Method and apparatus for transmitting and receiving signals in a wireless communication system

Abstract

A method and apparatus for transmitting and receiving a signal in a wireless communication system according to an embodiment of the present invention are provided, the method comprising the following steps: receiving a DCI for scheduling a PUSCH; and transmitting a PUSCH based on the DCI. The FDRA field in the DCI includes K bits of LSB, and the K bits of LSB include information about RB sets. Based on the fact that the number N of RB sets set in the current active BWP is different from the number M of RB sets set in a specific BWP, the K bits are converted to L bits.

Description

Technical Field

[0001] The present disclosure relates to a method and an apparatus for use in a wireless communication system. Background Art

[0002] Generally, wireless communication systems are developing to cover a wide range in various ways to provide communication services such as audio communication services, data communication services, etc. Wireless communication is a multiple access system that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power, etc.). For example, the multiple access system may include one of a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, a single carrier frequency division multiple access (SC-FDMA) system, etc. Summary of the invention

[0003] Technical issues

[0004] An object of the present disclosure is to provide a method and apparatus for efficiently transmitting an uplink channel in a wireless communication system.

[0005] Those skilled in the art will understand that the objects that can be achieved by the present disclosure are not limited to those specifically described above, and the above and other objects that can be achieved by the present disclosure will be more clearly understood from the following detailed description.

[0006] Technical Solution

[0007] The present disclosure provides a method and apparatus for transmitting and receiving signals in a wireless communication system.

[0008] According to one aspect of the present disclosure, a method for transmitting and receiving signals by a user equipment (UE) in a wireless communication system may include the following steps: receiving downlink control information (DCI); and transmitting a physical uplink shared channel (PUSCH) based on the DCI. The PUSCH may be transmitted in a specific bandwidth part (BWP) different from a currently active BWP based on the DCI. A frequency domain resource assignment (FDRA) field in the DCI may include K least significant bits (LSBs) containing information about a resource block (RB) set. Based on the fact that the number N of RB sets configured in the currently active BWP is different from the number M of RB sets configured in the specific BWP, the K bits may be changed to L bits.

[0009] According to another aspect of the present disclosure, a communication device (UE) for sending and receiving signals in a wireless communication system may include at least one transceiver, at least one processor, and at least one memory operatively connected to the at least one processor and storing instructions, wherein the instructions, when executed, cause the at least one processor to perform specific operations. The specific operations may include: receiving DCI; and sending PUSCH based on DCI. PUSCH may be sent in a specific BWP different from the currently active BWP based on DCI. The FDRA field in the DCI may include a KLSB containing information about an RB set. Based on the fact that the number N of RB sets configured in the currently active BWP is different from the number M of RB sets configured in the specific BWP, the K bit may be changed to an L bit.

[0010] According to another aspect of the present disclosure, a device for a UE may include at least one processor and at least one computer memory operatively connected to the at least one processor and storing instructions, the instructions causing the at least one processor to perform operations when executed. The operations may include: receiving DCI; and sending PUSCH based on the DCI. The PUSCH may be sent in a specific BWP different from the current active BWP based on the DCI. The FDRA field in the DCI may include K LSBs containing information about RB sets. Based on the number N of RB sets configured in the current active BWP being different from the number M of RB sets configured in the specific BWP, the K bit may be changed to L bits.

[0011] According to another aspect of the present disclosure, a computer-readable storage medium including at least one computer program that causes at least one processor to perform operations may be provided. The operations may include: receiving DCI; and sending PUSCH based on the DCI. PUSCH may be sent in a specific BWP different from the current active BWP based on the DCI. The FDRA field in the DCI may include K LSBs containing information about RB sets. Based on the number N of RB sets configured in the current active BWP being different from the number M of RB sets configured in the specific BWP, the K bit may be changed to L bits.

[0012] In these methods and apparatuses, based on N being greater than M, K bits may be reduced to L bits by truncating L most significant bits (MSBs) among the K bits.

[0013] In these methods and apparatuses, based on N being less than M, K bits may be increased to L bits by padding zeros before K bits.

[0014] In these methods and apparatuses, based on the L bit, an RB set may be determined, and after performing a channel access procedure (CAP) on the RB set, a PUSCH may be transmitted.

[0015] In these methods and apparatuses, the FDRA field may include K bits and an MSB including information about interlace allocation, and the PUSCH may be transmitted in the interlace based on the information about the interlace allocation.

[0016] The communication device may include an autonomous driving vehicle that communicates with at least a UE, a network, and another autonomous driving vehicle other than the communication device.

[0017] The above aspects of the present disclosure are only some preferred embodiments of the present disclosure, and those skilled in the art may deduce and understand various embodiments reflecting the technical features of the present disclosure from the following detailed description of the present disclosure.

[0018] Beneficial Effects

[0019] According to the embodiments of the present disclosure, a communication device may transmit an uplink channel more efficiently in a manner different from that of the prior art.

[0020] Those skilled in the art will appreciate that the effects that can be achieved using the present disclosure are not limited to those specifically described above, and other advantages of the present disclosure will be more clearly understood from the following detailed description in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shows the radio frame structure.

[0022] Figure 2 The resource grid is shown during the duration of a time slot.

[0023] Figure 3 A self-contained slot structure is shown.

[0024] Figure 4 An acknowledgement / negative acknowledgement (ACK / NACK) transmission process is shown.

[0025] Figure 5 A wireless communication system supporting a license-free frequency band is shown.

[0026] Figure 6 An exemplary method of occupying resources in an unlicensed frequency band is shown.

[0027] Figure 7 and Figure 8 is a flow chart illustrating a channel access procedure (CAP) for signal transmission in a license-exempt band.

[0028] Fig. 9 Resource block (RB) interleaving is shown.

[0029] Figures 10 to 16 is a diagram illustrating uplink (UL) channel transmission according to an embodiment of the present disclosure.

[0030] Figures 17 to 20 An apparatus according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0031] The following technologies may be used in various wireless access systems such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc. CDMA may be implemented as a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA may be implemented as a radio technology such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA may be implemented as a radio technology such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wireless Fidelity (WiFi)), IEEE802.16 (Worldwide Interoperability for Microwave Access (WiMAX)), IEEE 802.20, Evolved UTRA (E-UTRA), etc. UTRA is part of Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is a part of Evolved UMTS (E-UMTS) using E-UTRA, and LTE-advanced (LTE-A) is an evolution of 3GPP LTE. 3GPP New Radio or New Radio Access Technology (NR) is an evolved version of 3GPP LTE / LTE-A.

[0032] For clarity of description, the present disclosure will be described in the context of 3GPP communication systems (e.g., LTE and NR), which should not be construed as limiting the spirit of the present disclosure. LTE refers to technology beyond 3GPP TS 36.xxx version 8. Specifically, LTE technology beyond 3GPP TS 36.xxx version 10 is called LTE-A, and LTE technology beyond 3GPP TS 36.xxx version 13 is called LTE-A pro. 3GPP NR is a technology beyond 3GPP TS 38.xxx version 15. LTE / NR may be referred to as a 3GPP system. "xxx" specifies a technical specification number. LTE / NR may be collectively referred to as a 3GPP system. Background technology, terms, abbreviations, etc. as used herein refer to technical specifications published before the present disclosure. For example, the following documents may be referenced.

[0033] 3GPP NR

[0034] -38.211: Physical channels and modulation

[0035] -38.212: Multiplexing and channel coding

[0036] -38.213: Physical layer procedures for control

[0037] -38.214: Physical layer procedures for data

[0038] -38.300: NR and NG-RAN general description

[0039] -38.331: Radio Resource Control (RRC) protocol specification

[0040] Figure 1 The radio frame structure for NR is shown.

[0041] In NR, UL transmission and DL transmission are configured by frame. Each radio frame has a length of 10ms and is divided into two 5ms half frames. Each half frame is divided into five 1ms subframes. A subframe is divided into one or more time slots, and the number of time slots in a subframe depends on the subcarrier spacing (SCS). Depending on the cyclic prefix (CP), each time slot includes 12 or 14 OFDM (A) symbols. When a normal CP is used, each time slot includes 14 OFDM symbols. When an extended CP is used, each time slot includes 12 OFDM symbols. Symbols may include OFDM symbols (or CP-OFDM symbols) and SC-FDMA symbols (or discrete Fourier transform-extended-OFDM (DFT-s-OFDM) symbols).

[0042] Table 1 exemplarily shows that the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary according to the SCS in the normal CP case.

[0043] [Table 1]

[0044] SCS(15*2^u) <![CDATA[N slot symb ]]> <![CDATA[N frame，u slot ]]> <![CDATA[N subframe，u slot ]]> 15KHz(u=0) 14 10 1 30KHz(u=1) 14 20 2 60KHz(u=2) 14 40 4 120KHz(u=3) 14 80 8 240KHz(u=4) 14 160 16

[0045] *N slot symb : The number of symbols in a time slot

[0046] *N frame，u slot : Number of time slots in a frame

[0047] *N subframe，u slot : Number of time slots in a subframe

[0048] Table 2 shows that the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary according to SCS in the case of extended CP.

[0049] [Table 2]

[0050] SCS(15*2^u) <![CDATA[N slot symb ]]> <![CDATA[N frame，u slot ]]> <![CDATA[N subframe，u slot ]]> 60KHz(u=2) 12 40 4

[0051] In the NR system, different OFDM(A) parameter sets (e.g., SCS, CP length, etc.) may be configured for multiple cells aggregated for one UE. Therefore, the (absolute time) duration of a time resource (e.g., a subframe, a time slot, or a transmission time interval (TTI)) (referred to as a time unit (TU) for convenience) consisting of the same number of symbols may be configured differently between the aggregated cells.

[0052] In NR, various parameter sets (or SCS) can be supported to support various 5th generation (5G) services. For example, for an SCS of 15kHz, wide areas in the traditional cellular band can be supported, while for an SCS of 30kHz or 60kHz, dense urban areas, lower latency, and wide carrier bandwidth can be supported. For an SCS of 60kHz or higher, bandwidths greater than 24.25kHz can be supported to overcome phase noise.

[0053] The NR frequency band may be defined by two types of frequency ranges FR1 and FR2. FR1 and FR2 may be configured as described in Table 3 below. FR2 may be millimeter wave (mmW).

[0054] [Table 3]

[0055] Frequency range specification Corresponding frequency range Subcarrier spacing FR1 450MHz-7125MHz 15, 30, 60kHz FR2 24250MHz-52600MHz 60, 120, 240kHz

[0056] Figure 2 The resource grid during the duration of one time slot is shown.

[0057] A time slot includes multiple symbols in the time domain. For example, a time slot includes 14 symbols in the normal CP case and 12 symbols in the extended CP case. A carrier includes multiple subcarriers in the frequency domain. A resource block (RB) may be defined by multiple (e.g., 12) consecutive subcarriers in the frequency domain. A bandwidth part (BWP) may be defined by multiple consecutive (physical) RBs ((P)RBs) in the frequency domain and corresponds 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 in an active BWP, and only one BWP may be enabled for a UE. Each element in a resource grid may be referred to as a resource element (RE), to which a complex symbol may be mapped.

[0058] In a wireless communication system, a UE receives information from a BS in a downlink (DL), and the UE transmits information to the BS in an uplink (UL). The information exchanged between the BS and the UE includes data and various control information, and there are various physical channels / signals according to the type / purpose of the information exchanged therebetween. A physical channel corresponds to a set of resource elements (REs) that carry information from a higher layer. A physical signal corresponds to a set of REs that are used by the physical layer but do not carry information from a higher layer. The higher layer includes a medium access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, a radio resource control (RRC) layer, and the like.

[0059] DL physical channels include physical broadcast channel (PBCH), physical downlink shared channel (PDSCH) and physical downlink control channel (PDCCH). DL physical signals include DL reference signal (RS), primary synchronization signal (PSS) and secondary synchronization signal (SSS). DL RS includes demodulation reference signal (DM-RS), phase tracking reference signal (PT-RS) and channel state information reference signal (CSI-RS). UL physical channels include physical random access channel (PRACH), physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH). UL physical signals include UL RS. UL RS includes DM-RS, PT-RS and sounding reference signal (SRS).

[0060] Figure 3 Shows the structure of a self-contained time slot.

[0061] In the NR system, a frame has a self-contained structure in which a DL control channel, DL or UL data, a UL control channel, etc. can all be included in one time slot. For example, the first N symbols in a time slot (hereinafter, the DL control region) can be used to send a DL control channel, and the last M symbols in a time slot (hereinafter, the UL control region) can be used to send a UL control channel. N and M are integers greater than or equal to 0. The resource region (hereinafter, the data region) between the DL control region and the UL control region can be used for DL ​​data transmission or UL data transmission. For example, the following configuration can be considered. List the various parts in chronological order.

[0062] In the present disclosure, a base station (BS) may be, for example, a gNode B (gNB).

[0063] UL physical channel / signal

[0064] (1) PUSCH

[0065] The PUSCH may carry UL data (e.g., uplink shared channel (UL-SCH) transport blocks (TBs)) and / or uplink control information (UCI). The PUSCH may be transmitted based on a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform or a discrete Fourier transform spread OFDM (DFT-s-OFDM) waveform. When the PUSCH is transmitted based on a DFT-s-OFDM waveform, the UE may transmit the PUSCH by applying transform precoding. For example, when transform precoding is not allowed (e.g., when transform precoding is disabled), the UE may transmit the PUSCH based on a CP-OFDM waveform. When transform precoding is allowed (e.g., when transform precoding is enabled), the UE may transmit the PUSCH based on a CP-OFDM waveform or a DFT-s-OFDM waveform. PUSCH transmissions may be dynamically scheduled by PDCCH (dynamic scheduling) or semi-statically scheduled by higher layer signaling (e.g., RRC signaling) (and / or layer 1 (L1) signaling (e.g., PDCCH)) (configured scheduling (CS)). Therefore, in dynamic scheduling, PUSCH transmissions may be associated with PDCCH, while in CS, PUSCH transmissions may not be associated with PDCCH. CS may include PUSCH transmissions based on type 1 configuration grants (CGs) and PUSCH transmissions based on type 2CGs. For type 1CG, all parameters for PUSCH transmissions may be signaled by higher layers. For type 2CG, some parameters for PUSCH transmissions may be signaled by higher layers, and the rest may be signaled via PDCCH. Basically, in CS, PUSCH transmissions may not be associated with PDCCH.

[0066] (2) PUCCH

[0067] PUCCH can carry UCI. UCI includes the following information.

[0068] - Scheduling Request (SR): SR is information for requesting UL-SCH resources.

[0069] - Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK): HARQ-ACK is a signal in response to the reception of a DL signal (e.g., PDSCH, SPS release PDCCH, etc.). The HARQ-ACK response may include positive ACK (ACK), negative ACK (NACK), DTX (discontinuous transmission), or NACK / DTX. HARQ-ACK may be used interchangeably with A / N, ACK / NACK, HARQ-ACK / NACK, etc. HARQ-ACK may be generated based on TB / CBG.

[0070] - Channel State Information (CSI): CSI is feedback information about a DL channel. CSI includes a channel quality indicator (CQI), a rank indicator (RI), a precoding matrix indicator (PMI), a precoding type indicator (PTI), etc.

[0071] Table 4 shows the PUCCH format. The PUCCH format may be classified according to UCI payload size / transmission length (e.g., the number of symbols included in the PUCCH resource) and / or transmission structure. The PUCCH format may be classified into short PUCCH formats (PUCCH formats 0 and 2) and long PUCCH formats (PUCCH formats 1, 3, and 4) according to the transmission length.

[0072] [Table 4]

[0073]

[0074] (0)PUCCH format 0 (PF0)

[0075] - Supported UCI payload size: up to K bits (e.g., K=2)

[0076] -Number of OFDM symbols included in one PUCCH: 1 to X symbols (eg, X=2)

[0077] -Transmission structure: Only UCI signal is configured without DM-RS, and UCI status is transmitted by selecting and transmitting one of multiple sequences.

[0078] (1) PUCCH format 1 (PF1)

[0079] - Supported UCI payload size: up to K bits (e.g., K=2)

[0080] -Number of OFDM symbols included in one PUCCH: Y to Z symbols (e.g., Y=4 and Z=14)

[0081] -Transmission structure: UCI and DM-RS are configured in different OFDM symbols based on time division multiplexing (TDM). For UCI, a specific sequence is multiplied by the modulation symbol (e.g., QPSK symbol). Cyclic shift / orthogonal cover code (CS / OCC) is applied to both UCI and DM-RS to support code division multiplexing (CDM) between multiple PUCCH resources (compliant with PUCCH format 1) (in the same RB).

[0082] (2) PUCCH format 2 (PF2)

[0083] - Supportable UCI payload size: more than K bits (e.g., K=2)

[0084] -Number of OFDM symbols included in one PUCCH: 1 to X symbols (eg, X=2)

[0085] - Transmission structure: UCI and DMRS (DM-RS) are configured / mapped to the same symbol based on frequency division multiplexing (FDM), and coded UCI bits are transmitted by applying only inverse fast Fourier transform (IFFT) thereto without DFT.

[0086] (3) PUCCH format 3 (PF3)

[0087] - Supportable UCI payload size: more than K bits (e.g., K=2)

[0088] -Number of OFDM symbols included in one PUCCH: Y to Z symbols (e.g., Y=4 and Z=14)

[0089] -Transmission structure: UCI and DMRS are configured / mapped to different symbols based on TDM. The coded UCI bits are transmitted by applying DFT to them. To support multiplexing between multiple UEs, OCC is applied to UCI, and CS (or interleaved frequency division multiplexing (IFDM) mapping) is applied to DM-RS before DFT.

[0090] (4) PUCCH format 4 (PF4)

[0091] - Supportable UCI payload size: more than K bits (e.g., K=2)

[0092] -Number of OFDM symbols included in one PUCCH: Y to Z symbols (e.g., Y=4 and Z=14)

[0093] - Transmission structure: UCI and DMRS are configured / mapped to different symbols based on TDM. DFT is applied to the coded UCI bits without multiplexing between UEs.

[0094] Figure 4 ACK / NACK transmission processing is shown. Figure 4 , the UE may detect the PDCCH in time slot #n. The PDCCH includes DL scheduling information (e.g., DCI format 1_0 or DCI format 1_1). The PDCCH indicates DL assignment to PDSCH offset K0 and PDSCH to HARQ-ACK report offset K1. For example, DCI format 1_0 or DCI format 1_1 may include the following information.

[0095] - Frequency domain resource assignment: indicates the set of RBs assigned to PDSCH

[0096] - Time domain resource assignment: Indicates K0 and the starting position (e.g., OFDM symbol index) and length (e.g., number of OFDM symbols) of the PDSCH in the time slot

[0097] -PDSCH to HARQ_feedback timing indicator: Indicates K1

[0098] After receiving PDSCH in time slot #(n+K0) according to the scheduling information of time slot #n, the UE may send UCI on the PUCCH in time slot #(n+K1). The UCI includes a HARQ-ACK response to the PDSCH. In the case where the PDSCH is configured to carry a maximum of one TB, the HARQ-ACK response may be configured in one bit. In the case where the PDSCH is configured to carry up to two TBs, the HARQ-ACK response may be configured in two bits if spatial bundling is not configured, and in one bit if spatial bundling is configured. When time slot #(n+K1) is designated as the HARQ-ACK transmission timing of multiple PDSCHs, the UCI sent in time slot #(n+K1) includes HARQ-ACK responses to multiple PDSCHs.

[0099] 1. Wireless communication systems supporting unlicensed frequency bands

[0100] Figure 5 An exemplary wireless communication system supporting unlicensed frequency bands suitable for use with the present disclosure is shown.

[0101] In the following description, a cell operating in a licensed band (L band) is defined as an L cell, and a carrier of the L cell is defined as (DL / UL) LCC. A cell operating in an unlicensed band (U band) is defined as a U cell, and a carrier of the U cell is defined as (DL / UL) UCC. A carrier / carrier frequency of a cell may refer to an operating frequency (e.g., a center frequency) of the cell. A cell / carrier (e.g., CC) is generally referred to as a cell.

[0102] When BS and UE Figure 5 When sending and receiving signals on the LCC and UCC of carrier aggregation as shown in (a), the LCC and UCC can be configured as a primary CC (PCC) and a secondary CC (SCC), respectively. Figure 5 As shown in (b), signals are sent and received on one UCC or on a plurality of carrier aggregated UCCs. In other words, the BS and UE can send and receive signals only on the UCC without using any LCC. For SA operation, PRACH, PUCCH, PUSCH, and SRS transmissions can be supported on the UCell.

[0103] The signal transmission and reception operations in the unlicensed band as described in the present disclosure are applicable to the above-mentioned deployment scenarios (unless otherwise specified).

[0104] Unless otherwise stated, the following definitions apply to the following terms used in this disclosure.

[0105] - Channel: A carrier or a portion of a carrier consisting of a set of contiguous RBs that perform a channel access procedure (CAP) in a shared spectrum.

[0106] - Channel Access Procedure (CAP): A procedure to evaluate channel availability based on sensing before signal transmission in order to determine whether other communication nodes are using the channel. The basic sensing unit is a duration of T sl＝ The BS or UE senses the time slot during the sensing time slot duration. When the power detected within at least 4us during the sensing time slot duration is less than the energy detection threshold X thresh The sensing time slot duration is T sl is considered idle. Otherwise, the sensing time slot duration T sl CAP can also be called Listen Before Talk (LBT).

[0107] - Channel occupancy: Transmissions from BS / UE on the channel after CAP

[0108] - Channel Occupancy Time (COT): The total time that a BS / UE and any BS / UE sharing the channel occupancy perform transmissions on the channel after the CAP. With respect to COT determination, if a transmission gap is less than or equal to 25us, the gap duration may be counted into the COT. The COT may be shared for transmissions between a BS and a corresponding UE.

[0109] -DL transmission burst: A set of transmissions from a BS without any gap greater than 16us. Transmissions from a BS separated by gaps greater than 16us are considered separate DL transmission bursts. The BS may perform transmissions after a gap within a DL transmission burst without sensing channel availability.

[0110] -UL transmission burst: A set of transmissions from a UE without any gap greater than 16us. Transmissions from a UE separated by gaps greater than 16us are considered separate UL transmission bursts. A UE may perform transmissions after a gap within a DL transmission burst without sensing channel availability.

[0111] -Discovery burst: A DL transmission burst that includes a set of signals and / or channels that are confined within a window and associated with a duty cycle. A discovery burst may include a transmission initiated by the BS that includes PSS, SSS, and cell-specific RS (CRS), and also includes non-zero power CSI-RS. In an NR system, a discovery burst may include a transmission initiated by the BS that includes at least an SS / PBCH block and also includes a CORESET for scheduling a PDSCH carrying SIB1, a PDSCH carrying SIB1, and / or a PDCCH with non-zero power CSI-RS.

[0112] Figure 6 The resource occupation method in the U band is shown. According to the regional regulations of the U band, the communication node in the U band needs to determine whether the channel is used by other communication nodes before sending a signal. Specifically, the communication node may perform carrier sensing (CS) before sending a signal to check whether other communication nodes perform signal transmission. When other communication nodes do not perform signal transmission, it can be said that the idle channel assessment (CCA) is confirmed. When the CCA threshold is predefined or configured by high-level signaling (e.g., RRC signaling), if the detected channel energy is higher than the CCA threshold, the communication node may determine that the channel is busy. Otherwise, the communication node may determine that the channel is idle. The Wi-Fi standard (802.11ac) specifies a CCA threshold of -62dBm for non-Wi-Fi signals and a CCA threshold of -82dBm for Wi-Fi signals. When it is determined that the channel is idle, the communication node may start signal transmission in UCell. All of the above processes may be referred to as listen-before-talk (LBT) or channel access procedure (CAP). LBT, CAP, and CCA are used interchangeably in this document.

[0113] Specifically, for DL ​​reception / UL transmission in the U band, at least one of the following CAP methods to be described below may be adopted in the wireless communication system according to the present disclosure.

[0114] DL signal transmission method in U band

[0115] The BS may perform one of the following U-band access procedures (eg, CAP) for DL ​​signal transmission in the U-band.

[0116] (1) Type 1 DL CAP method

[0117] In a Type 1 DL CAP, the length of the duration spanned by a sensing slot that is sensed as idle before a transmission may be random. Type 1 DL CAP may be applicable to the following transmissions:

[0118] - a transmission initiated by the BS, comprising (i) a unicast PDSCH with user plane data or (ii) a unicast PDCCH scheduling user plane data in addition to a unicast PDSCH with user plane data, or

[0119] - BS-initiated transmissions, including (i) only discovery bursts or (ii) discovery bursts multiplexed with non-unicast information.

[0120] Figure 7 is a flow chart illustrating a CAP operation performed by a BS to transmit a DL signal in a U band.

[0121] Reference Figure 7 , the BS can sense the channel after a delay of T d Then, if the counter N is zero, the BS may perform transmission (S1234). In this case, the BS may adjust the counter N by sensing the channel during the additional sensing slot duration according to the following steps:

[0122] Step 1) (S1220) BS sets N to N init (N=N init ), where N init is between 0 and CW p Then, proceed to step 4.

[0123] Step 2) (S1240) If N>0 and the BS determines to decrease the counter, the BS sets N to N-1 (N=N-1).

[0124] Step 3) (S1250) The BS senses the channel during the additional sensing time slot duration. If the additional sensing time slot duration is idle (Yes), proceed to Step 4. Otherwise (No), proceed to Step 5.

[0125] Step 4) (S1230) If N=0 (Yes), the BS terminates the CAP (S1232). Otherwise (No), proceed to Step 2.

[0126] Step 5) (S1260) BS senses the channel until the additional delay duration T d A busy sensing time slot is detected within the time slot or an additional delay duration T is added d All time slots are detected as idle.

[0127] Step 6) (S1270) If the additional delay duration T d If the channel is sensed as idle during all time slot durations of (yes), proceed to step 4. Otherwise (no), proceed to step 5.

[0128] Table 5 shows the m applied to CAPp , minimum contention window (CW), maximum CW, maximum channel occupancy time (MCOT), and allowed CW size vary according to the channel access priority category.

[0129] [Table 5]

[0130]

[0131] Delay duration T d Configure in the following order: Duration T f (16us)+m p The duration of the continuous sensing time slot is T sl (9us).T f Including the sensing time slot duration T at the beginning of the 16us duration sl .

[0132] Satisfies the following relationship: CW min,p <=CW p <=CW max,p .CW p Available from CW p =CW min,p Initially configured and updated (CW size update) based on HARQ-ACK feedback (e.g., ACK or NACK) for the previous DL burst (e.g., PDSCH) before step 1. p Can be initialized to CW based on HARQ-ACK feedback for previous DL burst min,p . Alternatively, CW p May be increased to the next highest allowed value or left as is.

[0133] (2) Type 2DL CAP method

[0134] In a Type 2 DL CAP, the length of the duration spanned by a sensing slot sensed as idle before transmission may be determined. Type 2 DL CAPs are classified into Type 2A / 2B / 2C DL CAPs.

[0135] Type 2A DL CAP may be applied to the following transmissions. In Type 2A DL CAP, the BS may transmit the following transmissions at least during the sensing duration T short_dl = Transmission is performed immediately after the channel is sensed as idle within 25us. Here, T short_dl Including duration T f (=16us) and then for a duration of T f After a sensing time slot duration, the duration T f A sensing time slot is included at its beginning.

[0136] - A transmission initiated by the BS, consisting of (i) only a discovery burst or (ii) a discovery burst multiplexed with non-unicast information, or

[0137] - Transmission of the BS after a gap of 25us relative to the UE's transmission within the shared channel occupancy.

[0138] Type 2B DL ​​CAP is applicable to transmissions performed by the BS after a 16us gap relative to the UE's transmission during the shared channel occupancy time. In Type 2B DL ​​CAP, the BS may f = Transmission is performed immediately after the channel is sensed as idle within 16us. f Includes a sensing slot within 9us relative to the end of the duration. Type 2C DL CAP is applicable to transmissions performed by the BS after a maximum of 16us relative to the UE's transmission within the shared channel occupancy time. In Type 2C DL CAP, the BS does not perform channel sensing before performing transmission.

[0139] UL signal transmission method in U band

[0140] The UE may perform Type 1 or Type 2 CAP for UL signal transmission in the U band. Typically, the UE may perform a CAP (e.g., Type 1 or Type 2) configured by the BS for UL signal transmission. For example, a UL grant (e.g., DCI formats 0_0 and 0_1) scheduling PUSCH transmission may include CAP type indication information for the UE.

[0141] (1) Type 1 UL CAP method

[0142] In Type 1 UL CAP, the length of the duration spanned by the sensing slots sensed as idle before transmission is random. Type 1 UL CAP is applicable to the following transmissions.

[0143] -PUSCH / SRS transmission scheduled and / or configured by the BS

[0144] - PUCCH transmissions scheduled and / or configured by the BS

[0145] - Transmissions related to the Random Access Procedure (RAP)

[0146] Figure 8 is a flow chart illustrating CAP operations performed by a UE to send a UL signal.

[0147] Reference Figure 8 , the UE can sense the channel at a delay duration T dThen, if the counter N is zero, the UE may perform transmission (S1534). In this case, the UE may adjust the counter N by sensing the channel during the additional sensing slot duration according to the following steps:

[0148] Step 1) (S1520) UE sets N to N init (N=N init ), where N init is between 0 and CW p Then, proceed to step 4.

[0149] Step 2) (S1540) If N>0 and the UE determines to decrease the counter, the UE sets N to N-1 (N=N-1).

[0150] Step 3) (S1550) The UE senses the channel during the additional sensing time slot duration. If the additional sensing time slot duration is idle (yes), proceed to step 4. Otherwise (no), proceed to step 5.

[0151] Step 4) (S1530) If N=0 (Yes), the UE terminates the CAP (S1532). Otherwise (No), proceed to step 2.

[0152] Step 5) (S1560) The UE senses the channel until the additional delay duration T d A busy sensing time slot is detected within the time slot or an additional delay duration T is added d All time slots are detected as idle.

[0153] Step 6) (S1570) If the additional delay duration T d If the channel is sensed as idle during all time slot durations of (yes), proceed to step 4. Otherwise (no), proceed to step 5.

[0154] Table 6 shows the m applied to CAP p , minimum CW, maximum CW, MCOT and allowed CW size vary according to the channel access priority category.

[0155] [Table 6]

[0156]

[0157] Delay duration T d Configure in the following order: Duration T f (16us)+m p The duration of the continuous sensing time slot is T sl (9us).T f Including the sensing time slot duration T at the beginning of the 16us durationsl .

[0158] Satisfies the following relationship: CW min,p <=CW p <=CW max,p .CW p Available from CW p =CW min,p Initially configured and updated (CW size update) based on explicit / implicit reception response to previous UL burst (e.g., PUSCH) before step 1. p Can be initialized to CW based on explicit / implicit reception response to previous UL burst min,p . Alternatively, CW p May be increased to the next highest allowed value or left as is.

[0159] (2) Type 2 UL CAP method

[0160] In a Type 2 UL CAP, the length of the duration spanned by the sensing slots sensed as idle before transmission may be determined. Type 2 UL CAPs are classified into Type 2A / 2B / 2C UL CAPs. In a Type 2A UL CAP, the UE may determine the length of the duration spanned by the sensing slots sensed as idle before transmission. short_dl = Transmission is performed immediately after the channel is sensed as idle within 25us. Here, T short_dl Including duration T f (=16us) and then for a duration of T f The duration of a sensing slot after that. In Type 2A ULCAP, T f In a Type 2B UL CAP, the UE may include a sensing time slot at its beginning. f = Transmission is performed immediately after the channel is sensed as idle within 16us. In Type 2B UL CAP, T f Included is a sensing slot within 9us relative to the end of the duration. In Type 2C UL CAP, the UE does not perform channel sensing before performing a transmission.

[0161] RB interweaving

[0162] Fig. 9 RB interleaving is shown. In a shared spectrum, considering the provisions on occupied channel bandwidth (OCB) and power spectral density (PSD), a set of non-contiguous RBs (at regular intervals) (or a single RB) in the frequency domain can be defined as a resource unit used / allocated to transmit an UL (physical) channel / signal. For convenience, such a set of non-contiguous RBs is defined as RB interleaving (or interleaving).

[0163] Reference Fig. 9 , multiple RB interlaces (interlaces) may be defined in a frequency bandwidth. Here, the frequency bandwidth may include a (wideband) cell / CC / BWP / RB set, and the RB may include a PRB. For example, interlace #m∈{0,1,...,M-1} may consist of (common) RBs{m,M+m,2M+m,3M+m,...}, where M represents the number of interlaces. A transmitter (e.g., UE) may use one or more interlaces to send a signal / channel. The signal / channel may include a PUCCH or a PUSCH.

[0164] 3. PUCCH transmission in U band

[0165] The above description (NR frame structure, RACH, U-band system, etc.) is applicable to combination with the method proposed in the present disclosure, which will be described later. Alternatively, the description may clarify the technical features of the method proposed in the present disclosure.

[0166] In addition, the PRACH preamble code design method described later may be related to UL transmission, and therefore, these methods may also be applied to the above-mentioned UL signal transmission method in the U-band system. In order to implement the technical concept of the present disclosure in the corresponding system, the terms, expressions and structures in this document may be modified to be suitable for these systems.

[0167] For example, UL transmission based on the following PUCCH transmission method may be performed on an L cell and / or a U cell defined in a U-band system.

[0168] As described above, the Wi-Fi standard (802.11ac) specifies a CCA threshold of -62dBm for non-Wi-Fi signals and a CCA threshold of -82dBm for Wi-Fi signals. In other words, if a station (STA) or access point (AP) of a Wi-Fi system receives a signal at a power of -62dBm or more in a specific frequency band from a device not included in the Wi-Fi system, the STA or AP may not transmit a signal in the specific frequency band.

[0169] In this document, the term "U-band" is used interchangeably with the term "shared spectrum".

[0170] When a specific device (and / or node) sends a signal in a shared spectrum, there may be limitations in terms of PSD. For example, according to the European Telecommunications Standards Institute (ETSI), signal transmission in a specific frequency band needs to meet a PSD of 10dBm / 1MHz. When the SCS is 15kHz, if the PUSCH is sent in 5 PRBs (900kHz), the maximum allowed power of the PUSCH may be about 10dBm. Typically, the maximum power of the UE is 23dBm, and the maximum allowed power of 10dBm is significantly lower than 23dBm. If the UE sends UL at 10dBm, the maximum UL coverage supported by the UE may be reduced. If the UE sends PUCCH in a wide frequency domain (F domain) to increase the transmit power, it may help solve the problem of reduced UL coverage.

[0171] As a rule in shared spectrum, there may be restrictions on OCB. For example, when a particular device sends a signal, the signal may need to occupy at least 80% of the system bandwidth. If the system bandwidth is 20MHz, the signal sent by the particular device may need to occupy more than 16MHz (80% of 20MHz).

[0172] As a PUCCH structure considering PSD and OCB-related regulations, the above-mentioned RB interleaving structure can be used. Table 7 shows the total number of PRBs in the bandwidth of each SCS.

[0173] [Table 7]

[0174]

[0175] Referring to Table 7, when the SCS is 30kHz, the total number of PRBs in the 20MHz bandwidth is 51. It can be considered that 51 PRBs use a total of five interlaces. Each interlace consists of 10 or 11 PRBs. The interval between the PRBs included in each interlace is five PRBs (relative to the starting point). Fig.10 An example of configuring five interleavings at 20MHz in a 30kHz SCS is shown (interleaving index #0 consists of 11 PRBs, and each of interleaving indexes #1 to #4 consists of 10 PRBs). In this case, among the five interleavings, the interleaving that occupies a smaller frequency band when sending and receiving signals and / or channels may also occupy more than 80% of 20MHz. For example, each interleaving with interleaving indexes #1 to #4 also occupies 46 (PRB) * 30 (SCS) * 12 (subcarriers) = 16560kHz, which exceeds 16000kHz (i.e., 80% of 20MHz).

[0176] Referring to Table 7, when the SCS is 15kHz, the total number of PRBs in the 20MHz bandwidth is 106. It can be considered that 106 PRBs use a total of 10 interlaces. Each interlace consists of 10 or 11 PRBs. The interval between the PRBs included in each interlace is 10 PRBs (relative to the starting point). Fig.11 An example of configuring 10 interleavings at 20MHz in a 15kHz SCS is shown (each of the interleaving indices #0 to #5 consists of 11 PRBs, and each of the interleaving indices #6 to #9 consists of 10 PRBs). In this case, among the 10 interleavings, the interleaving that occupies a smaller frequency band while sending and receiving signals and / or channels can also occupy more than 80% of 20MHz. For example, each interleaving with interleaving indices #6 to #9 also occupies 91 (PRB) * 15 (SCS) * 12 (subcarriers) = 16380kHz, which exceeds 16000kHz (i.e., 80% of 20MHz).

[0177] In the NR system, when the UE performs initial access in the U band, the UE may not know the SCS of the SS / PBCH block configured by the BS. Therefore, in order to reduce the complexity of UE implementation, it is possible to limit the UE to use 30kHz SCS when performing initial access in the U band.

[0178] In the legacy NR system, the MIB sent on the PBCH indicates the SCS of CORESET#0 as 15kHz or 30kHz. However, in the NR U-band, the SCS of CORESET#0 is always the same as the SCS of the SS / PBCH block (existing on the same carrier). For example, when the SCS of the SS / PBCH block is 30kHz, the SCS of CORESET#0 becomes 30kHz, and when the SCS of the SS / PBCH block is 15kHz, the SCS of CORESET#0 becomes 15kHz.

[0179] In the legacy NR system, the number of PRBs in CORESET#0 may be indicated by the MIB sent on the PBCH. However, in the NRU band, the number of PRBs in CORESET#0 may be predetermined according to the SCS of CORESET#0. That is, if the SCS of CORESET#0 is 30kHz, the number of PRBs in CORESET#0 may be defined as 48. If the SCS of CORESET#0 is 15kHz, the number of RBs in CORESET#0 may be defined as 96.

[0180] In legacy NR systems, the initial active UL BWP is defined to be equal to the bandwidth of CORESET#0. In U-band, if there are no special restrictions, the UE can operate by assuming that the size of the initial active UL BWP is equal to the number of RBs in CORESET#0 before RRC setup.

[0181] For example, when the SCS of the SS / PBCH block and CORESET#0 is 30kHz, the size of the initial active UL BWP can be 48 PRBs. When the SCS of the SS / PBCH block and CORESET#0 is 15kHz, the size of the initial active UL BWP can be 96 PRBs. Assume Fig.10 The interleaving structure defined in is used as is, if the UE intends to use some interleaving indices to send signals / channels (during the initial access process), the UE may not meet the OCB requirements. In order to meet the OCB requirements, when a specific node sends a signal in the U band, the signal needs to occupy more than 80% of the LBT subband bandwidth. Therefore, when the UE sends a signal / channel in a bandwidth of 20 MHz, the signal needs to occupy a bandwidth of 1.6 MHz or higher to meet the OCB requirements. In addition, a specific node needs to meet the OCB requirements at least once during a specific time window (e.g., one second). In the initial active UL BWP, UL interleaving can be used for / for Msg3 PUSCH and / or A / N PUCCH for Msg4.

[0182] Hereinafter, a method of newly configuring / setting / sending UL interleaving when the predefined interleaving structure does not meet the OCB requirement under the assumption that the (initial) active UL BWP is less than 51 (51 PRBs) at 30kHz SCS and / or less than 106 (106 PRBs) at 15kHz SCS will be described.

[0183] Hereinafter, a UE operation for performing UL transmission based on UL interleaving proposed in the present disclosure will be described.

[0184] (1) First, the UE may receive UL interleaving configuration information for UL transmission from the BS. Here, the UL interleaving configuration information may include a UL interleaving index of a UL interleaving satisfying a defined OCB requirement for each SCS. (2) Second, the UE may determine at least one UL interleaving based on the UL interleaving configuration information. (3) Then, the UE may perform UL transmission to the BS based on the determined at least one UL interleaving.

[0185] More specific details will be described with reference to the following embodiments.

[0186] 3.1. Implementation method 1

[0187] Embodiment 1 relates to a method in which a BS indicates an interleaving index satisfying a specific condition (eg, OCB requirement) while maintaining a predefined interleaving structure. A UE may transmit a signal and / or a channel in the interleaving having the indicated index.

[0188] Specifically, although the above reference Figure 10 to Figure 11 The interleaving structure described in the present invention is different from the interleaving structure described in the present invention, but the BS may set the interleaving that meets the OCB requirement as the available (valid) interleaving in the initial active UL BWP. That is, the BS may set the interleaving index that meets the OCB requirement as the interleaving index available in the initial active UL BWP. In this case, other interleavings that do not meet the OCB requirement may be used by UEs that have already established an RRC connection (only in specific cases where the OCB requirement does not need to be met).

[0189] For example, if the SCS of CORESET#0 is 30kHz, the initial active UL BWP is set to 48 PRBs. If the initial active UL BWP is 48 PRBs, each interlace with index #0, #1 and #2 consists of 10 PRBs, and each interlace with index #3 and #4 consists of 9 PRBs, as shown in FIG. Fig.12 As shown. That is, if the UE uses an interleaving consisting of only 9 PRBs, the UE may transmit signals and / or channels by occupying only 41 (PRB) * 30 (SCS) * 12 (subcarriers) = 14760kHz, which may not meet the OCB requirement. Here, the 41 PRBs may be calculated as follows. For an interleaving consisting of 9 PRBs, since the interval between the PRBs is five PRBs (relative to the starting point), one PRB may be included in the interleaving for every five PRBs. Assuming that the first PRB (e.g., PRB index #3) of an interleaving consisting of 9 PRBs is included in the interleaving with index #3, the total number of PRBs included in the interleaving with index #3 among the first 40 consecutive PRBs is 8. That is, PRBs with indices #3, #8, #13, #18, #23, #28, #33, and #38 are included in the interleaving with index #3. A PRB (i.e., PRB index #43) that is five PRBs away from the PRB with index #38 is also included in the interlace with index #3. Therefore, the frequency band occupied by the interlace with index #3 is a total of 41 PRBs: PRBs with indices #3 to #43. If the number of PRBs included in the interlace with index #3 is 10, the next PRB (i.e., PRB index #48) needs to be included, which is a value outside the bandwidth size of the initial active UL BWP. Therefore, the interlace with index #3 can be composed of only 9 PRBs.

[0190] Three interlaces (interlace indices #0, #1, and #2) each consisting of 10 PRBs that meet the OCB requirements may be used by a UE that performs random access in an initial active UL BWP (i.e., a UE in RRC idle mode and / or RRC connected mode). Three interlaces (interlace indices #0, #1, and #2) each consisting of 10 PRBs that meet the OCB requirements may be used by a UE that has not yet established an RRC connection and / or does not have a separate (UE-specific) UL BWP configuration. For example, a UE that has not yet established an RRC connection and / or does not have a separate (UE-specific) UL BWP configuration may use the interlace for Msg3 PUSCH transmission and / or HARQ-ACK feedback transmission for Msg4 reception. Two interlaces with indices #3 and #4 each consisting of 9 PRBs that do not meet the OCB requirements may be used by a UE that has established an RRC connection (only in specific cases where the OCB requirements do not need to be met). The two interlaces with indices #3 and #4 that do not meet the OCB requirements may not be used by a UE that performs random access. In addition, the two interlaces with indices #3 and #4 that do not meet the OCB requirement may not be used by UEs that have not established an RRC connection and / or do not have a UL BWP configuration.

[0191] As another example, if the SCS of CORESET#0 is 15kHz, the initial active UL BWP is set to 96 PRBs. In this case, each interlace with index #0 to #5 consists of 10 PRBs, and each interlace with index #6 to #9 consists of 9 PRBs, as shown in FIG. Fig.13 That is, if the UE uses an interlace consisting of only 9 PRBs, the UE may transmit a signal and / or a channel by occupying 81 (PRB)*15 (SCS)*12 (subcarriers)=14580 kHz, and thus may not meet the OCB requirement.

[0192] In this case, 6 interlaces (interlace indexes #0 to #5) each consisting of 10 PRBs that meet the OCB requirements can be used by a UE that performs random access in an initial active UL BWP (i.e., a UE in RRC idle mode and / or RRC connected mode). 6 interlaces (interlace indexes #0 to #5) each consisting of 10 PRBs that meet the OCB requirements can be set as available (valid) interlaces for UEs that have not yet established an RRC connection and / or do not have a separate (UE-specific) UL BWP configuration. For example, a UE that has not yet established an RRC connection and / or does not have a separate (UE-specific) UL BWP configuration can use the interlaces available for Msg3 PUSCH transmission and / or HARQ-ACK feedback transmission for Msg4 reception. Four interlaces (interlace indexes #6 to #9) each consisting of 9 PRBs that do not meet the OCB requirements can be used by a UE that has established an RRC connection (only in specific cases where the OCB requirements do not need to be met). The four interlaces (interlace indexes #6 to #9) that do not meet the OCB requirements may not be used by a UE that performs random access. In addition, four interlaces (interlace indices #6 to #9) that do not meet the OCB requirement may not be used by UEs that have not established an RRC connection and / or do not have a UL BWP configuration.

[0193] The method of embodiment 1 will be further described in terms of signaling between the BS and the UE. As described in the proposed method, the BS may inform the UE of one or more UL interlaces that meet the OCB requirements and instruct the UE to send Msg3 PUSCH and / or A / N PUCCH for Msg4. That is, the UE may be configured to expect that the BS will indicate one or more UL interlaces that meet the OCB requirements. In other words, the UE may expect that the UL interlace that does not meet the OCB requirements will not be indicated for Msg3 PUSCH or A / N PUCCH for Msg4. If a UL interlace that does not meet the OCB requirements is indicated, the UE may determine that an error has occurred. A disadvantage of the proposed method is that the number of UL interlaces that can be used for initial access processing is limited in terms of resource utilization of the BS.

[0194] In addition to the proposed method, the following method may also be considered. When the BS informs a UE of multiple UL interlaces including one or more UL interlaces that meet the OCB requirement, the UE may use multiple interlaces to send Msg3 PUSCH and / or A / N PUCCH for Msg4. If the UE sends a signal and / or channel in multiple indicated UL interlaces, the UE may meet the OCB requirement. In this case, the UE may be expected to indicate at least one UL interface that meets the OCB requirement. For example, when a UE is configured with Fig.12When the UE transmits one channel in multiple UL interlaces, the number of UL interlaces available for initial access processing increases.

[0195] In addition, the BS may inform one UE of a plurality of UL interlaces including only UL interlaces that do not meet the OCB requirement, and the UE may send Msg3 PUSCH or A / N PUCCH for Msg4 in the indicated interlace. To this end, the BS needs to first determine whether the combination of UL interlaces that do not meet the OCB requirement can meet the OCB requirement. If the combination of UL interlaces that do not meet the OCB requirement meets the OCB requirement, the BS may indicate the combination of UL interlaces to the UE. The UE may send Msg3 PUSCH or A / N PUCCH for Msg4 in the indicated combination of UL interlaces. Since the UE performs UL transmission based on the interlace that does not meet the OCB requirement, the advantage is that the number of UL interlaces that can be used for initial access processing is the largest compared to the proposed method.

[0196] The following UE operations may be added to the above-mentioned proposed / configuration methods. In the current NR system, the BS may indicate the PUCCH resource list to the UE through high-layer signaling (e.g., PUCCH-Config) or a predefined configuration (e.g., Table 9.2.1-1 in TS 38.213). Thereafter, the BS may provide the PUCCH resource index to the UE in a 3-bit (or 4-bit) field of the remaining minimum system information (RMSI) and / or DCI format. Based on this, the following BS / UE operations may be defined in the NR-U system.

[0197] First, when the BS configures the PUCCH resource list, the BS may include only the UL interlace index that meets the OCB requirement in the PUCCH resource list. That is, when the BS configures the PUCCH resource list, the BS may exclude the UL interlace index that does not meet the OCB requirement from the PUCCH resource list. Specifically, when the PUCCH resource list is configured, the PUCCH resource list may not be fully filled with only a single UL interlace and initial CS index.

[0198] In this case, (1) the BS may indicate PUCCH resources to the UE by leaving some indexes of the PUCCH resource list empty. The UE may expect that empty indexes are not indicated. If the BS indicates empty indexes of the PUCCH resource list as PUCCH resource indexes, the UE may ignore these PUCCH resource indexes.

[0199] Alternatively, (2) the BS may configure the empty index of the PUCCH resource list as a combination of multiple UL interlaces. That is, the BS may configure a combination of multiple UL interlaces including at least one UL interlace that meets the OCB requirement and add the combination of multiple UL interlaces to the PUCCH resource list. Alternatively, the BS may configure a combination of multiple UL interlaces that do not meet the OCB requirement among the UL interlaces so that the combination of multiple UL interlaces meets the OCB requirement, and add the combination of multiple UL interlaces to the PUCCH resource list. The UE may determine that all PUCCH resource indexes are meaningful and follow the instructions of the BS.

[0200] Alternatively, (3) when the BS fills an empty index of the PUCCH resource list, the BS may use the next symbol of the current PUCCH symbol. That is, the BS may fill the PUCCH resource list by configuring a single UL interlace satisfying the OCB requirement to be sent in the next symbol of the current PUCCH symbol.

[0201] Alternatively, (4) the BS may fill empty indexes of the PUCCH resource list by reusing previously used PUCCH resources. That is, the same PUCCH resource may be indicated by multiple indexes. The UE may determine that all PUCCH resource indexes are meaningful and follow the instructions of the BS.

[0202] For example, if the SCS of CORESET#0 is 30kHz, the initial UL BWP is set to 48 PRBs. In this case, each interlace with index #0, #1, and #2 consists of 10 PRBs, and each interlace with index #3 and #4 consists of only 9 PRBs, as shown in FIG. Fig.12 As shown. That is, the interleaving with indexes #3 and #4 does not meet the OCB requirement. If the BS intends to set 8 PUCCH resource indexes to PUCCH format 0, 6 PUCCH resource indexes out of the 8 PUCCH resource indexes can be configured with a combination of three interleaving indexes (#0, #1 and #2) and two starting CS offsets (#0 and #6). The remaining two PUCCH resource indexes can be configured by treating the combination of interleaving indexes #0 and #4 as one PUCCH resource and combining the combination with the starting CS offsets (#0 and #6). Alternatively, the remaining two PUCCH resource indexes in the PUCCH resource list can be reconfigured from the first interleaving after the next symbol of the OFDM symbol indicated by the BS.

[0203] Secondly, when the BS configures the PUCCH resource list, the BS may use all configured UL interleaving indexes regardless of whether the OCB requirement is met. That is, when the BS configures the PUCCH resource list, the BS may use all UL interleaving indexes.

[0204] The following BS operations and UE operations may be considered. (1) The BS configures a PUCCH resource list by including all UL interlace indices, and indicates the configured PUCCH resource list to the UE. The UE determines whether the OCB requirement is met based on the UL interlace indices included in the PUCCH resource list. Thereafter, the UE may expect not to indicate that only a PUCCH resource index for a UL interlace that does not meet the OCB requirement is used. If the BS indicates that only a PUCCH resource index for a UL interlace that does not meet the OCB requirement is used, the UE may ignore the PUCCH resource index.

[0205] The proposed method can be summarized as follows: When the number of bits indicating PUCCH resources signaled by the DCI field or CCE resource index in the PDCCH is K, the maximum number of PUCCH resources that can be configured in the PUCCH resource set configured by SIB / RMSI (based on a set of PUCCH resource related parameters) can be N=2 K On the other hand, when N PUCCH resources are (virtually) configured based on a set of PUCCH resource-related parameters (configured by SIB / RMSI), if the number of resources that meet the OCB requirement is M and the number of resources that do not meet the OCB requirement is L (i.e., N=M+L), the set of PUCCH resources allocated to / available for the UE may be configured as follows.

[0206] Method (1): A PUCCH resource set may be configured with a total of N PUCCH resources, including M PUCCH resources that meet the OCB requirement and L PUCCH resources that do not meet the OCB requirement. In other words, the PUCCH resource set may include PUCCH resources corresponding to a total of N PUCCH resource indices including M PUCCH resource indices that meet the OCB requirement and L PUCCH resource indices that do not meet the OCB requirement. In this case, the UE may operate under the assumption that the gNB only indicates the M PUCCH resource indices that meet the OCB requirement (or that only the M PUCCH resource indices that meet the OCB requirement are available / sendable).

[0207] Method (2): A PUCCH resource set with a total of N PUCCH resource indices may be configured by mapping only M PUCCH resources that meet the OCB requirement to N PUCCH resource indices. In this case, the actual number of allocated PUCCH resources may be M. Some (e.g., L) PUCCH resource indices may indicate the same PUCCH resource.

[0208] Method (3): A PUCCH resource set may be configured to have a total of N PUCCH resources, including M PUCCH resources that meet OCB requirements and additional L PUCCH resources. In other words, the PUCCH resource set may include PUCCH resources corresponding to a total of N PUCCH resource indices including M PUCCH resource indices that meet OCB requirements and additional L PUCCH resource indices. Additional PUCCH resources may be obtained by configuring a single PUCCH resource in the form of multiple interlaces (or interlaces with multiple indices). Additionally / alternatively, the additional PUCCH resources may be PUCCH resources configured by applying values ​​other than configured PUCCH resource-related parameters (e.g., different starting symbol indices).

[0209] Hereinafter, before describing the method proposed in the present disclosure in detail, a PUCCH resource set and a PUCCH resource indicator (PRI) will be briefly reviewed.

[0210] If the UE does not have a dedicated PUCCH resource configuration provided by PUCCH-ResourceSet in PUCCH-config, the PUCCH resource set is provided by pucch-ResourceCommon. The PUCCH resource set indicated by pucch-ResourceCommon can be determined based on a row index of Table 8 to Table 34 for use in The HARQ-ACK information is transmitted on the PUCCH in the initial UL BWP of RBs. The PUCCH resource set includes 16 resources. For each PUCCH resource, the PUCCH format, the first symbol used for PUCCH transmission, the PUCCH duration, the PRB offset used for PUCCH transmission are configured. and a CS index set for PUCCH transmission. The UE sends PUCCH based on frequency hopping. The OCC with index 0 is used for PUCCH resources with PUCCH format 1 in Table 8. The UE sends PUCCH using the same spatial transmission filter as for PUSCH scheduled by RAR UL grant, as described in clause 8.3 of 3GPP Rel-16 38.214. If the UE is not provided with the pdsch-HARQ-ACK-Codebook, the UE generates at most one HARQ-ACK information bit.

[0211] If the UE needs to provide HARQ-ACK information in a PUCCH transmission in response to detecting that DCI format 1_0 or DCI format 1_1, the UE determines a PUCCH resource. The PUCCH resource is indexed by r PUCCH , where 0 = <r PUCCH =<15 and N CCEis the number of CCEs used for PDCCH reception in a CORESET with DCI format 1_0 or DCI format 1_1, n CCE,0 is the index of the first CCE used for PDCCH reception, Δ PRI It is the value of the PRI field of DCI format 1_0 or DCI format 1_1.

[0212] if The UE determines the PRB index of the PUCCH transmission in the first hop as And the PRB index of the PUCCH transmission in the second hop is determined as Where N CS is the total number of initial CS indices in the initial cyclic shift index set. In addition, the UE determines the initial cyclic shift index in the initial cyclic shift index set as r PUCCH mod N CS .

[0213] if The UE determines the PRB index of the PUCCH transmission in the first hop as And the PRB index of the PUCCH transmission in the second hop is determined as The UE determines the initial cyclic shift index in the initial cyclic shift index set as (r PUCCH -8)mod N CS .

[0214] It is the symbol for the floor operation, meaning the largest natural number or integer not exceeding x.

[0215] [Table 8]

[0216]

[0217]

[0218] The PRI may be included in DCI format 1_0 and DCI format 1_1. The PUCCH resources of the UE may be determined based on the PRI.

[0219] The PRI field value is mapped to the value of the PUCCH resource index set as defined in Table 9. The PUCCH resource index set is provided by the ResourceList of the PUCCH resource from the PUCCH resource set including a maximum of 8 PUCCH resources provided by the PUCCH-RsourceSet.

[0220] [Table 9]

[0221]

[0222] The method proposed in Embodiment 1 will be described in more detail. The following three main methods can be considered.

[0223] [1] Method 1: Define a table configured with 8 PUCCH resource sets without configuring any cell-specific PRB (interlace) offset. Each PUCCH resource set may include 16 PUCCH resources. One of the PUCCH resource sets may be indicated by 3-bit signaling in the RMSI. Specifically, the PUCCH resource may be indicated by 3-bit PRI + 1-bit CCE (= 16 states).

[0224] [2] Method 2: A table consisting of 16 PUCCH resource sets is defined with a cell-specific PRB (interlace) offset. Each PUCCH resource set includes 8 PUCCH resources. One of the PUCCH resource sets can be indicated by 4-bit signaling in the RMSI. Specifically, the PUCCH resource can be indicated by a 3-bit PRI (=8 states).

[0225] [3] Method 3: A table consisting of 16 PUCCH resource sets is defined with a cell-specific PRB (interlace) offset. Each PUCCH resource set includes 16 PUCCH resources. One of the PUCCH resource sets can be indicated by 4-bit signaling in the RMSI. Specifically, the PUCCH resource can be indicated by 3-bit PRI + 1-bit CCE (= 16 states).

[0226] RMSI may mean SIB. A 3-bit PRI may be signaled in a specific field of a DL grant DCI. A 1-bit CCE may be determined based on a CCE index used to transmit a PDCCH carrying a DL grant DCI.

[0227] RMSI may mean SIB. A 3-bit PRI may be signaled in a specific field of a DL grant DCI. A 1-bit CCE may be determined based on a CCE index used to transmit a PDCCH carrying a DL grant DCI.

[0228] When the UL interleaving index is used in the initial UL BWP, Method 1 may have the following three options. Since the UE expects that the initial UL BWP will operate at 30 kHz SCS, these options will be described based on 30 kHz SCS.

[0229] (1) Option 1: Three interleaving indexes that meet the OCB requirements can be used in the previously defined interleaving structure (e.g., Fig.12 interleaved indices #0, #1 and #2).

[0230] (2) Option 2: Five interleaving indexes may be used in the previously defined interleaving structure regardless of whether the OCB requirement is met.

[0231] (3) Option 3: Four interleaving indexes may be used regardless of whether the previously defined interleaving structure or the interleaving structure newly introduced in Embodiment 2 is used.

[0232] According to method 1, a PUCCH resource set table based on 3-bit RMSI signaling without a cell-specific interlace offset may be defined as shown in Table 10. In NR-U, since the UL resources used to transmit PUCCH format 0 / 1 are one interlace consisting of multiple PRBs rather than one PRB, considering the impact of interference between adjacent cells, it may not be necessary to configure a cell-specific PRB offset. Therefore, the existing PUCCH resource set table based on 4-bit RMSI signaling may be modified to a PUCCH resource set table based on 3-bit RMSI signaling as shown in Table 10.

[0233] [Table 10]

[0234] index PUCCH format First Symbol Number of symbols Initial CS index set 0 0 12 2 {0,3} 1 0 12 2 {0,4,8} 2 1 10 4 {0,6} 3 1 10 4 {0,3,6,9} 4 1 4 10 {0,6} 5 1 4 10 {0,3,6,9} 6 1 0 14 {0,6} 7 1 0 14 {0,3,6,9}

[0235] In this case, the method and operation of indicating PUCCH resources with 3-bit PRI + 1-bit CCE (= 16 states) can be configured as follows according to the number of interleaving defined in each option. The capacity of the OCC index described in this document can be based on the number of PUCCH symbols. That is, if the number of symbols is 14, up to 7 OCC indexes can be used. If the number of symbols is 10, up to five OCC indexes can be used. If the number of symbols is 4, up to two OCC indexes can be used.

[0236] Proposal 1) Describe the same as in Option 1 in Fig.12 The case where three interleavings are used out of the five interleavings.

[0237] A. For (RMSI value) indexes 3, 5, and 7 of Table 10, a combination of one of three interleaving indexes and one of four CS indexes (i.e., 0, 3, 6, and 9) is indicated. OCC index #0 is applied. Therefore, 3*4=12 states are configured for PUCCH resources. Since the number of PUCCH resources (r PUCCH ) needs to be 16, so the remaining four states are used to indicate one of the four PUCCH resources based on other OCC indexes (e.g., #1). For example, indicating a combination of one interlace (e.g., interlace index #0) and one of the four CSs. OCC index #1 is applied to the remaining four states.

[0238] B. For (RMSI value) indexes 4 and 6 of Table 10, a combination of one of three interleaving indexes, one of two CS indexes (i.e., 0 and 6), and one of two OCC indexes (e.g., indexes 0 and 1) is indicated. Therefore, 3*2*2=12 states are configured for the PUCCH resource. The remaining four states are used to indicate one of four PUCCH resources based on other OCC indexes (e.g., #2). For example, a combination of one of two interleaving indexes (e.g., interleaving indexes #0 and #1) and one of two CS indexes is indicated. OCC index #2 is applied to the remaining four states.

[0239] C. For (RMSI value) index 2 of Table 10, a combination of one of three interleaving indices, one of two CS indices (i.e., 0 and 6), and one of two OCC indices (e.g., indices 0 and 1) is indicated. The starting symbol index is 10. Therefore, 3*2*2=12 states are configured for the PUCCH resource. The remaining four states are used to indicate one of the four PUCCH resources based on other starting symbols (e.g., index 4 or 5). For example, a combination of one of two interleaving indices (e.g., interleaving indices #0 and #1) and one of two CS indices is indicated. If a combination of one of two interleaving indices and one of two CS indices is indicated, OCC index #0 is applied. As another example, a combination of one of two CS indices (i.e., 0 and 6) and one of two OCC indices (e.g., #0 and #1) may be indicated. If a combination of one of two CS indices and one of two OCC indices is indicated, interleaving index #0 is applied.

[0240] D. For (RMSI value) index 0 of Table 10, a combination of one of three interleaving indices, one of two CS indices (i.e., 0 and 3), and one of two starting symbols (e.g., index 12 and 8 or 9) is indicated. Therefore, 3*2*2=12 states are configured for the PUCCH resource. The remaining four states can be used to indicate one of four PUCCH resources based on other starting symbols (e.g., index 4 or 6). For example, a combination of one of two interleaving indices (e.g., interleaving indices #0 and #1) and one of two CS indices is indicated. Starting symbol index #4 or #6 is applied to the remaining four states.

[0241] E. For (RMSI value) index 1 of Table 10, a combination of one of three interleaving indices and one of three CS indices (i.e., 0, 4, and 8) is indicated. Therefore, 3*3=9 states are configured for the PUCCH resource. The remaining 7 states are used to indicate one of the 7 PUCCH resources based on other starting symbols (e.g., index 8 or 9). For example, a combination of one of three interleaving indices (e.g., interleaving indices #0, #1, and #2) and one of three CS indices is indicated, but for a specific interleaving index (e.g., #0), only one CS (e.g., #0) may be used. Two CS indices (e.g., #4 and #8) can be used for two interleaving indices (e.g., #1 and #2) other than a specific interleaving index. Starting symbol index 8 or 9 is applied to the remaining 7 states.

[0242] Proposal 2) will describe Fig.12 All five interleavings are used as the case for option 2.

[0243] A. For (RMSI value) indexes 3, 5, and 7 of Table 10, a combination of one of five interleaving indices and one of four CS indices (i.e., 0, 3, 6, and 9) is indicated. OCC index #0 is applied. Therefore, 5*4=20 states are configured for PUCCH resources. Since the number of PUCCH resources (r PUCCH ) needs to be 16, so four additional states are excluded from the configuration of PUCCH resources. For example, a combination of one interlace (e.g., interlace index #4) and four CSs is excluded.

[0244] B. For (RMSI value) indexes 2, 4, and 6 of Table 10, a combination of one of five interleaving indexes and one of two CS indexes (i.e., 0 and 6) is indicated. OCC index #0 is applied. Therefore, 5*2=10 states are configured for the PUCCH resource. The remaining 6 states are used to indicate one of the 6 PUCCH resources based on other OCC indexes (e.g., #1). For example, a combination of one of three interleaving indexes (e.g., interleaving indexes #0, #1, and #2) and one of two CS indexes is indicated. OCC index #1 is applied to the remaining 6 states.

[0245] C. For (RMSI value) index 0 of Table 10, a combination of one of five interleaving indices and one of two CS indices (i.e., 0 and 3) is indicated. The starting symbol index 12 is applied. Therefore, 5*2=10 states are configured for the PUCCH resource. The remaining 6 states are used to indicate one of the 6 PUCCH resources based on other starting symbols (e.g., index 8 or 9). For example, a combination of one of three interleaving indices (e.g., interleaving indices #0, #1, and #2) and one of two CS indices is indicated. The starting symbol index 8 or 9 is applied to the remaining 6 states.

[0246] D. For (RMSI value) index 1 of Table 10, a combination of one of five interleaving indices and one of three CS indices (i.e., 0, 4, and 8) is indicated. The starting symbol index 12 is applied. Therefore, 5*3=15 states are configured for the PUCCH resource. The remaining one state is used to indicate a PUCCH resource based on other starting symbols (e.g., index 8 or 9). For example, a combination of an interleaving index (e.g., interleaving index #0) and a CS (e.g., #0) is indicated. The starting symbol index 8 or 9 is applied to the remaining one state.

[0247] Proposal 3) will describe the case where four interleaving indexes are used as in Option 3.

[0248] A. For (RMSI value) indexes 3, 5, and 7 of Table 10, a combination of one of four interleaving indexes and one of four CS indexes (ie, 0, 3, 6, and 9) is indicated. OCC index #0 is applied. Therefore, 4*4=16 states are configured for PUCCH resources.

[0249] B. For (RMSI value) indexes 2, 4, and 6 of Table 10, a combination of one of four interleaving indexes, one of two CS indexes (ie, 0 and 6), and one of two OCC indexes (eg, 0 and 1) is indicated. Therefore, 4*2*2=16 states are configured for PUCCH resources.

[0250] C. For (RMSI value) index 0 of Table 10, a combination of one of four interleaving indices, one of two CS indices (ie, 0 and 3), and one of two starting symbol indices (eg, 12 and 8 or 9) is indicated. Therefore, 4*2*2=16 states are configured for PUCCH resources.

[0251] D. For (RMSI value) index 1 of Table 10, a combination of one of four interleaving indices and one of three CS indices (i.e., 0, 4, and 8) is indicated. A starting symbol index of 12 is applied. Therefore, 4*3=12 states are configured for the PUCCH resource. The remaining four states are used to indicate one of four PUCCH resources based on other starting symbols (e.g., index 8 or 9). For example, a combination of one of four interleaving indices and one CS (e.g., #0) is indicated. Starting symbol index 8 or 9 is applied to the remaining four states.

[0252] As another method, the PUCCH resource set based on the combination of Table 11 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 11 is configured by RMSI signaling, method D or E of proposal 1), method C or D of proposal 2), and / or method C or D of proposal 3) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0253] [Table 11]

[0254] PUCCH format First Symbol Number of symbols Initial CS index set 0 12 2 {0,3} 0 12 2 {0,4,8}

[0255] As another method, the PUCCH resource set based on the combination of Table 12 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 12 is configured by RMSI signaling, method A or C of proposal 1), method A or B of proposal 2), and / or method A or B of proposal 3) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0256] [Table 12]

[0257] PUCCH format First Symbol Number of symbols Initial CS index set 1 10 4 {0,6} 1 10 4 {0,3,6,9}

[0258] As another method, the PUCCH resource set based on the combination of Table 13 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 13 is configured by RMSI signaling, method A or B of proposal 1), method A or B of proposal 2), and / or method A or B of proposal 3) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0259] [Table 13]

[0260] PUCCH format First Symbol Number of symbols Initial CS index set 1 4 10 {0,6} 1 4 10 {0,3,6,9}

[0261] As another method, the PUCCH resource set based on the combination of Table 14 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 14 is configured by RMSI signaling, method A or B of proposal 1), method A or B of proposal 2), and / or method A or B of proposal 3) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0262] [Table 14]

[0263] PUCCH format First Symbol Number of symbols Initial CS index set 1 0 14 {0,6} 1 0 14 {0,3,6,9}

[0264] Next, according to the above method 2, the PUCCH resource set table based on 4-bit RMSI signaling with the addition of a cell-specific interlace (index) offset can be defined as shown in Table 15. In NR-U, since the UL resources used to transmit PUCCH formats 0 and 1 are changed to one interlace consisting of multiple PRBs instead of one PRB, the PUCCH resource set table based on 4-bit RMSI signaling can be configured by changing the PRB offset of the legacy system to the interlace offset. In method 2, since the PUCCH resource is indicated by a 3-bit PRI, a total of 8 states can be configured for the PUCCH resource in one PUCCH resource set.

[0265] [Table 15]

[0266]

[0267] Based on Table 15, the PUCCH resource set can be configured according to option 3 (in which four interleaving indices are used) among the above options 1 to 3. Specifically, the actual PUCCH interleaving index to be used by the UE can be determined by the sum of the value indicated by the cell-specific interleaving offset (or cell-specific interleaving index offset) described in Proposal 4) or 5) and the value indicated by the interleaving index offset (or UE-specific interleaving index offset). For example, the UE-specific interleaving index offset can be defined as 0 or 1. When the cell-specific interleaving index offset is 0, if the use of two interleaving indices (or two UE-specific interleaving indices) is defined in Proposal 4) or Proposal 5) below, the UE can use interleaving indices #0 and #1. In order to use interleaving indices #0 and #1, the UE-specific interleaving index offset can be indicated as 0 or 1. When the cell-specific interleaving index offset is 2, if the use of two interleaving indices (or two UE-specific interleaving indices) is defined in Proposal 4) or Proposal 5), the UE can use interleaving indices #2 and #3. In order to use interleaving indices #2 and #3, the UE-specific interleaving index offset can be indicated as 0 or 1.

[0268] Proposal 4) will describe the case of using four interleaving indexes as in Option 3 based on Table 15.

[0269] A. For (RMSI value) indexes 6, 7, 10, 11, 14, and 15 of Table 15, a combination of one of two interleaving indexes (offset 0 or 1) and one of four CS indexes (i.e., 0, 3, 6, and 9) is indicated. OCC index #0 is applied. Therefore, 2*4=8 states are configured for PUCCH resources.

[0270] B. For (RMSI value) indexes 4, 5, 8, 9, 12, and 13 of Table 15, a combination of one of two interleaving indices (offset 0 or 1), one of two CS indices (i.e., 0 and 6), and one of two OCC indices (e.g., 0 and 1) is indicated. Therefore, 2*2*2=8 states are configured for PUCCH resources.

[0271] C. For (RMSI value) index 0 and 1 of Table 15, a combination of one of two interleaving indices (offset 0 or 1), one of two CS indices (i.e., 0 and 3), and one of two starting symbol indices (e.g., 12 and 8 or 9) is indicated. Therefore, 2*2*2=8 states are configured.

[0272] D. For (RMSI value) index 2 and 3 of Table 15, a combination of one of two interleaving indices (offset 0 or 1) and one of three CS indices (i.e., 0, 4, and 8) is indicated. The starting symbol index 12 is applied. Therefore, 2*3=6 states are set for the PUCCH resource configuration. Since a total of 8 states need to be configured for the PUCCH resource, the remaining two states are used to indicate one of the two PUCCH resources based on other starting symbols (e.g., index 8 or 9). For example, a combination of one of the two interleaving indices and one CS (e.g., #0) is indicated. The starting symbol index 8 or 9 can be applied to the remaining two states.

[0273] As an additional method, it may be considered to indicate the PUCCH resource by 3-bit PRI + 1-bit CCE based on Table 15. Since the PUCCH resource is indicated by a total of four bits, a total of 16 states may be configured for the PUCCH resources in one PUCCH resource set. These 16 states may be configured as described in Proposal 5).

[0274] Proposal 5) will describe the case where the PUCCH resource is indicated by 3-bit PRI + 1-bit CCE and four interleaving indexes are used as in Option 3.

[0275] A. For (RMSI value) indexes 6, 7, 10, 11, 14, and 15 of Table 15, a combination of one of two interleaving indexes (offset 0 or 1), one of four CS indexes (i.e., 0, 3, 6, and 9), and one of two OCC indexes (e.g., 0 and 1) is indicated. Therefore, 2*4*2=16 states are configured for PUCCH resources.

[0276] B. For (RMSI value) indexes 8, 9, 12, and 13 of Table 15, a combination of one of two interleaving indices (offset 0 or 1), one of two CS indices (i.e., 0 and 6), and one of four OCC indices (e.g., 0, 1, 2, and 3) is indicated. Therefore, 2*2*4=16 states are configured for PUCCH resources.

[0277] C. For (RMSI value) indexes 4 and 5 of Table 15, a combination of one of two interleaving indexes (offset 0 or 1), one of two CS indexes (i.e., 0 and 6), one of two OCC indexes (e.g., 0 and 1), and one of two starting symbols (e.g., index 10 and 4 or 5) is indicated. Therefore, 2*2*2*2=16 states are configured for PUCCH resources.

[0278] D. For (RMSI value) index 0 and 1 of Table 15, a combination of one of two interleaving indices (offset 0 or 1), one of two CS indices (i.e., 0 and 3), and one of four starting symbol indices (e.g., 12, 8 or 9, 4 or 6, and 0 or 3) is indicated. Therefore, 2*2*4=16 states are configured for PUCCH resources.

[0279] E. For (RMSI value) indexes 2 and 3 of Table 15, a combination of one of two interleaving indexes (offset 0 or 1), one of three CS indexes (i.e., 0, 4, and 8), and one of two starting symbols (e.g., index 12 and 8 or 9) is indicated. Therefore, 2*3*2=12 states are configured for the PUCCH resource. The remaining four states are used to indicate one of four PUCCH resources based on other starting symbols (e.g., index 4 or 6). For example, a combination of one of two interleaving indexes and one of two CS indexes (e.g., 0 and 4) is indicated.

[0280] As another method, the PUCCH resource set based on the combination of Table 16 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 16 is configured by RMSI signaling, method C or D of proposal 4) and / or method D or E of proposal 5) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0281] [Table 16]

[0282]

[0283] As another method, the PUCCH resource set based on the combination of Table 17 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 17 is configured by RMSI signaling, method A or B of proposal 4) and / or method A or C of proposal 5) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0284] [Table 17]

[0285]

[0286] As another method, the PUCCH resource set based on the combination of Table 18 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 18 is configured by RMSI signaling, method A or B of proposal 4) and / or method A or B of proposal 5) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0287] [Table 18]

[0288]

[0289] As another method, the PUCCH resource set based on the combination of Table 19 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 19 is configured by RMSI signaling, method A or B of proposal 4) and / or method A or B of proposal 5) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0290] [Table 19]

[0291]

[0292] Next, according to the above method 3, the PUCCH resource set table based on 4-bit RMSI signaling with the cell-specific interleaving offset (or cell-specific interleaving index offset) added can be defined as shown in Table 20. In NR-U, since the UL resources used to transmit PUCCH formats 0 and 1 are changed to one interleaving consisting of multiple PRBs instead of one PRB, the PUCCH resource set table based on 4-bit RMSI signaling can be configured by changing the PRB offset of the legacy system to the interleaving offset. In method 3, since the PUCCH resources are indicated by 3-bit PRI+1-bit CCE, a total of 16 states can be configured for the PUCCH resources in one PUCCH resource set.

[0293] [Table 20]

[0294]

[0295] Based on Table 20, the PUCCH resource set can be configured according to option 3 (in which four interleaving indices are used) among the proposed options. Specifically, the actual PUCCH interleaving index to be used by the UE can be determined by the sum of the value indicated by the cell-specific interleaving offset (or cell-specific interleaving index offset) and the value indicated by the interleaving index offset (or UE-specific interleaving index offset) (to be described in Proposal 6)). For example, the UE-specific interleaving index offset can be defined as 0 or 1. When the cell-specific interleaving index offset is 0, if two interleaving indices (or two UE-specific interleaving indices) are defined as used in Proposal 6) below, the UE can use interleaving indices #0 and #1. In order to use interleaving indices #0 and #1, the UE-specific interleaving index offset can be indicated as 0 or 1. When the cell-specific interleaving index offset is 2, if two interleaving indices (or two UE-specific interleaving indices) are defined as used in Proposal 6), the UE can use interleaving indices #2 and #3. In order to use interleaving indices #2 and #3, the UE-specific interleaving index offset can be indicated as 0 or 1.

[0296] Proposal 6) will describe the case of using four interleaving indexes as in Option 3 based on Table 20.

[0297] A. For (RMSI value) indexes 7, 8, 9, 10, 12, 13, 14, and 15 of Table 20, a combination of one of four CS indices (i.e., 0, 3, 6, and 9) and one of four OCC indices (e.g., 0, 1, 2, and 3) is indicated. The PUCCH interlace index is determined by the cell-specific interlace offset. For example, when the cell-specific interlace offset is X, the final PUCCH interlace actually allocated to the UE is also the interlace with index X. Therefore, 4*4=16 states are configured for the PUCCH resource.

[0298] B. For (RMSI value) index 4 and 5 of Table 20, a combination of one of two interleaving indices (offset 0 or 1), one of four CS indices (i.e., 0, 3, 6, and 9), and one of two OCC indices (e.g., 0 and 1) is indicated. Therefore, 2*4*2=16 states are configured for PUCCH resources. The offset value 0 or 1 used to indicate the two interleaving indices may be indicated by a UE-specific interleaving offset.

[0299] C. For (RMSI value) indexes 3, 6, and 11 of Table 20, a combination of one of four interleaving indexes, one of two CS indexes (ie, 0 and 6), and one of two OCC indexes (eg, 0 and 1) is indicated. Therefore, 4*2*2=16 states are configured for PUCCH resources.

[0300] D. For (RMSI value) index 0 of Table 20, a combination of one of four interleaving indices, one of two CS indices (ie, 0 and 3), and one of two starting symbol indices (eg, 12 and 8 or 9) is indicated. Therefore, 4*2*2=16 states are configured for PUCCH resources.

[0301] E. For (RMIS value) index 1 and 2 of Table 20, a combination of one of two interleaving indices (offset 0 or 1), one of three CS indices (i.e., 0, 4, and 8), and one of two starting symbol indices (e.g., 12 and 8 or 9) is indicated. Therefore, 2*3*2=12 states are configured for the PUCCH resource. The remaining four states are used to indicate one of the four PUCCH resources based on other starting symbols (e.g., index 4 or 6). For example, a combination of one of two interleaving indices (offset 0 or 1) and one of two CS indices (e.g., #0 and #4) is indicated. Starting symbol index 4 or 6 is applied to the remaining four states. As another example, a combination of three CS indices may be indicated by one interleaving index (e.g., offset 0), and another interleaving index (e.g., offset 1) may use only a specific CS index (e.g., #0).

[0302] As another method, the PUCCH resource set based on the combination of Table 21 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 21 is configured by RMSI signaling, method D or E of Proposal 6) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0303] [Table 21]

[0304]

[0305] As another method, the PUCCH resource set based on the combination of Table 22 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 22 is configured by RMSI signaling, method B or C of Proposal 6) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0306] [Table 22]

[0307]

[0308] As another method, the PUCCH resource set based on the combination of Table 23 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 23 is configured by RMSI signaling, method A or C of Proposal 6) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0309] [Table 23]

[0310]

[0311] As another method, the PUCCH resource set based on the combination of Table 24 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 24 is configured by RMSI signaling, method A or C of Proposal 6) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0312] [Table 24]

[0313]

[0314] In addition, the following structure can be considered for 3-sector cell deployment. That is, a PUCCH resource set table based on 4-bit RMSI signaling with a cell-specific interleaving offset (or cell-specific interleaving index offset) added can be defined as shown in Table 25. In NR-U, since the UL resources used to transmit PUCCH formats 0 and 1 are changed to one interleaving consisting of multiple PRBs instead of one PRB, the PUCCH resource set table based on 4-bit RMSI signaling can be configured by changing the PRB offset of the traditional system to the interleaving offset. In addition, since the PUCCH resources are indicated by 3-bit PRI + 1-bit CCE, a total of 16 states can be configured for the PUCCH resources in one PUCCH resource set.

[0315] [Table 25]

[0316]

[0317] Based on Table 25, the PUCCH resource set can be configured according to option 3 (in which four interleaving indices are used) among the proposed options. Specifically, the actual PUCCH interleaving index to be used by the UE can be determined by the sum of the value indicated by the cell-specific interleaving offset (or cell-specific interleaving index offset) and the value indicated by the interleaving index offset (or UE-specific interleaving index offset) (to be described in Proposal 7)). For example, the UE-specific interleaving index offset can be defined as 0 or 1. When the cell-specific interleaving index offset is 0, if two interleaving indices (or two UE-specific interleaving indices) are defined as used in Proposal 7) below, the UE can use interleaving indices #0 and #1. In order to use interleaving indices #0 and #1, the UE-specific interleaving index offset can be indicated as 0 or 1. When the cell-specific interleaving index offset is 2, if two interleaving indices (or two UE-specific interleaving indices) are defined as used in Proposal 7), the UE can use interleaving indices #2 and #3. In order to use interleaving indices #2 and #3, the UE-specific interleaving index offset can be indicated as 0 or 1.

[0318] Proposal 7) will describe the case of using four interleaving indexes as in Option 3 based on Table 25.

[0319] A. For (RMSI value) indexes 9, 10, 11, 13, 14, and 15 of Table 25, a combination of one of four CS indices (i.e., 0, 3, 6, and 9) and one of four OCC indices (e.g., 0, 1, 2, 3) is indicated. The PUCCH interlace index is determined by the cell-specific interlace offset. For example, when the cell-specific interlace offset is X, the final PUCCH interlace actually allocated to the UE is also the interlace with index X. Therefore, 4*4=16 states are configured for the PUCCH resource.

[0320] B. For (RMSI value) index 5, 6, 7 of Table 25, a combination of one of four CS indices (i.e., 0, 3, 6, and 9), one of two OCC indices (i.e., 0 and 1), and one of two starting symbol indices (e.g., 10 and 4 or 5) is indicated. The PUCCH interlace index is determined by the cell-specific interlace offset. For example, when the cell-specific interlace offset is X, the final PUCCH interlace actually allocated to the UE is also the interlace with index X. Therefore, 4*2*2=16 states are configured for the PUCCH resource.

[0321] C. For (RMSI value) indexes 4, 8, and 12 of Table 25, a combination of one of four interleaving indexes, one of two CS indexes (ie, 0 and 6), and one of two OCC indexes (eg, 0 and 1) is indicated. Therefore, 4*2*2=16 states are configured for PUCCH resources.

[0322] D. For (RMSI value) index 0 and 1 of Table 25, a combination of one of two interleaving indices (offset 0 or 1), one of two CS indices (i.e., 0 and 3), and one of four starting symbol indices (e.g., 12, 8 or 9, 4 or 6, and 0 or 3) is indicated. Therefore, 2*2*4=16 states are configured for PUCCH resources. The offset value 0 or 1 used to indicate the two interleaving indices may be indicated by a UE-specific interleaving offset.

[0323] E. For (RMSI value) indexes 2 and 3 of Table 25, a combination of one of two interleaving indices (offset 0 or 1), one of three CS indices (i.e., 0, 4, and 8), and one of two starting symbol indices (e.g., 12 and 8 or 9) is indicated. Therefore, 2*3*2=12 states are configured for the PUCCH resource. The remaining four states are used to indicate one of four PUCCH resources based on other starting symbols (e.g., index 4 or 6). For example, a combination of one of two interleaving indices (offset 0 or 1) and one of two CS indices (e.g., #0, #4) is indicated. Starting symbol index 4 or 6 may be applied to the remaining four states. As another example, a combination of three CS indices may be indicated by one interleaving index (e.g., offset 0), and another interleaving index (e.g., offset 1) may use only a specific CS index (e.g., #0).

[0324] As another method, the PUCCH resource set based on the combination of Table 26 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 26 is configured by RMSI signaling, method D or E of Proposal 7) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0325] [Table 26]

[0326]

[0327] As another method, the PUCCH resource set based on the combination of Table 27 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 27 is configured by RMSI signaling, method B or C of Proposal 7) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0328] [Table 27]

[0329]

[0330] As another method, the PUCCH resource set based on the combination of Table 28 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 28 is configured by RMSI signaling, method A or C of Proposal 7) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0331] [Table 28]

[0332]

[0333] As another method, the PUCCH resource set based on the combination of Table 29 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 29 is configured by RMSI signaling, method A or C of Proposal 7) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0334] [Table 29]

[0335]

[0336] In addition, the following structure can be considered for 3-sector cell deployment. That is, a PUCCH resource set table based on 4-bit RMSI signaling with a cell-specific interleaving offset (or cell-specific interleaving index offset) added can be additionally defined as shown in Table 30. In NR-U, since the UL resources used to transmit PUCCH formats 0 and 1 are changed to one interleaving consisting of multiple PRBs instead of one PRB, the PUCCH resource set table based on 4-bit RMSI signaling can be configured by changing the PRB offset of the traditional system to the interleaving offset. In addition, since the PUCCH resources are indicated by 3-bit PRI + 1-bit CCE, a total of 16 states can be configured for the PUCCH resources in one PUCCH resource set.

[0337] [Table 30]

[0338]

[0339] Based on Table 30, the PUCCH resource set can be configured according to option 3 (in which four interleaving indices are used) among the proposed options. Specifically, the actual PUCCH interleaving index to be used by the UE can be determined by the sum of the value indicated by the cell-specific interleaving offset (or cell-specific interleaving index offset) and the value indicated by the interleaving index offset (or UE-specific interleaving index offset) (to be described in Proposal 8)). For example, the UE-specific interleaving index offset can be defined as 0 or 1. When the cell-specific interleaving index offset is 0, if two interleaving indices (or two UE-specific interleaving indices) are defined as used in Proposal 8) below, the UE can use interleaving indices #0 and #1. In order to use interleaving indices #0 and #1, the UE-specific interleaving index offset can be indicated as 0 or 1. When the cell-specific interleaving index offset is 2, if two interleaving indices (or two UE-specific interleaving indices) are defined as used in Proposal 8), the UE can use interleaving indices #2 and #3. In order to use interleaving indices #2 and #3, the UE-specific interleaving index offset can be indicated as 0 or 1.

[0340] Proposal 8) will describe the case of using four interleaving indexes as in Option 3 based on Table 30.

[0341] A. For (RMSI value) indexes 9, 10, 11, 13, 14, and 15 of Table 30, a combination of one of four CS indices (i.e., 0, 3, 6, and 9) and one of four OCC indices (e.g., 0, 1, 2, and 3) is indicated. The PUCCH interlace index is determined by the cell-specific interlace offset. For example, when the cell-specific interlace offset is X, the final PUCCH interlace actually allocated to the UE is also the interlace with index X. Therefore, 4*4=16 states are configured for the PUCCH resource.

[0342] B. For (RMSI value) indexes 5, 6, and 7 of Table 30, a combination of one of four CS indices (i.e., 0, 3, 6, and 9), one of two OCC indices (i.e., 0 and 1), and one of two symbol indices (e.g., 10 and 4 or 5) is indicated. The PUCCH interlace index is determined by the cell-specific interlace offset. For example, when the cell-specific interlace offset is X, the final PUCCH interlace actually allocated to the UE is the interlace with index X. Therefore, 4*2*2=16 states are configured for the PUCCH resource.

[0343] C. For (RMSI value) indexes 4, 8, and 12 of Table 30, a combination of one of four interleaving indices, one of two CS indices (ie, 0 and 6), and one of two OCC indices (eg, 0 and 1) is indicated. Therefore, 4*2*2=16 states are configured for PUCCH resources.

[0344] D. For (RMSI value) index 0 of Table 30, a combination of one of four interleaving indices, one of two CS indices (ie, 0 and 3), and one of two starting symbol indices (eg, 12 and 8 or 9) is indicated. Therefore, 4*2*2=16 states are configured for PUCCH resources.

[0345] E. For (RMSI value) indexes 1, 2, and 3 of Table 30, a combination of one of three CS indices (i.e., 0, 4, and 8) and one of five starting symbol indices (e.g., 12, 9, 6, 3, and 0) is indicated. The PUCCH interleaving index is determined by the cell-specific interleaving offset. For example, if the cell-specific interleaving offset is X, the final PUCCH interleaving actually allocated to the UE is also the interleaving with index X. Therefore, 3*5=15 states are configured for the PUCCH resource. The remaining one state is set as a reserved state.

[0346] As another method, the PUCCH resource set based on the combination of Table 31 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 31 is configured by RMSI signaling, method D or E of Proposal 8) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0347] [Table 31]

[0348]

[0349] As another method, the PUCCH resource set based on the combination of Table 32 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 32 is configured by RMSI signaling, method B or C of Proposal 8) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0350] [Table 32]

[0351]

[0352] As another method, the PUCCH resource set based on the combination of Table 33 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 33 is configured by RMSI signaling, method A or C of Proposal 8) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0353] [Table 33]

[0354]

[0355] As another method, the PUCCH resource set based on the combination of Table 34 may be included in at least the PUCCH resource set table based on RMSI signaling. When one of the combinations of Table 34 is configured by RMSI signaling, method A or C of Proposal 8) may be applied to indicate a specific PUCCH resource based on the combination in the PUCCH resource set.

[0356] [Table 34]

[0357]

[0358] 3.2. Implementation method 2

[0359] Embodiment 2 relates to a method of introducing a new interleaving structure that can satisfy the OCB requirement in certain situations.

[0360] Specifically, Embodiment 2 relates to a method of introducing a new interleaving structure suitable for the initial active UL BWP. For example, if the SCS of CORESET#0 is 30 kHz, the initial active UL BWP is set to 48 PRBs. Each interleaving includes 12 PRBs. The interval between PRBs is determined to be four PRBs (relative to the PRB start point). In this case, Fig.14 As shown, each of the four interlaces (interlace indexes #0 to #3) consists of 12 PRBs. The frequency band occupied by each interlace is 45 (PRB) * 30 (SCS) * 12 (subcarriers) = 16200 kHz, thus meeting the OCB requirement.

[0361] As another example, if the SCS of CORESET#0 is 15 kHz, the initial active UL BWP is set to 96 PRBs. Each interlace includes 12 PRBs. The spacing between PRBs is determined to be 8 PRBs (relative to the PRB start point). In this case, Fig.15 As shown, each of the 8 interlaces (interlace indexes #0 to #7) consists of 12 PRBs. The frequency band occupied by each interlace is 89 (PRB) * 15 (SCS) * 12 (subcarriers) = 16020 kHz, thus meeting the OCB requirement.

[0362] In the method proposed above, when the UE operates in the initial active UL BWP, the UE may be configured to use the proposed interleaving structure, wherein each interleaving includes 12 RBs, four PRBs for a 30kHz SCS interval, or 8 PRBs for a 15kHz SCS interval. The initial active UL BWP may include 48 PRBs for a 30kHz SCS, or 96 PRBs for a 15kHz SCS. For example, the UE may perform random access in RRC idle mode and / or RRC connected mode. Additionally / alternatively, the UE may not have established an RRC connection. Additionally / alternatively, the UE may not have established a separate UE-specific UL BWP configuration. An interleaving structure in which each interleaving consists of 12 RBs, four PRBs for a 30kHz SCS interval, or 8 PRBs for a 15kHz SCS interval may be referred to as interleaving type #1. For example, the UE may use a type #1 interleaving structure for Msg3 PUSCH transmission and / or HARQ-ACK feedback transmission for Msg4 reception.

[0363] When the UE operates in another active UL BWP, the UE may be configured to use an interleaving structure in which each interleave includes 10 (or 11) RBs, five PRBs for a 30kHz SCS interval, or 10 PRBs for a 15kHz SCS interval. The other active UL BWP may include 51 PRBs for a 30kHz SCS or 106 PRBs for a 15kHz SCS. For example, the UE may perform random access in RRC idle mode and / or RRC connected mode. Additionally / alternatively, the UE may not have established an RRC connection. Additionally / alternatively, the UE may not have established a separate UE-specific UL BWP configuration. An interleaving structure in which each interleave consists of 10 (or 11) RBs, five PRBs for a 30kHz SCS interval, or 10 PRBs for a 15kHz SCS interval may be referred to as interleaving type #2.

[0364] In addition, the Msg3 transmission process can be performed not only by the UE performing initial access but also by the UE in the connected mode. Therefore, there may be a situation where the UE needs to select one of the proposed interleaving consisting of 12 RBs and the interleaving consisting of 10 RBs. The situation where the UE performs the above selection can at least be a contention-free random access (CFRA) situation. The BS can indicate which one of the interleaving type #1 in which each interleaving consists of 12 RBs and the interleaving type #2 in which each interleaving consists of 10 RBs needs to be used by the BS by indicating the UL grant of the PUSCH (e.g., Msg3) transmission.

[0365] Embodiments 1 and 2 proposed above can be applied to the following three cases.

[0366] a. Transmission in the initial active UL BWP corresponding to the CORESET (#0) configured for PBCH / SIB

[0367] b. Transmission in the initial active UL BWP corresponding to the CORESET (#0) configured by RRC signaling other than PBCH / SIB

[0368] c. Transmission in any active UL BWP established by RRC signaling

[0369] 3.3. Implementation method 3

[0370] Embodiment 3 proposes a new interleaving structure that can be used in other situations.

[0371] In the future, NR U-band operation in a channel bandwidth (BW) of 10 MHz is considered. Therefore, it is necessary to consider the interleaving structure available in the 10 MHz channel BW. According to Table 7, when the SCS is 30 kHz, the 10 MHz channel BW includes 24 PRBs. When the SCS is 15 kHz, the 10 MHz channel BW includes 52 PRBs. Below, the new interleaving structure available in this case will be described.

[0372] (1) For 30kHz SCS,

[0373] A. A structure is proposed in which each interlace consists of 12 PRBs and the interval between PRBs is two PRBs (relative to the starting point). The total number of interlace indexes is 2. The frequency band occupied by each interlace is 23 (PRB) * 30 (SCS) * 12 (subcarrier) = 8280kHz, which exceeds 80% of 10MHz, thereby meeting the OCB requirement.

[0374] B. A structure is proposed in which each interlace consists of 8 PRBs and the interval between PRBs is three PRBs (relative to the starting point). The total number of interlace indexes is 3. The frequency band occupied by each interlace is 22 (PRB) * 30 (SCS) * 12 (subcarrier) = 7920 kHz.

[0375] (2) For 15kHz SCS,

[0376] A. A structure is proposed in which each interlace consists of 10 (or 11) PRBs and the interval between PRBs is five PRBs (relative to the starting point). The total number of interlace indexes is 5. The frequency band occupied by each interlace is 46 (PRB) * 15 (SCS) * 12 (subcarrier) = 8280kHz, which exceeds 80% of 10MHz, thereby meeting the OCB requirement.

[0377] When the SCS is 60 kHz, a BW of 20 MHz is composed of 24 PRBs. Therefore, the method (1) proposed in Embodiment 3 can also be applied.

[0378] 4. Implementation 4 (LBT subband indication for bandwidth partial switching)

[0379] Multiple BWPs may be configured in a service cell configured for a UE. Different numbers of LBT subbands may be configured and / or defined in each BWP. For example, at least one to a maximum of five LBT subbands may be configured and / or defined in each BWP. In addition, in order to indicate the LBT subbands allocated for UL transmission of the UE, the BS may use a bitmap or RIV. The UL transmission may include one or more of the UL physical channels and / or signals described herein, such as PUSCH and / or PUCCH transmissions. The bitmap indicates whether each LBT subband is allocated to the UE via a 1-bit on / off. The RIV indicates the starting LBT subband and the number of consecutive LBT subbands in frequency starting from the starting LBT subband.

[0380] The UE should be allocated at least one LBT subband. When a bitmap is used and all information bits of the bitmap are indicated as 0, the UE may determine that the indication is invalid information. Even when there is only one LBT subband in a particular BWP, the UE should be allocated at least one LBT subband. Therefore, the size of the information bit used to allocate the LBT subband may be zero. When there is only one LBT subband in a particular BWP, the UE should be allocated one LBT subband, so there is no need for an indication of 0 / 1.

[0381] In terms of characteristics, the information bits may be configured as follows to allocate the LBT subbands through a bitmap or RIV. Hereinafter, the total number of information bits is K. Since the LBT subband includes a set of RBs, it may also be referred to as an RB set.

[0382] 4-1-A) Information bits for allocating LBT subbands may be transmitted by newly defining a DCI field including K bits independently of an existing DCI field. The DCI field including K bits indicates the LBT subband, and a frequency domain resource allocation (FDRA) field indicates interleaving allocation.

[0383] 4-1-B) LBT subbands may be allocated by adding K most significant bits (MSBs) to the FDRA field predefined in the legacy system. Thus, a single FDRA field indicates both LBT subband and interlace allocation.

[0384] 4-1-C) The LBT sub-bands can be allocated by adding the K least significant bits (LSBs) to the pre-defined FDRA field in the traditional system. The FDRA field includes K bits providing information about the RB set and the MSB providing information about the interleaved allocation. Thus, a single FDRA field indicates both the LBT sub-bands and the interleaved allocation.

[0385] In the traditional NR system, a method for interpreting the information field according to the BWP switch is defined. The UE is indicated by non-backoff DCI the UL (or DL) BWP to which the UE is to switch from the current active UL (or DL) BWP. For example, the non-backoff DCI may include DCI format 0_1 for UL grant and DCI format 1_1 for DL grant.

[0386] 4-2-1) When the number of PRBs of the UL (or DL) BWP to be newly switched to (or the size of the RA field corresponding to the number of PRBs) is less than the number of PRBs of the current active UL (or DL) BWP (or the size of the RA field corresponding to the number of PRBs), the UE interprets only as many LSBs as the number of information bits of the DCI indicated in the active BWP corresponding to the number of PRBs of the UL (or DL) BWP to be newly switched to.

[0387] 4-2-2) When the number of PRBs of the UL (or DL) BWP newly switched to (or the size of the RA field corresponding to the number of PRBs) is greater than the number of PRBs of the current active UL (or DL) BWP (or the size of the RA field corresponding to the number of PRBs), the UE pads the MSBs with zeros so that the information field of the DCI indicated in the active BWP matches the number of bits corresponding to the number of PRBs of the UL (or DL) BWP newly switched to, and then interprets the information field.

[0388] The operations of the traditional system described in 4-2-1 and 4-2-2 can be applied to the shared spectrum. As the number of LBT sub-bands of each UL (or DL) BWP changes, the size of the information bits for allocating the LBT sub-bands also changes. Thus, the UE can apply the methods described in 4-2-1 and 4-2-2 to interpret the information bits. However, the methods described in 4-2-1 and 4-2-2 may not be used as they are, and additional UE operations need to be defined regarding the information bits for allocating the LBT sub-bands. When the LBT sub-bands are allocated by bitmap or RIV, the additional UE operations required in specific cases are presented by the following examples.

[0389] 4-3) Assume that the number of LBT sub-bands in the current active BWP is N (e.g., 0 < N < 6), and the number of LBT sub-bands in the new BWP to be switched to is M (e.g., 0 < M < 6).

[0390] 4-3-1) When N>M and M>1, the following operations can be performed.

[0391] 4-3-1-i) When the method of 4-1-A is applied, since M is less than N, the UE may interpret only the first L bits (i.e., L MSB) or the last L bits (i.e., L LSB) corresponding to the number of bits matching the number of LBT subbands in the new UL BWP to be switched to among the bits of the information field including the LBT subband indication field in the DCI indicated in the active BWP as the LBT subband allocation information of the new BWP to be switched to. The number of bits of the information field in the DCI indicated to the UE in the active BWP may be K. When a bitmap is used, K=M. When a bitmap is used, L=M.

[0392] The 4-3-1-i method may be used even when LBT subbands are allocated by RIV, N>M, and M>=1. However, when the number of LBT subbands in the new BWP to be switched to is 1, L may be set to 0.

[0393] 4-3-1-ii) When the method of 4-1-B is applied, since M is less than N, the UE may interpret only the first L bits (i.e., L MSBs) or the last L bits (i.e., L LSBs) corresponding to the number of bits that matches the number of LBT subbands in the new BWP to be switched to among the K MSBs of the FDRA field of the DCI indicated in the active BWP as the LBT subband allocation information of the new BWP to be switched to. As described in 4-1-B, the K MSBs of the FDRA field correspond to the information bits indicating the LBT subbands.

[0394] The method of 4-3-1-ii may be used even when LBT subbands are allocated by RIV, N>M, and M>=1. However, when the number of LBT subbands in the new BWP to be switched to is 1, L may be set to 0.

[0395] 4-3-1-iii) When the method of 4-1-C is applied, since M is less than N, the UE may interpret only the first L bits (i.e., L MSB) or the last L bits (i.e., L LSB) corresponding to the number of bits that matches the number of LBT subbands in the new BWP to be switched to among the K LSBs of the FDRA field of the DCI indicated in the active BWP as the LBT subband allocation information of the new BWP to be switched to. As described in 4-1-C, the K LSBs of the FDRA field correspond to the information bits indicating the LBT subband (or RB set).

[0396] The method of 4-3-1-iii may be used even when LBT subbands are allocated by RIV, N>M, and M>=1. However, when the number of LBT subbands in the new BWP to be switched to is 1, L may be set to 0.

[0397] 4-3-2) When N > M and M = 1, since the number of LBT sub-bands of the new BWP to be switched to is 1, regardless of each information field including the LBT sub-band indication field and the LBT sub-band allocation information signaled by the information field in the DCI indicated to the UE in the active BWP, the UE can interpret that the UE is allocated the new BWP to be switched to. Alternatively, the UE can interpret that the UE is allocated the new BWP to be switched to, ignoring each information field including the LBT sub-band indication field and the LBT sub-band allocation information signaled by the information field in the DCI indicated to the UE in the active BWP.

[0398] 4-3-3) When N < M and N > 1, the following operations can be performed.

[0399] 4-3-3-i) When applying the method of 4-1-A, since M is greater than N, the UE can pad L bits of zeros at the beginning or end of the information field so that each information field of the DCI indicated in the active BWP has the same number of bits as the number of LBT sub-bands in the new BWP to be switched to, and then interpret the information field. For example, the information field can be the LBT sub-band indication field. The number of bits of the information field in the DCI indicated to the UE in the active BWP can be K. When using a bitmap, K = M. When using a bitmap, L = M.

[0400] In the case of padding zeros at the beginning of the LBT sub-band indication field, the UE can subtract M - N from the LBT sub-band index obtained from the indicated bitmap information and reinterpret the LBT sub-band index so that the LBT sub-bands can be allocated to the UE starting from the lowest LBT sub-band index. For example, when N = 2 and M = 5, the UE can interpret the allocated LBT sub-band index as "000ii" (i is 0 or 1). When both i's are 1, it indicates LBT sub-band indices #3 and #4. However, the UE can reinterpret the LBT sub-band index as LBT sub-band indices #0 and #1 by subtracting 3 (= 5 - 2) from LBT sub-band indices #3 and #4.

[0401] Even when the LBT sub-bands are allocated by RIV, N < M, and N >= 1, the method of 4-3-3-i can be used. However, when the number of LBT sub-bands of the new BWP to be switched to is 1, K can be set to 0.

[0402] 4-3-3-ii) When applying the method of 4-1-B, since M is greater than N, the UE may pad zeros at the beginning or end of the K MSB of the FDRA field so that the K MSB of the FDRA field matches the number of LBT sub-bands in the new BWP to which the UE is to switch, and then interpret the FDRA field of the DCI indicated in the active BWP. As described in 4-1-B, the K MSB of the FDRA field corresponds to the information bits indicating the LBT sub-bands.

[0403] In the case of padding zeros at the beginning of the K MSB of the FDRA field, the UE may subtract M - N from the LBT sub-band index obtained from the indicated bitmap information and reinterpret the LBT sub-band index so that the LBT sub-bands can be allocated to the UE starting from the lowest LBT sub-band index.

[0404] Even when the LBT sub-bands are allocated by RIV, N < M, and N >= 1, the method of 4-3-3-ii can be used. However, when the number of LBT sub-bands in the new BWP to which the UE is to switch is 1, K can be set to 0.

[0405] 4-3-3-iii) When applying the method of 4-1-C, since M is greater than N, the UE may pad zeros at the beginning or end of the K LSB of the FDRA field so that the K LSB of the FDRA field matches the number of LBT sub-bands in the new BWP to which the UE is to switch, and then interpret the FDRA field of the DCI indicated in the active BWP. As described in 4-1-C, the K LSB of the FDRA field corresponds to the information bits indicating the LBT sub-bands (or RB sets).

[0406] In the case of padding zeros at the beginning of the K LSB of the FDRA field, the UE may subtract M - N from the LBT sub-band index obtained from the indicated bitmap information and reinterpret the LBT sub-band index so that the LBT sub-bands can be allocated to the UE starting from the lowest LBT sub-band index.

[0407] Even when the LBT sub-bands are allocated by RIV, N < M, and N >= 1, the method of 4-3-3-iii can be used. However, when the number of LBT sub-bands in the new BWP to which the UE is to switch is 1, K can be set to 0.

[0408] 4-3-4) N < M and N = 1

[0409] 4-3-4-i) When applying the method of 4-1-A, since M is greater than N, the UE may pad L bits of zeros at the beginning or end of the information field so that each information field of the DCI indicated in the active BWP has the same number of bits as the number of LBT sub-bands in the new BWP to which the UE is to switch, and then interpret the information field. For example, the information field can be the LBT sub-band indication field. Since N = 1, K = 0.

[0410] 4-3-4-ii) When the method of 4-1-B is applied, since M is greater than N, the UE may pad zeros at the beginning or end of the K MSB of the FDRA field so that the K MSB of the FDRA field matches the number of LBT subbands in the new BWP to be switched to, and then interpret the FDRA field of the DCI indicated in the active BWP. For example, the information field may be an LBT subband indication field. Since N=1, K=0.

[0411] 4-3-3-iii) When the method of 4-1-C is applied, since M is greater than N, the UE may pad the beginning or end of the K LSB of the FDRA field with zeros so that the K LSB of the FDRA field matches the number of LBT subbands in the new BWP to be switched to after interpreting the FDRA field of the DCI indicated in the active BWP.

[0412] 4-3-4-iv) In 4-3-4i to 4-3-4iii, since N=1, the UE interprets the information field of the LBT subband allocated to the new BWP to be switched to as all zeros after zero padding.

[0413] 4-3-4-v) In the case of allocating LBT subbands by bitmap, when the BS indicates all bits of the information field as 0, the indication may be processed as invalid. However, in 4-3-4, even when the BS does not indicate all bits of the field as 0, the UE should interpret all bits as 0, so it may be difficult to process the indication as invalid. Therefore, when all bits in the information field for allocating LBT subbands during BWP switching are interpreted as 0, the following operation may be defined.

[0414] 4-3-4-v-1) A field with all bits set to 0 is interpreted as the LBT subband with the lowest (or highest) index (or frequency) configured in the new BWP to be switched to. Therefore, the UE interprets the field with all bits set to 0 to indicate and / or allocate the LBT subband with the lowest (or highest) index (or frequency) configured in the new BWP to be switched to. For example, the LBT subband index #0 of the new BWP to be switched to may be configured for the UE.

[0415] 4-3-4-v-2) A field with all bits set to 0 may be interpreted as an LBT subband index indicated by higher-layer signaling (eg, SIB or dedicated RRC signaling) from the BS.

[0416] 4-3-4-v-3) A field with all bits set to 0 may be interpreted as all LBT subbands configured in the new BWP to be switched to. Therefore, the UE interprets a field with all bits set to 0 as indicating and / or allocating the entire set of LBT subbands configured in the new BWP to be switched to.

[0417] In addition, as the BWP assigned to the UE changes, the parameter set may also change. When the SCS changes, the bit size used for scheduling the interleaving index (i.e., X bits of the FDRA field in the UL grant in 38.212, where X=5 for 30kHz SCS and X=6 for 15kHz SCS) also changes. Characteristically, Y bits of the FDRA field are used to allocate RB sets. RB sets refer to LBT subbands in this specification. Additional UE operations are proposed through the following examples.

[0418] 4-4-1) Case 1: When the SCS of the active BWP is 15kHz and the SCS of the new BWP to be switched to is 30kHz (ie, when the X-bit field size needs to be reduced from 6 to 5), the following operations may be performed.

[0419] 4-4-1-A) When the method of 4-1-A is applied (when the X-bit field and the Y-bit field are independently configured), according to the 5 bits of the field indicating the interleaving index according to the parameter set of the new BWP to be switched to among the information fields including the interleaving index indication field in the DCI indicated in the active BWP, the UE may interpret only the first 5 bits (i.e., 5 MSBs) or the last 5 bits (i.e., 5 LSBs) as the allocation information of the interleaving index of the new BWP to be switched to. Each information field including the interleaving index indication field may include a 6-bit field indicating the interleaving index.

[0420] 4-4-1-B) When the method of 4-1-B is applied, when the FDRA field includes a total of X+Y bits (where Y is the number of MSBs and X is the number of LSBs), based on the 5 bits that are a field indicating the interleaving index according to the parameter set of the new BWP to be switched to, the UE may interpret only the first 5 bits (i.e., 5 MSBs) or the last 5 bits (i.e., 5 LSBs) of the 6 LSBs of the FDRA field in the DCI indicated in the active BWP as allocation information of the interleaving index in the new BWP to be switched to.

[0421] 4-4-1-C) When the method of 4-1-C is applied, that is, when the FDRA field includes a total of X+Y bits (where X is the number of MSBs and Y is the number of LSBs), according to the 5-bit field that indicates the interleaving index according to the parameter set of the new BWP to be switched to, the UE may interpret only the first 5 bits (i.e., 5 MSBs) or the last 5 bits (i.e., 5 LSBs) of the 6 MSBs of the FDRA field in the DCI indicated in the active BWP as allocation information of the interleaving index in the new BWP to be switched to.

[0422] 4-4-2) Case 2: When the SCS of the active BWP is 30kHz and the SCS of the new BWP to be switched to is 15kHz (ie, when the X-bit field size needs to be increased from 5 to 6), the following operations may be performed.

[0423] 4-4-2-A) When the method of 4-1-A is applied (when the X-bit field and the Y-bit field are independently configured), the UE may fill zeros at the beginning or end of each information field including the index indication field in the DCI indicated in the active BWP so that the information field can match the 6 bits of the interleaved index indication field according to the parameter set of the new BWP to be switched to, and then interpret the information field.

[0424] 4-4-2-B) When the method of 4-1-B is applied (when the FDRA field includes a total of X+Y bits, where Y is the number of MSBs and X is the number of LSBs), the UE may fill the beginning or end of the 5LSBs of the FDRA field in the DCI indicated in the active BWP with zeros so that the 5LSBs of the FDRA field can match the 6 bits that are the interleaving index indication field according to the parameter set of the new BWP to be switched to, and then interpret the FDRA field.

[0425] 4-4-2-C) When the method of 4-1-C is applied (when the FDRA field includes a total of X+Y bits, where X is the number of MSBs and Y is the number of LSBs), the UE may fill the beginning or end of the 5MSBs of the FDRA field in the DCI indicated in the active BW with zeros so that the 5MSBs of the FDRA field can match the 6 bits that are the interleaving index indication field according to the parameter set of the new BWP to be switched to, and then interpret the FDRA field.

[0426] Implementation Example

[0427] Fig.16 is a flowchart illustrating a signal transmission / reception method according to an embodiment of the present disclosure.

[0428] Reference Fig.16 , the embodiments of the present disclosure may be performed by a UE, and include receiving a DCI ( S1601 ) and sending a PUSCH based on the DCI ( S1603 ).

[0429] Specifically, the DCI may include frequency resource allocation information about the PUSCH and information about the BWP to be transmitted for the PUSCH. The frequency resource allocation information may be included in the FDRA field. The information about the BWP may be included in the Bandwidth Part Indicator (BI) field.

[0430] The PUSCH may be transmitted based on one of the methods proposed in Embodiments 1 to 4. For example, the PUSCH transmission may be performed based on Embodiment 4.

[0431] According to 4-2 of Embodiment 4, BWP switching may occur through DCI. Therefore, the UE may transmit a PUSCH in a specific BWP different from the current BWP based on the DCI.

[0432] Referring to 4-1 of Embodiment 4, information about the RB set (or LBT subband) may be configured in a separate field or included in the FDRA field. For example, referring to 4-3-C, the FDRA field of the DCI may include a K LSB including information about the RB set. The FDRA field includes the K LSB and the MSB including information about the interleaving allocation. The UE transmits the PUSCH in the interleaving based on the information about the interleaving allocation.

[0433] In addition, regarding BWP switching, based on the method proposed in 4-3, DCI can be interpreted and PUSCH can be sent. For example, referring to 4-3-1-iii, when the FDRA field of DCI includes K LSBs providing information about RB sets according to 4-3-C, based on N being greater than M, only the LSB or L MSB among the K bits is interpreted as information about the RB set. In other words, based on N being greater than M, the MSB or LSB of the L bits among the K bits is truncated. The K bits are reduced to L bits by truncation. Referring to 4-3-3-iii, when the FDRA field of DCI includes K LSBs providing information about RB sets according to 4-3-C, based on N being less than M, zeros are padded at the beginning or end of the K bits. The K bits are increased to L bits by zero padding.

[0434] It can be concluded from 4-3-1-iii and 4-3-3-iii that based on the fact that the number N of RB sets configured in the current active BWP is different from the number of RB sets configured in a specific BWP, K bits are changed (e.g., increased or decreased) to L bits.

[0435] The UE determines the RB set on which LBT is to be performed based on L bits instead of K bits. The UE performs a channel access procedure (CAP) for the RB set determined based on the L bits, and transmits a PUSCH based on a result of the CAP.

[0436] Reference Figures 1 to 16 The operations described in the description and / or one or more of the operations described with reference to Embodiment 1 to Embodiment 4 may be further combined with the Fig.16 The operations described are performed in combination.

[0437] Example of a communication system to which the present disclosure is applied

[0438] The various descriptions, functions, processes, proposals, methods and / or operational flowcharts of the present disclosure described herein may be applied to (but not limited to) various fields (e.g., 5G) where wireless communication / connection between devices is required.

[0439] More specific examples will be described below with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise specified, similar reference numerals represent the same or corresponding hardware blocks, software blocks or functional blocks.

[0440] Fig.17 A communication system 1 applied to the present disclosure is shown.

[0441] Reference Fig.17 , the communication system 1 applied to the present disclosure includes a wireless device, a BS, and a network. The wireless device is a device that performs communication using a radio access technology (RAT) (e.g., 5G NR (or new RAT) or LTE), also 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 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 vehicle-to-vehicle (V2V) communication. Herein, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). The XR device may include an augmented reality (AR) / virtual reality (VR) / mixed reality (MR) device, and may be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) installed in a vehicle, a television (TV), a smart phone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, and the like. Handheld devices may include smart phones, smart boards, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., laptop computers). Home appliances may include TVs, refrigerators, washing machines, etc. IoT devices may include sensors, smart meters, etc. For example, a BS and a network may be implemented as wireless devices, and a specific wireless device 200a may operate as a BS / network node for other wireless devices.

[0442] 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., side link communication) with each other without the intervention of the BS / network. For example, the vehicles 100b-1 and 100b-2 may perform direct communication (e.g., V2V / vehicle-to-everything (V2X) communication). 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.

[0443] Wireless communication / connection 150a, 150b, and 150c may be established between wireless devices 100a to 100f / BS 200 and between BSs 200. Herein, wireless communication / connection may be established through various RATs (e.g., 5G NR) such as UL / DL communication 150a, sidelink communication 150b (or D2D communication), or inter-BS communication (e.g., relay or integrated access backhaul (IAB)). Wireless signals may be sent and received between wireless devices, between wireless devices and BSs, and between BSs through wireless communication / connection 150a, 150b, and 150c. For example, signals may be sent and received via various physical channels through wireless communication / connection 150a, 150b, and 150c. To this end, at least a portion of various configuration information for configuring a process for sending / receiving wireless signals, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and a resource allocation process may be performed based on various proposals of the present disclosure.

[0444] Example of wireless device to which the present disclosure is applied

[0445] Fig.18 A wireless device suitable for use with the present disclosure is shown.

[0446] Reference Fig.18 , the first wireless device 100 and the second wireless device 200 may transmit wireless signals via various RATs (e.g., LTE and NR). {The first wireless device 100 and the second wireless device 200} may correspond to Fig.17 {wireless device 100x and BS 200} and / or {wireless device 100x and wireless device 100x}.

[0447] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and 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 description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. For example, the processor 102 may process the information in the memory 104 to generate first information / signals, and then transmit a wireless signal including the first information / signals through the transceiver 106. The processor 102 may receive a wireless signal including second information / signals through the transceiver 106, and then store information obtained by processing the second information / signals in the memory 104. The memory 104 may be connected to the processor 102, and may store various information related to the operation of the processor 102. For example, the memory 104 may store software codes including instructions for executing all or part of the processing controlled by the processor 102 or for executing the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. 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 transmit and / or receive wireless signals through one or more antennas 108. Each transceiver 106 may include a transmitter and / or a receiver. The transceiver 106 may be used interchangeably with a radio frequency (RF) unit. In the present disclosure, the wireless device may be a communication modem / circuit / chip.

[0448] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and also include one or more transceivers 206 and / or one or more antennas 208. The processor 202 may control the memory 204 and / or the transceiver 206, and may be configured to implement the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. For example, the processor 202 may process the information in the memory 204 to generate third information / signals, and then transmit a wireless signal including the third information / signals through the transceiver 206. The processor 202 may receive a wireless signal including fourth information / signals through the transceiver 106, and then store information obtained by processing the fourth information / signals in the memory 204. The memory 204 may be connected to the processor 202 and store various information related to the operation of the processor 202. For example, the memory 204 may store software codes including instructions for executing all or part of the processing controlled by the processor 202 or for executing the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. 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 transmit and / or receive wireless signals through one or more antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. The transceiver 206 may be used interchangeably with an RF unit. In the present disclosure, the wireless device may be a communication modem / circuit / chip.

[0449] Now, 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 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 physical (PHY), medium access control (MAC), radio link control (RLC), packet data convergence protocol (PDCP), RRC, and service data adaptation protocol (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, and provide these messages, control information, data, or information to one or more transceivers 106 and 206. 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 description, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document, and 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 obtain the PDU, SDU, message, control information, data, or information according to the description, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document.

[0450] 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. The descriptions, functions, processes, proposals, methods and / or operational flow charts 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 flow charts disclosed in this document may be included in one or more processors 102 and 202 or may be stored in one or more memories 104 and 204 and driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods and / or operational flow charts disclosed in this document may be implemented in the form of codes, instructions and / or instruction sets using firmware or software.

[0451] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, codes, instructions and / or commands. One or more memories 104 and 204 may be configured to include read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard drive, registers, cache memory, computer-readable storage media and / or combinations thereof. One or more memories 104 and 204 may be located inside and / or outside of one or more processors 102 and 202. 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.

[0452] One or more transceivers 106 and 206 may send user data, control information and / or wireless signals / channels mentioned in the method and / or operation flow chart of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information and / or wireless signals / channels 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 may be connected to one or more processors 102 and 202 and send and receive wireless signals. For example, one or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may send user data, control information or wireless signals to one or more other devices. One or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may receive user data, control information or wireless signals from one or more other devices. 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 and 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 the received wireless signals / channels from RF band signals to baseband signals so as to process the received user data, control information and wireless signals / channels using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert the user data, control information and wireless signals / channels processed using one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more of the transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0453] Example of use of wireless device to which the present disclosure is applied

[0454] Fig.19 Another example of a wireless device applicable to the present disclosure is shown. The wireless device can be used according to the usage / service (refer to Fig.17 ) are implemented in various forms.

[0455] Reference Fig.19 , the wireless devices 100 and 200 may correspond to Fig.18The wireless devices 100 and 200 of the present invention may be configured to include various elements, components, units / portions 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 110 may include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 may include Fig.18 One or more processors 102 and 202 and / or one or more memories 104 and 204. For example, the transceiver 114 may include Fig.18 The control unit 120 is electrically connected to the communication unit 110, the memory 130, and the additional components 140, and provides overall control 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 / instruction / information stored in the memory unit 130. The control unit 120 may send information stored in the memory unit 130 to the outside (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface, or store information received from the outside (e.g., other communication devices) via the communication unit 110 in the memory unit 130 through a wireless / wired interface.

[0456] The additional component 140 may be configured in various ways 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 configured in (but not limited to) a robot ( Fig.17 100a), vehicles ( Fig.17 100b-1 and 100b-2), XR devices ( Fig.17 100c), handheld device ( Fig.17 100d), household appliances ( Fig.17 100e), IoT devices ( Fig.17 100f), digital broadcasting terminal, holographic device, public safety device, MTC device, medical device, fintech device (or financial device), security device, climate / environmental device, AI server / device ( Fig.17 400), BS( Fig.17 200), network nodes, etc. Depending on the use case / service, the wireless device can be mobile or fixed.

[0457] exist Fig.19In the wireless devices 100 and 200, various elements, components, units / parts and / or modules in the wireless devices 100 and 200 may all be connected to each other through a wired interface, or at least a part thereof may be wirelessly connected through the communication unit 110. For example, in each of the wireless devices 100 and 200, the control unit 120 and the communication unit 110 may be wired, and the control unit 120 and the first unit (e.g., 130 and 140) may be wirelessly connected through the communication unit 110. The various elements, components, units / parts and / or modules in the wireless devices 100 and 200 may also include one or more elements. For example, the control unit 120 may be configured using a collection of one or more processors. For example, the control unit 120 may be configured using a collection of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing unit and a memory control processor. In another example, the memory 130 may be configured using RAM, dynamic RAM (DRAM), ROM, flash memory, volatile memory, non-volatile memory and / or a combination thereof.

[0458] Examples of vehicles or autonomous driving vehicles to which the present disclosure is applied

[0459] Fig. 20 A vehicle or an autonomous vehicle applied to the present disclosure is shown. The vehicle or the autonomous vehicle may be implemented as a mobile robot, a car, a train, a manned / unmanned aerial vehicle (AV), a ship, etc.

[0460] Reference Fig. 20 , the vehicle or autonomous driving vehicle 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a drive unit 140a, a power supply unit 140b, a sensor unit 140c, and an autonomous driving unit 140d. The antenna unit 108 may be configured as a part of the communication unit 110. Blocks 110 / 130 / 140a to 140d correspond to Fig.19 Block 110 / 130 / 140.

[0461] The communication unit 110 may send and receive signals (e.g., data and control signals) to and from external devices such as other vehicles, BSs (e.g., gNBs and roadside units), and servers. The control unit 120 may perform various operations by controlling elements of the vehicle or autonomous driving vehicle 100. The control unit 120 may include an ECU. The drive unit 140a may enable the vehicle or autonomous driving vehicle 100 to travel on a road. The drive unit 140a may include an engine, a motor, a power system, wheels, brakes, a steering device, etc. The power supply unit 140b may supply power to the vehicle or autonomous driving vehicle 100, and include a wired / wireless charging circuit, a battery, etc. The sensor unit 140c may obtain information about the vehicle status, surrounding environment information, user information, etc. The sensor unit 140c may include an inertial measurement unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, a slope sensor, a weight sensor, a heading sensor, a position module, a vehicle forward / reverse sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, a lighting sensor, a pedal position sensor, etc. The autonomous driving unit 140d may implement a technology for maintaining a lane in which the vehicle is traveling, a technology for automatically adjusting a speed (e.g., adaptive cruise control), a technology for autonomously traveling along a determined path, a technology for traveling by automatically setting a route if a destination is set, and the like.

[0462] For example, the communication unit 110 may receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d may generate an autonomous driving route and a driving plan from the obtained data. The control unit 120 may control the drive unit 140a so that the vehicle or the autonomous driving vehicle 100 may move along the autonomous driving route according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit 110 may aperiodically / periodically obtain the latest traffic information data from the external server and obtain surrounding traffic information data from neighboring vehicles. During autonomous driving, the sensor unit 140c may obtain information about the vehicle state and / or surrounding environment information. The autonomous driving unit 140d may update the autonomous driving route and driving plan based on the newly obtained data / information. The communication unit 110 may transmit information about the vehicle position, autonomous driving route, and / or driving plan to an external server. The external server may predict traffic information data using AI technology based on information collected from the vehicle or autonomous driving vehicle, and provide the predicted traffic information data to the vehicle or autonomous driving vehicle.

[0463] Those skilled in the art will appreciate that the present disclosure may be implemented in other specific ways than those described herein without departing from the spirit and essential characteristics of the present disclosure. Therefore, the above-described embodiments are to be interpreted in all respects as being illustrative and not restrictive. The scope of the present disclosure should be determined by the appended claims and their legal equivalents (rather than the above description), and all changes falling within the meaning and equivalent scope of the appended claims are intended to be included therein.

[0464] Industrial Applicability

[0465] As described above, the present disclosure is applicable to various wireless communication systems.

Claims

1. A method for sending and receiving signals by a user equipment UE in a wireless communication system, the method comprising the following steps: Receiving downlink control information DCI; as well as Sending a physical uplink shared channel PUSCH based on the DCI, wherein, based on the DCI, the PUSCH is sent in a specific BWP different from the current active bandwidth part BWP, wherein the frequency domain resource assignment FDRA field of X+Y bits in the DCI includes X most significant bits MSB containing information about interleaving allocation and Y least significant bits LSB containing information about a resource block RB set, and the RB set is a continuous RB set on which a channel access procedure CAP is performed in a shared spectrum, Wherein, based on the fact that the number N of RB sets configured in the currently active BWP is different from the number M of RB sets configured in the specific BWP, the Y bit is changed to the Y' bit, and each of N and M is an integer less than 6, wherein, based on the first subcarrier spacing SCS configured for the currently active BWP being different from the second SCS configured for the specific BWP, the X bit is changed to an X' bit, wherein the RB set associated with the PUSCH is determined based on the Y' bit, and the interleaving associated with the PUSCH is determined based on the X' bit, and Wherein, after performing the CAP on the RB set, the PUSCH is sent through the interleaved resource blocks in the determined RB set.

2. The method according to claim 1, wherein: Based on N being greater than M, the Y bits are reduced to the Y′ bits by truncating the most significant bit MSB of Y′ among the Y bits.

3. The method according to claim 1, wherein: Based on N being less than M, the Y bits are increased to the Y′ bits by padding zeros before the Y bits.

4. A user equipment UE for sending and receiving signals in a wireless communication system, the UE comprising: at least one transceiver; at least one processor; as well as at least one memory operatively coupled to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform specific operations, The specific operations include: receiving downlink control information DCI; and Sending a physical uplink shared channel PUSCH based on the DCI, wherein, based on the DCI, the PUSCH is sent in a specific BWP different from the current active bandwidth part BWP, wherein the frequency domain resource assignment FDRA field of X+Y bits in the DCI includes X most significant bits MSB containing information about interleaving allocation and Y least significant bits LSB containing information about a resource block RB set, and the RB set is a continuous RB set on which a channel access procedure CAP is performed in a shared spectrum, Wherein, based on the fact that the number N of RB sets configured in the currently active BWP is different from the number M of RB sets configured in the specific BWP, the Y bit is changed to the Y' bit, and each of N and M is an integer less than 6, wherein, based on the first subcarrier spacing SCS configured for the currently active BWP being different from the second SCS configured for the specific BWP, the X bit is changed to an X' bit, wherein the RB set associated with the PUSCH is determined based on the Y' bit, and the interleaving associated with the PUSCH is determined based on the X' bit, and Wherein, after performing the CAP on the RB set, the PUSCH is sent through the interleaved resource blocks in the determined RB set.

5. The UE according to claim 4, wherein: Based on N being greater than M, the Y bits are reduced to the Y′ bits by truncating the most significant bit MSB of Y′ among the Y bits.

6. The UE according to claim 4, wherein: Based on N being less than M, the Y bits are increased to the Y′ bits by padding zeros before the Y bits.

7. A device for a user equipment UE, the device comprising: at least one processor; as well as at least one computer memory operatively coupled to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations, The operations include: receiving downlink control information DCI; and Sending a physical uplink shared channel PUSCH based on the DCI, wherein, based on the DCI, the PUSCH is sent in a specific BWP different from the current active bandwidth part BWP, wherein the frequency domain resource assignment FDRA field of X+Y bits in the DCI includes X most significant bits MSB containing information about interleaving allocation and Y least significant bits LSB containing information about a resource block RB set, and the RB set is a continuous RB set on which a channel access procedure CAP is performed in a shared spectrum, Wherein, based on the fact that the number N of RB sets configured in the currently active BWP is different from the number M of RB sets configured in the specific BWP, the Y bit is changed to the Y' bit, and each of N and M is an integer less than 6, wherein, based on the first subcarrier spacing SCS configured for the currently active BWP being different from the second SCS configured for the specific BWP, the X bit is changed to an X' bit, wherein the RB set associated with the PUSCH is determined based on the Y' bit, and the interleaving associated with the PUSCH is determined based on the X' bit, and Wherein, after performing the CAP on the RB set, the PUSCH is sent through the interleaved resource blocks in the determined RB set.

8. The device according to claim 7, wherein: Based on N being greater than M, the Y bits are reduced to the Y′ bits by truncating the most significant bit MSB of Y′ among the Y bits.

9. The device according to claim 7, wherein: Based on N being less than M, the Y bits are increased to the Y′ bits by padding zeros before the Y bits.

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