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

Abstract

According to an embodiment of the present invention, a method and apparatus for sending and receiving signals in a wireless communication system include: iteratively mapping a PUCCH sequence to each resource block (RB) within an interlace; and sending the PUCCH on the interlace, wherein a phase shift (PS) value of the PUCCH sequence may be changed based on an RB index of each RB.

Description

Technical Field

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

[0002] In general, wireless communication systems are developing to cover a wide range of areas 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, a 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, and the like. 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 objectives achievable by the present disclosure are not limited to those specifically described above, and the above and other objectives achievable 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] In one aspect of the present disclosure, a method for transmitting and receiving signals by a user equipment (UE) operating in a wireless communication system is provided. The method may include the following steps: repeatedly mapping a physical uplink control channel (PUCCH) sequence to each resource block (RB) in an interlace; and transmitting a PUCCH including the PUCCH sequence in the interlace. A phase shift (PS) value of the PUCCH sequence may vary according to the RB index of each RB.

[0009] In another aspect of the present disclosure, a communication device (UE) configured to transmit and receive signals in a wireless communication system is provided. The communication device may include: at least one transceiver; at least one processor; and at least one memory operatively connected to the at least one processor and configured to store instructions that, when executed, cause the at least one processor to perform operations including: repeatedly mapping a PUCCH sequence to each RB in an interlace; and transmitting a PUCCH including the PUCCH sequence in the interlace. The PS value of the PUCCH sequence may vary depending on the RB index of each RB.

[0010] In another aspect of the present disclosure, a device for a UE is provided. The device may include: at least one processor; and at least one computer memory operatively connected to the at least one processor and configured to store instructions that, when executed, cause the at least one processor to perform operations including: repeatedly mapping a PUCCH sequence to each RB in an interlace; and transmitting a PUCCH including the PUCCH sequence in the interlace. The PS value of the PUCCH sequence may vary according to the RB index of each RB.

[0011] In another aspect of the present disclosure, a computer-readable storage medium having at least one computer program is provided that, when executed, causes at least one processor to perform operations. These operations may include: repeatedly mapping a PUCCH sequence to each RB in an interlace; and transmitting a PUCCH including the PUCCH sequence in the interlace. The PS value of the PUCCH sequence may vary according to the RB index of each RB.

[0012] In the method and apparatus, a PS value may be determined by a specific pattern to have a value for each RB.

[0013] In the method and apparatus, a specific pattern may be determined such that the PS value of the RB with the lowest index in the interlace is fixed to 1 and the PS values ​​to be applied to the remaining RBs in the interlace are selected based on the peak-to-average power ratio (PAPR) and the cubic metric (CM).

[0014] In the method and apparatus, RB indexes may be sequentially assigned to RBs based on frequency positions of the RBs in an interlace.

[0015] In the method and apparatus, a cyclic shift (CS) value may be applied to each RB, and the CS value may vary according to an RB index of each RB.

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

[0017] The above aspects of the present disclosure are only some preferred embodiments of the present disclosure. Those skilled in the art can 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 can transmit an uplink channel more efficiently in a manner different from that of the prior art.

[0020] Those skilled in the art will understand 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 Shows a self-contained slot structure.

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

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

[0026] Figure 6 An exemplary method for 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] Figure 9 Resource block (RB) interleaving is shown.

[0029] Figures 10 to 25 is a diagram illustrating uplink (UL) channel transmission according to an embodiment of the present disclosure.

[0030] Figures 26 to 29 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), and single-carrier frequency division multiple access (SC-FDMA). 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)), IEEE 802.16 (Worldwide Interoperability for Microwave Access (WiMAX)), IEEE 802.20, Evolved UTRA (E-UTRA), etc. UTRA is part of the Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is 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 that goes beyond 3GPP TS 36.xxx version 8. Specifically, LTE technology that goes beyond 3GPP TS 36.xxx version 10 is called LTE-A, and LTE technology that goes beyond 3GPP TS 36.xxx version 13 is called LTE-A pro. 3GPP NR is a technology that goes beyond 3GPP TS 38.xxx version 15. LTE / NR may be referred to as a 3GPP system. "xxx" designates 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 prior to this disclosure. For example, reference may be made to the following documents.

[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 on a frame basis. 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 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 subfame，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)) consisting of the same number of symbols (for convenience, referred to as a time unit (TU)) may be configured differently between the aggregated cells.

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

[0053] The NR frequency band can be defined by two types of frequency ranges, FR1 and FR2. FR1 and FR2 can be configured as described in Table 3 below. FR2 can 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 slot includes multiple symbols in the time domain. For example, a 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) can be defined by multiple (e.g., 12) consecutive subcarriers in the frequency domain. A bandwidth part (BWP) can 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 can include up to N (e.g., 5) BWPs. Data communication can be carried out in an active BWP, and only one BWP can be enabled for a UE. Each element in the resource grid can be called a resource element (RE), to which a complex symbol can be mapped.

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

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

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

[0061] In the NR system, the frame has a self-contained structure in which DL control channels, DL or UL data, UL control channels, etc. can all be included in one time slot. For example, the first N symbols in the time slot (hereinafter referred to as the DL control region) can be used to send DL control channels, and the last M symbols in the time slot (hereinafter referred to as the UL control region) can be used to send UL control channels. N and M are integers greater than or equal to 0. The resource region (hereinafter referred to as 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 1CGs, all parameters for PUSCH transmissions may be signaled by higher layers. For type 2CGs, 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.). HARQ-ACK responses may include positive ACK (ACK), negative ACK (NACK), DTX (discontinuous transmission), or NACK / DTX. HARQ-ACK can be used interchangeably with A / N, ACK / NACK, HARQ-ACK / NACK, etc. HARQ-ACK can be generated based on TB / CBG.

[0070] - Channel State Information (CSI): CSI is feedback information about the DL channel. CSI includes Channel Quality Indicator (CQI), Rank Indicator (RI), Precoding Matrix Indicator (PMI), Precoding Type Indicator (PTI), etc.

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

[0077] -Transmission structure: Only the UCI signal is configured without DM-RS, and the UCI status is transmitted by selecting and sending 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 allocated 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) across multiple PUCCH resources (compliant with PUCCH format 1) within 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 (e.g., 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 allocated / mapped to different symbols based on time division multiplexing (TDM). The encoded 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 allocated / 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 can 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 the DL assignment to PDSCH offset K0 and the 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 RB set assigned to PDSCH.

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

[0097] -PDSCH to HARQ_feedback timing indicator: indicates K1.

[0098] After receiving the 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 a (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 a (DL / UL) UCC. A carrier / carrier frequency of a cell may refer to an operating frequency (e.g., center frequency) of the cell. A cell / carrier (e.g., CC) is generally referred to as a cell.

[0102] When BS and UE are 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 the primary CC (PCC) and the secondary CC (SCC) respectively. Figure 5 As shown in (b), signals are sent and received on one UCC or on multiple 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 transmission can be supported on the UCell.

[0103] Signal transmission and reception operations in the unlicensed band as described in this 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 for evaluating 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 unit of duration T sl＝ 9us sensing time slot. 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 When the sensing time slot duration is T sl is considered idle. Otherwise, the sensing slot duration is T sl CAP can also be called Listen Before Talk (LBT).

[0107] - Channel occupancy: Transmissions from the BS / UE on the channel after the 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. For COT determination, if a transmission gap is less than or equal to 25 μs, the gap duration may be counted towards the COT. The COT may be shared for transmissions between a BS and corresponding UE.

[0109] -DL transmission burst: A set of transmissions from a BS without any gaps greater than 16 us. Transmissions from a BS separated by gaps greater than 16 us 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 gaps greater than 16 us. Transmissions from a UE separated by gaps greater than 16 us are considered separate UL transmission bursts. A UE may transmit 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 to 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 occupancy method in the U-band is shown. According to the regional regulations of the U-band, a 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 are performing signal transmission. When other communication nodes do not perform signal transmission, it can be said that a clear 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 the UCell. The above-mentioned processes can all 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 flowchart illustrating a CAP operation performed by a BS to transmit a DL signal in a U-band.

[0121] Reference Figure 7 , BS can sense the channel after delaying for a duration 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 It 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 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 for all time slots 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 class.

[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 16us duration sl .

[0132] Satisfies the following relationship: CW min,p <=CW p <=CW max,p The CW p Available from CW p =CW min,p Initially configured and updated (CW size update) based on HARQ-ACK feedback (eg, ACK or NACK) for the previous DL burst (eg, PDSCH) before step 1. For example, CW p Can be initialized to CW based on HARQ-ACK feedback for previous DL burst min,p Alternatively, The 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 2 ADL CAP can be applied to the following transmissions. In Type 2 ADL CAP, the BS can transmit the data 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 immediately after the duration T f The duration of a sensing time slot is 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] - BS's transmission after a gap of 25 us 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 applies to transmissions performed by the BS within the shared channel occupation time and at most 16us after the UE's transmission. In Type 2C DL CAP, the BS does not perform channel sensing before performing a transmission.

[0139] UL signal transmission method in U-band

[0140] The UE may implement Type 1 or Type 2 CAP for UL signal transmission in the U-band. Typically, the UE may implement the CAP (e.g., Type 1 or Type 2) configured by the BS for UL signal transmission. For example, an 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 a Type 1 UL CAP, the length of the duration spanned by a sensing slot that is sensed as idle before a transmission is random. The 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 transmit a UL signal.

[0147] Reference Figure 8 , the UE can sense the channel after the 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 It 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) UE senses the channel until the additional delay duration T d A busy sensing time slot is detected 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 for all time slots 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]

[0158] 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). Tf Including the sensing time slot duration T at the beginning of 16us duration sl .

[0159] Satisfies the following relationship: CW min,p <=CW p <=CW max,p The 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. For example, CW p Can be initialized to CW based on explicit / implicit reception response to previous UL burst min,p Alternatively, The CW p May be increased to the next highest allowed value or left as is.

[0160] (2) Type 2 UL CAP method

[0161] In a Type 2 UL CAP, the length of the duration spanned by the sensing slot that is sensed as idle before transmission may be determined. Type 2 UL CAP is classified as Type 2A / 2B / 2C UL CAP. In a Type 2A UL CAP, the UE may determine the duration of the sensing slot that is 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 immediately after the duration 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 use a sensing time slot at the beginning of the sensing time slot. f = Transmission is performed immediately after the channel is sensed as idle within 16us. In Type 2B UL CAP, T f A sensing slot is included 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.

[0162] RB interweaving

[0163] Figure 9 RB interleaving is shown. In a shared spectrum, taking into account the provisions on occupied channel bandwidth (OCB) and power spectral density (PSD), a set of non-contiguous RBs (at regular intervals) in the frequency domain (or a single RB) can be defined as a resource unit used / allocated to transmit UL (physical) channels / signals. For convenience, such a set of non-contiguous RBs is defined as an RB interleave (or interleave).

[0164] Reference Figure 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 RBs may include PRBs. 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., a UE) may use one or more interlaces to transmit a signal / channel. The signal / channel may include a PUCCH or a PUSCH.

[0165] 3. PUCCH transmission in U band

[0166] The above description (NR frame structure, RACH, U-band system, etc.) is applicable to the combination with the method proposed in the present disclosure, which will be described later. Alternatively, the description can clarify the technical features of the method proposed in the present disclosure.

[0167] In addition, the PRACH preamble code design method described later may be related to UL transmission. Therefore, these methods can also be applied to the above-mentioned UL signal transmission method in the U-band system. In order to implement the technical concept of this disclosure in corresponding systems, the terms, expressions, and structures in this document may be modified to be suitable for these systems.

[0168] 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.

[0169] As mentioned 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 higher 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 that specific frequency band.

[0170] In this document, the term "U-band" is used interchangeably with the term "shared spectrum."

[0171] In the legacy NR system, five PUCCH formats are configured from PUCCH format 0 to PUCCH format 4 as shown in Table 4 above. PUCCH formats 0, 1, and 4 are configured to occupy a single PRB, and PUCCH formats 2 and 3 are configured to occupy 1 to 16 PRBs on an OFDM symbol.

[0172] Below, the PUCCH format used in the shared spectrum will be described. When a specific device (and / or node) sends a signal in the shared spectrum, there may be a PSD limitation. For example, according to the European Telecommunications Standards Institute (ETSI) regulations, signal transmission in a specific frequency band needs to meet a PSD of 10dBm / 1MHz. When the SCS is 15kHz, if the PUCCH is sent in PUCCH format 0 (one PRB and 180kHz), the maximum allowed power of the PUCCH may be approximately 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 a UL signal 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. As a regulation in the shared spectrum, there may be an OCB limitation. For example, when a specific device sends a signal, the signal may need to occupy at least 80% of the system bandwidth. If the system bandwidth is 20 MHz, the signal transmitted by a particular device may need to occupy more than 16 MHz (80% of 20 MHz).

[0173] As a PUCCH structure that takes into account PSD and OCB regulations, the above-mentioned RB interleaving structure can be used. For example, if the PUCCH sequence of the conventional PUCCH configured to use one PRB as in PUCCH format 0 and / or 1 is repeated on PRBs separated by a specific interval in the frequency domain considering OCB, the PUCCH can be configured. If PUCCH is transmitted in RB interleaving, the same PUCCH sequence can be transmitted repeatedly. Repeated transmission may increase the peak-to-average power ratio (PAPR) value and the cubic metric (CM) value. However, the lower the PAPR value and the CM value, the better the transmission performance. Therefore, a method for selecting a cyclic shift (CS) value and / or a phase shift (PS) value of the PUCCH sequence for each repetition considering PAPR and CM when transmitting PUCCH in RB interleaving in the frequency domain will be proposed.

[0174] The methods proposed in this disclosure can be applied to other use cases as well as the NR U-band. For example, the methods proposed in this disclosure can be used in NR-based non-terrestrial networks (NTNs).

[0175] 3.1 Implementation Method 1

[0176] According to embodiment 1, when a PUCCH sequence is transmitted in a PRB, the starting CS value to be applied to the PUCCH sequence may be set differently from each other. Hereinafter, the PUCCH sequence may be simply referred to as a sequence. The starting CS value may be represented by CS_start.

[0177] Specifically, a single PUCCH signal can be configured with multiple PUCCH sequences. Multiple PUCCH sequences can be repeatedly mapped and / or transmitted on multiple PRBs included in one interlace. For example, when there are multiple PRBs included in one interlace, a separate / independent PUCCH sequence can be mapped to each PRB and / or transmitted in each PRB. The CS value applied to each sequence can be configured to have a different value for each PRB.

[0178] By applying PS to each element / sample included in a (frequency domain) sequence and / or the subcarrier to which the element / sample is mapped, CS can be set and / or applied to different values. For example, if CS=a is multiplied by the set of L elements / samples included in a length L sequence {s_0, s_1, ..., s_(L-1)}, the sequence to which CS is applied can be given by {e j*0*a *s_0,e j*1*a *s_1,…,e j*(L-1)*a *s_(L-1)}.

[0179] As an example, considering the transmission of 2-bit UCI on PUCCH format 0 (PF0) (referred to as 2-bit UCI on PF0), the 2-bit UCI can be represented by four CS values: CS_start, CS_start+3, CS_start+6, and CS_start+9. In this case, different CS_start values ​​can be applied to each PRB (or sequence). For example, the CS_start value can be determined as a function of the PRB index (in the PUCCH) included in the PUCCH resource. As an input value for determining the CS_start value, the PRB index can be referred to as a logical PRB index. In addition, the CS_start value can be configured to have a specific pattern for each PRB (or sequence). Hereinafter, the PRB index can be used interchangeably with the logical PRB index.

[0180] As another example, considering the transmission of 2-bit UCI on PUCCH format 1 (PF1) (referred to as 2-bit UCI on PF1), the CS value corresponding to CS_start may be applied to the sequence mapped to both the UCI symbol and the DMRS symbol. In this case, the CS_start value may vary for each PRB (or sequence). For example, the CS_start value may be determined as a function of the PRB index (in the PUCCH) included in the PUCCH resource. In addition, the CS_start value may be configured to have a specific pattern for each PRB (or sequence). In this case, the 2-bit UCI may be mapped to the UCI symbol based on quadrature phase shift keying (QPSK).

[0181] A pre-given / configured CS value may be present when generating the PUCCH sequences for PF0 and PF1. The pre-given / configured CS value may be used for inter-cell interference randomization. When the pre-given and / or configured CS value is assumed to be CS=a, a CS (or CS_start) value determined according to various embodiments may be additionally applied to the sequence obtained by applying CS=a.

[0182] As described above, when different (starting) CS values ​​are applied to PUCCH sequences, PUCCH sequences with different CS values ​​can be mapped to respective PRBs, thereby having advantages in terms of PAPR and / or CM performance. If there are 10 PRBs and the length of each sequence is 12, the method described in embodiment 1 can be as follows: Figure 10 Shown as shown.

[0183] For example, when a method of applying a different CS to each PRB is reflected in the sequence generation formulas of PF0 and PF1, it can be expressed as follows.

[0184] (1)PF0

[0185] The base sequence of PF0 is defined according to Formula 1.

[0186] [Formula 1]

[0187]

[0188] In Equation 1, n represents the length of the PUCCH sequence and is given by Definition. In the traditional NR system, since PF0 is sent in one RB, On the other hand, in NR-U, PF0 can be transmitted on multiple PRBs. Therefore, when PF0 is transmitted in NR-U, the method of applying different CSs to each PRB can be expressed as Equation 2.

[0189] [Formula 2]

[0190]

[0191] In Equation 2, i represents the PRB index and is given by definition. Indicates the total number of PRBs used to (repeatedly) transmit the corresponding PUCCH. In this case, α indicating CS i It may vary according to the PRB index.

[0192] (2)PF1

[0193] The base sequence of PF0 is defined according to Equations 3 and 4.

[0194] [Formula 3]

[0195]

[0196] [Formula 4]

[0197]

[0198] Similar to PF0, n is the length of the PUCCH sequence and is determined by Definition. In the traditional NR system, since PF0 is sent in one RB, On the other hand, in NR-U, PF0 can be transmitted on multiple PRBs. Therefore, when PF1 is transmitted in NR-U, the method of applying different CSs to each PRB can be expressed as Equations 5 and 6.

[0199] [Formula 5]

[0200]

[0201] [Formula 6]

[0202]

[0203] In Equations 5 and 6, i represents the PRB index and is given by express. Indicates the total number of PRBs used to (repeatedly) transmit the corresponding PUCCH. In this case, α indicating CS i It may vary according to the PRB index.

[0204] Hereinafter, Embodiment 1 will be described in more detail.

[0205] Implementation Method 1-1

[0206] A starting CS value applied to a PUCCH sequence to be repeatedly transmitted in each of a plurality of PRBs included in one interlace may be configured to have different values ​​for respective PRB groups.

[0207] According to embodiment 1-1, PRBs included in one interlace may be divided into two or more groups.

[0208] As an example, when one interlace includes two groups, the two groups may be defined as follows: a PRB group of even-numbered PRBs and a PRB group of odd-numbered PRBs. The PRB group of even-numbered PRBs may include PRBs with PRB indices 0, 2, 4, ..., and the PRB group of odd-numbered PRBs may include PRBs with PRB indices 1, 3, 5, .... The CS_start value to be applied to the PRB group of even-numbered PRBs may be X, and the CS_start value to be applied to the PRB group of odd-numbered PRBs may be Y, where X and Y have different values. For example, X=0 and Y=1.

[0209] As another example, one interlace may include three groups. The first group may consist of PRBs with PRB indices 0, 3, 6, and 9. The second group may consist of PRBs with PRB indices 1, 4, and 7 or 1, 4, 7, and 10. The third group may consist of PRBs with PRB indices 2, 5, and 8. The CS_start values ​​to be applied to the first, second, and third groups may be X, Y, and Z, respectively, where X, Y, and Z have different values. For example, X=0, Y=1, and Z=2.

[0210] The starting CS value may be indicated by the BS to the UE via higher layer signaling. Alternatively, the starting CS value may be pre-configured between the BS and the UE.

[0211] For example, two PRB groups may be defined as follows: a PRB group of odd-numbered PRBs and a PRB group of even-numbered PRBs. The CS_start value to be applied to the PRB group of even-numbered PRBs may be X, and the CS_start value to be applied to the PRB group of odd-numbered PRBs may be Y. In this case, initialcyclicshift_evennumberedPRB and initialcyclicshift_oddnumberedPRB may be introduced into the RRC parameters PUCCH-format0 and PUCCH-format1, and the CS_start value may be indicated by the corresponding parameters. For example, the BS may inform the UE of initialcyclicshift_evennumberedPRB=0 and initialcyclicshift_oddnumberedPRB=1 to indicate the values ​​of X and Y, respectively.

[0212] Table 7 shows PAPR and CM measured while changing the starting CS value according to embodiment 1-1 for an interlace consisting of 10 PRBs.

[0213] [Table 7]

[0214] The starting CS value of each PRB PAPR(dB) CM(dB) [0,0,0,0,0,0,0,0,0,0] 8.675 10.062 [0,1,0,1,0,1,0,1,0,1] 7.6001 8.218 [0,1,2,0,1,2,0,1,2,0] 6.7929 7.286 [0,1,2,3,4,0,1,2,3,4] 5.6803 5.057

[0215] Implementation 1-2

[0216] A starting CS value applied to a PUCCH sequence to be repeatedly transmitted in each of a plurality of PRBs included in one interlace may be configured to sequentially increase or decrease by a value of X according to a PRB index. In this document, X may be expressed as Δ.

[0217] The value of X can be set to be less than or equal to the sequence length.

[0218] The PRB index may be determined based on the frequency position of the PRBs included in the interlace. In other words, the PRB index may be determined as a logical PRB index. For example, among the PRBs included in one interlace, the PRB at the lowest position in the frequency domain may have a PRB index of 0, and the PRB at the second lowest position in the frequency domain may have a PRB index of 1. That is, the indexing may be performed sequentially until the PRB at the highest position in the frequency domain.

[0219] The CS value calculated based on the X value and the PRB index may be greater than the sequence length L. The actual CS value may be configured by wrapping the calculated CS value with respect to the sequence length so that the CS value is less than the sequence length L. Here, wrapping may be equivalent to a modulo or modulo operation. For example, the actual CS value may be obtained by applying a modulo operation to the calculated CS value.

[0220] Tables 8 to 10 show examples of obtaining the starting CS value by (X*i) modulo L operation when the PRB index is i and the sequence length is L. For example, when X=5, i=4, and L=12, the starting CS value becomes (5*4) modulo12=8. X*i can be obtained by m int express.

[0221] Table 8 shows the starting CS value of each PRB index when X=1.

[0222] [Table 8]

[0223] PRB Index 0 1 2 3 4 5 6 7 8 9 (10) Starting CS value 0 1 2 3 4 5 6 7 8 9 10

[0224] Table 9 shows the starting CS values ​​of each PRB index when X=5.

[0225] [Table 9]

[0226] PRB Index 0 1 2 3 4 5 6 7 8 9 (10) Starting CS value 0 5 10 3 8 1 6 11 4 9 2

[0227] Table 10 shows the starting CS value of each PRB index when X=2.

[0228] [Table 10]

[0229] PRB Index 0 1 2 3 4 5 6 7 8 9 (10) Starting CS value 0 2 4 6 8 10 0 2 4 6 8

[0230] The starting CS value may be indicated by the BS to the UE via higher layer signaling. Alternatively, the starting CS value may be pre-configured between the UE and the BS.

[0231] When the value of X and the sequence length L are coprime numbers, different CS values ​​can be applied to the PUCCH sequence to be repeatedly transmitted in each PRB, thereby achieving advantages in PAPR and / or CM performance. Table 11 shows the PAPR and CM values ​​depending on the value of X when one interlace consists of 10 PRBs. Referring to Table 11, it can be seen that the PAPR and CM values ​​are optimal when X = 5.

[0232] [Table 11]

[0233] X The starting CS value of each PRB PAPR(dB) CM(dB) 0 [0,0,0,0,0,0,0,0,0,0] 8.675 10.062 1 [0,1,2,3,4,5,6,7,8,9] 3.5401 1.569 5 [0,5,10,3,8,1,6,11,4,9] 3.5708 1.488 2 [0,2,4,6,8,10,0,2,4,6] 4.9783 3.461

[0234] CS value α applied to the traditional PUCCH sequence i It is derived from the following formula 7.

[0235] [Formula 7]

[0236]

[0237] In Equation 7, represents the time slot index in the radio frame used for PUCCH transmission. In addition, l represents the symbol index used for PUCCH transmission under the assumption that the first OFDM symbol index used for PUCCH transmission is 0, and l' represents the first OFDM symbol index used for PUCCH transmission in the time slot. Therefore, n cs It can be determined based on the time resources allocated to PUCCH. In addition, m0 is the PRB offset determined based on the RRC parameters, m cs It is a value determined based on a combination of the PUCCH format, the type of SR information to be transmitted, and HARQ information. Indicates the number of subcarriers in each RB and may be 12 as described above. Herein, a subcarrier may be referred to as an RE. The sequence length may not exceed the number of REs allocated for PUCCH transmission. In this specification, the expression "a PUCCH sequence is mapped to a PRB" or "a PUCCH sequence uses one PRB" may mean that the PUCCH sequence length L is 12.

[0238] Formula 8 shows that the starting CS value increases sequentially according to the PRB index by X value based on implementation mode 1-2.

[0239] [Formula 8]

[0240]

[0241] According to formula 8, since m int The value of X*i, so the starting CS value can be obtained by the sequence length L and by int It is obtained by a modulo operation between the value obtained by adding the value of and the value used for legacy PUCCH transmission.

[0242] 3.2. Implementation Method 2

[0243] According to embodiment 2, different PS values ​​may be multiplied by the PUCCH sequence for each PRB included in an interlace.

[0244] Specifically, a single PUCCH signal may be configured with multiple PUCCH sequences. These multiple PUCCH sequences may be repeatedly mapped and / or transmitted on multiple PRBs included in one interlace. For example, when there are multiple PRBs included in one interlace, a separate / independent PUCCH sequence may be mapped to each PRB and / or transmitted in each PRB. The PS value applied to each sequence may be configured to have different values ​​for each PRB. The (starting) CS value applied to each sequence may be set to the same value between PRBs (or sequences).

[0245] The same PS value can be multiplied by each element / sample included in a (frequency domain) sequence and / or the subcarrier mapped with the element / sample. For example, if PS=a is multiplied by a set of L elements / samples included in a length L sequence {s_0, s_1, ..., s_(L-1)}, the sequence to which PS is applied can be represented by {e j*a *s_0,e j*a *s_1,…,e j*a *s_(L-1)}.

[0246] As an example, considering 2-bit UCI on PF0, different PS values ​​may be multiplied with the PUCCH sequence for each PRB. For each PRB, the same CS values ​​of 0, 3, 6, and 9 may be applied to the PUCCH sequence. The different PS values ​​may be 1, 1i, -1, or -1i. In this case, the PS value may be configured to vary for each PRB (or sequence). For example, the PS value may be determined as a function of the PRB index (in the PUCCH) included in the PUCCH resource. As an input value for determining the PS value, the PRB index may be referred to as a logical PRB index. In addition, the PS value may be configured to have a specific pattern for each PRB (or sequence).

[0247] As another example, considering 2-bit UCI on PF1, different PS values ​​can be multiplied by the sequence mapped to the UCI symbol and the DMRS symbol for each PRB. The same CS value can be applied to the PUCCH sequence for each PRB. In this case, the PS value can be configured to vary for each PRB (or sequence). For example, the PS value can be determined as a function of the PRB index (in the PUCCH) included in the PUCCH resource. In addition, the PS value can be configured to have a specific pattern for each PRB (or sequence).

[0248] As described above, when different PS values ​​are multiplied by the PUCCH sequence, the PUCCH sequences with different PS values ​​can be mapped to each PRB, thereby having advantages in terms of PAPR and / or CM performance. In embodiment 1, CS is implemented in the frequency domain, and the PS value gradually increasing according to the RE index is reflected as the PS of each RE in the same PRB. On the other hand, according to embodiment 2, the same PS value is applied to each RE in the same PRB. If there are 10 PRBs, the method described in embodiment 2 can be as follows Figure 11 Shown as shown.

[0249] Hereinafter, Embodiment 2 will be described in more detail.

[0250] Implementation Method 2-1

[0251] A PS value to be multiplied by a PUCCH sequence to be repeatedly transmitted in each of a plurality of PRBs included in one interlace may be configured to have a specific pattern such that the PS value varies for each PRB.

[0252] A specific PS pattern may be set to values ​​obtained from experiments using four PS values ​​of 1, 1i, -1, and -1i.

[0253] Figure 12 The results of testing PAPR and CM performance in an interleaving structure consisting of 10 PRBs are shown by fixing the phase of the first PRB to 1 (i.e., 0°) and applying all four PS values ​​1, 1i, -1, -1i (i.e., 0°, 90°, 180°, and 270°) to the remaining 9 PRBs. Specifically, Figure 12 Combinations of the top 20 PS values ​​are shown based on CM performance. Figure 12 The 20 combinations shown can be regarded as PS value patterns of Embodiment 2.

[0254] Figure 13 The results of testing PAPR and CM performance in an interleaving structure consisting of 11 PRBs are shown by fixing the phase of the first PRB to 1 (i.e., 0°) and applying all four PS values ​​1, 1i, -1, -1i (i.e., 0°, 90°, 180°, and 270°) to the remaining 10 PRBs. Specifically, Figure 13 Combinations of the top 20 PS values ​​are shown based on CM performance. Figure 13 The 20 combinations shown can be regarded as PS value patterns of Embodiment 2.

[0255] In particular, the first four PS value patterns show better PAPR and CM performance than the other 16 PS value patterns. Figure 13In , indexes 43171, 532523, 421477, and 976621 can be regarded as PS combinations to be used in an interleaving structure consisting of 11 PRBs.

[0256] 3.3. Implementation Method 3

[0257] According to embodiment 3, different UCI bit-to-constellation mapping may be applied to each PRB.

[0258] Specifically, a single PUCCH signal may be configured with multiple PUCCH sequences. Multiple PUCCH sequences may be repeatedly mapped and / or transmitted on multiple PRBs included in one interlace. For example, when there are multiple PRBs included in one interlace, a separate / independent PUCCH sequence may be mapped to each PRB and / or transmitted in each PRB. Different UCI bit to constellation mappings may be configured and / or applied for each PRB. The same (starting) CS value and / or PS value may be applied to each PRB (or sequence).

[0259] As an example, considering a 2-bit UCI on PF0, different constellation mappings may be applied to respective PUCCH sequences repeatedly mapped and / or repeatedly transmitted in each of a plurality of PRBs included in one interlace while maintaining Gray coding for the bit set {00, 01, 11, 10} as follows: CS set 1 = {0+a, 3+a, 6+a, 9+a} and CS set 2 = {9+a, 6+a, 3+a, 0+a}, where a may be one of 0, 3, 6, and 9. Due to the constellation mapping, different CS sets and / or different a values ​​may be applied to respective PRBs. Gray coding refers to a coding scheme in which only one of adjacent digits changes when the value changes. For example, the number of cases that can be represented by an n-bit binary Gray code may be 2 n , and the binary Gray code can be represented differently 2 n Second-rate.

[0260] As another example, considering 2-bit UCI on PF1, different constellation mappings can be applied to the QPSK mapping on the UCI symbol for each PRB while maintaining Gray coding for the bit set {00, 01, 11, 10} as follows: PS set 1 = {1, 1i, -1, -1i}*b and PS set 2 = {-1i, -1, 1i, 1}*b, where b can be one of 1, 1i, -1, and -1i. Due to the constellation mapping, different PS sets and / or different b values ​​can be applied to each PRB. In addition, the application of PS to the DMRS sequence can be changed according to the constellation mapping in the UCI symbol. For example, the phase value to be applied to the DMRS sequence can be the phase value mapped to a specific bit in the UCI symbol. The specific bit can be, for example, bit 00.

[0261] According to Embodiment 3, since Gray coding is always maintained, PUCCH transmission performance can be guaranteed.

[0262] 3.4. Implementation Method 4

[0263] According to Embodiment Mode 4, Embodiment Mode 1 and Embodiment Mode 2 may be combined.

[0264] Specifically, according to Embodiment 1, a different CS value can be applied to each PRB, and according to Embodiment 2, a different PS value can be applied to each PRB. The number of different sequences generated by combining Embodiment 1 and Embodiment 2 is much greater than the number of different sequences generated by only Embodiment 1 or Embodiment 2 (respectively mapped to PRBs). Therefore, a lower PAPR / CM value (better performance) can be achieved by combining Embodiment 1 and Embodiment 2.

[0265] A single PUCCH signal can be configured with multiple PUCCH sequences. These multiple PUCCH sequences can be repeatedly mapped and / or transmitted on multiple PRBs included in one interlace. For example, when there are multiple PRBs included in one interlace, a separate / independent PUCCH sequence can be mapped to each PRB and / or transmitted in each PRB. The CS value applied to each sequence can be configured to have different values ​​for each PRB. In addition, the PS value applied to each sequence can be configured to have different values ​​for each PRB.

[0266] As an example, considering 2-bit UCI on PF0, as described in Embodiment 1, the two bits can be represented by four CS values: CS_start, CS_start+3, CS_start+6, and CS_start+9. In this case, different CS_start values ​​can be applied to each PRB (or sequence), and different PS values ​​(e.g., 1, 1i, -1, or -1i) can be multiplied with each PRB (or sequence) to map and / or transmit the PUCCH.

[0267] As another example, considering 2-bit UCI on PF1, the CS value corresponding to CS_start may be a sequence mapped to both UCI symbols and DMRS symbols, as described in Embodiment 1. In this case, a different CS_start value may be applied to each PRB (or sequence), and a different PS value (e.g., 1, 1i, -1, or -1i) may be multiplied by each PRB (or sequence) to map and / or transmit the PUCCH.

[0268] Compared to the method of embodiment 1 or embodiment 2 using only the CS value or the PS value, the method of applying a combination of different CS values ​​and different PS values ​​to multiple PRBs (or sequences) has advantages in terms of PAPR and / or CM performance. Figure 14 This is a diagram showing embodiment 4 when there are 10 PRBs and the length of each sequence is 12.

[0269] Hereinafter, Embodiment 4 will be described in more detail.

[0270] Implementation Method 4-1

[0271] The (starting) CS value applied to the PUCCH sequence to be repeatedly transmitted in each of the multiple PRBs included in one interlace can be configured to have different values ​​for each PRB group. In addition, the PS value to be multiplied by the PUCCH sequence to be mapped to each PRB and / or transmitted in each PRB can be configured to have a specific pattern so that the PS value varies for each PRB. In other words, embodiment 1-1 and embodiment 2-1 can be combined. Each PRB can be identified by the above-mentioned logical PRB index.

[0272] According to embodiment 4-1, PRBs included in one interlace may be divided into two or more groups.

[0273] The starting CS value may be indicated by the BS to the UE via higher layer signaling. Alternatively, the starting CS value may be pre-configured between the UE and the BS.

[0274] A specific PS pattern may be set to values ​​obtained from experiments using four PS values ​​of 1, 1i, -1, and -1i.

[0275] [Experiment 1] In an interleaved structure consisting of 10 PRBs, the starting CS value of each PRB is configured according to the previously proposed pattern (e.g., [0, 1, 0, 1, 0, 1, 0, 1]). Thereafter, the PAPR and CM performance are tested by fixing the phase of the first PRB to 1 (i.e., 0°) and applying all four PS values ​​[1, 1i, -1, -1i] (i.e., 0°, 90°, 180°, 270°) to the remaining 9 PRBs. The first PRB is the PRB with the lowest logical PRB index, i.e., the PRB at the lowest position in the band. Figure 15 Combinations of the top 20 PS values ​​with respect to CM performance based on the test results of Experiment 1 are shown.

[0276] Reference Figure 15 As a result, it can be seen that PAPR and CM performance are improved compared to when only the CS value is set to 0, 1, 0, 1, 0, 1, 0, 1, 0, and 1 and no PS value is applied. In addition, it can be seen that PAPR and CM performance are improved compared to when only the PS value is applied (in embodiment 1, PAPR is about 7.60001 dB and CM is about 8.218 dB, and in embodiment 2-1, PAPR is about 3.567 dB and CM is about 1.663 dB).

[0277] [Experiment 2] In an interleaved structure consisting of 11 PRBs, the starting CS value of each PRB is configured according to the previously proposed pattern (e.g., [0, 1, 0, 1, 0, 1, 0, 1]). Thereafter, the PAPR and CM performance are tested by fixing the phase of the first PRB to 1 (i.e., 0°) and applying all four PS values ​​[1, 1i, -1, -1i] (i.e., 0°, 90°, 180°, 270°) to the remaining 9 PRBs. The first PRB is the PRB with the lowest logical PRB index, i.e., the PRB at the lowest position in the band. Figure 16 Combinations of the top 20 PS values ​​with respect to CM performance based on the test results of Experiment 2 are shown.

[0278] According to Embodiment 4, 40 PS combinations obtained from the results of Experiments 1 and 2 may be considered when mapping and / or transmitting a single PUCCH signal in an interlace consisting of 10 or 11 PRBs.

[0279] Implementation 4-2

[0280] The (starting) CS value applied to the PUCCH sequence to be repeatedly transmitted in each of the multiple PRBs included in one interlace can be configured to increase or decrease sequentially by the value of X according to the PRB index. In addition, the PS value to be multiplied by the PUCCH sequence to be mapped to each PRB and / or transmitted in each PRB can be configured to have a specific pattern so that the PS value varies for each PRB. In other words, Embodiment 1-2 and Embodiment 2-1 can be combined.

[0281] The value of X can be set to be less than or equal to the sequence length.

[0282] Each PRB may be identified by the above-mentioned logical PRB index.

[0283] The CS value calculated based on the X value and the PRB index may be greater than the sequence length L. The actual CS value may be configured by wrapping the calculated CS value with respect to the sequence length so that the CS value is less than the sequence length L.

[0284] The starting CS value may be indicated by the BS to the UE via higher layer signaling. Alternatively, the starting CS value may be pre-configured between the UE and the BS.

[0285] A specific PS pattern may be set to values ​​obtained from experiments using four PS values ​​of 1, 1i, -1, and -1i.

[0286] [Experiment 1] In an interleaved structure consisting of 10 PRBs, the starting CS value of each PRB is configured according to the previously proposed pattern (e.g., [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]). Thereafter, the PAPR and CM performance are tested by fixing the phase of the first PRB to 1 (i.e., 0°) and applying all four PS values ​​[1, 1i, -1, -1i] (i.e., 0°, 90°, 180°, 270°) to the remaining 9 PRBs. The first PRB is the PRB with the lowest logical PRB index, i.e., the PRB at the lowest position in the band. Figure 17 Combinations of the top 20 PS values ​​with respect to CM performance based on the test results of Experiment 1 are shown.

[0287] Reference Figure 17 The results show that the first four results have excellent performance compared with the rest in terms of PAPR / CM.

[0288] [Experiment 2] In an interleaved structure consisting of 11 PRBs, the starting CS value of each PRB is configured according to the previously proposed pattern (e.g., [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]). Thereafter, the PAPR and CM performance are tested by fixing the phase of the first PRB to 1 (i.e., 0°) and applying all four PS values ​​[1, 1i, -1, -1i] (i.e., 0°, 90°, 180°, 270°) to the remaining 9 PRBs. The first PRB is the PRB with the lowest logical PRB index, i.e., the PRB at the lowest position in the band. Figure 16 Combinations of the top 20 PS values ​​with respect to CM performance based on the test results of Experiment 2 are shown.

[0289] According to Embodiment 4, 40 PS combinations obtained from the results of Experiments 1 and 2 may be considered when mapping and / or transmitting a single PUCCH signal in an interlace consisting of 10 or 11 PRBs.

[0290] Specifically, the first four combinations (ie, indexes 1, 111026, 139811, and 234388 in Experiment 1 and indexes 1, 444103, 559241, and 937551 in Experiment 2) have the following characteristics: The first four combinations can be considered as representative combinations of CS values ​​and PS values ​​in Embodiment 4-2.

[0291] - Index 1 in Experiment 1 (Index 1 in Experiment 2): This is a pattern to which PS is not applied.

[0292] - Index 111026 in Experiment 1 (index 444103 in Experiment 2): the phase is shifted 90° clockwise in the PRB order.

[0293] - Index 139811 in Experiment 1 (index 559241 in Experiment 2): the phase is shifted 180° clockwise (counterclockwise) in the PRB order.

[0294] - Index 234388 in Experiment 1 (index 937551 in Experiment 2): the phase is shifted 90° counterclockwise in the PRB order.

[0295] Therefore, when the CS is configured to increase the value of X according to the PRB index (e.g., [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, (10)]), the PS pattern can be configured to have a PS value such that the phase increases by the value of Y according to the PRB index.

[0296] For example, if Y is Pi / 2 (=90°), index 111026 in Experiment 1 (index 444103 in Experiment 2) may be configured and / or applied. If Y is Pi (=180°), index 139811 in Experiment 1 (index 559241 in Experiment 2) may be configured and / or applied. If Y is -Pi / 2 (=-90°), index 234388 in Experiment 1 (index 937551 in Experiment 2) may be configured and / or applied.

[0297] 3.5 Implementation Method 5

[0298] Embodiment 1 and Embodiment 3 can be combined. According to Embodiment 1, different CS values ​​can be applied to each PRB, and according to Embodiment 3, different UCI bit-to-constellation mappings can be applied to each PRB. Similar to what is described in Section 3.4, the number of different sequences generated by combining Embodiment 1 and Embodiment 3 is much greater than the number of different sequences generated by only Embodiment 1 or Embodiment 3 (mapped to PRBs, respectively). Therefore, lower PAPR / CM values ​​(better performance) can be achieved by combining Embodiment 1 and Embodiment 3.

[0299] That is, in addition to applying different starting CS values ​​to PUCCH sequences repeatedly transmitted on multiple PRBs, different UCI bit-to-constellation mapping may also be applied to each PRB. The multiple PRBs may be spaced apart by a specific frequency interval.

[0300] For example, for 2-bit UCI on PF0, a combination of CS_start value and constellation can be applied to each PUCCH sequence repeatedly transmitted in each PRB while maintaining Gray coding for the bit set {00, 01, 11, 10}: CS = {CS_start + a, CS_start + 3 + a, CS_start + 6 + a, CS_start + 9 + a} or {CS_start + 9 + a, CS_start + 6 + a, CS_start + 3 + a, CS_start + a}, where a can be one of 0, 3, 6, and 9.

[0301] 3.6. Implementation Method 6

[0302] Embodiment 2 and Embodiment 3 can be combined. According to Embodiment 2, different PS values ​​can be applied to each PRB, and according to Embodiment 3, different UCI bit-to-constellation mapping can be applied to each PRB. Similar to Embodiment 4 and Embodiment 5, the number of different sequences generated by combining Embodiment 2 and Embodiment 3 is much greater than the number of different sequences (mapped to PRBs) generated by only Embodiment 2 or Embodiment 3. Therefore, lower PAPR / CM values ​​(better performance) can be achieved by combining Embodiment 2 and Embodiment 3.

[0303] That is, in addition to multiplying different PS values ​​by a PUCCH sequence repeatedly transmitted on multiple PRBs, different UCI bit-to-constellation mapping may be applied to each PRB. The multiple PRBs may be spaced apart by a specific frequency interval.

[0304] For example, for 2-bit UCI on PF0, different constellation mappings can be applied to each PUCCH sequence repeatedly transmitted in each PRB while maintaining Gray coding for the bit set {00, 01, 11, 10}: {0+a, 3+a, 6+a, 9+a} or {9+a, 6+a, 3+a, 0+a}. In addition, different PS values ​​can be multiplied by each PRB (or sequence). For the PS value, the pattern proposed in Embodiment 2 or Embodiment 3 can be applied. Here, a can be one of 0, 3, 6, and 9.

[0305] Additional embodiments based on Embodiments 1 to 6

[0306] In a specific system, a combination of CS values ​​and / or PS values ​​may be selected and / or applied based on the results of the proposed embodiments (Embodiments 1 to 6). For example, when using PUCCH format 0 of NR-U, each interlace (or interlace index) included in the PUCCH may consist of 10 or 11 RBs. A short sequence may be repeatedly transmitted in each of the multiple RBs included in one interlace. The short sequence may be a computer-generated sequence (CGS) of length 12.

[0307] When a short sequence is repeatedly transmitted in an interlace consisting of 10 RBs, embodiments 1-2 may be applied. For example, in embodiments 1-2, if X has a value of 1, the starting CS value applied to each RB / sequence may be set to 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 in the order of RBs (in the PUCCH resource).

[0308] When short sequences are repeatedly transmitted in an interlace consisting of 11 RBs, embodiment 2-1 can be applied. For example, based on the test results of Experiment 2 of embodiment 2-1, the first four PS patterns can be applied sequentially according to the order of RBs (in the PUCCH resources). For example, assuming the application index 421477, the PS values ​​applied to each RB / sequence can be set to 1, 1i, -1, 1i, -1, -1, -1, 1i, -1, 1i, and 1, respectively, according to the order of RBs (in the PUCCH resources).

[0309] The method in Embodiment 6 is applicable not only to the PUCCH but also to UL, DL and / or sidelink channels and / or signals configured in an interleaved form consisting of 10 or 11 RBs and / or sequences.

[0310] In addition, the experiments of each embodiment were performed based on a 30kHz SCS, but similar results can be obtained for other SCSs. Therefore, each embodiment can be considered / applied regardless of the SCS. In addition, the experiments of each embodiment were mainly performed based on PUCCH format 0, but similar results can be obtained for other PUCCH formats. Therefore, each embodiment can be applied to other PUCCH formats (e.g., PUCCH format 1, PUCCH format 4, etc.).

[0311] For example, when using a 15kHz SCS, the total number of PRBs can be increased. However, when actually transmitting the PUCCH, one interlace can consist of 10 or 11 PRBs. In other words, one interlace can be configured identically for both the case of using a 15kHz SCS and the case of using a 30kHz SCS. The spacing between PRBs in one interlace can be increased. Therefore, the proposed embodiment is applicable to other SCSs.

[0312] It is also possible to consider loading additional information on the PS pattern proposed in embodiment 2. Since additional information is loaded on the PS pattern, this method can be used in embodiments 4 and 6 using PS patterns. Specifically, when N specific PS patterns are preconfigured and / or predefined, one of the N PS patterns can be selected and applied to the UL channel and / or signal. The UL channel and / or signal may be, for example, a PUCCH. The UL channel and / or signal may (additionally) include a specific UCI having log2(N) bits. In addition, the UL channel and / or signal may (additionally) include a specific UCI having ceil(log2(N)) or floor(log2(N)) bits. For example, based on the above experimental results, the specific N PS patterns may be PS patterns selected due to excellent PAPR / CM performance. As an example, HARQ-ACK information / bits may be transmitted based on the CS (or CS pattern) of the QPSK / BPSK (binary phase shift keying) modulation symbols applied to the multiple sequences constituting the PUCCH or mapped to the sequence, and at the same time, SR information and / or bits may be transmitted based on the PS (or PS pattern) of the multiple sequences constituting the corresponding PUCCH. The SR information and / or bits may be, for example, whether the transmitted SR is positive or negative. As another example, in the experiment of the present disclosure, the first four PS patterns (see Figure 13 、 Figure 17 and Figure 18 ) transmits 2 bits of information. For example, according to Experiment 2 of Implementation 2, the first four PS value patterns (i.e., indexes 43171, 532523, 421477, and 976621 in Experiment 2) show excellent PAPR / CM compared to other PS value patterns. Therefore, 2 bits of information can be transmitted based on one or more of the four indexes (indexes 43171, 532523, 421477, and 976621). In addition, in a specific cell, 1 bit of information can be transmitted based on two of the first four indexes, and in a cell adjacent to the specific cell, 1 bit of information can be transmitted based on the remaining two indexes. In this case, the additional information can be, for example, positive / negative SR and / or ACK / NACK feedback.

[0313] In addition, PS and / or CS patterns with good PAPR / CM performance can be mapped to information with a high expected transmission / reception frequency between the UE and the BS. For example, since the transmission / reception frequency of ACK is expected to be high in the case of HARQ A / N, and the transmission / reception frequency of negative SR is expected to be high in the case of SR, the PS patterns with indices 43171 and / or 532523, which showed the best performance in the results of Experiment 2 in Embodiment 2, can be used to transmit ACK or negative SR.

[0314] As a specific example, the UE may be configured to send positive / negative SR information based on the PS pattern as shown in Table 12.

[0315] [Table 12]

[0316] index PS pattern information 43171 [1,1,1,-1,-1,-1,1,-1,-1,1,-1] Positive SR 532523 [1,-1,1,1,-1,1,1,1,-1,-1,-1] Negative SR

[0317] Hereinafter, how two different UEs transmit PUCCH by applying the pattern shown in Table 12 will be described. It is assumed that the PUCCH transmissions of two UEs (e.g., UE1 and UE2) are multiplexed on the same PUCCH resource. In addition, according to the configuration of the BS, UE1 indicates ACK / NACK with (starting) CS values ​​of 0 and 6, and UE2 indicates ACK / NACK with (starting) CS values ​​of 3 and 9. If, according to the example in Table 12, UE1 transmits a positive SR and UE2 transmits a negative SR, the two UEs can be configured Figure 19 The PUCCH interleaving structure is shown.

[0318] If UE1 and UE2 are Figure 19 If the BS sends PUCCH as shown, the BS can know which (starting) CS values ​​UE1 and UE2 use to send PUCCH. The BS can perform detection based on the sequence of the PUCCH sent from UE1 and UE2. Thereafter, the BS can obtain the PS pattern values ​​used by UE1 and UE2, thereby receiving additional information (e.g., positive SR, negative SR, etc.).

[0319] When this method is applied, additional information can be exchanged in a new domain (ie, PUCCH PS pattern), and thus reliability can be improved compared to when only the constellation is used as in the prior art.

[0320] Hereinafter, a power offset configuration method based on Embodiments 1 to 6 will be described.

[0321] Even when different information is transmitted according to the proposed method of transmitting additional information (e.g., SR information, A / N information, etc.) with a plurality of different CS patterns, the same CS value may be used in a specific PRB included in the corresponding interlace. For example, the method of transmitting additional information with a plurality of different CS patterns means transmitting the additional information by selecting and / or applying one of a plurality of CS patterns according to whether the information is a negative SR or a positive SR or whether the information is an ACK or a NACK. For example, considering that SR information is transmitted with different CS patterns, when a 2-bit A / N+SR is transmitted on a PUCCH format 0 (which may be referred to as an enhanced PUCCH format 0) proposed in this document, the CS value for each PRB included in the interlace may be as follows: Figure 20 OK as shown.

[0322] exist Figure 20In the embodiment 1-2, the initial CS value of the 2-bit A / N (e.g., M0+Mcs) is set to {0, 3, 6, 9}={NN, NA, AA, AN}. Embodiment 1-2 is used for negative SR, and X is set to 1 (where X is the CS interval between adjacent PRBs). Embodiment 1-2 is used for positive SR, and X is set to 7 (=1+6). In this case, 5 and 11 (=5+6) may be set instead of 1 and 7 (=1+6), and their order may be changed. It can be seen that when NN+negative SR is sent ( Figure 20 ) and when sending AA+positive SR ( Figure 20 (The seventh column of FIG. 1 shows a time slot in which 2-bit A / N and SR are transmitted (2-bit A / N+SR time slot)). The same CS value is always used in odd-numbered PRB indices (i.e., PRB #1, #3, #5, ..., #9). Therefore, compared with a time slot in which only 2-bit A / N is transmitted (2-bit A / N-only time slot), a time slot in which 2-bit A / N and SR are transmitted (2-bit A / N+SR time slot) may have poorer A / N performance.

[0323] When a method of transmitting additional information (e.g., SR information, A / N information, etc.) using multiple different CS patterns is used, if the same CS value is applied to PRBs included in an interlace to transmit different information, a transmission power offset may be used for corresponding PUCCH transmission. Figure 20 As shown, when the same CS value is applied to half of the PRBs included in the interlace, the UE can be configured to use N dB higher power (e.g., N=3) in the time slot where the 2-bit A / N and SR are transmitted together, compared to the time slot where only the 2-bit A / N is transmitted. As another example, when a second A / N is transmitted based on another CS pattern, the power for the 2-bit A / N-only time slot can be N dB higher (e.g., N=3) than the power for the 1-bit A / N-only time slot.

[0324] This can be summarized as follows. When transmitting UCI on the PUCCH, the PUCCH transmission power offset when applying a fixed CS pattern can be set to be different from the PUCCH transmission power offset when applying multiple different CS patterns (one of which is selected and applied). For example, the offset when transmitting UCI on the PUCCH by applying multiple different CS patterns can be N dB (N>0) higher (e.g., N=3) than the offset when transmitting UCI on the PUCCH by applying a fixed CS pattern.

[0325] Hereinafter, a method of transmitting the second TB A / N information in different CS patterns is described.

[0326] It can be assumed that SR information is transmitted in multiple different CS patterns and the BS transmits two DCIs that schedule two TBs. In this case, the UE may miss the DCI that schedules the second TB. The UE may have an initial CS mapping value as shown in Table 13. In Table 13, the two letters before the "+" indicate whether the first TB and the second TB are A / N, respectively, and the Pos / Neg after the "+" indicates the type of SR. For example, "NA+Neg" in Table 13 means that the first TB is NACK, the second TB is ACK, and the SR is negative. Similarly, "AN+Pos" means that the first TB is ACK, the second TB is NACK, and the SR is positive.

[0327] [Table 13]

[0328]

[0329] If the UE fails to receive the DCI scheduling the second TB, and if it knows that the reception result of the first TB is an ACK and intends to send a negative SR, the UE selects CS pattern 1 and an initial CS value of 6. In this case, since the BS assumes that the corresponding UE has received both TBs, it can determine that the second TB is an ACK (the UE has received the second TB normally). Ultimately, an N-to-A error (strictly speaking, a DTX-to-A error) occurs.

[0330] To solve this problem, the following two methods are proposed.

[0331] Proposed method 1: Mapping based on Table 14 under the assumption of 2-bit A / N (in the case of 1-bit A / N, the second bit is regarded as NACK from the UE's perspective)

[0332] [Table 14]

[0333]

[0334] When the UE transmits a 1-bit A / N, as shown in Table 14, the second bit can always be considered a NACK. Based on this mapping, when the UE transmits only the result of the first TB, the BS can always identify the second TB as a NACK. This eliminates the risk of N-to-A errors (or DTX-to-A errors).

[0335] As another method, N to A errors (or DTX to ACK errors) can be handled by modifying the 2-bit A / N mapping as shown in Table 15.

[0336] [Table 15]

[0337]

[0338] Proposed method 2: Map and transmit the A / N of the second TB with different CS patterns as shown in Table 16

[0339] [Table 16]

[0340]

[0341] As shown in Table 16, the UE can use the same CS pattern and different initial CS values ​​when transmitting a 1-bit A / N+SR. Furthermore, the UE can use a different CS pattern when transmitting the A / N of the second TB. Based on this mapping, when the UE transmits only the result of the first TB, the BS can always identify the second TB as a NACK. This reduces the risk of N-to-A errors (or DTX-to-A errors).

[0342] In addition, the method of configuring 1-bit A / N+SR as shown in Table 15 has the advantage of maintaining compatibility with the method used in the conventional system. Proposed method 2 can also be expressed as shown in Table 17.

[0343] [Table 17]

[0344]

[0345] Hereinafter, a method of using different CS patterns in a slot where only SR is transmitted (SR-only slot) will be described.

[0346] Different CS patterns (or different PS patterns) can be used for PUCCH transmission that only sends SR information. As an example, the BS may assign the same initial CS value to one UE for SR information transmission. The BS may instruct the UE to send a specific SR (process or index) based on X=1 (configured separately by the higher layer) and to send another SR (process or index) based on X=7 (=1+6). As another example, the BS may assign the same initial CS value to multiple UEs (e.g., two UEs: UE1 and UE2) for SR information transmission. The BS may instruct UE1 to send SR based on X=1 and to send SR based on X=7 (=1+6).

[0347] According to the above method, an advantage is that the PUCCH resource capacity or UE multiplexing capacity used for SR transmission is increased compared to when SR information is transmitted based only on the initial CS value. For example, if the number of different CSs that can be used for the same initial CS value is N, the PUCCH resource capacity or UE multiplexing capacity can be doubled, thereby supporting 2N PUCCH resources and UEs.

[0348] In the above-mentioned method, transmitting different information with different CS patterns can be modified to transmitting different information with different PS patterns. In addition, although the value of X is assumed to be 1 for convenience of description, X can be one of the coprime numbers of 12 (e.g., 1, 5, 7, 11).

[0349] 3.7. Implementation Method 7

[0350] In Embodiments 1 to 6, a method of repeatedly transmitting multiple short sequences each having a length of one RB based on the interleaving structure of a single PUCCH has been described. In Embodiment 7, a method of dividing a single long sequence having a length equivalent to the total number of REs corresponding to (or included in) multiple PRBs (e.g., N PRBs) constituting an interleaving of a single PUCCH into N parts (per 12 REs), mapping the PUCCH to each of the N PRBs, and transmitting the sequence will be described.

[0351] As an example, if the total number of PRBs included in a particular interlace is 10, the total number of REs included in the particular interlace is 10 (PRB) * 12 (per PRB subcarrier) = 120. In this case, the length of the Zadoff-Chu (ZC) sequence is determined to be the maximum prime number less than or equal to 120. Since the maximum prime number less than or equal to 120 is 113, the length of the ZC sequence can be 113. The remaining 7 REs can be configured to have the same value as the first part of the length 113 sequence. In other words, CS can be applied. For example, when the set of 113 elements constituting the length 113 sequence is defined as follows: {e1, e2, ..., e113}, by copying and concatenating the first 7 elements to the end of the length 113 sequence, the length 120 sequence can be defined as follows: {e1, e2, ..., e113, e1, e2, ..., e7}. The length 120 sequence is divided into 10 parts, and each part is mapped to each PRB by 12 REs to perform PUCCH transmission.

[0352] As another example, if the total number of PRBs is 11, the total number of REs included in a particular interlace is 11 (PRBs) * 12 (per PRB subcarrier) = 132. In this case, the length of the ZC sequence is determined to be the maximum prime number less than or equal to 132. Since the maximum prime number less than or equal to 132 is 131, the length of the ZC sequence can be 131. The remaining one RE can be configured to have the same value as the first part of the length 131 sequence. In other words, CS can be applied. For example, when the set of 131 elements constituting the length 131 sequence is defined as follows: {e1, e2, ..., e131}, by copying and concatenating the first element to the end of the length 131 sequence, the length 132 sequence can be defined as follows: {e1, e2, ..., e131, e1}. The length 132 sequence is divided into 11 parts, and each part is mapped to each PRB according to 12 REs to perform PUCCH transmission.

[0353] When generating a PUCCH sequence for U-band operation according to Embodiment 7, the PUCCH needs to be designed to have good PAPR / CM performance because the PUCCH is a UL channel transmitted by the UE. Therefore, the following method can be applied to improve the PAPR / CM performance.

[0354] Embodiment 7-1: Instead of using the maximum prime number less than or equal to the total number of REs mapped with PUCCH as the sequence length, a prime number with good PAPR / CM performance among prime numbers less than or equal to the total number of REs mapped with PUCCH is used as the sequence length.

[0355] As an example, when the total number of PRBs included in a specific interlace is 11 (ie, when the total number of REs is 132), it may be as follows Figure 21 The PAPR / CM performance is obtained as shown.

[0356] Reference Figure 21 , it can be seen that the prime number of 5 (and / or 7) whose result of the modulo 12 operation is a good PAPR / CM performance. Therefore, the prime number of 5 (and / or 7) whose result of the modulo 12 operation is a can be selected as the sequence length.

[0357] Specifically, when the total number of PRBs included in a specific interlace is 11, the sequence length may be set to 127, 113, 103, 101, 89, and the like.

[0358] As another example, when the total number of PRBs included in a specific interlace is 10 (ie, when the total number of REs is 120), it may be as follows Figure 22 The PAPR / CM performance is obtained as shown.

[0359] Reference Figure 22 , it can be seen that the prime number of 5 (and / or 7) whose result of the modulo 12 operation is a good PAPR / CM performance. Therefore, the prime number of 5 (and / or 7) whose result of the modulo 12 operation is a can be selected as the sequence length.

[0360] Specifically, when the total number of PRBs included in a specific interlace is 10, the sequence length may be set to 113, 103, 101, 89, 79, and the like.

[0361] Embodiment 7-1 can be summarized as follows. When a prime number is less than or equal to the total number of REs included in a particular interlace and the result of a modulo 12 operation is 5 (and / or 7), the prime number can be selected as the sequence length. A PUCCH sequence can be generated and / or transmitted based on the selected length.

[0362] Prime numbers greater than 30 and less than 132 and for which the result of a modulo 12 operation is equal to 5 or 7 are listed as follows: 127, 113, 103, 101, 89, 79, 67, 53, 43, 41, and 31. The listed values ​​can be used as the length of the PUCCH sequence.

[0363] Embodiment 7-2: The basic concept of Embodiment 7-2 follows Embodiment 7-1. However, to further reduce specification work, even when the total number of PRBs included in a specific interlace is different (eg, 11 RBs and 10 RBs), the same PUCCH sequence length may be configured.

[0364] As an example, the sequence length can be set to 113 (or 103) for two cases: when the total number of PRBs included in a particular interlace is 11 (i.e., when the total number of REs is 132) and when the total number of PRBs included in a particular interlace is 10 (i.e., when the total number of REs is 120).

[0365] As another example, the sequence length may be set to 103 (or 101) for two cases: when the total number of PRBs included in a particular interlace is 10 (i.e., when the total number of REs is 120) and when the total number of PRBs included in a particular interlace is 9 (i.e., when the total number of REs is 108).

[0366] Since one sequence length is used, the specification work can be simplified and the PAPR / CM performance can be guaranteed.

[0367] Embodiment 7-2 may be modified as follows: For interlaces with a larger total number of PRBs, a PUCCH sequence of length a may be generated first. Then, for interlaces with a total number of PRBs less than n, n RBs may be punctured from the length a sequence (as many as the difference in the total number of PRBs included in each interlace), and the remainder of the sequence may be used.

[0368] As an example, for an interlace including a total of 11 RBs, a PUCCH sequence may be generated (through cyclic shift) to have a sequence length of 113 (or 103). Then, for an interlace including 10 RBs, the last RB may be punctured from the length 113 PUCCH sequence, and the remaining sequence may be used.

[0369] As another example, for an interlace including a total of 10 RBs, a PUCCH sequence may be generated (through cyclic shift) to have a sequence length of 103 (or 101). Then, for an interlace including 9 RBs, the last RB may be punctured from the length 103 PUCCH sequence, and the remaining sequence may be used.

[0370] As another example, for an interlace including a total of 11 RBs, a PUCCH sequence may be generated to have a sequence length of 103 (or 101) (through cyclic shifting). Then, for an interlace including 10 RBs, the last RB may be punctured from a length-103 PUCCH sequence, and the remaining sequence may be used. For an interlace including 9 RBs, the last two RBs may be punctured from a length-103 PUCCH sequence, and the remaining sequence may be used.

[0371] When the total number of PRBs included in a specific interlace is 9 (ie, when the total number of REs is 108), it can be as follows Figure 23 The PAPR / CM performance is obtained as shown.

[0372] In addition, the method of configuring multiple sequences proposed above is not limited when configuring a PUCCH signal. That is, when a UL channel / signal (e.g., a DMRS signal for PUSCH demodulation, a DMRS for PUCCH demodulation, a PRACH preamble, and an SRS sequence) is configured with multiple sequences, the principles / methods proposed in this disclosure can be applied equally / similarly.

[0373] In addition, when a single channel (e.g., PUCCH) and / or a single signal (e.g., DMRS) is configured with a single sequence, different CSs and / or PSs (or combinations thereof) may be applied to multiple channels / signals (or sequences configured therefor). That is, a UE may be configured to simultaneously transmit multiple channels / signals (or sequences configured therefor) to which different CSs and / or PSs (or combinations thereof) are applied.

[0374] In addition, although the embodiments of the present disclosure are described based on the UL, these embodiments can be applied even in the DL case when any channel / signal is repeatedly transmitted in the frequency domain. For example, when frequency division multiplexing (FDM) is applied to the wake-up signal (WUS) sequence (for a specific purpose such as UE grouping) in eMTC / NB-IoT, the embodiments of the present disclosure can be applied. Since the WUS is transmitted in the DL (BS->UE), the transmitter and receiver are reversed compared to the above-mentioned PUCCH transmission. Therefore, the BS can perform the operations described as being performed by the UE in the embodiments of the present disclosure, and the UE can perform the operations described as being performed by the BS.

[0375] In addition, when configuring / mapping / sending a sequence based on a side link (SL) or channel (e.g., a feedback channel) for UE-to-UE communication (e.g., D2D communication) and / or vehicle-to-vehicle communication (e.g., V2X communication) and / or a signal (e.g., DMRS) configured with such a sequence, the principles / operations / methods in the embodiments of the present disclosure may be applied equally / similarly.

[0376] Although the embodiments of the present disclosure are described based on CGS, these embodiments can be applied when using general sequences. For example, when the base sequence is an M sequence, the embodiments of the present disclosure can be applied by changing the initial value of the linear feedback shift register (LFSR) rather than changing the root index of the ZC sequence. The methods proposed in the embodiments are applicable when the M sequence is cyclically shifted.

[0377] It is obvious that each example of the proposed method can also be included as an implementation method, and therefore each example can be regarded as a proposed method. Although the proposed methods can be implemented independently, some of the proposed methods can be combined (or merged) to facilitate implementation. In addition, it can be stipulated that information on whether to apply the proposed method (or information on rules related to the proposed method) should be sent from the BS to the UE via a predefined signal (e.g., a physical layer signal, a higher layer signal, etc.).

[0378] The generation of the pseudo-random sequence and the low PAPR sequence based on the M sequence may be performed with reference to Table 18, Table 19 and the operations defined in 3GPP TS38.211.

[0379] [Table 18]

[0380]

[0381] [Table 19]

[0382]

[0383]

[0384] Network access and communication processing

[0385] The UE may perform network access processing to execute the procedures and / or methods described / proposed above. For example, the UE may receive and store system information and configuration information required to execute the procedures and / or methods described / proposed above during network access (e.g., BS access). The configuration information required for the present disclosure may be received via higher-layer signaling (e.g., RRC signaling or MAC layer signaling).

[0386] Figure 24is a diagram showing initial network access and subsequent communication processing. In NR, physical channels and RSs can be transmitted through beamforming. When beamforming-based signal transmission is supported, beam management can be followed for beam alignment between the BS and the UE. In addition, the signals proposed in the present disclosure can be sent / received through beamforming. In RRC_IDLE mode, beam alignment can be performed based on SSB, and in RRC_CONNECTED mode, beam alignment can be performed based on CSI-RS (in DL) and SRS (in UL). On the contrary, when beamforming-based signal transmission is not supported, the beam-related operations described below can be skipped.

[0387] Reference Figure 24 , the BS (e.g., eNB) may periodically send SSBs (S702). The SSBs include PSS / SSS / PBCH. The SSBs may be sent through beam scanning. The PBCH may include a master information block (MSB), and the MIB may include scheduling information of the remaining minimum system information (RMSI). The BS may then send the RMSI and other system information (OSI) (S704). The RMSI may include information required for initial access to the BS (e.g., PRACH configuration information). After detecting the SSBs, the UE identifies the best SSB. The UE may then send a RACH preamble (message 1; Msg1) in a PRACH resource linked / corresponding to the index (i.e., beam) of the best SSB (S706). The beam direction of the RACH preamble is associated with the PRACH resource. The association between the PRACH resource (and / or the RACH preamble) and the SSB (SSB index) may be configured by system information (e.g., RMSI). Subsequently, in the RACH process, the BS may transmit a random access response (RAR) (Msg2) in response to the RACH preamble (S708), the UE may transmit Msg3 (e.g., RRC connection request) based on the UL grant included in the RAR (S710), and the BS may transmit a contention resolution message (Msg4) (S720). Msg4 may include RRC connection establishment.

[0388] When an RRC connection is established between the BS and the UE in the RACH process, beam alignment may then be performed based on the SSB / CSI-RS (in DL) and the SRS (in UL). For example, the UE may receive the SSB / CSI-RS (S714). The UE may use the SSB / CSI-RS to generate a beam / CSI report. The BS may request the UE to send a beam / CSI report through the DCI (S716). In this case, the UE may generate a beam / CSI report based on the SSB / CSI-RS and send the generated beam / CSI report to the BS on the PUSCH / PUCCH (S718). The beam / CSI report may include beam measurement results, information about the preferred beam, etc. The BS and the UE may switch beams based on the beam / CSI report (S720a and S720b).

[0389] Subsequently, the UE and the BS may perform the procedures and / or methods described / proposed above. For example, based on the configuration information obtained in the network access process (e.g., the system information acquisition process, the RRC connection process on the RACH, etc.), the UE and the BS may transmit wireless signals by processing the information stored in the memory, or may process the received wireless signals according to the proposals of the present disclosure and store the processed signals in the memory. The wireless signals may include at least one of the PDCCH, PDSCH, or RS on the DL and at least one of the PUCCH, PUSCH, or SRS on the UL.

[0390] Implementation Example

[0391] Figure 25 is a flowchart illustrating a signal transmission / reception method according to an embodiment of the present disclosure.

[0392] Reference Figure 25 , the embodiments of the present disclosure may be performed by a UE. The embodiments of the present disclosure may include: repeatedly mapping a PUCCH sequence to each RB in an interlace (S2501); and transmitting a PUCCH including the PUCCH sequence in the interlace (S2503).

[0393] Specifically, in order to send the PUCCH sequence in interleaving, as described above in embodiments 1 to 6, the CS value may be changed for each RB, the PS value may be changed for each RB, and / or UCI bit to constellation mapping may be applied to each RB.

[0394] For example, as described above in Embodiment 2 of the present disclosure, the PS value of the PUCCH sequence of each RB may vary according to the RB index of each RB. Specifically, the PS value may be determined by a specific pattern to have a value for each RB. The specific pattern may be determined so that the PS value of the RB with the lowest index in the interlace is fixed to 1 and the PS values ​​to be applied to the remaining RBs in the interlace are selected based on PAPR and CM. When the number of PRBs included in the interlace is 10, the PS value may be used. Figure 12 、 Figure 15 and Figure 17 When the number of PRBs included in the interleaving is 11, the Figure 13 、 Figure 16 and Figure 18 At least one of the patterns shown.

[0395] As described above, the RB index of each RB can be a logical RB index within the interlace in which the PUCCH is transmitted, rather than an index assigned based on the active BWP or the entire bandwidth. The RB index is assigned to each RB sequentially based on the frequency position of the RB within the interlace. For example, when the number of RBs included in an interlace is 11, the 11 RBs can be assigned RB indices from 0 to 10 based on frequency position. When the number of RBs included in an interlace is 10, the 10 RBs can be assigned RB indices from 0 to 9 based on frequency position.

[0396] Although only the PS value of the PUCCH sequence may vary for each RB, the CS value may also vary together with the PS value. The CS value may be changed according to Embodiment 1 and / or Embodiment 4. For example, different CS values ​​may be applied to each RB, and each CS value may vary according to the RB index of each RB.

[0397] For example, as described in Embodiments 1-2 of the present disclosure, for each RB, the CS value of the PUCCH sequence may be based on m determined by multiplying the RB index of each RB by the value of X (or the value of X). int value changes.

[0398] Referring to Table 11, when the value of Δ is 1, 2, or 5, the PUCCH transmission performance increases. Specifically, when the value of Δ is 5, the best PUCCH transmission performance is obtained, so the value of Δ may be 5.

[0399] m determined by multiplying the RB index of each RB by the value of Δ (or the value of X) may be int A modulo operation is performed on the value of and the sequence length L (or the number of subcarriers of each RB, which is the same as the sequence length L). Alternatively, the factor used for conventional CS derivation and m can be combined. int A modulo operation is performed on the value obtained by adding the value of and the sequence length L.

[0400] In addition to reference Figure 25 In addition to the operations described, refer to Figures 1 to 24 One or more of the operations described in the embodiments 1 to 7 and / or the operations described in Embodiments 1 to 7 may be combined and performed separately. As an example, the UE may perform UL LBT before transmitting the PUCCH. As another example, when scheduling a single PUSCH and / or multiple PUSCHs, the UE may operate according to one or more methods described in Embodiments 1 to 5.

[0401] Examples of communication systems to which the present disclosure is applied

[0402] 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.

[0403] 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 identical or corresponding hardware blocks, software blocks, or functional blocks.

[0404] Figure 26 A communication system 1 applied to the present disclosure is shown.

[0405] Reference Figure 26The communication system 1 applied to the present disclosure includes a wireless device, a base station, and a network. A wireless device is a device that performs communication using a radio access technology (RAT) (e.g., 5G NR (or new RAT) or LTE), also known as a communication / radio / 5G device. The wireless device may include (but is not limited to) a robot 100a, vehicles 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 wireless communication capabilities, an autonomous vehicle, and a vehicle capable of vehicle-to-vehicle (V2V) communication. In this context, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). An 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 smartphone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, and the like. Handheld devices may include smartphones, smart tablets, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., laptops). Home appliances may include 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.

[0406] Wireless devices 100a to 100f may be connected to a network 300 via a BS 200. AI technology may be applied to wireless devices 100a to 100f, and wireless devices 100a to 100f may be connected to an 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 wireless devices 100a to 100f may communicate with each other via the BS 200 / network 300, wireless devices 100a to 100f may perform direct communication (e.g., sidelink communication) with each other without the intervention of the BS / network. For example, vehicles 100b-1 and 100b-2 may perform direct communication (e.g., V2V / Vehicle-to-Everything (V2X) communication). IoT devices (e.g., sensors) may perform direct communication with other IoT devices (e.g., sensors) or other wireless devices 100a to 100f.

[0407] Wireless communications / connections 150a, 150b, and 150c may be established between wireless devices 100a to 100f, BS 200, and between BSs 200. Here, wireless communications / connections may be established via 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 transmitted and received between wireless devices, between wireless devices and BSs, and between BSs via wireless communications / connections 150a, 150b, and 150c. For example, signals may be transmitted and received via various physical channels via wireless communications / connections 150a, 150b, and 150c. To this end, at least a portion of various configuration information for configuring processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation processes may be performed based on various proposals of the present disclosure.

[0408] Examples of wireless devices to which the present disclosure is applied

[0409] Figure 27 A wireless device suitable for use with the present disclosure is shown.

[0410] Reference Figure 27 , the first wireless device 100 and the second wireless device 200 can 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 Figure 26 {wireless device 100x and BS 200} and / or {wireless device 100x and wireless device 100x}.

[0411] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and may also include one or more transceivers 106 and / or one or more antennas 108. The processor 102 may control the memory 104 and / or the transceiver 106 and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed herein. For example, the processor 102 may process 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 code including instructions for executing all or part of the processing controlled by the processor 102 or for executing the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed herein. 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 via 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, a wireless device may be a communication modem / circuit / chip.

[0412] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and may also include one or more transceivers 206 and / or one or more antennas 208. The processor 202 may control the memory 204 and / or the transceiver 206 and may be configured to implement the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed herein. For example, the processor 202 may process information in the memory 204 to generate third information / signals, and then transmit a wireless signal including the third information / signals 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 code including instructions for executing all or part of the processing controlled by the processor 202 or for executing the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed herein. 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 via 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, a wireless device may be a communication modem / circuit / chip.

[0413] The hardware elements of the wireless devices 100 and 200 will now be described in more detail. One or more protocol layers may be implemented by, but are not limited to, one or more processors 102 and 202. For example, the 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)). The 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 herein. The 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 herein and provide the messages, control information, data, or information to the one or more transceivers 106 and 206. The 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 descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document, and provide the generated signal to the one or more transceivers 106 and 206. The one or more processors 102 and 202 may receive a signal (e.g., a baseband signal) from the one or more transceivers 106 and 206 and obtain the PDU, SDU, message, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document.

[0414] 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 flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document may be included in one or more processors 102 and 202 or 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.

[0415] 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, a hard drive, registers, cache memory, a computer-readable storage medium, and / or a combination thereof. One or more memories 104 and 204 may be located internally and / or externally to 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.

[0416] One or more transceivers 106 and 206 may transmit user data, control information, and / or wireless signals / channels mentioned in the methods and / or operational flowcharts 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 descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and transmit and receive wireless signals. For example, one or more processors 102 and 202 may execute control so that one or more transceivers 106 and 206 may transmit user data, control information, or wireless signals to one or more other devices. One or more processors 102 and 202 may execute 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 transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, processes, proposals, methods, and / or operational flow charts disclosed in this document through one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert received wireless signals / channels from RF band signals to baseband signals so that the received user data, control information, and wireless signals / channels may be processed using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert 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.

[0417] Example of use of a wireless device to which the present disclosure is applied

[0418] Figure 28 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 Figure 26 ) are implemented in various forms.

[0419] Reference Figure 28 , the wireless devices 100 and 200 may correspond to Figure 27The wireless devices 100 and 200 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 additional components 140. The communication unit 110 may include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 may include Figure 27 One or more processors 102 and 202 and / or one or more memories 104 and 204. For example, the transceiver 114 may include Figure 27 The control unit 120 is electrically connected to the communication unit 110, the memory unit 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 / instructions / information stored in the memory unit 130. The control unit 120 may transmit information stored in the memory unit 130 to the outside (e.g., other communication devices) via the communication unit 110 via a wireless / wired interface, or store information received from the outside (e.g., other communication devices) via the communication unit 110 via the wireless / wired interface in the memory unit 130.

[0420] 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 the following ways: Figure 19 100a), vehicles ( Figure 26 100b-1 and 100b-2), XR devices ( Figure 26 100c), handheld device ( Figure 26 100d), household appliances ( Figure 26 100e), IoT devices ( Figure 26 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 ( Figure 26 400), BS( Figure 26 200), network nodes, etc. Depending on the use case / service, the wireless device can be mobile or fixed.

[0421] exist Figure 28In the wireless devices 100 and 200, the various elements, components, units / portions, and / or modules may all be connected to each other via a wired interface, or at least a portion thereof may be wirelessly connected via 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 via the communication unit 110. The various elements, components, units / portions, 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 unit 130 may be configured using RAM, dynamic RAM (DRAM), ROM, flash memory, volatile memory, non-volatile memory, and / or a combination thereof.

[0422] Examples of vehicles or autonomous driving vehicles to which the present disclosure is applied

[0423] Figure 29 A vehicle or autonomous driving vehicle applicable to the present disclosure is shown. The vehicle or autonomous driving vehicle can be implemented as a mobile robot, a car, a train, a manned / unmanned aerial vehicle (AV), a ship, etc.

[0424] Reference Figure 29 , 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 Figure 28 Blocks 110 / 130 / 140.

[0425] The communication unit 110 can send and receive signals (e.g., data and control signals) to and from external devices such as other vehicles, base stations (e.g., gNBs and roadside units), and servers. The control unit 120 can perform various operations by controlling components of the vehicle or autonomous vehicle 100. The control unit 120 may include an ECU. The drive unit 140a enables the vehicle or autonomous vehicle 100 to travel on a road. The drive unit 140a may include an engine, a motor, a power system, wheels, brakes, a steering system, and the like. The power supply unit 140b can supply power to the vehicle or autonomous vehicle 100 and may include wired / wireless charging circuitry, a battery, and the like. The sensor unit 140c can acquire information regarding vehicle status, surrounding environment information, user information, and the like. The sensor unit 140 c 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 location module, a vehicle forward / backward 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 140 d may implement a technology for maintaining the lane in which the vehicle is traveling, a technology for automatically adjusting the 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, etc.

[0426] For example, the communication unit 110 may receive map data, traffic information data, and the like from an external server. The autonomous driving unit 140d may generate an autonomous driving route and driving plan based on the obtained data. The control unit 120 may control the drive unit 140a so that the vehicle or autonomous driving vehicle 100 moves along the autonomous driving route according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit 110 may aperiodically or periodically obtain recent 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 regarding the vehicle's status and / or surrounding environment. 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 regarding the vehicle's location, autonomous driving route, and / or driving plan to the external server. The external server may use AI technology to predict traffic information data 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.

[0427] 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 construed in all respects as 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 coming within the meaning and equivalent range of the appended claims are intended to be encompassed therein.

[0428] Industrial Applicability

[0429] As described above, the present disclosure is applicable to various wireless communication systems.

Claims

1. A method for transmitting and receiving signals by a user equipment (UE) operating in a wireless communication system, the method comprising the following steps: Determining an interlace for sending a physical uplink control channel (PUCCH), the interlace including 10 resource blocks (RBs); as well as sending the PUCCH on the interlace, wherein the PUCCH comprises a PUCCH sequence, wherein a cyclic shift CS value is different for each of the 10 RBs in the interlace, and The PUCCH sequence is repeatedly mapped to each of the 10 RBs, and the length of the PUCCH sequence is 12, and The CS value varies according to a modulo operation based on (i) a value obtained by multiplying an RB index of each RB by 5 and (ii) the length of the PUCCH sequence.

2. The method according to claim 1, wherein A phase shift PS value of the PUCCH sequence varies based on the RB index of each RB, and wherein the PS value is determined by a specific pattern to have a value for each RB.

3. The method according to claim 2, wherein: The specific pattern is determined such that a PS value of an RB with a lowest index in the interlace is fixed to 1 and PS values ​​to be applied to remaining RBs in the interlace are selected based on a peak-to-average power ratio (PAPR) and a cubic metric (CM).

4. The method according to claim 1, wherein RB indexes are sequentially assigned to the RBs based on frequency locations of the RBs in the interlaces.

5. A user equipment (UE) configured to send and receive 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 connected to the at least one processor and configured to store instructions that, when executed, cause the at least one processor to perform operations comprising: determining an interlace for sending a physical uplink control channel (PUCCH), the interlace including 10 resource blocks (RBs); and sending the PUCCH on the interlace, wherein the PUCCH comprises a PUCCH sequence, wherein a cyclic shift CS value is different for each of the 10 RBs in the interlace, and The PUCCH sequence is repeatedly mapped to each of the 10 RBs, and the length of the PUCCH sequence is 12, and The CS value varies according to a modulo operation based on (i) a value obtained by multiplying an RB index of each RB by 5 and (ii) the length of the PUCCH sequence. The UE according to claim 5 , wherein: A phase shift PS value of the PUCCH sequence varies based on the RB index of each RB, and wherein the PS value is determined by a specific pattern to have a value for each RB.

7. The UE according to claim 6, wherein: The specific pattern is determined such that a PS value of an RB with a lowest index in the interlace is fixed to 1 and PS values ​​to be applied to remaining RBs in the interlace are selected based on a peak-to-average power ratio (PAPR) and a cubic metric (CM).

8. The UE according to claim 5, wherein: RB indexes are sequentially assigned to the RBs based on frequency locations of the RBs in the interlaces.

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