Terminal, wireless communication method, base station, and system

Abstract

A terminal according to one embodiment of the present disclosure includes: a control unit that determines parameters related to at least one of a physical uplink control channel (PUCCH) format, a sequence used for the PUCCH, a time-domain position of a demodulation reference signal (DMRS) used for the PUCCH, a length of the PUCCH, and a bandwidth of the PUCCH for transmission of the PUCCH; and a transmitting unit that transmits uplink control information (UCI) on the PUCCH, wherein the parameters in a second frequency range higher than the first frequency range are different from the parameters in the first frequency range. According to one embodiment of the present disclosure, communication can be performed appropriately even when using a high frequency band.

Description

Technical Field

[0001] The present disclosure relates to a terminal, a wireless communication method, a base station, and a system in a next-generation mobile communication system. Background Art

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been standardized to achieve even higher data rates and lower latency (Non-Patent Document 1). Furthermore, LTE-Advanced (3GPP Rel. 10-14) has been standardized to further enhance the capacity and sophistication of LTE (Third Generation Partnership Project (3GPP) Releases (Rel.) 8 and 9).

[0003] Successor systems to LTE (for example, also referred to as fifth-generation mobile communication system (5G), 5G+ (plus), New Radio (NR), 3GPP Rel. 15 and later, etc.) are also under study.

[0004] Prior art literature

[0005] Non-patent literature

[0006] Non-Patent Document 1: 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the Invention

[0007] Problems to be solved by the invention

[0008] In future wireless communication systems (eg, NR after Rel. 16), use of frequency bands or frequency ranges (FR) higher than specific frequencies (eg, 7.125 GHz, 24.25 GHz, 52.6 GHz, etc.) is being studied.

[0009] In a frequency band higher than a specific frequency, it is assumed that phase noise increases and the Peak-to-Average Power Ratio (PAPR) has higher sensitivity.

[0010] However, how to perform communication control at frequencies higher than a specific frequency (for example, channel design, etc.) has not yet been fully studied.

[0011] Therefore, one of the objects of the present disclosure is to provide a terminal and a wireless communication method that can appropriately perform communication even when using a high frequency band.

[0012] Means for solving problems

[0013] A terminal in one embodiment of the present invention includes: a control unit, which determines parameters related to at least one of the PUCCH format, the sequence used for the PUCCH, the time domain position of the demodulation reference signal (DMRS) used for the PUCCH, the length of the PUCCH, and the bandwidth of the PUCCH for sending a physical uplink control channel (PUCCH); and a sending unit, which sends uplink control information (UCI) on the PUCCH, and the parameters in a second frequency range higher than the first frequency range are different from the parameters in the first frequency range.

[0014] Effects of the Invention

[0015] According to one aspect of the present disclosure, communication can be performed appropriately even when a high frequency band is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram showing an example of FR.

[0017] Figure 2 This is a diagram showing an example of symbol time length corresponding to the subcarrier spacing.

[0018] Figures 3A to 3E This is a diagram showing an example of the PUCCH format in Rel.15NR.

[0019] Figure 4 This is a diagram showing an example of UCI transmission using PF0.

[0020] Figure 5A as well as Figure 5B This is a diagram showing an example of a cyclic shift index for PF0.

[0021] Figure 6 This is a diagram showing an example of UCI transmission using PF1.

[0022] Figure 7 This is a diagram showing an example of mapping of PF2.

[0023] Figure 8 This is a diagram showing an example of PFa1.

[0024] Figure 9 This is a diagram showing an example of PFb1.

[0025] Figure 10 This is a diagram showing an example of PFa2.

[0026] Figure 11 This is a diagram showing an example of PFb2.

[0027] Figure 12 This is a diagram showing an example of PFa3.

[0028] Figure 13 This is a diagram showing an example of PFb3.

[0029] Figure 14 This is a diagram showing an example of a sequence set used in PF0 and PF1.

[0030] Figure 15 This is a diagram showing an example of PFc1.

[0031] Figure 16 This is a diagram showing an example of UCI transmission using PFc2.

[0032] Figure 17 This is a diagram showing an example of PFc3.

[0033] Figure 18 This is a diagram showing an example of a new slot and a new PRB.

[0034] Figure 19 This is a diagram showing an example of a table showing DMRS positions.

[0035] Figure 20 This is a diagram showing an example of DMRS positions.

[0036] Figure 21 This is a diagram showing another example of a table showing DMRS positions.

[0037] Figure 22 This is a diagram showing another example of DMRS positions (without additional DMRS).

[0038] Figure 23 This is a diagram showing another example of DMRS positions (with additional DMRS).

[0039] Figure 24 This is a diagram showing an example of a table of existing DMRS positions.

[0040] Figure 25 This is a diagram showing an example of DMRS positions based on an existing DMRS position table.

[0041] Figure 26 This is a diagram showing an example of a method for determining a DMRS position.

[0042] Figure 27 This is a diagram showing another example of a method for determining a DMRS position.

[0043] Figure 28 This is a diagram showing an example of a schematic configuration of a wireless communication system according to one embodiment.

[0044] Figure 29 This is a diagram showing an example of the configuration of a base station according to one embodiment.

[0045] Figure 30 This is a diagram showing an example of the configuration of a user terminal according to one embodiment.

[0046] Figure 31 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to one embodiment. DETAILED DESCRIPTION

[0047] (FR)

[0048] In NR, the use of frequency bands up to 52.6 GHz (up to 52.6 GHz) is under study. In NR versions after Rel. 16, the use of frequency bands higher than 52.6 GHz (above 52.6 GHz) is under study. A frequency band may also be referred to as a frequency range (FR).

[0049] Figure 1 is a diagram showing an example of FR. Figure 1 As shown, the target FR (FRx (x is an arbitrary character string)) is, for example, from 52.6 GHz to 114.25 GHz. Furthermore, as the frequency range in NR, FR1 is 410 MHz to 7.152 GHz, and FR2 is 24.25 GHz to 52.6 GHz.

[0050] In frequency bands higher than 52.6 GHz, phase noise and propagation loss are expected to increase. Furthermore, it is expected that at least one of the peak-to-average power ratio (PAPR) and non-linear PA sensitivity will be higher.

[0051] At least one of a large (wide) subcarrier spacing (SCS) (ie, a small number of FFT points), a single carrier waveform, a structure for reducing PAPR in a large SCS, and a narrow beam (ie, a large number of beams) is required.

[0052] Taking the above into consideration, a structure with a wider SCS (for example, at least one of CP-OFDM and DFT-s-OFDM) may be considered in a frequency band higher than 52.6 GHz (or a waveform for use above 52.6 GHz).

[0053] Figure 2 This is a diagram showing an example of the symbol time length in each SCS. Figure 2 In the example, 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz, and 960kHz are listed as subcarrier spacings, but other subcarrier spacings may also be specified. Figure 2 The numerical values ​​shown are examples and are not limiting.

[0054] In the case of a normal cyclic prefix (NCP), one slot consists of 14 symbols, and in the case of an extended cyclic prefix (ECP), one slot consists of 12 symbols. Of course, the number of symbols constituting a slot is not limited to this.

[0055] The waveform at high frequencies can use CP-OFDM or DFT-S-OFDM with a large SCS. While maintaining the number of symbols within a slot independently of the SCS, a larger SCS results in a shorter symbol or cyclic prefix (CP) duration. To maximize coverage and power amplification efficiency, a DL control channel structure that supports low PAPR is preferred.

[0056] (PUCCH format)

[0057] In future wireless communication systems (e.g., Rel.15 and later, 5G, NR, etc.), the structure (also called format, PUCCH format (PF), etc.) of the uplink control channel (e.g., PUCCH) used to transmit uplink control information (UCI) is being studied. For example, in Rel.15NR, Figures 3A to 3E As shown in Figure 1, support for five types of PFs, PF0 to PF4, is currently under consideration. The names of the PFs shown below are merely examples, and different names may be used.

[0058] For example, PF0 and PF1 are PFs used in the transmission of UCI of less than 2 bits (up to 2 bits). For example, UCI may also be at least one of delivery confirmation information (also known as Hybrid Automatic Repeat reQuest-Acknowledgement (HARQ-ACK)), acknowledgement (ACK) or negative-acknowledgement (NACK), etc.), and scheduling request (SR). PF0 can be allocated to 1 or 2 code elements, so it is also called short PUCCH or sequence-based short PUCCH, etc. On the other hand, PF1 can be allocated to 4-14 code elements, so it is also called long PUCCH, etc. PF0 can also use a cyclic shift (CS) corresponding to the value of UCI to transmit a sequence obtained by cyclic shift of the base sequence. In PF1, multiple user terminals can be code-division multiplexed (CDM) within the same physical resource block (PRB) using time-domain block spreading using at least one of CS and time-domain (TD) orthogonal cover code (OCC). PF0 and PF1 can also be mapped to one PRB.

[0059] PF2-4 is the PF used for transmitting UCI of more than 2 bits (for example, Channel State Information (CSI)), or at least one of CSI, HARQ-ACK, and SR). PF2 can be allocated to 1 or 2 codewords, so it is also called short PUCCH, etc. On the other hand, PF3 and PF4 can be allocated to 4-14 codewords, so they are also called long PUCCH, etc. In PF4, block spreading before DFT (frequency domain (FD)-OCC) can also be used, and multiple user terminals are CDMed. PF2 and PF3 can be mapped to 1 to 16 PRBs. PF4 can also be mapped to 1 PRB.

[0060] Intra-slot frequency hopping can also be applied to PF1, PF3, and PF4. symb , then the length before frequency hopping (first hop) can be floor(N symb / 2), the length after frequency hopping (second hop) can be ceil(N symb / 2).

[0061] The waveforms of PF0, PF1, and PF2 may also be cyclic prefix (CP)-orthogonal frequency division multiplexing (OFDM). The waveforms of PF3 and PF4 may also be discrete Fourier transform (DFT)-spread(s)-OFDM.

[0062] The resources (e.g., PUCCH resources) used in transmitting the uplink control channel are allocated using higher-layer signaling and / or downlink control information (DCI). Here, higher-layer signaling may include, for example, RRC (Radio Resource Control) signaling, system information (e.g., at least one of Remaining Minimum System Information (RMSI), Other System Information (OSI), Master Information Block (MIB), and System Information Block (SIB)), and broadcast information (Physical Broadcast Channel (PBCH)).

[0063] Specifically, one or more sets (PUCCH resource sets) each containing one or more PUCCH resources are notified (configured) to the user terminal via higher layer signaling. For example, a radio base station may notify the user terminal of K (e.g., 1 ≤ K ≤ 4) PUCCH resource sets. Each PUCCH resource set may also contain M (e.g., 1 ≤ M ≤ 32) PUCCH resources.

[0064] The user terminal may also determine a single PUCCH resource set (a first PUCCH resource set) from the configured K PUCCH resource sets based on the UCI payload size (UCI payload size, number of UCI information bits). The UCI payload size may also be the number of UCI bits excluding cyclic redundancy check (CRC) bits.

[0065] The user terminal may also determine the PUCCH resource to be used for UCI transmission from the M PUCCH resources included in the determined PUCCH resource set based on at least one of the DCI and implicit information (implicit indication information or implicit index, etc.). For example, the implicit indication information may be the starting CCE index of the received PDCCH carrying the DCI.

[0066] Each PUCCH resource configured for a user terminal may include the value of at least one of the following parameters (also referred to as a field or information). In addition, a range of values ​​that can be taken for each PUCCH format may be specified for each parameter.

[0067] The symbol that starts PUCCH allocation (start symbol)

[0068] The number of symbols allocated to the PUCCH in a slot (the duration allocated to the PUCCH)

[0069] The index of the resource block (Physical Resource Block (PRB)) where PUCCH allocation starts

[0070] The number of PRBs allocated to PUCCH

[0071] Whether to enable frequency hopping for PUCCH

[0072] The frequency resource of the second hop when frequency hopping is enabled, and the index of the initial cyclic shift (CS)

[0073] The index of the orthogonal spreading code (e.g., OCC) in the time domain, and the length of the OCC used for block spreading before discrete Fourier transform (DFT) (also called OCC length, spreading factor, etc.)

[0074] The index of the OCC used in block-wise spreading after DFT

[0075] PF0 or PF1 use sequence.

[0076] like Figure 4 As shown, PF0 uses α corresponding to the value of the initial cyclic shift A and UCI (at least one of HARQ-ACK and SR). x The cyclic shift (phase rotation) of the 12-bit reference sequence X0, ..., X 11The sequence obtained by cyclic shifting is mapped to 1PRB. The initial cyclic shift A can also be set through high-level signaling. For example, Figure 5A As shown, the cyclic shift α corresponding to 1-bit HARQ-ACK information {0, 1} x The index x is 0, 6 respectively. For example, Figure 5B As shown, the cyclic shift α corresponding to the 2-bit HARQ-ACK information {00, 01, 11, 10} x The indices x are 0, 3, 6, and 9 respectively.

[0077] like Figure 6 As shown, PF1 maps signals obtained by multiplying modulated and channel-coded UCI symbols and DMRS symbols by a 12-bit reference sequence and a sequence based on cyclic shift and TD-OCC, respectively, to 1 PRB.

[0078] In addition, in the present disclosure, the sequence is mapped in the direction of increasing frequency, but the sequence may be mapped in the direction of decreasing frequency.

[0079] Rel. 15 defines a constant amplitude zero auto-correlation (CAZAC) sequence as a low Peak to Average Power Ratio (PAPR) sequence for lengths greater than 36. For lengths shorter than 36, a computer-generated sequence (CGS) that takes PAPR and cross-correlation into account is defined. A CAZAC sequence with a prime length achieves an ideal PAPR (i.e., PAPR = 1); otherwise, the PAPR degrades.

[0080] It is preferable to reduce PAPR at high frequencies.

[0081] In PF2 (short PUCCH) of Rel.15NR, as Figure 7 As shown, DMRS and UCI are orthogonal frequency division multiplexing (FDM). DMRS can also be mapped to one subcarrier for every three subcarriers. UCI can be mapped to the remaining subcarriers. The waveform of PF2 is CP-OFDM. Therefore, the PAPR of PF2 becomes higher, and performance degrades at high frequencies.

[0082] It is not clear whether all PFs are supported at frequencies higher than a certain frequency. PFs are not suitable at high frequencies.

[0083] In Rel. 15, the maximum length of the long PUCCH is 1 slot (14 symbols), and each PF is based on a PRB (12 subcarriers). At high frequencies, the definition of at least one of the slot and the PRB may become inappropriate.

[0084] Thus, in a specific frequency range, the Rel. 15 PUCCH may not be properly performed. If the PUCCH is inappropriate, system performance may be degraded.

[0085] The inventors of this application conceived the invention of this application based on the need for PUCCH transmission within a specific frequency range, which is different from the existing one. The specific frequency range can also be a frequency higher than the specific frequency. For example, the specific frequency can also be 7.125 GHz, 24.25 GHz, 52.6 GHz, etc. Parameters related to at least one of the PUCCH format, PUCCH sequence, time domain position of the DMRS used for the PUCCH, PUCCH length, and PUCCH bandwidth can also differ between the specific frequency range and other frequency ranges.

[0086] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The following embodiments may be used independently or in combination of at least two.

[0087] Furthermore, each embodiment is applicable not only to the above-mentioned FR4 (for example, a frequency higher than 52.6 GHz) but also to the existing FR1 and FR2.

[0088] In the present disclosure, the first frequency range may be replaced by a frequency range having a frequency lower than a specific frequency. In the present disclosure, the second frequency range may be a frequency range having a frequency higher than a specific frequency or a specific frequency range. In the present disclosure, mapping at least one of a signal, a sequence, information, or a channel to a resource (e.g., a PRB, RE, symbol, etc.) may also be replaced by configuration, allocation, etc.

[0089] In addition, the names of PFs are not limited to the names shown in the respective embodiments (Pfa, PFb, PFc, etc.), and may be replaced by other numbers, Latin letters, symbols, or combinations thereof.

[0090] (Wireless Communication Method)

[0091] <Implementation Method 1>

[0092] In a specific frequency range (eg, FR4), a new PUCCH format (PF) for transmitting UCI of up to 2 bits may also be supported.

[0093] It is also possible to use the new PF in a specific frequency range and use PF0 or PF1 in a frequency range other than the specific frequency range.

[0094] The sequence used in the new PF can be a low-peak-to-average power ratio (low PAPR) sequence or a pseudo-random (Pseudo-Noise (PN)) sequence (e.g., Gold sequence, M sequence). The low PAPR sequence can be a Constant Amplitude Zero Auto Correlation (CAZAC) sequence (e.g., Zadoff-Chu sequence) or a sequence based on a CAZAC sequence (e.g., a computer-generated (CGS) sequence specified in the table in the specification).

[0095] The length M of the sequence used in the new PF can be any one of a prime number, a positive integer, and a natural number.

[0096] The new PF may also be a new short PUCCH format (Pfa, sequence-based UCI transmission, sequence-based UCI transmission) that is based on PF0 and transmits at least one of HARQ-ACK and SR through changes in cyclic shift (CS).

[0097] The new PF may also be a new long PUCCH format (PFb) for sending at least one of HARQ-ACK and SR based on PF1 by multiplying a binary phase shift keying (BPSK) or quadrature phase shift keying (QPSK) signal by a base sequence.

[0098] The new PF (PFa or PFb) may also use at least one of the following transmission methods 1-1 to 1-3.

[0099] 《Sending Method 1-1》

[0100] A 12N-bit sequence can also be mapped to N PRBs.

[0101] N may be defined in the specification, set for the UE, or indicated to the UE. For example, N=3 may be defined in the specification.

[0102] N can also be associated with FR. At least one of FR1 to FR4 can be divided into multiple partial frequency ranges (sub-FRs). For example, a frequency range in FR4 that has frequencies lower than a specific frequency within FR4 can be defined as FR4-1, and a frequency range in FR4 that has frequencies higher than a specific frequency within FR4 can be defined as FR4-2. For example, the specification can define N = 3 for FR4-1 and N = 5 for FR4-2.

[0103] Figure 8 This is a diagram showing an example of PFa (PFa1) when N=3.

[0104] In this example, as resources for PFa, a time length of 1 symbol or 2 symbols and a bandwidth of N(3)PRB (12N(36) resource elements (RE)) can also be allocated to the UE. The UE can also use a cyclic shift α associated with (depending on) the UCI value. x , will be passed through the benchmark sequence of length 12N(36) [X0, ..., X 35 ] of the cyclic shift α x The obtained sequence is mapped to 3PRBs for each symbol.

[0105] Figure 9 This is a diagram showing an example of PFb (PFb1) in the case of N=3.

[0106] In this example, as a resource for PFb, a time length of more than 4 codewords and a bandwidth of N(3)PRB (3N(36)RE) can also be allocated to the UE. The UE can also multiply the complex coefficient of the UCI mapped to each codeword or the DMRS by a reference sequence of length 12N(36) for each RE to obtain a sequence [Y0, ..., Y 35 ] is mapped to 3PRB.

[0107] By using a sequence longer than 12 in the new PF, at least one of PAPR and cross-correlation can be reduced.

[0108] 《Sending Method 1-2》

[0109] An M-bit sequence may also be mapped to N PRBs.

[0110] M may be smaller than N. N may be 11N or the largest coefficient less than 12N.

[0111] M may be limited to 31 or more. N may be limited to 3 or more.

[0112] 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. No signal (eg, information, RS) may be mapped to the remaining REs of the N PRBs.

[0113] Figure 10 This is a diagram showing an example of PFa (PFa2) when N=3 and M=31.

[0114] In this example, as resources for PFa2, a time length of 1 symbol or 2 symbols and a bandwidth of N(3)PRB (12N(36)RE) can also be allocated to the UE. The UE can also use a cyclic shift α associated with (depending on) the UCI value. x , passing the benchmark sequence [X0,…,X 30 ] of the cyclic shift α x The obtained sequence is mapped continuously from the lowest RE in 3PRBs for each codeword.

[0115] Figure 11 This is a diagram showing an example of PFb (PFb2) in the case of N=3 and M=31.

[0116] In this example, as a resource for PFb2, a time length of more than 4 codewords and a bandwidth of N(3)PRB (3N(36)RE) can also be allocated to the UE. The UE can multiply the complex coefficient of the UCI mapped to each codeword or the DMRS by a reference sequence of length M(31) for each RE to obtain a sequence [Y0, ..., Y 30 ], mapped continuously from the lowest RE in 3PRB.

[0117] By using a sequence of any length for the new PF, at least one of PAPR and cross-correlation can be reduced. For example, a CAZAC sequence having a coefficient length of can be used to reduce PAPR and cross-correlation.

[0118] 《Sending Methods 1-3》

[0119] A sequence of coefficient M bits can also be mapped to M REs. M can also be a value that does not take into account the PRB. That is, PUCCH scheduling can also be processed based on REs instead of RBs.

[0120] M may also be limited to 31 or more.

[0121] Figure 12 This is a diagram showing an example of PFa (PFa3) when M=13.

[0122] In this example, as a resource for PFa3, a time length of 1 symbol or 2 symbols and a bandwidth of M(13)REs can also be allocated to the UE. The UE can also use a cyclic shift α associated with (depending on) the UCI value. x , the benchmark sequence [X0,…,X 12 ] of the cyclic shift α x The obtained sequence is mapped to 13REs per symbol.

[0123] Figure 13 This is a diagram showing an example of PFb (PFb3) when M=13.

[0124] In this example, as a resource for PFb3, a time length of more than 4 codewords and a bandwidth of M(13)REs may be allocated to the UE. The UE may also multiply the complex coefficients of the UCI mapped to each codeword or the DMRS by a reference sequence of length M(13) for each RE to obtain a sequence [Y0, ..., Y 12 ], mapped to 13RE.

[0125] By using a sequence of any length for the new PF, at least one of PAPR and cross-correlation can be reduced. For example, a CAZAC sequence with a coefficient length of can be used to reduce PAPR and cross-correlation.

[0126] According to Embodiment 1, the UE can transmit up to 2 bits of UCI on the PUCCH with a lower PAPR.

[0127] <Implementation Method 2>

[0128] The sequence sets used in PF0 and PF1 can also be updated ( Figure 14 ). The length of the sequence contained in the sequence set (M ZC ) can also be 12.

[0129] 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 also be used in at least one of Pfa and PFb in the first embodiment.

[0130] Sequence Collection 1

[0131] A new sequence set for at least one of PF0 and PF1 may also be defined independently of the existing (Rel.15NR) sequence set.

[0132] A new sequence set may be used for at least one of PFO and PF1 in a specific frequency range (eg, FR4), and an existing sequence set may be used for at least one of PFO and PF1 in a frequency range other than the specific frequency range.

[0133] When any one of the Pcell, PSCell, and PUCCH SCell is configured in a specific frequency range, a new sequence set may be used for at least one of PF0 and PF1.

[0134] Sequence Collection 2

[0135] A new sequence set for at least one of PF0 and PF1 may also be defined independently of the existing (Rel.15NR) sequence set.

[0136] The UE may also be notified (at least one of configured, indicated, and activated) of whether to use a new sequence set and an existing sequence set for at least one of PF0 and PF1. Either the new sequence set or the existing sequence set may be indicated by a DCI representing a PUCCH resource, may be activated by a MACCE, may be associated with a CORESET used in receiving a PDCCH representing a PUCCH resource, may be associated with a search space used in receiving a PDCCH representing a PUCCH resource, or may be associated with an RNTI used to scramble a CRC of a DCI representing a PUCCH resource.

[0137] Sequence Collection 3

[0138] A new sequence may be added to an existing (Rel.15NR) sequence set. For example, a new sequence having a sequence index of 30 or greater may be added to a sequence set in which sequences having sequence indexes of 0 to 29 are defined.

[0139] According to the second embodiment, for at least one of PF0 and PF1, a sequence that takes PAPR into consideration rather than cross-correlation (ie, inter-cell interference) can be used.

[0140] <Implementation Method 3>

[0141] In a specific frequency range (e.g., FR4), a new PF (PFc) may be introduced to transmit UCI of more than 2 bits using 1 or 2 symbols. The symbol length may also be greater than 2 symbols.

[0142] The UE may also apply at least one of the transmission method of embodiment 1 and the sequence set of embodiment 2 to the PFc sequence.

[0143] PFc may be at least one of the following transmission methods 2-1 to 2-3.

[0144] 《Sending Method 2-1》

[0145] In the new PF (PFc1), DMRS and UCI can also be time-division multiplexed (TDM). DFT-s-OFDM (transform precoding) can also be applied to PFc1.

[0146] PFc1 may also be a 2-symbol PUCCH without intra-slot frequency hopping (FH).

[0147] QPSK or π / 2-BPSK may also be used for PFc1. Whether QPSK or π / 2-BPSK is used for PFc1 may be specified in the specification or configured for the UE.

[0148] Figure 15 : is a diagram showing an example of PFc1. A UE can be allocated 2 symbols and 2 PRBs as resources of PFc1, DMRS is mapped across the 2 PRBs of the first symbol, and UCI is mapped across the 2 PRBs of the second symbol.

[0149] 《Sending Method 2-2》

[0150] In the new PF (PFc2), UCI with more than 2 bits can also be transmitted by changing the cyclic shift.

[0151] The UE may also not send DMRS in PFc2.

[0152] The UE may also determine the bandwidth (number of PRBs or number of REs) of PFc2 based on at least one of the UCI payload size and the sequence length.

[0153] For PFc2, a bandwidth wider than 16 PRBs may be specified in the specification and may be set for the UE. In high frequencies (eg, FR4), it is assumed that the frequency selectivity is small.

[0154] Figure 16This figure shows an example of UCI transmission using PFc2. In this example, a time length of 1 or 2 symbols and a bandwidth of 20 PRBs (240 REs) can be allocated to the UE as resources for PFc2. The UE can also use a cyclic shift α associated with (depending on) the UCI value. x , will be passed through the benchmark sequence of length 240 [X0, ..., X 239 ] of the cyclic shift α x The obtained sequence is mapped to 20 PRBs for each symbol.

[0155] 《Sending Method 2-3》

[0156] The new PF (PFc3) may be a combination of transmission methods 2-1 and 2-2.

[0157] like Figure 17 As shown, the UE can also transmit UCI in the first symbol by changing the cyclic shift (sequence-based UCI transmission similar to transmission method 2-2). The UE can also map a sequence obtained by cyclic shifting the reference sequence to the first symbol using a cyclic shift associated with the UCI value. The sequence used for the first symbol can also be used for channel estimation. The sequence can also be processed as a DMRS. Alternatively, a portion of the sequence (a few specific REs) can be processed as a DMRS.

[0158] The UE may also map the modulated and channel-coded UCI to the second symbol.

[0159] The UE may also transmit at least one of HARQ-ACK and SR in the first symbol and CSI in the second symbol. The UE may also transmit only the first symbol of PFc3. The UE may also transmit at least one of HARQ-ACK and SR in one symbol, or may repeatedly transmit at least one of HARQ-ACK and SR across two symbols. The UE may also transmit only CSI using two symbols of PFc3.

[0160] PFc3 may also be more than 2 symbols. For example, PFc3 may be a PUCCH up to 4 symbols. The UE may also map the sequence obtained by cyclic shifting the reference sequence to the first symbol, and map the modulated and channel-coded UCI to the second symbol and thereafter. The UE may also map the sequence obtained by cyclic shifting the reference sequence to odd-numbered (e.g., first, third, ...) symbols (symbol indices 0, 2, ...), and map the modulated and channel-coded UCI to even-numbered (e.g., second, fourth, ...) symbols (symbol indices 1, 3, ...).

[0161] In PFc3, the order in which the symbols of the sequence obtained by cyclic shifting the reference sequence are mapped and the symbols of the modulated and channel-coded UCI are mapped is not limited to the above example. For example, the UE may map the modulated and channel-coded UCI to the first symbol (odd-numbered symbol) and the sequence obtained by cyclic shifting the reference sequence to the second symbol (even-numbered symbol).

[0162] According to PFc3, the UE can send more than 2 bits of UCI on the PUCCH with low PAPR.

[0163] According to this embodiment, in a specific frequency range, it is possible to appropriately transmit UCI of more than 2 bits using a short PUCCH (for example, a PUCCH having a length shorter than PF3 and PF4).

[0164] <Implementation Method 4>

[0165] In a specific frequency range (eg, FR4), the UE may not expect to send PF2.

[0166] In a case where a PUCCH of 1 or 2 symbols is rarely used at a high frequency, according to this embodiment, it is possible to prevent performance degradation caused by using PF2 at a high frequency.

[0167] <Implementation Method 5>

[0168] In a specific frequency range (eg, FR4), some PFs may not be configured in the PUCCH configuration information (eg, PUCCH-Config).

[0169] The PUCCH resource set (PUCCH-ResourceSet) in the PUCCH configuration information or the PUCCH resource (PUCCH-Resource) in the PUCCH resource set may include several PFs that can be used within a specific frequency range.

[0170] When a PCell, PSCell, or PUCCH SCell is configured in a specific frequency range, the PUCCH resource set or PUCCH resources in the PUCCH configuration information for the cell may include several PFs that can be used in the specific frequency range.

[0171] Short PUCCH (e.g., PUCCH with less than 2 symbols) may not be used in a specific frequency range. PFs available in a specific frequency range may not include at least one of PF0 and PF2. PFs available in a specific frequency range may include at least one of PF1, PF3, and PF4.

[0172] The PFs usable in a specific frequency range may include a new PF (for example, at least one new PF in Embodiments 1 to 4, or at least one of Pfa, PFb, and PFc).

[0173] According to this embodiment, there is no need to consider the performance of PFs that are not actually used, so the UE implementation cost can be reduced.

[0174] <Implementation Method 6>

[0175] At least one of PF1, PF3, PF4, and a new PF (for example, at least one new PF in Embodiments 1 to 4, at least one of Pfa, PFb, and PFc) may support a time length longer than 14 symbols.

[0176] The time length supported by at least one of PF1, PF3, PF4 and the new PF may also be 1 time slot. 1 time slot may also be longer than 14 symbols. 1 PRB may also be narrower than 12 subcarriers. For example, Figure 18 As shown, 1 slot can be 28 symbols, and 1 PRB can also be 6 subcarriers.

[0177] For PF3 or PF4, at least one of the following DMRS positions 1-1 and 1-2 may also be used.

[0178] DMRS Position 1-1

[0179] New DMRS positions in the time domain may also be defined. The UE may also determine the DMRS positions for time lengths greater than 14 symbols based on the definition of the new DMRS positions (e.g., a table defined in the specification). The DMRS positions may also be configured according to either of the following examples 1 and 2.

[0180] [Example 1]

[0181] like Figure 19 As shown in FIG, the DMRS position for the PUCCH length (number of symbols) can also be specified in the standard table. According to the table, Figure 20 As shown, the DMRS positions can also be defined so that the DMRS number is maintained independently of the PUCCH time length.

[0182] [Example 2]

[0183] like Figure 21 As shown, the DMRS position for the PUCCH length can also be specified in the table of the specification. Figure 22 is the DMRS position based on the table when no additional DMRS is set. Figure 23This is the DMRS position based on the table when it is set to have additional DMRS. In this way, the DMRS position can be defined so as to maintain the DMRS density without depending on the PUCCH time length.

[0184] DMRS Position 1-2

[0185] The new DMRS position in the time domain may also be derived from multiple definitions of new DMRS positions (e.g., multiple rows (entries) in an existing table) in an existing system (e.g., Rel. 15). The UE may also determine a DMRS position for a time length greater than 14 symbols based on multiple definitions of the existing new DMRS position.

[0186] For example, when the PUCCH length L is 15 to 28, the PUCCH can be divided into two parts to determine the DMRS position. The length of the first part can be floor (L / 2), and the length of the second part can be ceil (L / 2). The UE can also use Figure 24 Such entries corresponding to the lengths of the respective parts of the existing table determine the DMRS positions of the respective parts.

[0187] For example, Figure 25 As shown, when 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, when 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.

[0188] For PF1, at least one of the next DMRS positions 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.

[0189] DMRS Position 2-1

[0190] The UE can alternately map DMRS and UCI in the time domain. The UE can also sequentially map DMRS and UCI to the time domain, starting with the existing (Rel. 15) DMRS mapping (indexing) for PF1. For example, the UE can map DMRS to odd-numbered (e.g., first, third, ...) symbols (symbol indices 0, 2, ...) and UCI to even-numbered (e.g., second, fourth, ...) symbols (symbol indices 1, 3, ...).

[0191] like Figure 26As shown, the UE may also map the DMRS to symbol indices l = 0, 2, …, 2*(ceil(L / 2)-1). The UE may also map the UCI to the remaining symbols of the PUCCH (symbols not mapped with DMRS).

[0192] 《DMRS Location 2-2》

[0193] The UE may also map the DMRS and the UCI alternately in the time domain. The UE may also map the DMRS and the UCI to the time domain by repeatedly using the existing (Rel.15) DMRS locations.

[0194] As Figure 27 shown, for a PUCCH length L ≤ 14, the UE maps the DMRS to symbol indices l = 0, 2…, 2*(ceil(L / 2)-1), and for a PUCCH length 14 < L <= 28, the UE divides the PUCCH of L symbols into a first part with length L1 = floor(L / 2) and a second part with length L2 = ceil(L / 2), and maps the DMRS to symbol indices l = 0, 2, …, 2*(ceil(L1 / 2)-1) in the first part and l = L2, L2+2, …, 2*(ceil(L2 / 2)-1) in the second part. The UE may also map the UCI to the remaining symbols of the PUCCH (symbols not mapped with DMRS).

[0195] For example, in the case where 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 the case where 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.

[0196] According to this embodiment, even when using a time slot longer than 14 symbols, the PUCCH can be properly transmitted.

[0197] <Embodiment 7>

[0198] Each PF may also be based on a sub-PRB. The sub-PRB may be replaced with a sub-RB, a PRB portion, an RB portion, etc.

[0199] The sub-PRB may be a subcarrier less than 12 in the frequency domain. For example, the sub-PRB may be at least one of 2, 3, 6, 9 subcarriers. Each PF may also use more than one sub-PRB.

[0200] The UE may also map the PUCCH to one or more sub-PRBs according to any one of the following mappings 1-1, 1-2.

[0201] 《Mapping 1-1》

[0202] The UE may map the PUCCH to consecutive subcarriers.

[0203] Mapping 1-2

[0204] The UE may also use interleaving to map the PUCCH to distributed subcarriers.

[0205] For example, when the UE maps the PUCCH to 6 distributed subcarriers, the PUCCH may also be mapped to subcarriers #0, #2, #4, ..., #10.

[0206] The UE may use either of the following sequences 1 and 2 for at least one of PF0 and PF1. The UE may use either of the following sequences 1 and 2 for at least one of PFa and PFb.

[0207] Sequence 1

[0208] The sequence length may also be the number of subcarriers in a subPRB. For example, a subPRB may have 6 subcarriers and the sequence length may also be 6.

[0209] Sequence 2

[0210] The sequence length may also be the number of subcarriers in multiple subPRBs. The UE may also map the PUCCH to the multiple subPRBs. For example, the sequence length may be 12 or more.

[0211] According to this embodiment, even when the PUCCH is mapped using a unit different from the PRB, the PUCCH can be appropriately transmitted.

[0212] <Implementation Method 8>

[0213] The size of one PRB may not be 12 subcarriers.

[0214] The UE may also map the PUCCH to more than one PRB according to any of the next mappings 2-1 and 2-2.

[0215] Mapping 2-1

[0216] The UE may also map the PUCCH to multiple PRBs.

[0217] Mapping 2-2

[0218] The UE can also map the PUCCH to one PRB. The sequence length can also be the number of subcarriers in the PRB. A PRB can have 6 subcarriers and the sequence length can also be 6.

[0219] According to this embodiment, even when the PUCCH is mapped using a unit smaller than 12 subcarriers, the PUCCH can be appropriately transmitted.

[0220] (Wireless Communication System)

[0221] The following describes a configuration of a wireless communication system according to an embodiment of the present disclosure. In this wireless communication system, communication is performed using one or a combination of the wireless communication methods according to the above-described embodiments of the present disclosure.

[0222] Figure 28 This figure shows an example of a schematic configuration of a wireless communication system according to one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP) or the fifth generation mobile communication system New Radio (5G NR).

[0223] In addition, the wireless communication system 1 can also support dual connectivity between multiple radio access technologies (Radio Access Technologies) (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC can also include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0224] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0225] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both MN and SN are NR base stations (gNB)).

[0226] The wireless communication system 1 may also include a base station 11 that forms a macrocell C1 with relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are narrower than the macrocell C1. User terminals 20 may also be located within at least one of the cells. The arrangement and number of cells and user terminals 20 are not limited to those shown in the figure. Hereinafter, when not distinguishing between base stations 11 and 12, they are collectively referred to as base stations 10.

[0227] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CCs) and dual connectivity (DC).

[0228] 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 FR4). The macro cell C1 may be included in FR1 or FR2, and the small cell C2 may be included in FR2 or FR4.

[0229] Furthermore, the user terminal 20 may communicate in each CC using at least one of time division duplex (TDD) and frequency division duplex (FDD).

[0230] Multiple base stations 10 can also be connected by wired (for example, optical fiber based on Common Public Radio Interface (CPRI)), X2 interface, etc.) or wireless (for example, NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 equivalent to the upper station can also be called an integrated access backhaul (IAB) donor, and the base station 12 equivalent to the relay station can also be called an IAB node.

[0231] 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 also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0232] The user terminal 20 may also be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0233] In the wireless communication system 1, a radio access scheme based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and uplink (UL), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), or single carrier frequency division multiple access (SC-FDMA) may be used.

[0234] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be applied to the UL and DL radio access schemes.

[0235] In the wireless communication system 1, as downlink channels, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH))), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. can also be used.

[0236] In addition, in the wireless communication system 1, as uplink channels, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. can also be used.

[0237] The PDSCH is used to transmit user data, higher-layer control information, and system information blocks (SIBs). The PUSCH can also be used to transmit user data, higher-layer control information, and the PBCH can also be used to transmit master information blocks (MIBs).

[0238] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information for at least one of the PDSCH and the PUSCH.

[0239] In addition, the DCI that schedules the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI that schedules the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, the PDSCH may also be interpreted as DL data, and the PUSCH may also be interpreted as UL data.

[0240] In PDCCH detection, a control resource set (CORESET) and a search space can also be used. A CORESET corresponds to the resources for searching for DCI. A search space corresponds to the search area and search method for PDCCH candidates. A CORESET can also be associated with one or more search spaces. The UE can also monitor the CORESET associated with a search space based on the search space settings.

[0241] A search space may also correspond to PDCCH candidates that match one or more aggregation levels. One or more search spaces may also be referred to as a search space set. Furthermore, the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," and "CORESET setting" in this disclosure may be used interchangeably.

[0242] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request (HARQ-ACK)), ACK / NACK, etc.), and scheduling request (SR) may also be transmitted via the PUCCH. A random access preamble used to establish a connection with a cell may also be transmitted via the PRACH.

[0243] In the present disclosure, downlink, uplink, etc. may be expressed without the word "link." Furthermore, various channels may be expressed without the word "physical" at the beginning.

[0244] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. may also be transmitted. In the wireless communication system 1, as DL-RS, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. may also be transmitted.

[0245] For example, a synchronization signal may be at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block containing SSs (PSS, SSS) and PBCHs (and DMRS for PBCHs) may also be referred to as an SS / PBCH block or an SS block (SSB). Furthermore, SSs and SSBs may also be referred to as reference signals.

[0246] 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), etc. can also be transmitted. In addition, DMRS can also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0247] (Base Station)

[0248] Figure 29 This figure shows an example of the configuration of a base station according to one embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission path interface (transmission line interface) 140. Furthermore, more than one of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140 may be provided.

[0249] In addition, in this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0250] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on the common knowledge in the technical field to which this disclosure relates.

[0251] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. It may also control transmission and reception, measurement, etc., using the transmission and reception unit 120, the transmission and reception antennas 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be transmitted as signals, and forward them to the transmission and reception unit 120. The control unit 110 may also perform call processing (setting up, releasing, etc.) of communication channels, manage the status of the base station 10, manage radio resources, etc.

[0252] The transceiver unit 120 may also include a 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 transceiver unit 120 may include a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter (phase shifter), a measurement circuit, a transceiver circuit, and the like, which are described based on the common knowledge in the technical field involved in this disclosure.

[0253] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0254] The transmitting and receiving antenna 130 can be formed of an antenna described based on the common knowledge in the technical field to which this disclosure relates, such as an array antenna.

[0255] The transmitting and receiving unit 120 may also transmit the aforementioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the aforementioned uplink channel, uplink reference signal, etc.

[0256] The transmitting and receiving unit 120 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmit beam and a receive beam.

[0257] The sending and receiving unit 120 (sending processing unit 1211) can also perform processing on the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer (for example, RLC retransmission control), the Medium Access Control (MAC) layer (for example, HARQ retransmission control), etc. on the data and control information obtained from the control unit 110 to generate a bit string to be sent.

[0258] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filtering, discrete Fourier transform (DFT)) processing (as needed), inverse fast Fourier transform (IFFT)) processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0259] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0260] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filtering, and demodulation into a baseband signal on the radio frequency band signal received via the transmitting and receiving antenna 130 .

[0261] The transmitting and receiving unit 120 (receiving processing unit 1212) can also apply receiving processing such as analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT) processing (as needed), filtering processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0262] The transmitting and receiving unit 120 (measuring unit 123) may also perform measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (RRM) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure 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 (e.g., received signal strength indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0263] The transmission path interface 140 can also send and receive signals (return signaling) between the devices included in the core network 30, other base stations 10, etc., and can also obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0264] In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may also be constituted by at least one of the transmitting and receiving unit 120 , the transmitting and receiving antenna 130 , and the transmission path interface 140 .

[0265] In addition, the transmitting and receiving unit 120 may also transmit a reference signal (e.g., SSB, CSI-RS, etc.). The transmitting and receiving unit 120 may also transmit information (MAC CE or DCI) indicating the TCI state for a specific DL transmission. The TCI state may also indicate at least one of a reference signal (e.g., SSB, CSI-RS, etc.), a QCL type, and a cell transmitting the reference signal. The TCI state may also indicate more than one reference signal. The more than one reference signal may include a QCL type A reference signal or a QCL type D reference signal.

[0266] The control unit 110 can also be assumed that the first reference signal of the spatial relationship of a specific uplink transmission (e.g., SRS, PUCCH, PUSCH, etc.) is the transmission control indication (TCI) state of a specific downlink channel (e.g., PDCCH, PDSCH, etc.) or the second reference signal of QCL type D in the quasi co-location (QCL) assumption (e.g., SSB, CSI-RS).

[0267] (User Terminal)

[0268] Figure 30 This figure shows an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Furthermore, more than one of each of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided.

[0269] In this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, but it is also assumed that the user terminal 20 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may be omitted.

[0270] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on the common knowledge in the technical field to which this disclosure relates.

[0271] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission, reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals and forward them to the transmission and reception unit 220.

[0272] The transceiver unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may also include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may include a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, and the like, which are described based on the common knowledge in the technical field involved in this disclosure.

[0273] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit, or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be configured as a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0274] The transmitting and receiving antenna 230 can be formed of an antenna described based on the common knowledge in the technical field to which this disclosure relates, such as an array antenna.

[0275] The transmitting and receiving unit 220 may also receive the aforementioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the aforementioned uplink channel, uplink reference signal, etc.

[0276] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0277] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data, control information, etc. obtained from the control unit 210 to generate a bit string to be sent.

[0278] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filtering, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0279] In addition, whether or not to apply DFT processing may also be based on the transform precoding setting. For a certain channel (e.g., PUSCH), if transform precoding is activated (enabled), the transmitting / receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the aforementioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, the transmitting / receiving unit 220 (transmitting processing unit 2211) may also perform DFT processing as the aforementioned transmission processing without performing DFT processing.

[0280] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filtering, amplification, etc. on the baseband signal into a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0281] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may also perform amplification, filtering, and demodulation into a baseband signal on the radio frequency band signal received via the transmitting and receiving antenna 230 .

[0282] The transmitting and receiving unit 220 (receiving processing unit 2212) can also apply analog-to-digital conversion, FFT processing, IDFT processing (as needed), filtering processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0283] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to received signals. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signals. The measuring unit 223 may also measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 210.

[0284] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be constituted by at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0285] The control unit 210 may also determine, for transmission of a physical uplink control channel (PUCCH), parameters related to at least one of a PUCCH format (e.g., any one of PF0-4, PFa-c, or the PUCCH resource set of Embodiment 5), a sequence used for the PUCCH (e.g., any one of the sequences of Embodiments 1-3), a time-domain position of a demodulation reference signal (DMRS) used for the PUCCH (e.g., any one of the DMRS positions of Embodiment 6), a length of the PUCCH (e.g., a PUCCH length, a PUCCH length longer than 14 symbols), and a bandwidth of the PUCCH (e.g., a PRB, a sub-PRB, or a bandwidth less than 12 subcarriers). The transmitting / receiving unit 220 may also transmit uplink control information (UCI) on the PUCCH. The parameters in a second frequency range (e.g., FR4, FR2, etc.) higher than the first frequency range (e.g., FR2, FR1, etc.) may also differ from the parameters in the first frequency range.

[0286] The length of the sequence may be longer than 12. The transmitting unit 220 may transmit at least one of a signal obtained by cyclic shifting the sequence and a signal obtained by multiplying the DMRS and the UCI by the sequence (Embodiments 1 to 3).

[0287] The transmitting unit 220 may also transmit, on the PUCCH, a signal obtained by time division multiplexing (TDM) of a signal based on the sequence and a signal based on the UCI (Embodiment 3).

[0288] The length of the PUCCH may be longer than 14 symbols. The control unit 210 may also determine the time domain position based on the length of the PUCCH (Embodiment 6).

[0289] The PUCCH may be mapped to at least one of a time slot longer than 14 symbols and a resource block narrower than 12 subcarriers (Embodiments 7 and 8).

[0290] (Hardware Structure)

[0291] In addition, the block diagrams used in the description of the above embodiments show blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented by a device that is physically or logically combined, or two or more physically or logically separated devices can be directly or indirectly connected (for example, by wired, wireless, etc.) and implemented by these multiple devices. The functional block can also be implemented by combining the above-mentioned one device or the above-mentioned multiple devices with software.

[0292] Here, the functions include judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, resolving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that implements a sending function may also be referred to as a transmitting unit, a transmitter, etc. Any of them are as described above, and the implementation method is not particularly limited.

[0293] For example, a base station, a user terminal, etc. 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. Figure 10 This figure shows an example of the hardware configuration of a base station and a user terminal according to one embodiment. The base station 10 and user terminal 20 described above can also 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.

[0294] In addition, in this disclosure, the terms such as device, circuit, equipment, section, and unit are interchangeable. The hardware structure of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

[0295] For example, although only one processor 1001 is shown, multiple processors may be provided. Furthermore, processing may be performed by a single processor, or by two or more processors simultaneously, sequentially, or using other methods. Furthermore, processor 1001 may be implemented using more than one chip.

[0296] Regarding the various functions in the base station 10 and the user terminal 20, for example, they are achieved by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0297] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, a computing device, registers, etc. For example, at least a portion of the aforementioned control unit 110 (210) and the transmitting and receiving unit 120 (220) may also be implemented by the processor 1001.

[0298] In addition, the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and performs various processes based on the program. As a program, a program that causes a computer to perform at least a portion of the operations described in the above embodiments can be used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated by the processor 1001, and the other functional blocks can also be implemented similarly.

[0299] The memory 1002 may also be a computer-readable recording medium, for example, composed of at least one of a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), or other appropriate storage medium. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program code), software modules, etc. for implementing the wireless communication method according to one embodiment of the present disclosure.

[0300] The storage 1003 may also be a computer-readable recording medium, such as a flexible disk, a floppy disk, an optical / magnetic disk (such as a compact disk (Compact Disc ROM (CD-ROM)), etc.), a digital versatile disk, a Blu-ray disk, a removable disk, a hard disk drive, a smart card, a flash memory device (such as a card, a stick, or a key drive), a magnetic stripe, a database, a server, or other appropriate storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0301] The communication device 1004 is hardware (a transmitting and receiving device) for communicating 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. To implement at least one of frequency division duplex (FDD) and time division duplex (TDD), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like. For example, the aforementioned transmitting and receiving unit 120 (220) and the transmitting and receiving antenna 130 (230) may also be implemented by the communication device 1004. The transmitting and receiving unit 120 (220) may also be physically or logically separated from the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0302] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to the outside (e.g., a display, speaker, light emitting diode (LED) lamp, etc.). Alternatively, the input device 1005 and the output device 1006 may be integrated (e.g., a touch panel).

[0303] Furthermore, the processor 1001, memory 1002, and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured as a single bus or may be configured as different buses between the devices.

[0304] Furthermore, the base station 10 and user terminal 20 may also 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), or a field programmable gate array (FPGA). Such hardware may be used to implement part or all of the functional blocks. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0305] (Variation)

[0306] In addition, the terms described in this disclosure and the terms required for understanding this disclosure may also be replaced with terms having the same or similar meanings. For example, channel, symbol, and signal (signal or signaling) may be replaced with each other. In addition, a signal may also be a message. A reference signal may also be referred to as RS, or may be referred to as a pilot, pilot signal, etc. depending on the applied standard. In addition, a component carrier (CC) may also be referred to as a cell, frequency carrier, carrier frequency, etc.

[0307] A radio frame can also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) that constitute a radio frame can also be called a subframe. Furthermore, a subframe can also be composed of one or more time slots in the time domain. A subframe can also be a fixed time length (e.g., 1 ms) that is independent of the parameter set (numerology).

[0308] Here, a parameter set may also refer to communication parameters applied to at least one of the transmission and reception of a signal or channel. For example, a parameter set may also represent 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 transmitter and receiver in the frequency domain, specific windowing processing performed by the transmitter and receiver in the time domain, and the like.

[0309] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0310] A time slot may also contain multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. Furthermore, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as PDSCH (PUSCH) mapping type B.

[0311] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units used for signal transmission. Radio frames, subframes, time slots, mini-time slots, and symbols may also be referred to by their respective equivalents. Furthermore, the terms frame, subframe, time slot, mini-time slot, and symbol may be used interchangeably in this disclosure.

[0312] For example, a subframe can also be called a TTI, multiple consecutive subframes can also be called a TTI, and a time slot or a mini-time slot can also be called a TTI. In other words, at least one of the subframe and the TTI can be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. In addition, the unit representing the TTI can also be called a time slot, a mini-time slot, etc. instead of a subframe.

[0313] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communications. For example, in the LTE system, a base station schedules each user terminal by allocating radio resources (such as the frequency bandwidth and transmit power available to each user terminal) in TTI units. The definition of TTI is not limited to this.

[0314] The TTI may also be a unit of time for transmitting channel-coded data packets (transport blocks), code blocks, code words, etc., and may also be a unit of processing for scheduling, link adaptation, etc. Furthermore, when a TTI is given, the time interval (e.g., the number of symbols) to which the transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.

[0315] Furthermore, when a time slot or a mini-time slot is referred to as a TTI, one or more TTIs (i.e., one or more time slots or one or more mini-time slots) may also be the minimum time unit for scheduling. Furthermore, the number of time slots (mini-time slots) constituting the minimum time unit for scheduling may also be controlled.

[0316] A TTI having a time length of 1 ms 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 time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini-slot, a subslot, a time slot, etc.

[0317] In addition, long TTI (for example, normal TTI, subframe, etc.) can also be interpreted as TTI with a time length exceeding 1ms, and short TTI (for example, shortened TTI, etc.) can also be interpreted as TTI with a TTI length smaller than long TTI and greater than 1ms.

[0318] A resource block (RB) is a unit of resource allocation in the time and frequency domains. In the frequency domain, it may also include one or more consecutive subcarriers (subcarriers). The number of subcarriers included in an RB can also be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers included in an RB can also be determined based on the parameter set.

[0319] In addition, an RB may also include one or more symbols in the time domain, and may also be the length of a slot, a mini-slot, a subframe, or a TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks.

[0320] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0321] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0322] A Bandwidth Part (BWP) (also referred to as a fractional bandwidth) can also represent a subset of contiguous common resource blocks (RBs) used for a parameter set within a carrier. Common RBs can also be identified by their index relative to the common reference point of the carrier. PRBs can also be defined within a BWP and numbered within that BWP.

[0323] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured within one carrier.

[0324] At least one of the configured BWPs may be activated, and the UE may not assume that it will transmit or receive specific signals / channels outside of the activated BWP. In addition, "cell," "carrier," etc. in this disclosure may also be interpreted as "BWP."

[0325] The above-mentioned structures of radio frames, subframes, slots, mini-slots, and symbols are merely examples. For example, various modifications may be made to the number of subframes in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots within a slot, the number of symbols and RBs within a slot or mini-slot, the number of subcarriers within an RB, the number of symbols within a TTI, the symbol length, and the cyclic prefix (CP) length.

[0326] Furthermore, the information and parameters described in this disclosure may be expressed as absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may be indicated by specific indexes.

[0327] In this disclosure, the names used for parameters, etc., are not intended to be limiting in any respect. Furthermore, the mathematical formulas for these parameters, etc., may differ from those explicitly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore, the various names assigned to these various channels and information elements are not intended to be limiting in any respect.

[0328] Information, signals, and the like described in this disclosure may also 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 referred to throughout the foregoing description may also be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0329] Furthermore, information, signals, etc. can be output from a higher layer (upper layer) to a lower layer (lower layer), or from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0330] Input and output information, signals, etc. can be stored in a specific location (e.g., memory) or managed using a management table. Input and output information, signals, etc. can be overwritten, updated, or appended. Output information, signals, etc. can also be deleted. Input information, signals, etc. can also be sent to other devices.

[0331] The notification of information is not limited to the methods / implementations described in the present disclosure, and may also be performed by other methods. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information (DCI))), uplink control information (Uplink Control Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC)) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0332] In addition, 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), etc. In addition, RRC signaling may also be referred to as RRC message, for example, RRC Connection Setup message, RRC Connection Reconfiguration message, etc. In addition, MAC signaling may also be notified using MAC Control Element (CE), for example.

[0333] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0334] The determination can be made by a value represented by a bit (0 or 1), a true or false value (Boolean value) represented by true (true) or false (false), or by comparison of numerical values ​​(for example, comparison with a specific value).

[0335] Whether software is called software, firmware, middleware, microcode, hardware description language, or other names, it should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, program, sub-program, software module, application, software application, software package, routine, sub-routine, object, executable file, execution thread, procedure, function, etc.

[0336] Furthermore, software, instructions, information, and the like may also be transmitted and received via a transmission medium. For example, if the software is transmitted from a website, server, or other remote source using at least one of a wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and a wireless technology (infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0337] The terms "system" and "network" used in this disclosure can be used interchangeably. "Network" may also refer to devices included in the network (eg, base stations).

[0338] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)" "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angle", "antenna", "antenna element", and "panel" can be used interchangeably.

[0339] In this disclosure, terms such as "base station (BS)", "wireless base station", "fixed station", "NodeB", "eNB (eNodeB)", "gNB (gNodeB)", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)")", "panel", "cell", "sector", "cell group", "carrier", and "component carrier" are used interchangeably. In some cases, a base station may be referred to as a macro cell, a small cell, a femto cell, or a pico cell.

[0340] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the base station's overall coverage area can be divided into multiple smaller areas, each of which can also provide communication services through a base station subsystem (for example, a small base station (Remote Radio Head (RRH)) for indoor use). Terms such as "cell" or "sector" refer to a portion or the entire coverage area of ​​at least one of a base station and a base station subsystem providing communication services within that coverage area.

[0341] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” are used interchangeably.

[0342] A mobile station is also sometimes referred to as a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other appropriate terminology.

[0343] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. Furthermore, at least one of the base station and the mobile station may also be a device mounted on a mobile object, a mobile object itself, etc. The mobile object may be a vehicle (e.g., a vehicle, an aircraft, etc.), a mobile object that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Furthermore, at least one of the base station and the mobile station may also include a device that does not necessarily move when performing communication operations. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0344] In addition, the base station in the present disclosure can also be interpreted as a user terminal. For example, the various methods / implementations of the present disclosure can also be applied to a structure in which the communication between a base station and a user terminal is replaced by communication between multiple user terminals (for example, it can also be called device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the user terminal 20 has the functions of the above-mentioned base station 10. In addition, expressions such as "uplink" and "downlink" can also be interpreted as expressions corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can also be interpreted as side channels.

[0345] Likewise, the user terminal in the present disclosure may also be interpreted as a base station. In this case, the base station 10 may also have the functions of the user terminal 20 described above.

[0346] In the present disclosure, actions are assumed to be performed by a base station, and sometimes, depending on the circumstances, by its upper node. Obviously, in a network including one or more network nodes including 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, a Mobility Management Entity (MME)), a Serving-Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0347] The various methods / implementations described in this disclosure may be used individually or in combination, and may be switched between them during execution. Furthermore, the processing procedures, sequences, flow charts, and the like of the various methods / implementations described in this disclosure may be reversed as long as they do not conflict. For example, the elements of various steps described in this disclosure are presented in an illustrative order, but are not limited to the specific order presented.

[0348] The various modes and 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, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.18 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (WiMAX (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (WiMAX (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), systems using other appropriate wireless communication methods, and next-generation systems based on these. In addition, multiple systems can also be combined for application (for example, LTE or LTE-A combined with 5G, etc.).

[0349] The phrase “based on” used in this disclosure does not mean “based only on” unless otherwise specified. In other words, the phrase “based on” means both “based only on” and “based at least on.”

[0350] Any reference to an element using the designations "first," "second," etc., as used in this disclosure, does not necessarily define the quantity or order of these elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Therefore, reference to a first and a second element does not necessarily imply that only two elements may be used, or that the first element necessarily takes precedence over the second element in some manner.

[0351] The term "determining" as used in this disclosure may encompass a variety of actions. For example, "determining" may also include judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database, or other data structure), ascertaining, etc. as instances of "determining."

[0352] In addition, “judgment (decision)” can also regard receiving (for example, receiving information), transmitting (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc. as situations of “judgment (decision)”.

[0353] In addition, “judgment (decision)” can also include resolving, selecting, choosing, establishing, comparing, etc. In other words, “judgment (decision)” can also include some actions as “judgment (decision)”.

[0354] In addition, "judgment (decision)" can also be interpreted as "assuming", "expecting", "considering", etc.

[0355] As used in this disclosure, the terms "connected," "coupled," and all variations thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between the two elements being "connected" or "coupled." The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may also be interpreted as "access."

[0356] In the present disclosure, when two elements are connected, it can be considered that they are "connected" or "combined" to each other using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, light (both visible and invisible) region, etc. as several non-limiting and non-inclusive examples.

[0357] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other." Alternatively, the term may also mean "A and B are each different from C." Terms such as "separate" and "bound" may also be interpreted as meaning "different."

[0358] In this disclosure, when the terms "include," "including," and variations thereof are used, these terms, like the term "comprising," have an inclusive meaning. Furthermore, the term "or" used in this disclosure does not mean an exclusive OR.

[0359] In the present disclosure, when an article is added by translation, such as a, an, and the in English, the present disclosure may also include a case where the noun following the article is in a plural form.

[0360] While the inventions disclosed herein have been described in detail above, it will be apparent to those skilled in the art that the inventions disclosed herein are not limited to the embodiments described herein. The inventions disclosed herein can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the claims. Therefore, the descriptions in this disclosure are for illustrative purposes only and are not intended to limit the inventions disclosed herein in any way.

Claims

1. A terminal, comprising: a control unit for determining parameters related to a sequence of a physical uplink control channel (PUCCH) format for transmitting uplink control information (UCI) of 2 bits or less, used in a second frequency range higher than the first frequency range; as well as a sending unit, using the PUCCH format in which the length of the sequence is longer than 12, to send the UCI on the PUCCH, The first frequency range is a frequency range up to 52.6 GHz, and the second frequency range is a frequency range higher than 52.6 GHz.

2. The terminal according to claim 1, wherein: The parameters are associated with frequency ranges.

3. The terminal according to claim 1, wherein: The parameter is the number of physical resource blocks (PRBs) allocated to the PUCCH, and the number of PRBs is set for each PUCCH resource.

4. A wireless communication method, which is a wireless communication method of a terminal, comprising: A step of determining parameters related to a sequence of a physical uplink control channel (PUCCH) format for transmitting uplink control information (UCI) of 2 bits or less, used in a second frequency range higher than the first frequency range; as well as The step of sending the UCI on the PUCCH using the PUCCH format having a sequence length longer than 12, The first frequency range is a frequency range up to 52.6 GHz, and the second frequency range is a frequency range higher than 52.6 GHz.

5. A base station, comprising: a transmitting unit configured to notify parameters related to a sequence of a physical uplink control channel (PUCCH) format used by a terminal to transmit uplink control information (UCI) of 2 bits or less, used in a second frequency range higher than the first frequency range; as well as a control unit, instructing the terminal to use the PUCCH format having a sequence length longer than 12 to send the UCI on the PUCCH, The first frequency range is a frequency range up to 52.6 GHz, and the second frequency range is a frequency range higher than 52.6 GHz.

6. A system having a terminal and a base station, The terminal includes: a control unit for determining parameters related to a sequence of a physical uplink control channel (PUCCH) format for transmitting uplink control information (UCI) of 2 bits or less, used in a second frequency range higher than the first frequency range; as well as a sending unit, using the PUCCH format in which the length of the sequence is longer than 12, to send the UCI on the PUCCH, The base station includes: A sending unit notifying the parameters; as well as a control unit, instructing the terminal to use the PUCCH format having a sequence length longer than 12 to send the UCI on the PUCCH, The first frequency range is a frequency range up to 52.6 GHz, and the second frequency range is a frequency range higher than 52.6 GHz.

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