Terminal and wireless communication method

Abstract

A terminal according to one embodiment of the present disclosure is characterized by comprising: a control unit that determines uplink control channel resources based on a Phase Tracking Reference Signal (PTRS) used for an uplink control channel; and a transmission unit that transmits uplink control information using the determined uplink control channel resources. According to one embodiment of the present disclosure, appropriate communication is possible even in an environment expected to have high phase noise.

Description

Technical Field

[0001] The present disclosure relates to a terminal and a wireless communication method 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 (e.g., NR after Rel. 16), studies are underway to utilize a frequency range (FR) higher than a specific frequency (e.g., 52.6 GHz) (e.g., also referred to as FR4). In FR4, there are concerns about increased phase noise.

[0009] In Rel-15 NR, phase noise becomes a problem when using a higher modulation order, so the above-mentioned PTRS is used when the modulation method is 16-quadrature amplitude modulation (QAM), 64QAM, 256QAM, etc.

[0010] On the other hand, in FR4, the phase noise is considered to be large as described above. Therefore, in order to suppress performance degradation, it is sought to perform some correction on the phase noise for channels or signals using a lower modulation order, such as the uplink control channel.

[0011] However, research on how to perform phase correction on uplink control channels has not yet progressed. If this method is not clearly defined, there is a concern that the reception quality of uplink control channels will deteriorate in high-frequency bands such as FR4, hindering increases in communication throughput.

[0012] 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 in an environment where large phase noise is expected.

[0013] Means for solving problems

[0014] A terminal according to one embodiment of the present invention is characterized in that it comprises: a control unit that determines uplink control channel resources by taking into account a Phase Tracking Reference Signal (PTRS) used for an uplink control channel; and a sending unit that uses the determined uplink control channel resources to send uplink control information.

[0015] Effects of the Invention

[0016] According to one aspect of the present disclosure, communication can be performed appropriately even in an environment where large phase noise is expected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a diagram showing an example of FR.

[0018] Figure 2 This figure summarizes the features of the PUCCH format specified in Rel-15 NR.

[0019] Figure 3 This is a diagram showing an example of parameters without considering the PTRS for PUCCH and parameters considering the PTRS for PUCCH.

[0020] Figure 4This is a diagram showing an example of a schematic configuration of a wireless communication system according to one embodiment.

[0021] Figure 5 This is a diagram showing an example of the configuration of a base station according to one embodiment.

[0022] Figure 6 This is a diagram showing an example of the configuration of a user terminal according to one embodiment.

[0023] Figure 7 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

[0024] (FR)

[0025] In NR, the use of frequency bands up to 52.6 GHz is under study. In NR versions after Rel. 16, the use of frequency bands above 52.6 GHz is under study. The term "frequency band" can also be appropriately referred to as "frequency range (FR)."

[0026] Figure 1 is a diagram showing an example of FR. Figure 1 As shown, FR4, for example, covers frequencies from 52.6 GHz to 114.25 GHz. Furthermore, in the existing Rel-15 NR, FR1 corresponds to 410 MHz to 7.152 GHz, and FR2 corresponds to 24.25 GHz to 52.6 GHz. FR4 can also be referred to as FRx (where x is an arbitrary character string).

[0027] In frequency bands higher than 52.6 GHz, phase noise and propagation loss are expected to be high. Furthermore, there is the issue of high sensitivity to the nonlinearity of the Peak-to-Average Power Ratio (PAPR) and the power amplifier (PA).

[0028] If the above matters are taken into consideration, it is considered to use CP-OFDM and DFT-S-OFDM with a wider subcarrier spacing than Rel-15 NR in a frequency band higher than 52.6 GHz (or a waveform higher than (greater than (above) the waveform used for 52.6 GHz)).

[0029] Furthermore, in Rel. 15, DL channels (eg, PDCCH, etc.) are designed based on an OFDM waveform, and studies are also being conducted on channel design based on a single carrier in frequency bands higher than 52.6 GHz.

[0030] (PTRS)

[0031] In Rel-15 NR, the base station can also send a Phase Tracking Reference Signal (PTRS) via the downlink. The base station can also map and send the PTRS continuously or discontinuously in the time direction on a specific number (e.g., one) of subcarriers.

[0032] For example, the UE can also receive PTRS during at least a portion of the time period (time slot, codeword, etc.) during which the downlink shared channel (Physical Downlink Shared Channel (PDSCH)) is scheduled (in other words, during the time period during which the PDSCH is received). The PTRS transmitted by the base station can also be called DL PTRS.

[0033] In addition, the UE may also transmit the PTRS via the uplink. In a specific number (eg, one) of subcarriers, the UE may also map and transmit the PTRS continuously or non-continuously in the time direction.

[0034] For example, the UE may transmit PTRS during at least a portion of the scheduled period (time slot, symbol, etc.) of the uplink shared channel (Physical Uplink Shared Channel (PUSCH)) (in other words, the period during which the PUSCH is transmitted). The PTRS transmitted by the UE may also be referred to as UL PTRS.

[0035] In the present disclosure, PTRS may also be replaced by at least one of DL PTRS and UL PTRS.

[0036] The base station or UE may also determine phase noise based on the received PTRS and correct the phase error of the received signal (eg, PUSCH, PDSCH).

[0037] The UE may also use higher layer signaling to configure PTRS configuration information (PTRS-DownlinkConfig for DL and PTRS-UplinkConfig for UL). For example, the PTRS configuration information may be included in the configuration information (DMRS-DownlinkConfig, DMRS-UplinkConfig) of the demodulation reference signal (DMRS) of the PDSCH or PUSCH.

[0038] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.

[0039] MAC signaling may also use, for example, MAC Control Element (MAC CE) and MAC Protocol Data Unit (MAC PDU). Broadcast information may also include, for example, Master Information Block (MIB), System Information Block (SIB), minimum system information (Remaining Minimum System Information (RMSI)), and Other System Information (OSI).

[0040] The PTRS configuration information may also include information used to determine the time density of the PTRS (e.g., the "timeDensity" field of the RRC parameter). This information may also be referred to as time density information. The time density information may also indicate, for example, a threshold value related to the time density described later (e.g., at least one of ptrs-MCS1, ptrs-MCS2, ptrs-MCS3, and ptrs-MCS4).

[0041] The PTRS configuration information may also include information used to determine the frequency density of the PTRS (e.g., the "frequencyDensity" field of the RRC parameter). This information may also be referred to as frequency density information. The frequency density information may also indicate, for example, a threshold value related to the frequency density described later (e.g., N RB0 、N RB1at least one of them).

[0042] PTRS configuration information may be configured with separate values for DL PTRS and UL PTRS. PTRS configuration information may be configured in the UE for each BWP (Bandwidth Part) within a cell, or may be configured commonly for each BWP (cell-specific).

[0043] When PTRS setting information is not set (notified) (for example, before RRC connection), the UE may assume that PTRS does not exist (not included in the transmitted or received signal). When PTRS setting information is set (notified) (for example, after RRC connection), the UE may determine the PTRS mode (at least one of time density and frequency density) based on the detected downlink control information (DCI).

[0044] For example, when at least one of the time density information and the frequency density information is set and the RNTI (Radio Network Temporary Identifier) used for CRC (Cyclic Redundancy Check) scrambling of the DCI is a specific RNTI (for example, C-RNTI (Cell-RNTI), CS-RNTI (Configured Scheduling RNTI)), the UE can also assume that there are antenna ports for PTRS and determine the PTRS mode based on the MCS scheduled by the DCI (scheduled MCS) and the scheduled bandwidth (scheduled bandwidth).

[0045] The UE can also determine the MCS index (I MCS ), based on the I MCS The time density L of PTRS is determined by the threshold value related to the above time density. PT-RS .

[0046] For example, UE may also determine L as follows: PT-RS :

[0047] If I MCS <ptrs-MCS1, it is assumed that there is no PTRS,

[0048] If ptrs-MCS1≤I MCS <ptrs-MCS2, then L PT-RS =4,

[0049] If ptrs-MCS2≤I MCS <ptrs-MCS3, then L PT-RS =2,

[0050] If ptrs-MCS3≤I MCS <ptrs-MCS4, then L PT-RS =1.

[0051] The correspondence between the MCS index and the time density of the PTRS is not limited to this. For example, the number of thresholds can be less than 4 or more than 4. PT-RS The value of may also mean that the smaller it is, the higher the density is, for example, it may also represent the configuration interval of PTRS code elements.

[0052] The UE can also determine the number of resource blocks to be scheduled (N) based on the frequency domain resource allocation field of the DCI. RB ), based on the N RB The frequency density K of PTRS is determined by the threshold value related to the frequency density mentioned above. PT-RS .

[0053] For example, the UE may also determine K as follows: PT-RS :

[0054] If N RB <N RB0 , it is assumed that there is no PTRS,

[0055] If N RB0 ≤N RB <N RB1 , then K PT-RS =2,

[0056] If N RB1 ≤N RB , then K PT-RS =4.

[0057] The correspondence between the scheduled bandwidth and the frequency density of PTRS is not limited to this. For example, the number of thresholds can be less than 2 or more than 2. In addition, K PT-RS The value of may also mean that the smaller it is, the higher the density is, for example, it may also represent the configuration interval of the subcarriers of PTRS.

[0058] In the case where the time density information is not set, the UE can also assume that L PT-RSis a specific value (e.g., 1). In the case where the frequency density information is not set, the UE may also assume that K PT-RS is a specific value (for example, 2). PT-RS and K PT-RS The relevant specific value may be predetermined or set through higher layer signaling.

[0059] However, in Rel-15 NR, PUCCH formats (PUCCH Format (PF)) 0-4 are specified. Figure 2 This diagram summarizes the features of the PUCCH format specified in Rel-15 NR. The number of UCI bits is determined by using an appropriate PF depending on the channel state, etc.

[0060] Here, as the modulation method of PF of Rel-15 NR, the following is used:

[0061] PF1: Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK),

[0062] PF2: QPSK,

[0063] ·PF3, 4: QPSK, π / 2-BPSK (π / 2 shifted BPSK).

[0064] In Rel-15 NR, phase noise becomes a problem when using higher modulation orders. Therefore, the above-mentioned PTRS is mainly used when the PDSCH and PUSCH modulation methods are 16-quadrature amplitude modulation (QAM), 64QAM, 256QAM, etc.

[0065] On the other hand, in FR4, phase noise is considered to be large as described above. Therefore, in order to suppress performance degradation, some correction of phase noise is required for signals with lower modulation order, such as QPSK and π / 2-BPSK, especially PUCCH.

[0066] However, research on how to perform phase correction on the PUCCH has not yet been conducted. If this method is not clearly defined, there is a concern that the reception quality of the PUCCH will deteriorate in high-frequency bands such as FR4, hindering the increase in communication throughput.

[0067] Therefore, the inventors of the present invention have conceived of a signal structure, a control method, and the like for appropriately performing phase correction on the PUCCH.

[0068] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The wireless communication methods according to the respective embodiments may be applied individually or in combination of at least two.

[0069] Furthermore, each embodiment is applicable not only to the aforementioned FR4 (e.g., a specific frequency range higher than 52.6 GHz) but also to other FRs (e.g., FR1, FR2, FR3, etc.) FRx (x is any alphanumeric character) in the present disclosure may be replaced with any FRx.

[0070] In addition, the PF in each embodiment may be at least one of the Rel-15 NR PFs (e.g., PF1-4), or a newly defined PF (e.g., an extended or modified Rel-15 NR PF). Furthermore, the PUCCH in each embodiment may be replaced with any channel or signal.

[0071] (Wireless Communication Method)

[0072] <First embodiment>

[0073] The first embodiment relates to an additional RS (e.g., PTRS) introduced into the PF. Furthermore, this additional RS may also be referred to as DMRS, DMRS for phase correction, PTRS for PUCCH, etc. Hereinafter, it is referred to as PTRS for PUCCH.

[0074] When sending PUCCH, the UE may also use the following method to generate, map and send the PTRS for the PUCCH.

[0075] [PTRS series for PUCCH]

[0076] The UE may derive a sequence of PTRSs for PUCCH using the mechanism of at least one of the PTRSs for PUSCH and the PTRSs for PDSCH.

[0077] For example, when the transform precoder is valid in the UE (for example, the transform precoder of PUSCH is valid), the series of PTRS for PUCCH can also be generated using a formula in which PUSCH / PDSCH is replaced with PUCCH in the series generation formula of at least one of the PTRS for PUSCH and the PTRS for PDSCH.

[0078] The PTRS sequence for PUCCH may be derived using the same sequence generation formula as at least one of the DMRS for PUSCH, DMRS for PDSCH, and DMRS for PUCCH, and may be assumed to be the same sequence. For example, if the transform precoder is not valid in the UE (for example, the transform precoder for PUSCH is invalid), the PTRS sequence for PUCCH may use the same sequence as the DMRS for PUCCH instead of the DMRS for PUSCH.

[0079] Regarding the pseudo-random sequence c(i) used in generating the PTRS sequence for PUCCH, the pseudo-random sequence generator may be, for example, c(i) as shown in the following formula 1 or formula 2: init Equation 1 or Equation 2 may also be used to derive the PTRS sequence for PUCCH when, for example, the transform precoder for PUSCH is valid or invalid.

[0080] (Formula 1)c init =(2 17 (N symb slot n s，f μ +l+1)(2N ID +1)+N ID )mod2 31

[0081] (Formula 2)c init =(2 17 (N symb slot n s，f μ +l+1)(2N ID +1)+N ID +n SCID )mod 2 31

[0082] Here, N symb slot It can also be the number of symbols per time slot (e.g., 14). l (letter l) can also be the time slot n s，f μ The minimum OFDM symbol number of the PUCCH in (for example, the starting symbol number of the PUCCH).

[0083] N IDAt least one of the following is given: a high-level parameter related to the scrambling ID of the DMRS used for PUCCH (e.g., nPUCCH-Identity), a high-level parameter related to the scrambling ID of the DMRS used for PUSCH when the transform precoder of PUSCH is valid (e.g., nPUSCH-Identity), a high-level parameter related to the scrambling ID of the DMRS used for PUSCH when the transform precoder of PUSCH is invalid (e.g., scramblingID0, scramblingID1), a high-level parameter related to the scrambling ID of the DMRS used for PDSCH (e.g., scramblingID0, scramblingID1), etc.

[0084] n SCID This can be done through higher layer signaling (e.g., n SCID The DMRS initialization field can be set by the relevant high-level parameter "dmrs-SeqInitialization" or dynamically specified by the field of the DCI that schedules the PUCCH (e.g., the DMRS initialization field). SCID For example, it can take values from 0 to a specific number (for example, 1).

[0085] In addition, for these high-layer parameters, even if they have the same parameter names as PTRS for PUSCH, DMRS for PUSCH, etc., the parameters of PTRS for PUCCH (for example, scramblingID0, scramblingID1, dmrs-SeqInitialization, etc.) can be set separately from them.

[0086] When a series is generated in this way, it can be expected that the implementation of the UE will be facilitated, and the increase in the UE load and the UE manufacturing cost can be reduced.

[0087] The UE may also generate a sequence of PTRS for PUCCH based on at least one of the following parameters:

[0088] Orthogonal sequence w i (m),

[0089] Expansion rate (spreading factor),

[0090] The length of the PUCCH (e.g., number of symbols),

[0091] Amplitude scaling factor β PUCCH 、

[0092] First scrambling ID (scramblingID0),

[0093] Second scrambling ID (scramblingID1),

[0094] The timeslot number n within the radio frame s，f μ 、

[0095] · Cyclic shift α,

[0096] Cell ID,

[0097] PUCCH mapping type,

[0098] DMRS configuration for PUSCH mapping type A (DMRS-UplinkConfig indicated by dmrs-UplinkForPUSCH-MappingTypeA),

[0099] DMRS configuration for PUSCH of mapping type B (DMRS-UplinkConfig indicated by dmrs-UplinkForPUSCH-MappingTypeB).

[0100] In addition, these parameters may be parameters of the PTRS for PUCCH, or parameters of other signals / channels (for example, parameters of the DMRS for PUCCH, parameters of the DMRS for PUSCH).

[0101] For example, regarding PF2, the reference signal series r l (m) can also be expressed by the following formula 3.

[0102] (Formula 3)r l (m)=1 / √2(1-2c(2m))+j / √2(1-2c(2m+1)), m=0, 1,…

[0103] In addition, for the pseudo-random series c(i) of formula 3, the generator of the pseudo-random series can also be obtained by the following formula 4: init and is initialized.

[0104] (Formula 4)c init =(2 17 (N symb slot n s，f μ +l+1)(2N ID 0 +1)+N ID 0 )mod2 31

[0105] Here, N ID 0 It can be scramblingID0 included in DMRS-UplinkConfig or scramblingID0 included in PUCCH setting (PUCCH-Config).

[0106] When the sequence is generated in this way, it is expected that the performance of PTRS for PUCCH can be optimized.

[0107] [Mapping of PTRS for PUCCH]

[0108] The following describes resources to which the PTRS for PUCCH is mapped. In the present disclosure, (k, l) may also mean a resource element with a subcarrier index k and a symbol index l (the letter L) within a resource block.

[0109] Frequency Domain Mapping

[0110] In the frequency domain, the PTRS used for the PUCCH may also be mapped to specific subcarriers included in the full PRB of the symbol transmitting the UCI.

[0111] For example, for PF1, the UE may also map the PTRS for the PUCCH to (k, l) of a specific subcarrier index (eg, k=0).

[0112] For PF3 / 4, the UE may also map the PTRS for the PUCCH to (k, l) of k=4n (n=0, 1, ...).

[0113] In addition, the PTRS used for PUCCH can also be mapped to consecutive subcarriers, for example, for PF1, it is mapped to k=0 and k=1 (k, l), and for PF3 / 4, it is mapped to k=4n and k=4n+1 (n=0, 1, ...) (k, l).

[0114] In the frequency domain, the PTRS for the PUCCH may be mapped to a specific subcarrier included in a PRB that is part of a symbol transmitting UCI.

[0115] The frequency density of PTRS for PUCCH can also be predetermined by the specification. For example, when the density is one of two resource blocks, the UE can also map the PTRS for PUCCH to k=4n+2iN. sc RB (n=0, 1, ....i=0, 1, ...) (k, l). Here, N sc RBIt can also be the number of subcarriers per resource block (e.g., 12). The index k can also be the number of resource blocks used for PUCCH transmission set to N. RB In the case of RB The resource blocks contain N subcarriers sc RB N RB The index corresponding to the subcarrier (0 above N sc RB N R B-1 the following).

[0116] The frequency density of the PTRS for PUCCH can also be determined based on higher layer parameters. For example, the higher layer parameter K related to the frequency density is PTRS When set, the UE can also map the PTRS for PUCCH to k=4n+K PTRS *i*N sc RB (n=0, 1, .... i=0, 1, ...) (k, l). The index k may also be an index that spans multiple resource blocks as described above (0 or more N sc RB N RB -1 or less).

[0117] The frequency density of the PTRS for PUCCH can also be determined based on the number of modulations (or modulation scheme) of the PUCCH. For example, when the PUCCH bits are modulated by QPSK, the UE maps the PTRS for PUCCH to k=2n+2iN. sc RB (n=0, 1, .... i=0, 1, ...) (k, l), when the PUCCH bits are modulated by π / 2-BPSK, the UE maps the PTRS for PUCCH to k=4n+2iN sc RB (n=0, 1, .... i=0, 1, ...) (k, l). The index k can also be an index across multiple resource blocks De (0 or more N sc RB N RB -1 or less).

[0118] In addition, the PTRS used for PUCCH can also be mapped to consecutive subcarriers, for example, mapped to k=4n+KPTRS*i*N sc RB And k = 4n + 1 + K PTRS *i*N sc RB (n=0, 1, ….i=0, 1, …) (k, l).

[0119] In the formula for finding the subcarrier index k to which the PTRS for PUCCH is mapped, the RE level offset k can also be applied. ref RE and the RB level offset k ref RB For example, the frequency density of the PTRS used in the PUCCH is determined by the high-level parameter K PTRS In the case of the decision, the UE can also map the PTRS for PUCCH to k=4n+k ref RE +(k ref RB +K PTRS (k, l) of *i) *Nsc RB (n=0, 1, .... i=0, 1, ...). k ref RB It can be determined by high-level parameters and can also be used to indicate the scrambled RNTI and K of the DCI sent by the PUCCH. PTRS and the number of RBs for the PUCCH, and may be the same value as that for the PTRS for the PUSCH. ref RE It can be determined by higher layer parameters or by the DMRS port associated with the PTRS used for the PUCCH.

[0120] <<Mapping in the Time Domain>>

[0121] In the time domain, the PTRS used for PUCCH can also be mapped to all codewords transmitting UCI.

[0122] For PF1, the UE may map the PTRS for the PUCCH to, for example, a symbol to which the UCI is mapped, or may map it to (k, l) where l=2i+1 (i=0, 1, ...).

[0123] For PF3 / 4, the UE can also map the PTRS used for PUCCH to codewords that are not mapped to DMRS. For example, in the case of PF3 / 4 where 14 codewords are sent without additional DMRS, they are mapped to (k, l) of l=0, 1, 2, 4, 5, 6, 7, 8, 9, 11, 12, 13.

[0124] In the time domain, the PTRS used for the PUCCH can also be mapped to the codeword that transmits a part of the UCI.

[0125] The time-domain density of the PTRS for PUCCH can also be predetermined by the specification. For example, if the density is one in four symbols, the UE can map the PTRS for PUCCH to (k, l) with l=4i+1 (i=0, 1, ...) for PF1, and to l=1, 5, 8, 12 for PF3 / 4.

[0126] The density of the PTRS in the time direction for PUCCH can also be determined based on higher layer parameters. For example, the higher layer parameter L related to the density in the time direction is PTRS When set, the UE can also map the PTRS for PUCCH to l=L PTRS *(k, l) of i+1 (i=0, 1, ...). In addition, L PTRS It may also be replaced with, for example, 14 [symbols] / PUCCH, and the density of the PTRS in the time direction [symbols / symbol], which may also be set through higher layer signaling.

[0127] The time-domain density of the PTRS for the PUCCH may also be determined based on the number of modulations (or modulation scheme) of the PUCCH. For example, the UE may map the PTRS for the PUCCH to (k, l) where l = 2i + 1 (i = 0, 1, ...) when the PUCCH bits are modulated by QPSK, or to (k, l) where l = 4i + 1 (i = 0, 1, ...) when the PUCCH bits are modulated by π / 2-BPSK.

[0128] In the formula for finding the symbol index l to which the PTRS for the PUCCH is mapped, an offset l may also be applied. ref For example, the density of the PTRS in the time direction for PUCCH is based on the high-level parameter L PTRS If it is determined that the UE can also map the PTRS for PUCCH to l=l ref +L PTRS *(k, l) of i+1 (i=0, 1, ...).

[0129] <<Duplication between UCI and PTRS>>

[0130] In the area (resource) where the UCI is mapped, the UE may not transmit the PTRS for the PUCCH (or may puncture the PTRS for the PUCCH).

[0131] Alternatively, in the area (resource) where the PTRS is mapped, the UE may also truncate or rate-match the UCI (PUCCH).

[0132] In addition, when UCI is truncated or rate-matched for PTRS, a shorter sequence length (e.g., a sequence length less than 12) can also be applied to PFs such as PF1 that use a base sequence in the representation of UCI.

[0133] According to the first embodiment described above, the PTRS for the PUCCH can be appropriately generated, mapped, and transmitted, thereby improving the reception quality of the PUCCH.

[0134] <Second embodiment>

[0135] The second embodiment relates to PUCCH resource determination when introducing the PTRS for PUCCH described in the first embodiment.

[0136] PUCCH resources can also be determined without considering the PTRS used for PUCCH. In this case, the actual PUCCH coding rate can also exceed the coding rate r set by higher layer signaling (for example, for higher layer parameters "maxCodeRate" = 0-7, r = 0.08-0.80 respectively).

[0137] PUCCH resources may be determined in consideration of the PTRS for PUCCH.

[0138] For example, the UE may also allocate resources for PTRS from N SC，ctrl RB Here, N SC，ctrl RB This is the value used to determine the amount of PUCCH resources, and in Rel-15 NR it is as follows:

[0139] N SC，ctrl RB =N sc RB -4 (PF2),

[0140] N SC，ctrl RB =N sc RB (In the case of PF3),

[0141] N SC，ctrl RB =N sc RB / N SF PUCCH4 (In the case of PF4).

[0142] Considering the PTRS for PUCCH, the UE can also use the following formula to calculate N SC , ctrlRB :

[0143] N SC，ctrl RB =N sc RB -4-M (PF2),

[0144] N SC，ctrl RB =N sc RB -M(PF3),

[0145] N SC，ctrl RB =(N sc RB -M) / N SF PUCCH4 (In the case of PF4).

[0146] Here, M may also be the average number of REs for the PTRS used for the PUCCH in at least one of the full symbol containing UCI, the full PRB containing UCI, or the full symbol containing UCI and the full PRB. In addition, M may be predetermined by the specification or given by a high-level parameter (e.g., a parameter corresponding to the approximate value of the above-mentioned average number of REs). In addition, M may also be a different value depending on the PF. N SF PUCCH4 It can be the expansion rate of PF4, for example, it can also be N SF PUCCH4 =2 or 4.

[0147] The UE may also calculate N by considering the PTRS for PUCCH. SC，ctrl RB The formula for determining PUCCH resources in Rel-15NR (for example, comparing SC，ctrl RB The PUCCH resource amount is calculated using the formula (the bit size of PUCCH resource transmission and the total bit size of UCI, which can be obtained by the coding rate r, PUCCH resource amount, etc.) to determine the PUCCH resource amount.

[0148] For example, in the UE by including M RB PUCCH PRB(M RB PUCCH For example, a PUCCH of size 0 is sent in a PUCCH resource (given by the higher layer parameter "nrofPRBs"). ACK HARQ-ACK information bits and size O CRCIn the case of Cyclic Redundancy Check (CRC) bits, the UE can also determine M RB PUCCH The following is the minimum number of PRBs M that satisfies the following equations 5 and 6: RB，min PUCCH UE can also use M RB，min PUCCH PUCCH resources are used to send UCI (HARQ-ACK).

[0149] (Formula 5) ACK +O CRC )≤M RB，min PUCCH ·N SC，ctrl RB ·N symb-UCI Q m ·r

[0150] (Formula 6) ifM RB PUCCH >1, (O ACK +O CRC )>(M RB，min PUCCH -1)·N SC，ctrl RB ·N symb-UCI Q m ·r

[0151] In addition, in (O ACK +O CRC )>(M RB PUCCH -1)·N SC，ctrl RB ·N symb-UCI Q m In the case of r, UE can also use M RB PUCCH PUCCH resources are used to send UCI (HARQ-ACK).

[0152] In addition, Q m It can also be the number of modulation times of PUCCH (for example, 2, 4, 6, etc.), and r can also be the coding rate. symb-UCI N is a parameter representing the number of symbols of UCI symb-UCI (also known as N symb-UCI PUCCH ), or it can be based on the value of the high-level parameter "nrofSymbols".

[0153] The parameters in this disclosure sometimes omit the superscript " PUCCH ”, and sometimes with a superscript “ PUCCH", it can also be assumed that both mean the same thing.

[0154] In addition, the PUCCH resource amount may be determined using both (disregard) parameters that do not take into account the PTRS for the PUCCH and parameters that take into account the PTRS for the PUCCH.

[0155] For example, N SC，ctrl RB It can indicate that the parameters of PTRS for PUCCH are not considered (the same parameters as Rel-15NR), N SC，ctrl-PTRS RB The parameters of PTRS used in consideration of PUCCH can be expressed as follows:

[0156] N SC，ctrl RB =N sc RB -4 (PF2),

[0157] N SC，ctrl RB =N sc RB (In the case of PF3),

[0158] N SC，ctrl RB =N sc RB / N SF PUCCH4 (In the case of PF4),

[0159] N SC，ctrl-PTRS RB =N sc RB -4-M (PF2),

[0160] N SC，ctrl-PTRS RB =N sc RB -M(PF3),

[0161] N SC，ctrl-PTRS RB =(N sc RB -M) / N SF PUCCH4 (In the case of PF4).

[0162] N SC，ctrl RB It may also correspond to the number of subcarriers used for UCI in the symbol not including the PTRS for PUCCH, N SC，ctrl-PTRS RBIt may also correspond to the number of subcarriers used for UCI in the symbol including the PTRS for PUCCH.

[0163] Since each parameter has already been described, a repeated description will not be given.

[0164] Parameter N indicating the number of UCI symbols symb-UCI (N symb-UCI PUCCH ) can also be achieved through N symb-UCI =N is represented by the symbol number parameter (nrofSymbols) set by the upper layer - N (here, N can also be the number of symbols including PTRS). In addition, in the case of PF including DMRS, N can also be used. symb-UCI = expressed by the symbol number parameter (nrofSymbols) set by the higher layer - (the number of symbols including DMRS) - N.

[0165] Parameter N indicating the number of PTRS symbols used for PUCCH symb-UCI-PTRS You can also use N symb-UCI-PTRS =Indicated by N.

[0166] N symb-UCI It can also correspond to the number of symbols that do not include the PTRS for PUCCH in the time slot, N symb-UCI-PTRS It may also correspond to the number of symbols including the PTRS for the PUCCH within the slot.

[0167] Figure 3 This diagram shows an example of PTRS parameters without PUCCH considerations and parameters that take PUCCH considerations into account. This example is for PF3 and is provided for convenience, assuming the absence of DMRS. While only one resource block of time-frequency resources is shown, multiple resource blocks can also be used. The mapping of PTRS and UCI is merely an example.

[0168] exist Figure 3 In the example, N SC，ctrl RB =12, N SC，ctrl-PTRS RB =8, N symb-UCI =10, N symb-UCI-PTRS =4.

[0169] N SC，ctrl RB *N symb-UCI +N SC，ctrl-PTRS RB *N symb-UCI-PTRSCorresponds to the number of REs used for UCI in 1 resource block, excluding PTRS. Therefore, the UE can also determine the N based on the formula to be used for the PUCCH resources of Rel-15 NR. SC，ctrl RB *N symb-UCI Replace with (N SC，ctrl RB *N symb-UCI +N SC，ctrl-PTRS RB *N symb-UCI-PTRS ), to calculate the amount of PUCCH resources.

[0170] For example, in the UE by including M RB PUCCH The PUCCH in the PUCCH resources of PRBs is used to send the size O ACK HARQ-ACK information bits and size O CRC In the case of the CRC bit, the UE is RB PUCCH Next, the UE may also determine the minimum number of PRBs M that satisfies the following equations 7 and 8: RB，min PUCCH UE can also use M RB，min PUCCH PUCCH resources are used to send UCI (HARQ-ACK).

[0171] (Formula 7) ACK +O CRC )≤M RB，min PUCCH ·(N SC，ctrl RB *N symb-UCI +N SC，ctrl-PTRS RB *N symb-UCI-PTRS )·Q m ·r

[0172] (Equation 8) ifM RB PUCCH >1, (O ACK +O CRC )>(M RB，min PUCCH -1)·(N SC，ctrl RB *N symb-UCI +N SC，ctrl-PTRS RB *N symb-UCI-PTRS )·Q m ·r

[0173] In addition, in (O ACK +O CRC )>(M RBPUCCH -1)·(N SC，ctrl RB *N symb-UCI +N SC，ctrl-PTRS RB *N symb-UCI-PTRS )·Q m In the case of r, UE can also use M RB PUCCH PUCCH resources are used to send UCI (HARQ-ACK).

[0174] According to the second embodiment described above, even when PTRS for PUCCH is introduced, the UE can appropriately determine PUCCH resources.

[0175] <Third embodiment>

[0176] The third embodiment relates to the determination of whether the PTRS for the PUCCH described in the first embodiment is included in the PUCCH (whether it exists or not).

[0177] The UE can also configure the presence or absence of PTRS for PUCCH through higher layer signaling.

[0178] The presence or absence of PTRS for PUCCH may be configured for each UE or each UE group.

[0179] The presence or absence of PTRS for PUCCH may be configured for each PUCCH format. For example, a certain PUCCH format may include PTRS, while another PUCCH format may not include PTRS.

[0180] The presence or absence of a PTRS for PUCCH may be configured for each PUCCH resource. The presence or absence of a PTRS for PUCCH may be configured for each PUCCH resource set.

[0181] The UE may also assume that the presence of a PTRS for PUCCH is the same as the presence of a PTRS for at least one of PUSCH and PDSCH. In other words, the UE may also determine the presence of a PTRS for PUCCH based on the PTRS configuration for at least one of PUSCH and PDSCH.

[0182] In addition, “for each XX” can also be replaced by “associated with XX”, “unique to XX”, etc.

[0183] Even if it is not configured through higher layer signaling, the UE may also include the PTRS for the PUCCH in the PUCCH. For example, a UE supporting NRs after Rel-16 may also include the PTRS for the PUCCH in the PUCCH.

[0184] The presence or absence of a PTRS for a PUCCH may also depend on the PTRS of at least one of the PDCCH corresponding to the PUCCH, the PDSCH corresponding to the PUCCH, and the PUSCH (or any PUSCH) corresponding to the PUCCH. For example, the UE may also determine the presence or absence of a PTRS for a PUCCH based on the PDCCH corresponding to the PUCCH (the PDCCH on which the DCI scheduling the PUCCH is received), the PDSCH corresponding to the PUCCH, and the like (for example, if a PTRS exists in either or both of the PDCCH and PDSCH, the PTRS is also included in the PUCCH).

[0185] The presence or absence of a PTRS for a PUCCH may also depend on the frequency domain (e.g., the location of frequency resources, the frequency range to which they belong, etc.) of at least one of the PUCCH, the PDCCH corresponding to the PUCCH, the PDSCH corresponding to the PUCCH, and the PUSCH (or any PUSCH) corresponding to the PUCCH. For example, when the PUCCH is transmitted in FR4, it may be assumed that the PTRS for the PUCCH is included in the PUCCH.

[0186] According to the third embodiment described above, even when the PTRS for PUCCH is introduced, flexible control such as not including the PTRS for PUCCH when the PTRS is not necessary can be performed.

[0187] <Other>

[0188] In this specification, the case of a high frequency domain (e.g., FR4), the case of a specific cell (e.g., a primary cell (PCell) or a PUCCH-Secondary Cell (SCell)) being set to FR4, the case of a specific subcarrier spacing, and the case of a specific subcarrier spacing being set in a specific cell can be interchanged. For the PUCCH transmitted by any of these specific cells, the UE can also assume that the PTRS for the PUCCH is included.

[0189] Furthermore, the specific subcarrier spacing may be a subcarrier spacing larger than a specific value (e.g., 120 kHz), or a subcarrier spacing in which the parameter μ corresponding to the parameter set is larger than a specific value (e.g., 3).

[0190] FR4 can also be divided into multiple parts (for example, sub-frequency ranges, or sub-FRs). For example, the above method (for example, a structure different from Rel.15, PTRS for PUCCH, etc.) can also be applied to sub-band domains exceeding a specific frequency (for example, 52.6 GHz). Alternatively, the above method (for example, a structure different from Rel.15, a structure in which PTRS for PUCCH is included in PUCCH, etc.) is applied to a portion of sub-band domains exceeding a specific frequency (for example, 52.6 GHz), and the same structure as the existing system (for example, Rel.15) is applied to other sub-band domains (for example, a structure in which PTRS for PUCCH is not included in PUCCH).

[0191] (Wireless Communication System)

[0192] The following describes the 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.

[0193] Figure 4 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).

[0194] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). 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.

[0195] 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.

[0196] 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 the MN and the SN are NR base stations (gNB)).

[0197] 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. Hereinafter, when not distinguishing between base stations 11 and 12, they are collectively referred to as base stations 10.

[0198] 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).

[0199] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (sub-6 GHz), and FR2 may be a frequency band higher than 24 GHz (above-24 GHz). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may also correspond to a frequency band higher than FR2.

[0200] Furthermore, the user terminal 20 may perform communication using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0201] Multiple base stations 10 can also be connected by wired (for example, optical fiber compliant with the Common Public Radio Interface (CPRI), X2 interface, etc.) or wireless (for example, NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station can also be called an integrated access backhaul link (Integrated Access Backhaul (IAB)) host, and the base station 12 equivalent to the relay station (relay) can also be called an IAB node.

[0202] 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).

[0203] The user terminal 20 may also be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0204] 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.

[0205] 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 used as the radio access schemes for UL and DL.

[0206] 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.

[0207] 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.

[0208] User data, higher-layer control information, and system information blocks (SIBs) are transmitted via the PDSCH. User data, higher-layer control information, and the like can also be transmitted via the PUSCH. Furthermore, the Master Information Block (MIB) can also be transmitted via the PBCH.

[0209] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may also include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information for at least one of the PDSCH and the PUSCH.

[0210] 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, PDSCH may also be replaced by DL data, and PUSCH may also be replaced by UL data.

[0211] 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.

[0212] A search space may also correspond to PDCCH candidates corresponding to 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.

[0213] 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 confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted via the PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted via the PRACH.

[0214] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Furthermore, various channels may be expressed without adding "Physical" at the beginning.

[0215] In wireless communication system 1, synchronization signals (Synchronization Signal (SS)), downlink reference signals (Downlink Reference Signal (DL-RS)), etc. can also be transmitted. In wireless communication system 1, as DL-RS, cell-specific reference signals (Cell-specific Reference Signal (CRS)), channel state information reference signals (Channel State Information Reference Signal (CSI-RS)), demodulation reference signals (DeModulation Reference Signal (DMRS)), positioning reference signals (Positioning Reference Signal (PRS)), phase tracking reference signals (Phase Tracking Reference Signal (PTRS)), etc. can also be transmitted.

[0216] The synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). A signal block containing SSs (PSS, SSS) and PBCH (and DMRS for PBCH) may also be referred to as an SS / PBCH block, SS Block (SSB), etc. Furthermore, SSs and SSBs may also be referred to as reference signals.

[0217] In addition, in wireless communication system 1, an uplink reference signal (UL-RS), a 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).

[0218] (Base Station)

[0219] Figure 5 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 transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission line interface 140. Furthermore, more than one of each of the control unit 110, the transmitting / receiving unit 120, the transmitting / receiving antenna 130, and the transmission line interface 140 may be provided.

[0220] In this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, but 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 also be omitted.

[0221] 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 common knowledge in the technical field to which this disclosure relates.

[0222] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission, reception, measurement, etc. using the transceiver unit 120, the transceiver antenna 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 transceiver 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.

[0223] 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, a measurement circuit, a transceiver circuit, and the like, which are described based on common knowledge in the technical fields involved in this disclosure.

[0224] 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.

[0225] The transmitting and receiving antenna 130 can be formed of an antenna described based on common knowledge in the technical field to which this disclosure relates, such as an array antenna.

[0226] 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.

[0227] The transmitting and receiving unit 120 may also form at least one of a transmitting beam and a receiving beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.

[0228] 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.

[0229] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, 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 to output a baseband signal.

[0230] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, 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 .

[0231] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, and demodulation into a baseband signal on the radio frequency band signal received by the transmitting and receiving antenna 130 .

[0232] 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), filter 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.

[0233] 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.

[0234] The transmission path interface 140 can also send and receive signals (backhaul signaling) between devices included in the core network 30 and other base stations 10, etc., and obtain and transmit user data (user plane data) and control plane data for the user terminal 20.

[0235] In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 120 , the transmitting and receiving antenna 130 , and the transmission path interface 140 .

[0236] In addition, the control unit 110 may also receive a Phase Tracking Reference Signal (PTRS) for the uplink control channel (PUCCH) from the user terminal 20. The control unit 110 may also reduce (correct) the phase noise of the PUCCH based on the PTRS.

[0237] (User Terminal)

[0238] Figure 6 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, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may each be provided in one or more units.

[0239] In addition, in this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and the user terminal 20 may also be assumed to have other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0240] 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 common knowledge in the technical field to which this disclosure relates.

[0241] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission, reception, measurement, etc. using the transmitting and receiving unit 220 and the transmitting and receiving antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals and forward them to the transmitting and receiving unit 220.

[0242] 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 common knowledge in the technical fields involved in this disclosure.

[0243] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit or may be composed of a transmitting unit and a receiving unit. The transmitting unit may also be composed of a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0244] The transmitting and receiving antenna 230 can be formed of an antenna described based on common knowledge in the technical field involved in the present disclosure, such as an array antenna.

[0245] 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.

[0246] The transmitting and receiving unit 220 may form at least one of a transmitting beam and a receiving beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.

[0247] 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 and control information obtained from the control unit 210 to generate a bit string to be sent.

[0248] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent to output a baseband signal.

[0249] In addition, whether or not to apply DFT processing may also be based on the transform precoding setting. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transmitting / receiving unit 220 (transmitting processing unit 2211) may perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, DFT processing is not performed as the above-mentioned transmission processing.

[0250] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, 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 230 .

[0251] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may also perform amplification, filter processing, and demodulation into a baseband signal on the radio frequency band signal received by the transmitting and receiving antenna 230 .

[0252] The transmitting and receiving unit 220 (receiving processing unit 2212) can also apply receiving processing such as analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter 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.

[0253] 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.

[0254] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0255] In addition, the control unit 210 may also determine uplink control channel resources (PUCCH resources) by considering the Phase Tracking Reference Signal (PTRS) for the uplink control channel (PUCCH). This determination of PUCCH resources may include determining the starting position of the PUCCH resources and the amount of PUCCH resources (e.g., the number of resource blocks used for UCI transmission).

[0256] The control unit 210 may determine the PUCCH resources without considering the PTRS.

[0257] The transmitting and receiving unit 220 may also use the determined uplink control channel resources to transmit uplink control information (UCI). The transmitting and receiving unit 220 may also transmit the PTRS.

[0258] The control unit 210 may also determine the uplink control channel resources based on the number of resource elements used for mapping uplink control information in addition to the PTRS. The number of resource elements may also be determined by N as described in the second embodiment. SC，ctrl RB *N symb-UCI +N SC，ctrl-PTRS RB *N symb-UCI-PTRS Be sought out.

[0259] (Hardware Structure)

[0260] In addition, the block diagrams used for the description of the above-mentioned embodiments represent 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 using a device that is physically or logically combined, or two or more devices that are physically or logically separated can be directly or indirectly (for example, using wired, wireless, etc.) connected and implemented using these multiple devices. The functional block can also be implemented by combining software in the above-mentioned one device or the above-mentioned multiple devices.

[0261] Here, the term "function" includes, but is not limited to, judging, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, considering, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. For example, a functional block (structural unit) that performs a transmitting function may also be referred to as a transmitting unit, a transmitter, or the like. As described above, the implementation method is not particularly limited.

[0262] 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 7 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 may 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.

[0263] In addition, in this disclosure, the terms "apparatus," "circuit," "device," "section," and "unit" are interchangeable. The hardware structure of the base station 10 and the user terminal 20 may include one or more of the illustrated devices, or may exclude some of the devices.

[0264] For example, only one processor 1001 is shown, but multiple processors may be provided. Furthermore, a process may be performed by a single processor, or by two or more processors simultaneously, sequentially, or using other methods. Furthermore, the processor 1001 may be implemented using one or more chips.

[0265] The various functions in the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations, controls the 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.

[0266] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be configured as a central processing unit (CPU) including interfaces with peripheral devices, a control device, a computing device, registers, and the like. For example, at least a portion of the aforementioned control unit 110 (210) and the transceiver unit 120 (220) may also be implemented by the processor 1001.

[0267] In addition, the processor 1001 reads programs (program code), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and performs various processes according to them. As a program, a program that causes the computer to execute at least a part of the operations described in the above-mentioned embodiments is 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 same can be achieved for other functional blocks.

[0268] The memory 1002 is a computer-readable recording medium and may be composed of, for example, at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically EPROM (EEPROM), a random access memory (RAM), or other appropriate storage media. 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 an embodiment of the present disclosure.

[0269] The storage 1003 is a computer-readable recording medium and may be composed of, for example, at least one of a floppy disk, a floppy (registered trademark) disk, an optical disk (e.g., a compact disk (Compact Disc ROM (CD-ROM)), etc.), a digital versatile disk, a Blu-ray (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, and other appropriate storage media. The storage 1003 may also be referred to as an auxiliary storage device.

[0270] The communication device 1004 is hardware (a transmitting and receiving device) used to communicate 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, etc. The communication device 1004 may also include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., for example, to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the aforementioned transmitting and receiving unit 120 (220), transmitting and receiving antenna 130 (230), etc. may also be implemented by the communication device 1004. The transmitting and receiving unit 120 (220) may also be implemented so that the transmitting unit 120a (220a) and the receiving unit 120b (220b) are physically or logically separated.

[0271] 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).

[0272] Furthermore, the processor 1001, memory 1002, and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured using a single bus or different buses between the devices.

[0273] Furthermore, the base station 10 and the 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), and may use such hardware to implement part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware components.

[0274] (Variation)

[0275] 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, code element, and signal (signal or signaling) may also be replaced with each other. In addition, a signal may also be a message. A reference signal may also be abbreviated 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.

[0276] 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 (for example, 1ms) that is independent of the parameter set (numerology).

[0277] Here, a parameter set may also be a communication parameter applied to at least one of the transmission and reception of a signal or channel. For example, the parameter set may also indicate at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), 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, etc.

[0278] 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.

[0279] 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.

[0280] Radio frames, subframes, time slots, mini-slots, and symbols all represent time units used for signal transmission. Radio frames, subframes, time slots, mini-slots, and symbols may also be referred to by their respective names. Furthermore, the terms frame, subframe, time slot, mini-slot, and symbol may be used interchangeably in this disclosure.

[0281] For example, a subframe can be called a TTI, multiple consecutive subframes can be called a TTI, and a time slot or a mini-time slot can be called a TTI. In other words, at least one of a subframe and a 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. Furthermore, the unit representing a TTI can be called a time slot, a mini-time slot, or the like, rather than a subframe.

[0282] 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 available frequency bandwidth and transmit power) in TTI units. The definition of TTI is not limited to this.

[0283] The TTI can be a unit of time for transmitting data packets (transport blocks), code blocks, code words, etc. after channel coding, and can 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.

[0284] Furthermore, when one time slot or one 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) can also be the minimum time unit for scheduling. Furthermore, the number of time slots (mini-time slots) that constitute this minimum time unit for scheduling can also be controlled.

[0285] 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 normal TTI, a long TTI, a normal subframe, a normal 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.

[0286] In addition, long TTI (for example, normal TTI, subframe, etc.) can also be replaced by TTI with a time length exceeding 1ms, and short TTI (for example, shortened TTI, etc.) can also be replaced by TTI with a TTI length smaller than long TTI and longer than 1ms.

[0287] A resource block (RB) is a resource allocation unit in the time and frequency domains and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in an RB may also be the same regardless of the parameter set, for example, it may be 12. The number of subcarriers included in an RB may also be determined based on the parameter set.

[0288] In addition, an RB may also include one or more symbols in the time domain, and may be the length of one slot, one mini-slot, one subframe, or one TTI. One TTI, one subframe, etc. may also be composed of one or more resource blocks.

[0289] 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.

[0290] 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.

[0291] 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 numerology within a carrier. Common RBs can also be identified by their index relative to the common reference point for that carrier. PRBs can also be defined by a BWP and assigned a sequence number within that BWP.

[0292] 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.

[0293] 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 replaced with "BWP".

[0294] The structures of radio frames, subframes, slots, mini-slots, and symbols described above are merely examples. For example, 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 can be varied in various ways.

[0295] Furthermore, information and parameters described in this disclosure may be expressed using absolute values, relative values relative to a specific value, or other corresponding information. For example, wireless resources may be indicated by specific indexes.

[0296] The names used for parameters, etc. in this disclosure are not intended to be limiting in any way. Furthermore, the formulas and the like using these parameters 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 names assigned to these channels and information elements are not intended to be limiting in any way.

[0297] 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 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.

[0298] Furthermore, information, signals, etc. can be output from at least one of a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0299] 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.

[0300] The notification of information is not limited to the methods / implementations described in the present disclosure, and other methods may also be used. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (DCI), 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.

[0301] 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.

[0302] 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).

[0303] The judgment can be made by a value represented by 1 bit (0 or 1), a true or false value (Boolean value) represented by true (true) or false (false), or by comparing numerical values (for example, comparison with a specific value).

[0304] Whether software is referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, it shall be interpreted broadly to mean instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or the like.

[0305] 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.

[0306] The terms "system" and "network" used in this disclosure are interchangeable. "Network" may also refer to devices included in the network (eg, base stations).

[0307] 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.

[0308] In this disclosure, terms such as “base station (BS)”, “wireless base station”, “base station device”, “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. A base station is also sometimes referred to as a macro cell, a small cell, a femto cell, or a pico cell.

[0309] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a part or the entire coverage area of at least one of the base station and the base station subsystem that provide communication services within the coverage area.

[0310] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0311] A mobile station is also sometimes called a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand set, user agent, mobile client, client or some other appropriate terminology.

[0312] 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, the mobile object itself, etc. The mobile object may be a vehicle (e.g., a car, an airplane, 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 also includes a device that does not necessarily move during 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.

[0313] In addition, the base station in the present disclosure can also be replaced by 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, which can also be called device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the user terminal 20 has the functions of the above-mentioned base station 10. In addition, the language such as "uplink" and "downlink" can also be replaced by the language corresponding to the communication between terminals (for example, "side"). For example, the uplink channel, downlink channel, etc. can also be replaced by the side channel.

[0314] Likewise, the user terminal in the present disclosure may be replaced by a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0315] In this disclosure, operations performed by a base station may also be performed by its upper node depending on the situation. In a network including one or more network nodes including a base station, various operations performed for communication with a terminal can obviously be performed by the base station, one or more network nodes other than the base station (for example, but not limited to, a Mobility Management Entity (MME) and a Serving-Gateway (S-GW)), or a combination thereof.

[0316] The various methods / implementations described in this disclosure may be used individually, in combination, or switched as they are executed. Furthermore, the processing procedures, sequence, flow charts, and the like of the various methods / implementations described in this disclosure may be swapped in order, as long as there is no conflict. For example, the methods described in this disclosure use an illustrative order to present various step elements, and are not limited to the specific order presented.

[0317] The various methods / implementations described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER3G, 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), Bluetooth (registered trademark), systems utilizing other appropriate systems, and next-generation systems expanded upon these systems. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G, etc.) for application.

[0318] The phrase “based on” used in this disclosure does not mean “based only on” unless otherwise explicitly stated. In other words, the phrase “based on” means both “based only on” and “based at least on.”

[0319] 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 can be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and a second element does not imply that only two elements can be used or that the first element must precede the second element in some form.

[0320] As used in this disclosure, the term "determining" sometimes encompasses a variety of operations. For example, "determining" can also be considered as "judging," calculating, computing, processing, deriving, investigating, searching (e.g., searching a table, database, or other data structure), ascertaining, etc.

[0321] 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)”.

[0322] Furthermore, “judgment (decision)” can also include resolving, selecting, choosing, establishing, comparing, etc. In other words, “judgment (decision)” can also include certain operations as “judgment (decision)”.

[0323] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)”, etc.

[0324] The "maximum transmit power" recorded in this disclosure may mean the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated UE maximum transmit power).

[0325] As used in this disclosure, the terms "connected," "coupled," and any variations thereof mean any direct or indirect connection or coupling between two or more elements, including the presence of one or more intermediate elements between the two "connected" or "coupled" elements. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be replaced by "connected."

[0326] In the present disclosure, when connecting two elements, it is possible to consider using one or more wires, cables, printed electrical connections, etc., and as some non-limiting and non-inclusive examples, using electromagnetic energy with wavelengths in the wireless frequency domain, microwave domain, and light (visible light and invisible light) domain, the two elements are "connected" or "combined" with each other.

[0327] 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 in the same way as "different."

[0328] When the terms "include," "including," and variations thereof are used in this disclosure, these terms, like the term "comprising," are inclusive. Furthermore, the term "or" used in this disclosure does not mean exclusive or.

[0329] 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 the case where the noun following the article is in a plural form.

[0330] While the invention disclosed herein has been described in detail above, it will be apparent to those skilled in the art that the invention disclosed herein is not limited to the embodiments described herein. The invention 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 description herein is for illustrative purposes only and is not intended to limit the invention disclosed herein in any way.

Claims

1. A terminal, characterized in that: have: The control unit determines uplink control channel resources by considering the phase tracking reference signal (PTRS) used for the uplink control channel. as well as a sending unit, using the determined uplink control channel resources to send uplink control information (UCI), The control unit determines the uplink control channel resources for transmitting the PTRS and the UCI based on the number of resource elements including UCI other than the PTRS.

2. The terminal according to claim 1, wherein The control unit determines whether the PTRS exists based on high-layer signaling.

3. The terminal according to claim 1, wherein The control unit determines whether the PTRS exists based on whether the PTRS exists in at least one of a downlink control channel, a downlink shared channel, and an uplink shared channel corresponding to the uplink control channel. The terminal according to claim 1 , wherein: The control unit determines whether the PTRS exists based on a frequency domain of at least one of a downlink control channel, a downlink shared channel, and an uplink shared channel corresponding to the uplink control channel.

5. A wireless communication method, which is a wireless communication method of a terminal, characterized in that: have: Considering the Phase Tracking Reference Signal (PTRS) used for the uplink control channel, the steps for determining uplink control channel resources; The step of using the determined uplink control channel resources to transmit uplink control information (UCI); and The step of determining the uplink control channel resources for transmitting the PTRS and the UCI based on the number of resource elements including UCI in addition to the PTRS.

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