific symbol, uplink channel transmission is not performed in the specific symbol, and SS / PBCH reception is performed.

[0322] According to the implementation (method 1 of the above section C-2), SS / PBCH index information for a specific SS / PBCH index that should be received prior to uplink transmission can be further received. If the index of the SS / PBCH to be received in a specific time slot is a specific SS / PBCH index, and if the uplink channel transmission symbol and the SS / PBCH reception symbol overlap in the specific time slot, the SS / PBCH with the specific SS / PBCH index is received without performing uplink channel transmission.

[0323] According to an implementation (method 2 of the above section C-2), it is possible to additionally receive time resource information for a specific time resource for which measurement should be performed in priority to uplink transmission. In this case, if the uplink channel transmission symbol overlaps with the SS / PBCH reception symbol in the specific time resource, the SS / PBCH is received without performing uplink channel transmission.

[0324] According to the implementation manner (method 3 of the above section C-2), when the uplink channel transmission symbol overlaps with the SS / PBCH reception symbol, the UE may also receive a configuration message notifying whether to perform uplink transmission.

[0325] In some embodiments, the UE may receive a higher layer signal including a field indicating whether PUSCH repetition based on available slot count is enabled. The higher layer signal may be, for example, a PUSCH configuration message (PUSCH-Config) for configuring UE-specific PUSCH parameters applicable to a specific BWP.

[0326] The following table is an example of a high-level signal.

[0327] [Table 6]

[0328]

[0329]

[0330] 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.

[0331] Fig.17 UE operation according to the existing standard specification in a time resource operating in half-duplex (HD) is illustrated.

[0332] 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 time domain in the specific time slot, the UE excludes the time slot from available time slots (available time slot count) for PUSCH repetition transmission.

[0333] Fig.18 Illustrated based on Fig.16 The method described in UE operates in FD (full duplex) time slot.

[0334] Reference Fig.18 , the UE may receive SS / PBCH index information notifying a specific SS / PBCH index (e.g., SSB#2) that should be received prior to uplink transmission.

[0335] In FD slot #1, when viewed from the time domain, the PUSCH transmission symbol partially overlaps with the SSB #1 reception symbol, but when viewed from the frequency domain, the PUSCH transmission resource is included in the semi-statically configured UL resources (uplink subband resources), and the SSB #1 reception resource is included in the DL resources (downlink subband resources), so they do not overlap with each other. In addition, SSB #1 does not correspond to a specific SS / PBCH index (e.g., SSB #2) that should be received in priority to uplink transmission. Therefore, the UE determines FD slot #1 as an available slot for PUSCH repeated transmission (counts the available slots) and performs uplink transmission (e.g., PUSCH transmission).

[0336] In FD slot #2, when viewed from the time domain, the PUSCH transmission symbol partially overlaps with the SSB #2 reception symbol, but when viewed from the frequency domain, the PUSCH transmission resources are included in the semi-statically configured UL resources (uplink subband resources), and the SSB #2 reception resources are included in the DL resources (downlink subband resources), so they do not overlap with each other. However, unlike FD slot #1, SSB #2 corresponds to a specific SS / PBCH index that should be received in preference to uplink transmission. Therefore, the UE does not determine FD slot #2 as an available slot for repeated PUSCH transmission (not counted as an available slot). And, it performs SSB reception in FD slot #2 without performing uplink transmission (e.g., PUSCH transmission).

[0337] In FD slot #3, in the time domain, the PUSCH transmission symbol partially overlaps with the reception symbol of SSB #N, and in the frequency domain, the PUSCH transmission resource partially overlaps with the reception resource of SSB #N. In this case, FD slot #3 is excluded from the available slots for PUSCH repeated transmission (excluded from the available slot count), and SSB reception is performed without performing uplink transmission (e.g., PUSCH transmission).

[0338] Fig.19 Demonstrates execution Fig.16 The specific signaling process between the base station and the UE of the method described in.

[0339] Reference Fig.19 , the base station sends a configuration message for semi-statically setting FD resources to the UE (S191).

[0340] The base station provides the UE with SSB resource configuration (which may include SS / PBCH index information indicating a specific SS / PBCH index that should be received with priority over uplink transmission) (S192).

[0341] The base station sets PUSCH transmission resources for the UE (S193). For example, the PUSCH transmission resources may be set through a combination of DCI, RRC message and DCI.

[0342] When the uplink channel transmission symbol overlaps with the synchronization signal / physical broadcast channel (SS / PBCH) reception symbol in a specific time slot including a plurality of symbols in the time domain, the UE determines whether to perform uplink channel transmission in the specific time slot (S194). If it is determined that the above-mentioned uplink channel transmission is to be performed, the specific time slot is included in the available time slots for the above-mentioned uplink channel transmission (S195).

[0343] The process Figures 16 to 18 Described in detail in.

[0344] The UE performs PUSCH repetition transmission in an available time slot (S196).

[0345] According to the method disclosed in the present invention, when the base station transmits SS / PBCH within the FD operation time resource (e.g., a specific time slot), the UE can perform uplink transmission if a specific condition is met. That is, PUSCH / PUCCH repeated transmission can be performed based on the available time slots in the specific time slot. Therefore, the waiting time for PUSCH / PUCCH repeated transmission can be reduced.

[0346] From the perspective of the base station, even if the SS / PBCH is transmitted in the time resources performing the FD operation, the UE's uplink transmission can be received. In addition, the UE can maintain the measurement / detection performance through the SS / PBCH.

[0347] C-3. Apply priority based on UL channel / signal

[0348] When the transmission symbol resources of various UL channels / signals transmitted by the UE overlap with the transmission symbol resources of SS / PBCH, the transmission of the UL channel / signal can be performed only for a specific UL signal / channel. That is, priority is applied to a specific UL channel / signal, and priority is not applied to the remaining UL channels / signals (i.e., if the transmission symbol resources of the UL channel / signal overlap with the transmission symbol resources of SS / PBCH, UL transmission cannot be performed (UL transmission can be skipped)). The above-mentioned specific UL signal / channel can be as follows.

[0349] Method 1. UL channels / signals dynamically scheduled via DL / UL grants.

[0350] It is desirable to set the semi-static UL transmission to avoid the transmission resources of SS / PBCH. In the case of dynamic UL transmission, scheduling is generally performed to avoid SS / PBCH transmission resources, but in the case of emergency transmission, scheduling may be required to perform UL transmission even if it overlaps with SS / PBCH transmission resources.

[0351] Method 2: UL channel / signal semi-statically set by the higher layer. The base station can schedule dynamic UL transmission to avoid SS / PBCH transmission resources, but in the case of semi-static transmission, it may be difficult to always set the transmission resources to avoid SS / PBCH transmission resources. Therefore, a conflict may occur between the semi-statically scheduled UL channel / signal and the SS / PBCH transmission resources. In this case, the semi-statically scheduled UL transmission needs to be given priority.

[0352] Fig. 20 A wireless device applied to this specification is exemplified.

[0353] 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).

[0354] 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 whether to perform uplink channel transmission in a specific time slot based on the overlap of an uplink channel transmission symbol with a synchronization signal / physical broadcast channel (SS / PBCH) reception symbol in the specific time slot, the specific time slot including multiple symbols in the time domain, and includes the specific time slot in available time slots for uplink channel transmission based on the determination that the uplink channel transmission is to be performed.

[0355] 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 configuration message to a user equipment (UE) based on the overlap of the UE's uplink channel transmission symbol and the base station's synchronization signal / physical broadcast channel (SS / PBCH) transmission symbol in a specific time resource. The configuration message notifies the UE to perform uplink transmission, and based on the configuration message, performs reception of uplink transmission from the UE and transmission of SS / PBCH in the specific time resource.

[0356] 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.

[0357] 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.

[0358] That is, at least one computer readable medium (CRM) has instructions to be executed by at least one processor to perform operations, the operations including: determining whether to perform uplink channel transmission in a specific time slot based on the overlap of uplink channel transmission symbols with synchronization signal / physical broadcast channel (SS / PBCH) reception symbols in the specific time slot, the specific time slot including multiple symbols in the time domain, and including the specific time slot in the available time slots for uplink channel transmission based on determining that uplink channel transmission is to be performed.

[0359] 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.

[0360] 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.

[0361] 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.

[0362] Fig.21 An example of the structure of the signal processing module is shown in FIG. Here, the signal processing can be performed in Fig. 20 is executed in processors 102 and 202.

[0363] 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.

[0364] 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.

[0365] 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.

[0366] 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.

[0367] 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.

[0368] 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.

[0369] 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.

[0370] 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.

[0371] 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.

[0372] 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.

[0373] The complex-valued modulation symbols may be mapped to one or more transmission layers by a layer mapper 403 .

[0374] 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.

[0375] 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.

[0376] The resource block mapper 405 may allocate complex-valued modulation symbols to appropriate subcarriers and multiplex the complex-valued modulation symbols according to users.

[0377] 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.

[0378] 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.

[0379] Fig.23 An example of a wireless communication device according to an implementation example of the present disclosure is illustrated.

[0380] 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.

[0381] The processor 2310 may implement the functions, processes, and methods described in this specification. Fig.23 Processor 2310 in Fig.23 The memory 2330 may be Fig. 20 Processors 102 and 202 in.

[0382] 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.

[0383] 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.

[0384] 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.

[0385] 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.

[0386] 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.

[0387] Fig.24 An example of a processor 2000 is shown.

[0388] 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.

[0389] Fig.25 An example of a processor 3000 is shown.

[0390] 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.

[0391] Fig.26 Another example of a wireless device is shown.

[0392] 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 .

[0393] 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.

[0394] 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.

[0395] 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.

[0396] 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.

[0397] 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.

[0398] 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).

[0399] 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.

[0400] 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.

[0401] 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.

[0402] Fig.29 A communication system 1 applied to the present specification is shown.

[0403] 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.

[0404] 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.

[0405] 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.

[0406] 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.

[0407] 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 7 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).

[0408] [Table 7]

[0409] Frequency range specification Corresponding frequency range Subcarrier Spacing (SCS) FR1 450MHz to 6000MHz 15, 30, 60kHz FR2 24250MHz to 52600MHz 60, 120, 240kHz

[0410] As described above, the value of the frequency range in the NR system may be changed. For example, as shown below in Table 8, 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 may be used for a variety of purposes, for example, an unlicensed frequency band for vehicle-specific communications (e.g., autonomous driving).

[0411] [Table 8]

[0412] Frequency range specification Corresponding frequency range Subcarrier Spacing (SCS) FR1 410MHz to 7125MHz 15, 30, 60kHz FR2 24250MHz to 52600MHz 60, 120, 240kHz

[0413] 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 whether to perform uplink channel transmission in a specific time slot based on an uplink channel transmission symbol overlapping a synchronization signal / physical broadcast channel SS / PBCH reception symbol in the specific time slot, the specific time slot including a plurality of symbols in the time domain; and Based on determining that the uplink channel transmission is to be performed, the specific time slot is included in available time slots for the uplink channel transmission.

2. The method according to claim 1, wherein: The specific time slot is a full-duplex FD time slot among a half-duplex HD time slot operating in half-duplex and a full-duplex FD time slot operating in full-duplex.

3. The method according to claim 1, wherein: Based on that the uplink channel transmission symbol overlaps with the SS / PBCH reception symbol in a specific symbol in the specific time slot, and based on that the first frequency resource used for the uplink channel transmission and the second frequency resource used for SS / PBCH reception do not overlap in the specific symbol, the uplink channel transmission is performed in the specific symbol.

4. The method according to claim 3, wherein: The SS / PBCH reception is skipped in the specific symbol.

5. The method according to claim 1, wherein: Based on that the uplink channel transmission symbol overlaps with the SS / PBCH reception symbol in the specific time slot, and based on that the first frequency resource used for the uplink channel transmission overlaps with the second frequency resource used for SS / PBCH reception in the specific symbol, the uplink channel transmission is skipped in the specific symbol.

6. The method according to claim 5, wherein: The SS / PBCH reception is performed in the specific symbol.

7. The method according to claim 1, wherein: Based on the fact that the uplink channel transmission symbol and the SS / PBCH reception symbol do not overlap in the specific time slot, and based on the fact that there is no switching time required by the UE between the uplink channel transmission symbol and the SS / PBCH reception symbol, the UE receives SS / PBCH without performing uplink transmission.

8. The method according to claim 1, further comprising the steps of: SS / PBCH index information is received, the SS / PBCH index information notifying a specific SS / PBCH index that should be received prior to uplink transmission.

9. The method according to claim 8, wherein: Based on that the index of the SS / PBCH to be received in the specific time slot is the specific SS / PBCH index, and based on that the uplink channel transmission symbol overlaps with the SS / PBCH reception symbol in the specific time slot, the UE receives the SS / PBCH with the specific SS / PBCH index without performing the uplink channel transmission.

10. The method according to claim 1, further comprising the steps of: Receiving time resource information for a specific time resource should precede uplink transmission to perform measurements on the specific time resource.

11. The method according to claim 10, wherein: Based on the uplink channel transmission symbol overlapping with the SS / PBCH reception symbol in the specific time resource, the UE receives the SS / PBCH without performing the uplink channel transmission.

12. The method according to claim 1, further comprising the steps of: A configuration message is received based on the overlap of the uplink channel transmission symbol with the SS / PBCH reception symbol, the configuration message notifying whether to perform uplink transmission.

13. 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: Determine whether to perform uplink channel transmission in a specific time slot based on an uplink channel transmission symbol overlapping with a synchronization signal / physical broadcast channel SS / PBCH reception symbol in the specific time slot, the specific time slot including a plurality of symbols in the time domain; and Based on determining that the uplink channel transmission is to be performed, the specific time slot is included in available time slots for the uplink channel transmission.

14. 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 suitable for: Determine whether to perform uplink channel transmission in a specific time slot based on an uplink channel transmission symbol overlapping with a synchronization signal / physical broadcast channel SS / PBCH reception symbol in the specific time slot, the specific time slot including a plurality of symbols in the time domain; and Based on determining that the uplink channel transmission is to be performed, the specific time slot is included in available time slots for the uplink channel transmission.

15. At least one computer readable medium (CRM), the at least one CRM having instructions to be executed by at least one processor to perform operations comprising: Determining whether to perform uplink channel transmission in a specific time slot based on an uplink channel transmission symbol overlapping a synchronization signal / physical broadcast channel SS / PBCH reception symbol in the specific time slot, the specific time slot including a plurality of symbols in the time domain; and Based on determining that the uplink channel transmission is to be performed, the specific time slot is included in available time slots for the uplink channel transmission.

16. A method for operating a base station in a wireless communication system, the method comprising the steps of: Sending a configuration message to the user equipment UE based on that an uplink channel transmission symbol of the UE overlaps with a synchronization signal / physical broadcast channel SS / PBCH transmission symbol of the base station in a specific time resource, wherein the configuration message notifies the UE to perform uplink transmission; and Both reception of the uplink transmission from the UE and transmission of SS / PBCH are performed in the specific time resource based on the configuration message.

17. 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 configuration message to the user equipment UE based on that an uplink channel transmission symbol of the UE overlaps with a synchronization signal / physical broadcast channel SS / PBCH transmission symbol of the base station in a specific time resource, wherein the configuration message notifies the UE to perform uplink transmission; and Both reception of the uplink transmission from the UE and transmission of SS / PBCH are performed in the specific time resource based on the configuration message.

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