CN114128370A - Terminal and wireless communication method - Google Patents

Abstract

A terminal according to one aspect of the present disclosure includes: a control unit configured to determine a parameter related to at least one of a PUCCH format, a sequence for the PUCCH, a time domain position of a demodulation reference signal (DMRS) for the PUCCH, a length of the PUCCH, and a bandwidth of the PUCCH, for transmission of a Physical Uplink Control Channel (PUCCH); and a transmission unit configured to transmit Uplink Control Information (UCI) on the PUCCH, wherein a parameter in a second frequency range higher than a first frequency range is different from a parameter in the first frequency range. According to an aspect of the present disclosure, even when a high frequency band is used, communication can be appropriately performed.

Description

Terminal and wireless communication method

Technical Field

The present disclosure relates to a terminal and a wireless communication method in a next generation mobile communication system.

Background

In a Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) is standardized for the purpose of further high data rate, low latency, and the like (non-patent document 1). In addition, LTE-Advanced (3GPP rel.10-14) is standardized for the purpose of further increasing the capacity and the height of LTE (Third Generation Partnership Project (3GPP)) versions (Release (Rel.))8 and 9).

Successor systems to LTE (e.g., also referred to as a 5th generation mobile communication system (5G)), 5G + (plus), New Radio (NR), 3GPP rel.15 and beyond) are also being studied.

Documents of the prior art

Non-patent document

Non-patent document 1: 3GPP TS 36.300V8.12.0 "Evolved Universal Radio Access (E-UTRA) and Evolved Universal Radio Access Network (E-UTRAN); (ii) an Overall description; stage 2(Release 8) ", 4 months 2010

Disclosure of Invention

Problems to be solved by the invention

In future wireless communication systems (for example, NR after rel.16), use of a frequency band or a frequency range (frequency range) higher than a specific frequency (for example, 7.125GHz, 24.25GHz, 52.6GHz, or the like) is being studied.

In a frequency band higher than a specific frequency, it is assumed that phase noise (phase noise) becomes large and Peak-to-Average Power ratio (PAPR) has higher sensitivity (sensitivity).

However, how to perform communication control (for example, channel design) at a frequency higher than a specific frequency has not been sufficiently studied.

Therefore, an object of the present disclosure is to provide a terminal and a wireless communication method capable of appropriately performing communication even when a high frequency band is used.

Means for solving the problems

A terminal according to one aspect of the present disclosure includes: a control unit configured to determine a parameter related to at least one of a PUCCH format, a sequence for the PUCCH, a time domain position of a demodulation reference signal (DMRS) for the PUCCH, a length of the PUCCH, and a bandwidth of the PUCCH, for transmission of a Physical Uplink Control Channel (PUCCH); and a transmission unit configured to transmit Uplink Control Information (UCI) on the PUCCH, wherein a parameter in a second frequency range higher than a first frequency range is different from a parameter in the first frequency range.

Effects of the invention

According to an aspect of the present disclosure, communication can be appropriately performed even in the case of using a high frequency band.

Drawings

FIG. 1 is a diagram showing an example of FR.

Fig. 2 is a diagram showing an example of a symbol time length corresponding to a subcarrier interval.

Fig. 3A to 3E are diagrams showing an example of PUCCH formats in rel.15nr.

Fig. 4 is a diagram showing an example of UCI transmission using PF 0.

Fig. 5A and 5B are diagrams showing an example of a cyclic shift index for PF 0.

Fig. 6 is a diagram showing an example of UCI transmission using PF 1.

Fig. 7 is a diagram showing an example of mapping of PF 2.

Fig. 8 shows an example of PFa 1.

Fig. 9 shows an example of PFb 1.

Fig. 10 shows an example of PFa 2.

Fig. 11 shows an example of PFb 2.

Fig. 12 shows an example of PFa 3.

Fig. 13 is a diagram illustrating an example of PFb 3.

Fig. 14 shows an example of sequence sets used for PF0 and PF 1.

Fig. 15 shows an example of PFc 1.

Fig. 16 is a diagram showing an example of UCI transmission using PFc 2.

Fig. 17 shows an example of PFc 3.

Fig. 18 is a diagram showing an example of a new slot and a new PRB.

Fig. 19 is a diagram showing an example of a table of DMRS positions.

Fig. 20 is a diagram illustrating an example of DMRS positions.

Fig. 21 is a diagram showing another example of a table of DMRS positions.

Fig. 22 is a diagram illustrating another example of DMRS positions (without additional DMRSs).

Fig. 23 is a diagram showing another example of DMRS positions (with DMRS added).

Fig. 24 is a diagram illustrating an example of a table of conventional DMRS positions.

Fig. 25 is a diagram showing an example of DMRS positions based on a conventional DMRS position table.

Fig. 26 is a diagram illustrating an example of a method for determining a DMRS position.

Fig. 27 is a diagram illustrating another example of a method for determining a DMRS position.

Fig. 28 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment.

Fig. 29 is a diagram showing an example of the configuration of a base station according to an embodiment.

Fig. 30 is a diagram showing an example of the configuration of a user terminal according to an embodiment.

Fig. 31 is a diagram showing an example of hardware configurations of a base station and a user terminal according to an embodiment.

Detailed Description

(FR)

In NR, the utilization of the (up to)52.6GHz band up to 52.6GHz is studied. In the NR after rel.16, it is considered to use a band higher than 52.6GHz (above 52.6 GHz). In addition, the frequency band may also be referred to as a Frequency Range (FR) as appropriate.

FIG. 1 is a diagram showing an example of FR. As shown in fig. 1, FR (FRx (x is an arbitrary character string)) as a target is, for example, 52.6GHz to 114.25 GHz. In addition, as the frequency range in NR, FR1 was 410MHz to 7.152GHz, and FR2 was 24.25GHz to 52.6 GHz.

In a frequency band higher than 52.6GHz, it is assumed that phase noise (phase noise) increases and propagation loss (propagation loss) increases. In addition, it is assumed that the Peak-to-Average Power ratio (PAPR) and at least one of the non-linear (non-linear) PAs have a higher sensitivity (sensitivity).

At least one of a large (wide) subcarrier spacing (SCS) (i.e., a small number of FFT points), a single-carrier waveform, a structure of PAPR reduction in the large SCS, a narrow beam (i.e., a large number of beams) is requested.

If the above is taken into consideration, a wider structure of SCS (e.g., at least one of CP-OFDM and DFT-s-OFDM) is considered in a frequency band higher than 52.6GHz (or a waveform for exceeding 52.6 GHz).

Fig. 2 is a diagram showing an example of the symbol time length in each SCS. In fig. 2, the subcarrier intervals are 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz, and 960kHz, but other subcarrier intervals may be defined. The numerical values shown in fig. 2 are examples, and are not limited to these.

In the case of a Normal Cyclic Prefix (NCP), 1 slot is composed of 14 symbols, and in the case of an Extended Cyclic Prefix (ECP), 1 slot is composed of 12 symbols. Of course, the number of symbols constituting a slot is not limited thereto.

The waveform in high frequency may be CP-OFDM or DFT-S-OFDM with large SCS. If the number of symbols within a slot is maintained independent of the SCS, the larger SCS derives a shorter time length of symbols or Cyclic Prefix (CP). In order to maximize coverage and power amplification efficiency, a DL control channel structure supporting a low PAPR is preferable.

(PUCCH format)

In future wireless communication systems (e.g., rel.15 and later, 5G, NR, etc.), a configuration (also referred to as a format, PUCCH Format (PF), etc.) for an uplink control channel (e.g., PUCCH) used for transmission of Uplink Control Information (UCI)) is being studied. For example, Rel.15NR has been studied to support 5 PF0 to PF4 as shown in FIGS. 3A to 3E. The names of the PFs shown below are merely examples, and different names may be used.

For example, PF0 and PF1 are PFs used for transmission of UCI of 2bits or less (up to 2 bits). For example, the UCI may be at least one of transmission Acknowledgement information (also referred to as Hybrid Automatic Repeat reQuest Acknowledgement (HARQ-ACK)), Acknowledgement (ACK), negative-Acknowledgement (nack), or the like), and Scheduling ReQuest (SR)). PF0 can be allocated to 1 or 2 symbols, and is also referred to as a short PUCCH or a sequence-based (sequence-based) short PUCCH. On the other hand, PF1 is also called a long PUCCH or the like because it can be allocated to 4 to 14 symbols. PF0 may transmit a sequence obtained by cyclic shift of a reference sequence (base sequence) using a Cyclic Shift (CS) corresponding to the value of UCI. In PF1, a plurality of user terminals may be Code Division Multiplexed (CDM) in the same Physical Resource Block (PRB) by block spreading in the time domain using at least one of CS and a Time Domain (TD) -Orthogonal Cover Code (OCC). PF0 and PF1 may also be mapped to one PRB.

The PF2-4 is a PF used in transmission of a (more than 2bits) UCI (e.g., Channel State Information (CSI)), or at least one of CSI and HARQ-ACK and SR) exceeding 2 bits. PF2 can be allocated to 1 or 2 symbols, and is therefore also referred to as a short PUCCH or the like. On the other hand, PF3 and PF4 are also called long PUCCH and the like because they can be allocated to 4 to 14 symbols. In PF4, a plurality of user terminals may also be CDM using block spreading (frequency domain (FD) -OCC) before DFT. PF2 and PF3 may be mapped to 1-16 PRBs. PF4 may also be mapped to 1 PRB.

Intra-slot frequency hopping (intra-slot frequency hopping) may also be applied to PF1, PF3, PF 4. If the length of PUCCH is set as N_symbThe length before (first hop) hopping can be floor(N_symb2), the length after frequency hopping (second hop) may be ceil (N)_symb/2)。

The waveforms of PF0, PF1, and PF2 may be Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP) -Orthogonal Frequency Division Multiplexing (OFDM). The waveform of PF3 or PF4 may be Discrete Fourier Transform spread OFDM (DFT) -spread(s) -OFDM.

Allocation (allocation) of resources (for example, PUCCH resources) used for transmission of the uplink control channel is performed using higher layer signaling and/or Downlink Control Information (DCI). Here, the higher layer signaling may be at least one of RRC (Radio Resource Control) signaling, System Information (e.g., Remaining Minimum System Information (RMSI), Other System Information (OSI), Master Information Block (MIB), at least one of System Information Block (SIB), and Broadcast Information (Physical Broadcast Channel)).

Specifically, one or more sets (PUCCH resource sets) each including one or more PUCCH resources are notified (configured) to the user terminal by higher layer signaling. For example, K (e.g., 1. ltoreq. K.ltoreq.4) PUCCH resource sets may be notified to the user terminal from the radio base station. Each PUCCH resource set can also include M (e.g., 1 ≦ M ≦ 32) PUCCH resources.

The user terminal may determine a single PUCCH resource set (first PUCCH resource set) from the set K PUCCH resource sets based on the UCI payload size (UCI payload size, UCI information bit number). The UCI payload size may also be the number of UCI bits without including Cyclic Redundancy Check (CRC) bits.

The user terminal may determine a PUCCH resource to be used for transmission of UCI based on at least one of DCI and implicit (indication) information (implicit indication information, implicit index, or the like) from among M PUCCH resources included in the determined PUCCH resource set. For example, the implicit indication information may be a starting CCE index received on a PDCCH carrying the DCI.

Each PUCCH resource set to the user terminal may include a value of at least one parameter (also referred to as a field, information, or the like) described below. In addition, the range of values that can be set for each PUCCH format may be determined for each parameter.

Symbol to start PUCCH allocation (start symbol)

Number of symbols allocated to PUCCH in slot (period allocated to PUCCH)

Index of Resource Block (Physical Resource Block) for starting PUCCH allocation

Number of PRBs allocated to PUCCH

Whether or not frequency hopping is made efficient for PUCCH

Frequency resource of second hop in case of effective frequency hopping, index of initial Cyclic Shift (CS)

An index of an Orthogonal spreading Code (for example, OCC: Orthogonal Code) in a time domain (time-domain), a length of an OCC used for block spreading before Discrete Fourier Transform (DFT) (also referred to as OCC length, spreading frequency, etc.)

Index of OCC used in block-wise spreading after DFT

PF0 or PF1 used sequences.

As shown in FIG. 4, PF0 uses a value based on an initial cyclic shift (initial cyclic shift) A and UCI (at least one of HARQ-ACK and SR)_xWill pass through the 12-bit reference sequence X (phase rotation)₀，…，X₁₁The sequence obtained by the cyclic shift of (3) is mapped to 1 PRB. The initial cyclic shift a may also be set by higher layer signaling. For example, as shown in FIG. 5A, the cyclic shift α corresponding to 1-bit HARQ-ACK information {0, 1}_xAre 0 and 6, respectively. For example, as shown in FIG. 5B, the cyclic shift α corresponding to 2-bit HARQ-ACK information {00, 01, 11, 10}_xAre 0, 3, 6, 9, respectively.

As shown in fig. 6, PF1 maps a signal obtained by multiplying a 12-bit reference sequence and a sequence based on cyclic shift and TD-OCC to each of a UCI symbol and a DMRS symbol that are modulated and channel-coded, to 1 PRB.

In addition, in the present disclosure, the sequence is mapped in the increasing direction of the frequency, but the sequence may be mapped in the decreasing direction of the frequency.

In rel.15, as a low Peak to Average Power Ratio (PAPR) sequence, a constant amplitude zero auto-correlation (cazac) sequence is defined for a length of 36 or more. For lengths shorter than 36, a Computer Generated Sequence (CGS) is defined that takes into account PAPR and cross-correlation. The CAZAC sequence having a length of a prime number achieves an ideal PAPR (i.e., PAPR 1), otherwise the PAPR deteriorates.

Preferably, the PAPR is reduced at a high frequency.

In PF2 (short PUCCH) of rel.15nr, DMRS and UCI are orthogonal Frequency Division Multiplexed (FDM) as shown in fig. 7. The DMRS may also be mapped to 1 subcarrier of every 3 subcarriers. UCI may be mapped to the remaining subcarriers. The waveform of PF2 is CP-OFDM. Therefore, the PAPR of PF2 becomes high, and performance deteriorates at high frequencies.

It is not clear whether all PFs are supported in frequencies higher than a specific frequency. PF is not suitable in high frequencies.

In rel.15, the maximum length of the long PUCCH is 1 slot (14 symbols), and each PF is based on PRB (12 subcarriers). In high frequencies, the definition of at least one of the time slot and the PRB may become inadequate.

Thus, there is a possibility that the rel.15 PUCCH cannot be appropriately performed in a specific frequency range. If the PUCCH is not appropriate, degradation of system performance may result.

The present inventors have conceived the present invention in view of the need to perform PUCCH transmission in a specific frequency range, which is different from the conventional PUCCH transmission. The specific frequency range may be a frequency higher than the specific frequency. For example, the specific frequency may be 7.125GHz, 24.25GHz, 52.6GHz, or the like. The parameter relating to at least one of the PUCCH format, the PUCCH sequence, the time domain position of the DMRS for the PUCCH, the PUCCH length, and the PUCCH bandwidth may be different between a specific frequency range and other frequency ranges.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. The following embodiments may be used alone or at least 2 of them may be used in combination.

Further, the embodiments are applicable not only to the above FR4 (for example, a frequency higher than 52.6GHz), but also to conventional FR1 and FR 2.

In the present disclosure, the first frequency range may also be replaced with a frequency range having a frequency lower than the specific frequency. In the present disclosure, the second frequency range may be a frequency range having a higher frequency than the specific frequency or a specific frequency range. In the present disclosure, at least one of a signal, a sequence, information, a channel is mapped to a resource (e.g., PRB, RE, symbol, etc.), and may be replaced with configuration, allocation (allocation), etc.

The name of the PF is not limited to the names (Pfa, PFb, PFc, etc.) shown in the embodiments, and may be replaced by another number, latin alphabet, symbol, or a combination thereof.

(Wireless communication method)

< embodiment 1>

A new PUCCH Format (PF) for UCI transmission up to 2bits may be supported in a specific frequency range (e.g., FR 4).

It is also possible to use a new PF in a specific frequency range and to use PF0 or PF1 in a frequency range other than the specific frequency range.

The sequence used in the new PF may be a low-Peak to Average Power Ratio (low PAPR) sequence, or may be a Pseudo-Random (Pseudo-noise) sequence (e.g., Gold sequence, M sequence). The low PAPR sequence may be a Constant Amplitude Zero Auto Correlation (CAZAC) sequence (for example, Zadoff-Chu sequence), or a sequence based on the CAZAC sequence (for example, a computer-generated sequence (cgs)) defined in a standard table).

The length M of the sequence used in the new PF may be any one of a prime number, a positive integer, and a natural number.

The new PF may be a new short PUCCH format (Pfa, sequence-based UCI transmission) in which at least one of HARQ-ACK and SR is transmitted by a change in Cyclic Shift (CS) based on PF 0.

The new PF may be a new long PUCCH format (PFb) for transmitting at least one of HARQ-ACK and SR by a Binary Phase Shift Keying (BPSK) or Quadrature Phase Shift Keying (QPSK) signal obtained by multiplying the new PF by a base sequence (base sequence) based on PF 1.

The new PF (PFa or PFb) may be at least one of the following transmission methods 1-1 to 1-3.

Transmitting method 1-1

A 12N-bit sequence may also be mapped to N PRBs.

N may be defined in the specification, may be set for the UE, or may be indicated for the UE. For example, N ═ 3 may also be defined in the specification.

N may also be associated with FR. At least one of FR 1-FR 4 may be divided into a plurality of partial frequency ranges (sub-FRs). For example, a frequency range of FR4 having a frequency lower than the specific frequency in FR4 may be FR4-1, and a frequency range of FR4 having a frequency higher than the specific frequency in FR4 may be FR 4-2. For example, in the specification, N-3 may be defined for FR4-1 and N-5 may be defined for FR 4-2.

Fig. 8 shows an example of PFa (PFa1) when N is 3.

In this example, as the resource for PFa, a time length of 1 symbol or 2 symbols and a bandwidth of N (3) PRB (12N (36) Resource Element (RE)) may be allocated to the UE. The UE may also use a cyclic shift (dependent on the value of UCI) α associated with the value of UCI_xWill pass through a reference sequence [ X ] of length 12N (36)₀，…，X₃₅]Cyclic shift of alpha_xThe obtained sequence is mapped to 3PRB for each symbol.

Fig. 9 shows an example of PFb (PFb1) when N is 3.

In this example, as the resource for PFb, a time length of 4 symbols or more and a bandwidth of N (3) PRB (3N (36) RE) may be allocated to the UE. The UE may also multiply a complex coefficient or DMRS for UCI mapped to each symbol by a reference sequence of length 12N (36) for each RE [ Y₀，…，Y₃₅]Is mapped to 3 PRB.

By using a sequence longer than 12 in the new PF, at least one of PAPR and cross-correlation can be reduced.

Transmitting method 1-2

A sequence of M bits may also be mapped to N PRBs.

M may also be less than N. N may be 11N or may be a maximum coefficient smaller than 12N.

M may be limited to 31 or more. N may be limited to 3 or more.

The sequence may be mapped continuously from the lowest RE within N PRBs, or may be mapped continuously from the highest RE within N PRBs. In the remaining REs of the N PRBs, no signal (e.g., information, RS) may be mapped.

Fig. 10 shows an example of PFa (PFa2) when N is 3 and M is 31.

In this example, as the resource for PFa2, a time length of 1 symbol or 2 symbols and a bandwidth of N (3) PRB (12N (36) RE) may be allocated to the UE. The UE may also use a cyclic shift (dependent on the value of UCI) α associated with the value of UCI_xWill pass through a reference sequence [ X ] of length M (31)₀，…，X₃₀]Cyclic shift of alpha_xThe obtained sequence is mapped continuously from the lowest RE in 3PRB for each symbol.

Fig. 11 shows an example of PFb (PFb2) when N is 3 and M is 31.

In this example, as the resource for PFb2, a time length of 4 symbols or more and N (3) PRB (3N (36) RE) may be allocated to the UEThe bandwidth of (c). The UE may multiply a complex coefficient or DMRS for UCI mapped to each symbol by a reference sequence of length M (31) for each RE₀，…，Y₃₀]And is mapped continuously from the lowest RE in the 3 PRBs.

By using a sequence of an arbitrary length for the new PF, at least one of PAPR and cross-correlation can be reduced. For example, a CAZAC sequence having a length of a coefficient can be used, and PAPR and cross-correlation can be reduced.

Transmitting method 1-3

A sequence of coefficients M bits may also be mapped to M REs. M may also be a value that does not take into account PRBs. That is, the scheduling of PUCCH may be handled not on an RB basis but on an RE basis.

M may be limited to 31 or more.

Fig. 12 shows an example of PFa (PFa3) when M is 13.

In this example, as the resource for PFa3, the UE may be allocated a time length of 1 symbol or 2 symbols and a bandwidth of M (13) REs. The UE may also use a cyclic shift (dependent on the value of UCI) α associated with the value of UCI_xWill pass through a reference sequence [ X ] of length M (13)₀，…，X¹²]Cyclic shift of alpha_xThe obtained sequence is mapped to 13 REs for each symbol.

Fig. 13 shows an example of PFb (PFb3) when M is 13.

In this example, as the resource for PFb3, a time length of 4 symbols or more and a bandwidth of M (13) REs may be allocated to the UE. The UE may also multiply a complex coefficient or DMRS for UCI mapped to each symbol by a reference sequence of length M (13) for each RE to obtain a sequence [ Y₀，…，Y₁₂]And maps to 13 REs.

By using a sequence of an arbitrary length for the new PF, at least one of PAPR and cross-correlation can be reduced. For example, CAZAC sequences having a coefficient length may be used, and PAPR and cross-correlation may be reduced.

According to embodiment 1, the UE can transmit UCI up to 2bits on a PUCCH having a low PAPR.

< embodiment 2>

The sequence sets used in PF0 and PF1 may also be updated (fig. 14). Length (M) of sequences contained in a sequence set_ZC) Or may be 12.

The sequence set may be at least one of the following sequence sets 1 to 3. At least one of the sequence sets 1 to 3 may be used in at least one of Pfa and PFb in embodiment 1.

Sequence set 1

A new sequence set for at least one of PF0 and PF1 may also be defined independently from the existing (rel.15nr) sequence set.

The new sequence set may be used for at least one of PF0 and PF1 in a specific frequency range (e.g., FR4), and the existing sequence set may be used for at least one of PF0 and PF1 in a frequency range other than the specific frequency range.

When any one of the Pcell, PSCell, and PUCCH SCell is set in a specific frequency range, a new sequence set may be used for at least one of PF0 and PF 1.

Sequence set 2

A new sequence set for at least one of PF0 and PF1 may also be defined independently from the existing (rel.15nr) sequence set.

The UE may also be notified (at least one of configuration, indication, and activation) whether to use any one of a new sequence set and an existing sequence set for at least one of PF0 and PF 1. Either one of the new sequence set and the existing sequence set may be indicated by DCI indicating a PUCCH resource, may be activated by a MAC CE, may be associated with CORESET used for reception of PDCCH indicating a PUCCH resource, may be associated with a search space used for reception of PDCCH indicating a PUCCH resource, or may be associated with RNTI that scrambles CRC of DCI indicating a PUCCH resource.

Sequence set 3

The new sequence may also be added to the existing (Rel.15NR) sequence set. For example, a new sequence having a sequence index of 30 or more may be added to a sequence set in which sequences having sequence indices of 0 to 29 are defined.

According to embodiment 2, a sequence in which the PAPR is considered in comparison with the cross correlation (i.e., inter-cell interference) can be used for at least one of PF0 and PF 1.

< embodiment 3>

In a certain frequency range (e.g., FR4), a new pf (pfc) may also be introduced, which is used to send more than 2bits of UCI using 1 or 2 symbols. The symbol length may also be greater than 2 symbols.

The UE may apply at least one of the transmission method according to embodiment 1 and the sequence set according to embodiment 2 to the sequence PFc.

PFc may be at least one of the following transmission methods 2-1 to 2-3.

Method for sending 2-1

In the new PF (PFc1), DMRS and UCI may also be Time Division Multiplexed (TDM). DFT-s-OFDM (transform precoding) may also be applied to PFc 1.

PFc1 may also be 2 symbol PUCCH without intra-slot Frequency Hopping (FH).

QPSK or pi/2-BPSK may also be used for PFc 1. Which of QPSK and pi/2-BPSK is used for PFc1 may be specified in the specification or may be set for the UE.

Fig. 15 shows an example of PFc 1. The UE may be allocated 2 symbols and 2 PRBs as a resource of PFc1, with DMRS mapped across the 2 PRBs of the first symbol and UCI mapped across the 2 PRBs of the second symbol.

Method for sending 2-2

In the new PF (PFc2), more UCI than 2bits may also be transmitted through a change in cyclic shift.

The UE may also not transmit the DMRS at PFc 2.

The UE may also decide PFc 2a bandwidth (number of PRBs or number of REs) based on at least one of UCI payload size and sequence length.

For PFc2, a bandwidth wider than 16PRB may be specified in the specification or may be set to the UE. In high frequencies (e.g., FR4), frequency selectivity is assumed to be small.

Fig. 16 is a diagram showing an example of UCI transmission using PFc 2. In this example, as the resource for PFc2, the UE may be allocated a time length of 1 symbol or 2 symbols and a bandwidth of 20PRB (240 RE). The UE may also use a cyclic shift (dependent on the value of UCI) α associated with the value of UCI_xWill pass through a reference sequence of length 240 [ X ]₀，…，X₂₃₉]Cyclic shift of alpha_xThe obtained sequence is mapped to 20 PRBs for each symbol.

Method for sending (2-3)

The new PF (PFc3) may be a combination of transmission methods 2-1 and 2-2.

As shown in fig. 17, the UE may transmit UCI by a change in cyclic shift (sequence-based UCI transmission similar to the transmission method 2-2) in the first symbol. The UE may map a sequence obtained by cyclic shift of the reference sequence to the first symbol using the cyclic shift associated with the value of the UCI. The sequence used for the first symbol may also be used for estimation of the channel. Sequences may also be treated as DMRS. A part of the sequence (several specific REs) may also be treated as DMRS.

The UE may also map the modulated and channel coded UCI to a second symbol.

The UE may also send at least one of HARQ-ACK and SR on the first symbol and CSI on the second symbol. The UE may also send only the first symbol of PFc 3. The UE may also transmit at least one of the HARQ-ACK and the SR in 1 symbol, and the UE may also repeatedly transmit at least one of the HARQ-ACK and the SR across 2 symbols. The UE may also send CSI only through PFc3 of 2 symbols.

PFc3 may also be more than 2 symbols. For example, PFc3 may be a PUCCH with up to 4 symbols. The UE may also map a sequence obtained by cyclic shift of a reference sequence to a first symbol, and map the modulated and channel-coded UCI after a second symbol. The UE may also map a sequence obtained by cyclic shift of the reference sequence to odd-numbered (e.g., first, third …) symbols ( symbol indexes 0, 2, …), and map UCI modulated and channel-coded to even-numbered (e.g., second, fourth …) symbols ( symbol indexes 1, 3, …).

In PFc3, the order of the symbol to which the sequence obtained by cyclic shift of the reference sequence is mapped and the symbol to which the UCI modulated and channel-coded is mapped is not limited to the above example. For example, the UE may map the UCI modulated and channel-coded to a first symbol (odd-numbered symbol) and map a sequence obtained by cyclic shift of the reference sequence to a second symbol (even-numbered symbol).

According to PFc3, the UE can send more UCI than 2bits on PUCCH with low PAPR.

According to this embodiment, in a specific frequency range, more than 2bits of UCI can be appropriately transmitted using a short PUCCH (e.g., a PUCCH having a length shorter than PF3, PF 4).

< embodiment 4>

In a specific frequency range (e.g., FR4), the UE may not expect to transmit PF 2.

In the case where the PUCCH of 1 or 2 symbols is rarely used in high frequency, according to the present embodiment, it is possible to prevent performance degradation due to the use of PF2 in high frequency.

< embodiment 5>

In a specific frequency range (e.g., FR4), several PFs may not be set in PUCCH setting information (e.g., PUCCH-Config).

The PUCCH Resource set (PUCCH-Resource set) in the PUCCH setting information or the PUCCH Resource (PUCCH-Resource) in the PUCCH Resource set may include several PFs usable in a specific frequency range.

When the PCell, PSCell, or PUCCH SCell is set in a specific frequency range, the PUCCH resource set or PUCCH resource in the PUCCH setting information for the cell may include several PFs usable in the specific frequency range.

The short PUCCH (e.g., PUCCH of 2 symbols or less) may not be used in a specific frequency range. PFs usable in a specific frequency range may not include at least one of PF0 and PF 2. PFs that may be used in a particular frequency range may also include PF1 and at least one of PF3 and PF 4.

The PFs that can be used in a specific frequency range may also include a new PF (for example, at least one of the new PFs, pfas, PFb, and PFc of embodiments 1 to 4).

According to this embodiment, since it is not necessary to consider the performance of the PF that is not actually used, the UE implementation cost can be reduced.

< embodiment 6>

At least one of PF1, PF3, PF4, and a new PF (for example, at least one of the new PFs, pfas, PFb, and PFc in embodiments 1 to 4) may support a time length greater than 14 symbols.

The length of time supported by at least one of PF1, PF3, PF4, and the new PF may also be 1 slot. The 1 slot may also be longer than 14 symbols. The 1PRB may also be narrower than the 12 subcarriers. For example, as shown in fig. 18, a1 slot may be 28 symbols, and a 1PRB may also be 6 subcarriers.

For PF3 or PF4, at least one of the following DMRS positions 1-1 and 1-2 may also be used.

DMRS position 1-1

A new DMRS location in the time domain may also be defined. The UE may also decide DMRS positions for more than 14 symbols of time length based on the definition of new DMRS positions (e.g., a table defined in the specification). The DMRS location may be configured according to any one of the following examples 1 and 2.

[ example 1]

As shown in fig. 19, the DMRS positions for the PUCCH length (number of symbols) may be defined in a standardized table. According to this table, as shown in fig. 20, DMRS positions may also be defined so that the number of DMRSs is maintained independent of the PUCCH time length.

[ example 2]

As shown in fig. 21, DMRS positions for PUCCH lengths may be defined in a standardized table. Fig. 22 shows DMRS positions based on the table when DMRS is set to be absent, and fig. 23 shows DMRS positions based on the table when DMRS is set to be present. In this way, DMRS positions may also be defined in a manner of maintaining the density of DMRSs independent of PUCCH time length.

DMRS position 1-2

The new DMRS location in the time domain may also be derived from multiple definitions of existing (e.g., rel.15) new DMRS locations (e.g., multiple rows (entries) within an existing table). The UE may determine DMRS positions for more than 14 symbols of time length based on multiple definitions of existing new DMRS positions.

For example, when the PUCCH length L is 15 to 28, the PUCCH may be divided into two parts in order to determine the DMRS position. The length of the first portion may be floor (L/2) and the length of the second portion may be ceil (L/2). The UE may determine the DMRS positions of the respective sections using entries corresponding to the lengths of the respective sections in the existing table as shown in fig. 24.

For example, as shown in fig. 25, in case that the PUCCH length is 20 symbols, the length of the first part is 10 symbols and the length of the second part is 10 symbols. For example, in case that the PUCCH length is 25 symbols, the length of the first part is 12 symbols and the length of the second part is 13 symbols.

For PF1, at least one of the next DMRS locations 2-1 and 2-2 may also be used. For PFb, at least one of the next DMRS positions 2-1 and 2-2 may also be used.

DMRS position 2-1

The UE may alternately map the DMRS and the UCI in a time domain. The UE may also continuously map the DMRS and UCI to the time domain from the mapping (indexing) of the DMRS for the existing (rel.15) PF 1. For example, the UE may also map the DMRS to odd-numbered (e.g., first, third …) symbols ( symbol indexes 0, 2, …) and map the UCI to even-numbered (e.g., second, fourth, …) symbols ( symbol indexes 1, 3, …).

As shown in fig. 26, the UE may also map the DMRS to a symbol index L ═ 0, 2, …, 2 × (ceil (L/2) -1). The UE may also map UCI on the remaining symbols of the PUCCH (symbols to which DMRS is not mapped).

DMRS position 2-2

The UE may also map the DMRS and the UCI alternately in the time domain. The UE may also map the DMRS and UCI into the time domain by repeatedly using the existing (rel.15) DMRS location multiple times.

As shown in fig. 27, for PUCCH length L ≦ 14, the UE maps the DMRS to symbol index L ≦ 0, 2 …, 2 × (ceil (L/2) -1), for PUCCH length 14<L<28, the UE divides PUCCH of L symbol to have length L₁A first part of floor (L/2), and a first part having a length L₂Second part of ceil (L/2), for symbol index L in first part 0, 2, …, 2 × (ceil (L)₁/2) -1), and the symbol index L ═ L in the second part₂，L₂+2，…，2*(ceil(L₂/2) -1), DMRS is mapped. The UE may also map UCI on the remaining symbols of the PUCCH (symbols to which DMRS is not mapped).

For example, in the case where the PUCCH has a length of 20 symbols, the length of the first part is 10 symbols, and the length of the second part is 10 symbols. For example, in case that the PUCCH length is 27 symbols, the length of the first part is 13 symbols and the length of the second part is 14 symbols.

According to this embodiment, even when a slot longer than 14 symbols is used, the PUCCH can be appropriately transmitted.

< embodiment 7>

Each PF may also be based on sub-PRBs. The sub-PRBs may be replaced with sub-RBs, PRB portions, RB portions, and the like.

The sub-PRBs may be fewer than 12 subcarriers in the frequency domain. For example, the sub-PRB may be at least one of 2, 3, 6, and 9 subcarriers. Each PF may also use more than one sub-PRB.

The UE may map the PUCCH to more than one sub-PRB according to any one of the next mappings 1-1 and 1-2.

Mapping 1-1

The UE may map the PUCCH to consecutive subcarriers.

Mapping 1-2

The UE may also map the PUCCH to the scattered subcarriers using interleaving (interleaving).

For example, when the UE maps the PUCCH to 6 distributed subcarriers, the PUCCH may be mapped to subcarriers #0, #2, #4, # …, and # 10.

The UE may use any of the following sequences 1 and 2 for at least one of PF0 and PF 1. The UE may use any one of the following sequences 1 and 2 for at least one of PFa and PFb.

Sequence 1

The sequence length may also be the number of subcarriers of a sub-PRB. For example, a sub-PRB may have 6 subcarriers and the sequence length may also be 6.

Sequence 2

The sequence length may also be the number of subcarriers of a plurality of sub-PRBs. The UE may also map the PUCCH to the plurality of sub-PRBs. For example, the sequence length may be 12 or more than 12.

According to this embodiment, even when PUCCH is mapped using a unit different from PRB, PUCCH can be appropriately transmitted.

< embodiment 8>

The size of 1PRB may not be 12 subcarriers.

The UE may map the PUCCH to more than one PRB according to any of the next mappings 2-1 and 2-2.

Mapping 2-1

The UE may also map the PUCCH to multiple PRBs.

Mapping 2-2

The UE may also map the PUCCH to 1 PRB. The sequence length may also be the number of subcarriers of the PRB. The PRB may have 6 subcarriers and the sequence length may also be 6.

According to this embodiment, even when PUCCH is mapped using a unit smaller than 12 subcarriers, PUCCH can be appropriately transmitted.

(Wireless communication System)

Hereinafter, a configuration of a radio communication system according to an embodiment of the present disclosure will be described. In this radio communication system, communication is performed using one of the radio communication methods according to the above embodiments of the present disclosure or a combination thereof.

Fig. 28 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP), New wireless (5th Generation mobile communication system New Radio (5G NR)) of the fifth Generation mobile communication system, or the like.

In addition, the wireless communication system 1 may also support Dual Connectivity (Multi-RAT Dual Connectivity (MR-DC)) between a plurality of Radio Access Technologies (RATs). The MR-DC may include Dual connection of LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC))), Dual connection of NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC))), and the like.

In EN-DC, a base station (eNB) of LTE (E-UTRA) is a Master Node (MN), and a base station (gNB) of NR is a Slave Node (SN). In NE-DC, the base station of NR (gNB) is MN and the base station of LTE (E-UTRA) (eNB) is SN.

The wireless communication system 1 may also support Dual connection between a plurality of base stations within the same RAT (for example, Dual connection of base stations (gnbs) in which both MN and SN are NRs (NR-NR Dual Connectivity (NN-DC), NR-NR Dual connection)).

The wireless communication system 1 may include: a base station 11 forming a macro cell C1 having a relatively wide coverage area, and base stations 12(12a to 12C) arranged in the macro cell C1 and forming a small cell C2 narrower than the macro cell C1. The user terminal 20 may also be located in at least one cell. The arrangement, number, and the like of each cell and user terminal 20 are not limited to the embodiments shown in the figures. Hereinafter, base stations 11 and 12 will be collectively referred to as base station 10 without distinction.

The user terminal 20 may also be connected to at least one of the plurality of base stations 10. The user terminal 20 may use at least one of Carrier Aggregation (CA) and Dual Connectivity (DC) using a plurality of Component Carriers (CCs)).

Each CC may be included in at least one of the first Frequency band (Frequency Range 1(FR1)) or FR2) and the second Frequency band (FR2 or FR 4). The macro cell C1 may be contained in FR1 or FR2, and the small cell C2 may be contained in FR2 or FR 4.

The user terminal 20 may perform communication in each CC by using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

The plurality of base stations 10 may also be connected by wire (e.g., optical fiber based Common Public Radio Interface (CPRI)), X2 Interface, or the like) or wirelessly (e.g., NR communication). For example, when NR communication is used as a Backhaul between base stations 11 and 12, base station 11 corresponding to an upper station may be referred to as an Integrated Access Backhaul (IAB) host (donor) and base station 12 corresponding to a relay (relay) may be referred to as an IAB node.

The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The Core Network 30 may include at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN)), a Next Generation Core (NGC), and the like.

The user terminal 20 may be a terminal supporting at least one of communication schemes such as LTE, LTE-a, and 5G.

The radio communication system 1 may use a radio access scheme based on Orthogonal Frequency Division Multiplexing (OFDM). For example, in at least one of the downlink (dl)) and the uplink (ul)), Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used.

The radio access method may also be referred to as a waveform (waveform). In the radio communication system 1, other radio access schemes (for example, other single-carrier transmission schemes and other multi-carrier transmission schemes) may be applied to the UL and DL radio access schemes.

In the radio communication system 1, as the Downlink Channel, a Downlink Shared Channel (Physical Downlink Shared Channel (PDSCH))), a Broadcast Channel (Physical Broadcast Channel (PBCH))), a Downlink Control Channel (Physical Downlink Control Channel (PDCCH))) and the like that are Shared by the user terminals 20 may be used.

In the radio communication system 1, as the Uplink Channel, an Uplink Shared Channel (Physical Uplink Shared Channel (PUSCH))), an Uplink Control Channel (Physical Uplink Control Channel (PUCCH))), a Random Access Channel (Physical Random Access Channel (PRACH)), and the like, which are Shared by the user terminals 20, may be used.

User data, higher layer control Information, a System Information Block (SIB), and the like are transmitted through the PDSCH. User data, higher layer control information, etc. may also be transmitted over the PUSCH. In addition, a Master Information Block (MIB)) may also be transmitted through the PBCH.

The lower layer control information may also be transmitted through the PDCCH. The lower layer Control Information may include, for example, Downlink Control Information (DCI)) including scheduling Information of at least one of the PDSCH and the PUSCH.

The DCI scheduling PDSCH may be referred to as DL assignment, DL DCI, or the like, and the DCI scheduling PUSCH may be referred to as UL grant, UL DCI, or the like. The PDSCH may be interpreted as DL data, and the PUSCH may be interpreted as UL data.

For PDCCH detection, a COntrol REsource SET (countrol REsource SET (CORESET)) and a search space (search space) may be used. CORESET corresponds to searching for DCI resources. The search space corresponds to a search region and a search method of PDCCH candidates (PDCCH candidates). 1 CORESET may also be associated with 1 or more search spaces. The UE may also monitor the CORESET associated with a certain search space based on the search space settings.

One search space may also correspond to PDCCH candidates that conform to 1 or more aggregation levels (aggregation levels). The 1 or more search spaces may also be referred to as a set of search spaces. In addition, "search space", "search space set", "search space setting", "search space set setting", "CORESET setting", and the like of the present disclosure may be replaced with each other.

Uplink Control Information (UCI)) including at least one of Channel State Information (CSI), acknowledgement Information (for example, Hybrid Automatic Repeat reQuest (HARQ-ACK)), ACK/NACK, and Scheduling ReQuest (SR)) may be transmitted through the PUCCH. A random access preamble for establishing a connection with a cell may also be transmitted through the PRACH.

In addition, in the present disclosure, a downlink, an uplink, and the like may also be expressed without "link". Further, it can be said that "Physical (Physical)" is not attached to the head of each channel.

In the wireless communication system 1, a Synchronization Signal (SS), a Downlink Reference Signal (DL-RS), and the like may be transmitted. In the wireless communication system 1, the DL-RS may be a Cell-specific Reference Signal (CRS), a Channel State Information Reference Signal (CSI-RS), a DeModulation Reference Signal (DMRS), a Positioning Reference Signal (PRS), a Phase Tracking Reference Signal (PTRS), or the like.

The Synchronization Signal may be at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), for example. The signal blocks containing SS (PSS, SSs) and PBCH (and DMRS for PBCH) may also be referred to as SS/PBCH blocks, SS blocks (SSB), and the like. In addition, SS, SSB, etc. may also be referred to as reference signals.

In addition, in the wireless communication system 1, as an Uplink Reference Signal (UL-RS), a measurement Reference Signal (Sounding Reference Signal (SRS)), a demodulation Reference Signal (DMRS), or the like may be transmitted. The DMRS may also be referred to as a user terminal specific Reference Signal (UE-specific Reference Signal).

(base station)

Fig. 29 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transmitting/receiving unit 120, a transmitting/receiving antenna 130, and a transmission line interface (transmission line interface) 140. The control unit 110, the transmission/reception unit 120, the transmission/reception antenna 130, and the transmission line interface 140 may be provided in plural numbers.

In this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, but it is also conceivable that the base station 10 also has other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured by a controller, a control circuit, and the like described based on common knowledge in the technical field of the present disclosure.

The control unit 110 may also control generation of signals, scheduling (e.g., resource allocation, mapping), and the like. The control unit 110 may control transmission and reception, measurement, and the like using the transmission and reception unit 120, the transmission and reception antenna 130, and the transmission path interface 140. Control section 110 may generate data, control information, sequence (sequence), and the like to be transmitted as a signal, and forward the generated data, control information, sequence, and the like to transmission/reception section 120. The control unit 110 may perform call processing (setting, release, and the like) of a communication channel, state management of the base station 10, management of radio resources, and the like.

The transceiver 120 may also include a baseband (baseband) unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may also include a transmission processing unit 1211 and a reception processing unit 1212. The transmission/reception section 120 can be configured by a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measurement circuit, a transmission/reception circuit, and the like, which are described based on common knowledge in the technical field of the present disclosure.

The transmission/reception unit 120 may be configured as an integrated transmission/reception unit, or may be configured by a transmission unit and a reception unit. The transmission unit may be constituted by the transmission processing unit 1211 and the RF unit 122. The receiving unit may be configured by the reception processing unit 1212, the RF unit 122, and the measurement unit 123.

The transmitting/receiving antenna 130 can be configured by an antenna described based on common knowledge in the technical field of the present disclosure, for example, an array antenna.

The transmitting/receiving unit 120 may transmit the above-described downlink channel, synchronization signal, downlink reference signal, and the like. The transmission/reception unit 120 may receive the uplink channel, the uplink reference signal, and the like.

Transmit/receive section 120 may form at least one of a transmit beam and a receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), and the like.

For example, with respect to Data, Control information, and the like acquired from Control section 110, transmission/reception section 120 (transmission processing section 1211) may perform processing of a Packet Data Convergence Protocol (PDCP) layer, processing of a Radio Link Control (RLC) layer (e.g., RLC retransmission Control), processing of a Medium Access Control (MAC) layer (e.g., HARQ retransmission Control), and the like, and generate a bit string to be transmitted.

Transmission/reception section 120 (transmission processing section 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-analog conversion on a bit sequence to be transmitted, and output a baseband signal.

The transmission/reception unit 120(RF unit 122) may perform modulation, filtering, amplification, and the like on a baseband signal in a radio frequency band, and transmit a signal in the radio frequency band via the transmission/reception antenna 130.

On the other hand, the transmission/reception unit 120(RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, and the like on a signal in a radio frequency band received by the transmission/reception antenna 130.

Transmission/reception section 120 (reception processing section 1212) may acquire user data and the like by applying, to the acquired baseband signal, reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering processing, demapping, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing.

The transmission/reception unit 120 (measurement unit 123) may also perform measurement related to the received signal. For example, measurement section 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, and the like based on the received signal. Measurement section 123 may perform measurement of Received Power (e.g., Reference Signal Received Power (RSRP)), Received Quality (e.g., Reference Signal Received Quality (RSRQ)), Signal to Interference plus Noise Ratio (SINR)), Signal to Noise Ratio (SNR)), Signal Strength Indicator (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), and the like. The measurement results may also be output to the control unit 110.

The transmission path interface 140 may transmit and receive signals (backhaul signaling) to and from devices included in the core network 30, other base stations 10, and the like, or may acquire and transmit user data (user plane data) and control plane data and the like for the user terminal 20.

The transmitting unit and the receiving unit of the base station 10 in the present disclosure may be configured by at least one of the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission line interface 140.

Further, transmission/reception section 120 may transmit a reference signal (e.g., SSB, CSI-RS, etc.). Transmission/reception section 120 may also transmit information (MAC CE or DCI) indicating the TCI status for specific DL transmission. The TCI state may also represent at least one of a reference signal (e.g., SSB, CSI-RS, etc.), a QCL type, a cell transmitting the reference signal. The TCI state may also represent more than one reference signal. The one or more reference signals may include QCL type a reference signals and may also include QCL type D reference signals.

Control section 110 may assume that the first reference signal of the spatial relationship of the specific uplink transmission (for example, SRS, PUCCH, PUSCH, or the like) is a second reference signal (for example, SSB, CSI-RS) of QCL type D in the Transmission Control Indication (TCI) state of the specific downlink channel (for example, PDCCH, PDSCH, or the like) or quasi co-location (QCL) assumption.

(user terminal)

Fig. 30 is a diagram showing an example of the configuration of a user terminal according to an embodiment. The user terminal 20 includes a control unit 210, a transmission/reception unit 220, and a transmission/reception antenna 230. Further, the control unit 210, the transmission/reception unit 220, and the transmission/reception antenna 230 may be provided in one or more numbers.

In this example, the functional blocks of the characteristic parts in the present embodiment are mainly shown, but it is also conceivable that the user terminal 20 also has other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.

The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured by a controller, a control circuit, and the like described based on common knowledge in the technical field of the present disclosure.

The control unit 210 may also control the generation, mapping, etc. of the signals. Control section 210 may control transmission/reception, measurement, and the like using transmission/reception section 220 and transmission/reception antenna 230. Control section 210 may generate data, control information, a sequence, and the like to be transmitted as a signal, and forward the generated data, control information, sequence, and the like to transmission/reception section 220.

The transceiver unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband section 221 may include a transmission processing section 2211 and a reception processing section 2212. The transmitting/receiving section 220 can be configured by a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitting/receiving circuit, and the like, which are described based on common knowledge in the technical field of the present disclosure.

The transmission/reception unit 220 may be configured as an integrated transmission/reception unit, or may be configured by a transmission unit and a reception unit. The transmission section may be constituted by the transmission processing section 2211 and the RF section 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measuring unit 223.

The transmission/reception antenna 230 can be configured by an antenna described based on common knowledge in the technical field of the present disclosure, for example, an array antenna.

The transmitting/receiving unit 220 may receive the downlink channel, the synchronization signal, the downlink reference signal, and the like. The transmission/reception unit 220 may transmit the uplink channel, the uplink reference signal, and the like described above.

Transmit/receive section 220 may form at least one of a transmit beam and a receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), and the like.

For example, transmission/reception section 220 (transmission processing section 2211) may perform processing in the PDCP layer, processing in the RLC layer (for example, RLC retransmission control), processing in the MAC layer (for example, HARQ retransmission control), and the like on data, control information, and the like acquired from control section 210, and generate a bit sequence to be transmitted.

Transmission/reception section 220 (transmission processing section 2211) may perform transmission processing such as channel coding (including error correction coding as well), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on a bit sequence to be transmitted, and output a baseband signal.

Whether or not DFT processing is applied may be set based on transform precoding. For a certain channel (e.g., PUSCH), when transform precoding is active (enabled), transmission/reception section 220 (transmission processing section 2211) may perform DFT processing as the transmission processing in order to transmit the channel using a DFT-s-OFDM waveform, or otherwise, transmission/reception section 220 (transmission processing section 2211) may not perform DFT processing as the transmission processing.

The transmission/reception section 220(RF section 222) may perform modulation, filtering, amplification, and the like on the baseband signal in the radio frequency band, and transmit the signal in the radio frequency band via the transmission/reception antenna 230.

On the other hand, the transmission/reception unit 220(RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, and the like on a signal in a radio frequency band received by the transmission/reception antenna 230.

Transmission/reception section 220 (reception processing section 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering processing, demapping, demodulation, decoding (including error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, and acquire user data.

The transceiver unit 220 (measurement unit 223) may also perform measurements related to the received signal. For example, the measurement unit 223 may also perform RRM measurement, CSI measurement, and the like based on the received signal. Measurement unit 223 may also measure for received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), and the like. The measurement result may also be output to the control unit 210.

The transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting/receiving unit 220 and the transmitting/receiving antenna 230.

For transmission of a Physical Uplink Control Channel (PUCCH), control section 210 may determine a parameter related to at least one of a PUCCH format (e.g., any one of PFs 0 to 4 and PFa to c, a PUCCH resource set according to embodiment 5), a sequence for the PUCCH (e.g., any one of the sequences according to embodiments 1 to 3), a time domain position of a demodulation reference signal (DMRS) for the PUCCH (e.g., any one of the DMRS positions according to embodiment 6), a length of the PUCCH (e.g., a PUCCH length longer than 14 symbols), and a bandwidth of the PUCCH (e.g., a PRB, a sub-PRB, and a bandwidth smaller than 12 subcarriers). The transmission/reception unit 220 may also transmit Uplink Control Information (UCI) on the PUCCH. The parameters in the second frequency range (e.g. FR4, FR2, etc.) higher than the first frequency range (e.g. FR2, FR1, etc.) may also be different from the parameters in the first frequency range.

The length of the sequence may also be longer than 12. The transmission unit 220 may transmit at least one of a signal obtained by cyclic shift of the sequence and a signal obtained by multiplying the sequence by the DMRS and the UCI (embodiments 1 to 3).

The transmission unit 220 may transmit a signal obtained by Time Division Multiplexing (TDM) of a signal based on the sequence and a signal based on the UCI on the PUCCH (embodiment 3).

The length of the PUCCH may be longer than 14 symbols. The control unit 210 may determine the time domain position based on the length of the PUCCH (embodiment 6).

The PUCCH may be mapped to at least one of a slot longer than 14 symbols and a resource block narrower than 12 subcarriers (embodiments 7 and 8).

(hardware construction)

The block diagram used in the description of the above embodiment shows blocks in functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. The method of implementing each functional block is not particularly limited. That is, each functional block may be implemented by one apparatus that is physically or logically combined, or may be implemented by a plurality of apparatuses that are directly or indirectly (for example, by wire or wireless) connected to two or more apparatuses that are physically or logically separated. The functional blocks may also be implemented by combining the above-described apparatus or apparatuses with software.

Here, the functions include judgment, determination, judgment, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, establishment, comparison, assumption, expectation, view, broadcast (broadcasting), notification (notification), communication (communicating), forwarding (forwarding), configuration (setting), reconfiguration (resetting), allocation (allocating, mapping), assignment (assigning), and the like, but are not limited to these. For example, a function block (a configuration unit) that realizes a transmission function may also be referred to as a transmission unit (transmitting unit), a transmitter (transmitter), or the like. Any of these methods is not particularly limited, as described above.

For example, the base station, the user terminal, and the like in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 10 is a diagram showing an example of hardware configurations of a base station and a user terminal according to an embodiment. The base station 10 and the user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

In addition, in the present disclosure, terms such as device, circuit, apparatus, section (section), unit, and the like can be substituted for each other. The hardware configurations of the base station 10 and the user terminal 20 may include one or more of the respective devices shown in the drawings, or may not include some of the devices.

For example, only one processor 1001 is illustrated, but there may be multiple processors. The processing may be executed by one processor, or may be executed by two or more processors simultaneously, sequentially, or by another method. Further, the processor 1001 may be implemented by one or more chips.

Each function of the base station 10 and the user terminal 20 is realized by, for example, reading specific software (program) into hardware such as the processor 1001 and the memory 1002, performing an operation by the processor 1001 to control communication via the communication device 1004, or controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.

The processor 1001 controls the entire computer by operating an operating system, for example. The processor 1001 may be configured by a Central Processing Unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, at least a part of the control unit 110(210), the transmitting and receiving unit 120(220), and the like may be implemented by the processor 1001.

Further, the processor 1001 reads out a program (program code), a software module, data, and the like from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiments can be used. For example, the control unit 110(210) may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and may be similarly realized for other functional blocks.

The Memory 1002 may be a computer-readable recording medium, and may be formed of at least one of a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM)), a Random Access Memory (RAM), or another suitable storage medium. The memory 1002 may also be referred to as a register, cache, main memory (primary storage), or the like. The memory 1002 can store a program (program code), a software module, and the like that are executable to implement the wireless communication method according to one embodiment of the present disclosure.

The storage 1003 may be a computer-readable recording medium, and may be, for example, at least one of a flexible disk (flexible Disc), a Floppy (registered trademark) disk, an optical disk (e.g., a Compact Disc read only memory (CD-ROM)) or the like), a digital versatile Disc (dvd), a Blu-ray (registered trademark) disk, a removable disk (removable Disc), a hard disk drive, a smart card (smart card), a flash memory device (e.g., a card (card), a stick (stick), a key drive), a magnetic stripe (stripe), a database, a server, or another suitable storage medium.

The communication device 1004 is hardware (transmission/reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, or the like. Communication apparatus 1004 may be configured to include a high-Frequency switch, a duplexer, a filter, a Frequency synthesizer, and the like, in order to realize at least one of Frequency Division Duplexing (FDD) and Time Division Duplexing (TDD), for example. For example, the transmitting/receiving unit 120(220), the transmitting/receiving antenna 130(230), and the like described above may be implemented by the communication device 1004. The transmitting/receiving unit 120(220) may be physically or logically separately installed from the transmitting unit 120a (220a) and the receiving unit 120b (220 b).

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, and the like) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, a Light Emitting Diode (LED) lamp, or the like) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

Further, the processor 1001, the memory 1002, and other devices are connected by a bus 1007 for communicating information. The bus 1007 may be formed by a single bus, or may be formed by different buses between the respective devices.

The base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), or the like, and a part or all of the functional blocks may be implemented by the hardware. For example, the processor 1001 may also be implemented with at least one of these hardware.

(modification example)

In addition, terms described in the present disclosure and terms required for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, channels, symbols, and signals (signals or signaling) may be substituted for one another. Further, the signal may also be a message. The Reference Signal (Reference Signal) may also be referred to as RS for short, and may also be referred to as Pilot (Pilot), Pilot Signal, etc. depending on the applied standard. Further, Component Carriers (CCs) may also be referred to as cells, frequency carriers, Carrier frequencies, and the like.

A radio frame may also be made up of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting the radio frame may also be referred to as a subframe. Further, a subframe may also be composed of one or more slots in the time domain. The subframe may also be a fixed time length (e.g., 1ms) independent of a parameter set (numerology).

Here, the parameter set may also refer to a communication parameter applied in at least one of transmission and reception of a certain signal or channel. For example, the parameter set may indicate at least one of SubCarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), the number of symbols per TTI, radio frame structure, specific filtering processing performed by the transceiver in the frequency domain, specific windowing processing performed by the transceiver in the Time domain, and the like.

The time slot may be formed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM)) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, or the like) in the time domain. Further, the time slot may also be a time unit based on a parameter set.

A timeslot may also contain multiple mini-slots. Each mini-slot may also be made up of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be made up of a fewer number of symbols than a slot. PDSCH (or PUSCH) transmitted in a time unit larger than a mini slot may also be referred to as PDSCH (PUSCH) mapping type a. PDSCH (or PUSCH) transmitted using mini-slots may also be referred to as PDSCH (PUSCH) mapping type B.

The radio frame, subframe, slot, mini-slot, and symbol all represent a unit of time when a signal is transmitted. The radio frame, subframe, slot, mini-slot, and symbol may also use other names corresponding to each. In addition, time units such as frames, subframes, slots, mini-slots, symbols, etc. in the present disclosure may be replaced with one another.

For example, one subframe may also be referred to as TTI, a plurality of consecutive subframes may also be referred to as TTI, and one slot or one mini-slot may also be referred to as TTI. That is, at least one of the subframe and TTI may be a subframe (1ms) in the conventional LTE, may be a period shorter than 1ms (for example, 1 to 13 symbols), or may be a period longer than 1 ms. The unit indicating TTI may be referred to as a slot, a mini slot, or the like, instead of a subframe.

Here, the TTI refers to, for example, the minimum time unit of scheduling in wireless communication. For example, in the LTE system, the base station performs scheduling for allocating radio resources (such as a frequency bandwidth and transmission power usable by each user terminal) to each user terminal in TTI units. In addition, the definition of TTI is not limited thereto.

The TTI may be a transmission time unit of a channel-coded data packet (transport block), code block, code word, or the like, or may be a processing unit of scheduling, link adaptation, or the like. In addition, when a TTI is given, a time interval (e.g., the number of symbols) to which a transport block, a code block, a codeword, or the like is actually mapped may be shorter than the TTI.

When one slot or one mini-slot is referred to as a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may be the minimum time unit for scheduling. The number of slots (the number of mini-slots) constituting the minimum time unit of the schedule may be controlled.

The TTI having a time length of 1ms may also be referred to as a normal TTI (TTI in 3GPP Rel.8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI, a shortened subframe, a short subframe, a mini-slot, a sub-slot, a slot, etc.

In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length exceeding 1ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length smaller than the long TTI and equal to or longer than 1 ms.

A Resource Block (RB) is a Resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may be the same regardless of the parameter set, and may be 12, for example. The number of subcarriers included in the RB may also be decided based on the parameter set.

In addition, an RB may include one or more symbols in the time domain, and may have a length of one slot, one mini-slot, one subframe, or one TTI. One TTI, one subframe, and the like may be formed of one or more resource blocks.

In addition, one or more RBs may also be referred to as a Physical Resource Block (PRB), a subcarrier Group (SCG), a Resource Element Group (REG), a PRB pair, an RB pair, and the like.

Furthermore, a Resource block may also be composed of one or more Resource Elements (REs). For example, one RE may also be a radio resource region of one subcarrier and one symbol.

The Bandwidth Part (BWP) (which may be referred to as a partial Bandwidth) may also indicate a subset of consecutive common RBs (common resource blocks) for a certain parameter set in a certain carrier. Here, the common RB may also be determined by an index of an RB with reference to a common reference point of the carrier. PRBs may also be defined in a certain BWP and are numbered additionally within the BWP.

The BWP may include UL BWP (UL BWP) and DL BWP (DL BWP). One or more BWPs may also be set within 1 carrier for the UE.

At least one of the set BWPs may be active, and the UE may not expect to transmit and receive a specific signal/channel other than the active BWP. In addition, "cell", "carrier", and the like in the present disclosure may also be interpreted as "BWP".

The above-described configurations of radio frames, subframes, slots, mini slots, symbols, and the like are merely examples. For example, the structure of the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the Cyclic Prefix (CP) length, and the like can be variously changed.

The information, parameters, and the like described in the present disclosure may be expressed as absolute values, relative values to specific values, or other corresponding information. For example, the radio resource may also be indicated by a specific index.

In the present disclosure, the names used for the parameters and the like are not limitative names in all aspects. Further, the mathematical expressions and the like using these parameters may also be different from those explicitly disclosed in the present disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and thus, the various names assigned to these various channels and information elements are not limitative names in all aspects.

Information, signals, and the like described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, and the like that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

Information, signals, and the like can be output to at least one of a higher layer (upper layer) to a lower layer (lower layer) and a lower layer to a higher layer. Information, signals, and the like may be input and output via a plurality of network nodes.

The input/output information, signals, and the like may be stored in a specific location (for example, a memory) or may be managed by a management table. The input/output information, signals, and the like may be overwritten, updated, or appended. The output information, signals, etc. may also be deleted. The input information, signals, etc. may also be transmitted to other devices.

The information notification is not limited to the embodiment and embodiment described in the present disclosure, and may be performed by other methods. For example, the Information notification in the present disclosure may be implemented by physical layer signaling (e.g., Downlink Control Information (DCI)), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC)) signaling, broadcast Information (Master Information Block (MIB)), System Information Block (SIB)), or the like), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

The physical Layer signaling may also be referred to as Layer 1/Layer 2(L1/L2)) control information (L1/L2 control signal), L1 control information (L1 control signal), and the like. The RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup (RRC Connection Setup) message, an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message, or the like. The MAC signaling may be notified using a MAC Control Element (CE), for example.

Note that the notification of the specific information (for example, the notification of "X") is not limited to an explicit notification, and may be performed implicitly (for example, by not performing the notification of the specific information or by performing the notification of other information).

The decision may be made by a value (0 or 1) represented by one bit, by a true-false value (boolean) represented by true (true) or false (false), or by a comparison of values (e.g., with a specific value).

Software, whether referred to as software (software), firmware (firmware), middleware-ware (middle-ware), microcode (micro-code), hardware description language, or by other names, should be broadly construed to mean instructions, instruction sets, code (code), code segments (code segments), program code (program code), programs (program), subroutines (sub-program), software modules (software module), applications (application), software applications (software application), software packages (software packages), routines (routine), subroutines (sub-routine), objects (object), executables, threads of execution, processes, functions, or the like.

Software, instructions, information, and the like may also be transmitted or received via a transmission medium. For example, where the software is transmitted from a website, server, or other remote source (remote source) using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of transmission medium.

The terms "system" and "network" as used in this disclosure can be used interchangeably. "network" may also mean a device (e.g., a base station) included in a network.

In the present disclosure, terms such as "precoding", "precoder", "weight", "Quasi-Co-location (qcl)", "Transmission Configuration Indication state (TCI state)", "spatial relationship (spatial relationship)", "spatial filter (spatial domain filter)", "Transmission power", "phase rotation", "antenna port group", "layer", "rank", "resource set", "resource group", "beam width", "beam angle", "antenna element", "panel", and the like can be used interchangeably.

In the present disclosure, terms such as "Base Station (BS)", "wireless Base Station", "fixed Station (fixed Station)", "NodeB", "enb (enodeb)", "gnb (gtnodeb)", "access point (access point)", "Transmission Point (TP)", "Reception Point (RP)", "Transmission Reception Point (TRP)", "panel", "cell", "sector", "cell group", "carrier", "component carrier" can be used interchangeably. There are also cases where a base station is referred to by terms such as macrocell, smallcell, femtocell, picocell, and the like.

The base station can accommodate one or more (e.g., three) cells. When a base station accommodates a plurality of cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each smaller area can also provide communication services through a base station subsystem (e.g., a Remote Radio Head (RRH)) for indoor use. The term "cell" or "sector" refers to a portion or the entirety of the coverage area of at least one of a base station and a base station subsystem that is in communication service within the coverage area.

In the present disclosure, terms such as "Mobile Station (MS)", "User terminal (User terminal)", "User Equipment (UE))", "terminal" and the like are used interchangeably.

In some instances, a mobile station is also referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset (hand set), user agent, mobile client, or some other suitable terminology.

At least one of the base station and the mobile station may also be referred to as a transmitting apparatus, a receiving apparatus, a wireless communication apparatus, and the like. At least one of the base station and the mobile station may be a device mounted on a mobile body, a mobile body main body, or the like. The mobile body may be a vehicle (e.g., a vehicle, an airplane, etc.), may be a mobile body that moves in an unmanned manner (e.g., a drone (a drone), an autonomous vehicle, etc.), or may be a robot (manned or unmanned). At least one of the base station and the mobile station further includes a device that does not necessarily move when performing a communication operation. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

In addition, the base station in the present disclosure may also be interpreted as a user terminal. For example, the various aspects/embodiments of the present disclosure may also be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between a plurality of user terminals (e.g., may also be referred to as Device-to-Device (D2D)), Vehicle networking (V2X), etc.). In this case, the user terminal 20 may have the functions of the base station 10 described above. The expressions such as "uplink" and "downlink" can also be interpreted as expressions (for example, "side") corresponding to communication between terminals. For example, an uplink channel, a downlink channel, and the like may also be interpreted as a side channel.

Likewise, a user terminal in the present disclosure may also be interpreted as a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

In the present disclosure, the operation performed by the base station is sometimes performed by an upper node (upper node) of the base station, depending on the case. Obviously, in a network including one or more network nodes (network nodes) having a base station, various actions performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (for example, considering a Mobility Management Entity (MME), a Serving-Gateway (S-GW), and the like, but not limited thereto), or a combination thereof.

The embodiments and modes described in the present disclosure may be used alone, may be used in combination, or may be switched to use with execution. Note that, in the embodiments and the embodiments described in the present disclosure, the order of the processes, sequences, flowcharts, and the like may be changed as long as they are not contradictory. For example, elements of various steps are presented in an exemplary order for a method described in the present disclosure, but the present invention is not limited to the specific order presented.

The aspects/embodiments described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-a), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, fourth generation Mobile communication System (4 generation communication System (4G)), fifth generation Mobile communication System (5G)), Future Radio Access (FRA), New Radio Access Technology (RAT)), New Radio (New Radio trademark (NR)), New Radio Access (NX)), New Radio Access (Future Radio Access), FX), Global Broadband communication System (Global System for Mobile communication (GSM)), and Mobile Broadband communication System (CDMA) (2000 Mobile communication System)), (CDMA, etc.) IEEE 802.11(Wi-Fi (registered trademark)), IEEE 802.16(WiMAX (registered trademark)), IEEE 802.20, Ultra-wideband (uwb), Bluetooth (registered trademark), a system using another appropriate wireless communication method, a next generation system expanded based on these, and the like. Furthermore, multiple systems may also be applied in combination (e.g., LTE or LTE-a, combination with 5G, etc.).

The term "based on" used in the present disclosure does not mean "based only" unless otherwise specified. In other words, the expression "based on" means both "based only on" and "based at least on".

Any reference to the use of the terms "first," "second," etc. in this disclosure does not fully define the amount or order of such elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, reference to first and second elements does not imply that only two elements may be used or that the first element must somehow override the second element.

The term "determining" as used in this disclosure encompasses a wide variety of actions in some cases. For example, the "determination (decision)" may be regarded as a case of "determination (decision)" such as judgment (rounding), calculation (calculating), processing (processing), derivation (deriving), investigation (investigating), search (looking up), search, inquiry (querying)) (for example, search in a table, a database, or another data structure), confirmation (authenticating), and the like.

The "determination (decision)" may be a case where reception (e.g., reception information), transmission (e.g., transmission information), input (input), output (output), access (e.g., access to data in a memory), and the like are regarded as "determination (decision)".

The "judgment (decision)" may be a case where the solution (solving), selection (selecting), selection (smoothening), establishment (establishing), comparison (comparing), or the like is regarded as the "judgment (decision)". That is, "judgment (decision)" may also consider some actions as a case of "judgment (decision)".

The term "determination (decision)" may be interpreted as "assumption", "expectation", "consideration", and the like.

The terms "connected" and "coupled" or any variation thereof used in the present disclosure mean all connections or couplings between two or more elements directly or indirectly, and can include a case where one or more intermediate elements exist between two elements "connected" or "coupled" to each other. The combination or connection between the elements may be physical, logical, or a combination of these. For example, "connection" may also be interpreted as "access".

In the present disclosure, where two elements are connected, it can be considered to be "connected" or "joined" to each other using more than one wire, cable, printed electrical connection, etc., and using electromagnetic energy having a wavelength in the radio frequency domain, the microwave region, the optical (both visible and invisible) region, etc., as several non-limiting and non-inclusive examples.

In the present disclosure, the term "a is different from B" may mean "a and B are different from each other". In addition, the term may also mean "a and B are different from C, respectively". The terms "separate", "associated", and the like may likewise be construed as "different".

In the present disclosure, when the terms "including", and "variations thereof are used, these terms are intended to have inclusive meanings as in the term" comprising ". Further, the term "or" used in the present disclosure does not mean exclusive or.

In the present disclosure, for example, in the case where articles are added by translation as in a, an, and the in english, the present disclosure may also include the case where nouns following these articles are plural.

Although the invention according to the present disclosure has been described in detail above, it will be apparent to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the invention defined by the claims. Therefore, the description of the present disclosure is for illustrative purposes and does not have any limiting meaning to the invention to which the present disclosure relates.

Claims (6)

1. A terminal, having:

a control unit configured to determine a parameter related to at least one of a PUCCH format, a sequence for the PUCCH, a time domain position of a demodulation reference signal (DMRS) for the PUCCH, a length of the PUCCH, and a bandwidth of the PUCCH, for transmission of a Physical Uplink Control Channel (PUCCH); and

a transmitting unit which transmits Uplink Control Information (UCI) on the PUCCH,

the parameters in a second frequency range higher than the first frequency range are different from the parameters in the first frequency range.

2. The terminal of claim 1, wherein,

the length of the sequence is longer than 12,

the transmission unit transmits at least one of a signal obtained by cyclic shift of the sequence and a signal obtained by multiplying the sequence by the DMRS and the UCI.

3. The terminal of claim 1 or 2,

the transmission unit transmits a signal obtained by Time Division Multiplexing (TDM) of a signal based on the sequence and a signal based on the UCI on the PUCCH.

4. The terminal of claim 1 or 2,

the length of the PUCCH is longer than 14 symbols,

the control unit decides the time domain position based on a length of the PUCCH.

5. The terminal of any of claims 1-4,

the PUCCH is mapped to at least one of a slot longer than 14 symbols and a resource block narrower than 12 subcarriers.

6. A wireless communication method for a terminal, comprising:

determining a parameter related to at least one of a PUCCH format, a sequence for the PUCCH, a time domain position of a demodulation reference signal (DMRS) for the PUCCH, a length of the PUCCH, and a bandwidth of the PUCCH, for transmission of a Physical Uplink Control Channel (PUCCH); and

a step of transmitting Uplink Control Information (UCI) on the PUCCH,

the parameters in a second frequency range higher than the first frequency range are different from the parameters in the first frequency range.

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