terminal

Abstract

To provide a terminal, a base station, a wireless communication system, and a wireless communication method for multiplexing uplink control information for an uplink shared channel.SOLUTION: In a wireless communication system, a terminal includes: a control unit that multiplexes uplink control information on an uplink shared channel; and a communication unit that transmits an uplink signal using the uplink shared channel on which the uplink control information is multiplexed. Therein the control unit multiplies the number of bits constituting the uplink control information by a factor In a rate matching of the uplink control information, and the control unit applies an extended range that includes at least one of a value smaller than a predetermined range and a value larger than the predetermined range as a range that the factor can be taken.SELECTED DRAWING: None

Description

[Technical Field]

[0001] This disclosure relates to a terminal that performs wireless communication, in particular to a terminal that performs multiplexing of uplink control information for an uplink sharing channel. [Background technology]

[0002] The 3rd Generation Partnership Project (3GPP) has standardized the 5th generation mobile communication system (also known as 5G, New Radio (NR), or Next Generation (NG)), and is also working on standardizing the next generation, known as Beyond 5G, 5G Evolution, or 6G.

[0003] 3GPP Release 15 supports the multiplexing of two or more uplink channels (PUCCH (Physical Uplink Control Channel) and PUSCH (Physical Uplink Shared Channel)) transmitted in the same slot.

[0004] Furthermore, in 3GPP Release 17, it was agreed to support multiplexing to UL SCH (Uplink Shared Channel), which has a different priority than UCI (Uplink Control Information) (see, for example, Non-Patent Document 1). [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] "Enhanced Industrial Internet of Things (IoT) and ultra-reliable and low latency communication", RP-201310, 3GPP TSG RAN Meeting #86e, 3GPP, July 2020 [Overview of the project]

[0006] Against this backdrop, the inventors, after diligent investigation, found that in the multiplexing of UCI for UL SCH, if the possible values ​​of the coefficient (e.g., β) used for rate matching remain within a predetermined range, it is not possible to properly perform UCI multiplexing for UL SCH.

[0007] Therefore, the following disclosure is made in light of these circumstances and aims to provide a terminal that can appropriately perform multiplexing of uplink control information for uplink shared channels.

[0008] One aspect of the present disclosure is a terminal comprising: a control unit that multiplexes uplink control information on an uplink shared channel; and a communication unit that transmits uplink signals using the uplink shared channel on which the uplink control information is multiplexed, wherein the control unit multiplies the number of bits constituting the uplink control information by a coefficient in rate matching of the uplink control information, and the control unit applies an extended range as the range that the coefficient can take, which includes at least one of a value smaller than a predetermined range and a value larger than the predetermined range. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a schematic diagram of the overall configuration of the wireless communication system 10. [Figure 2] Figure 2 shows the frequency range used in the wireless communication system 10. [Figure 3]FIG. 3 is a diagram showing a configuration example of radio frames, subframes and slots used in the radio communication system 10. [Figure 4] FIG. 4 is a functional block configuration diagram of UE 200. [Figure 5] FIG. 5 is a diagram for explaining rate matching. [Figure 6] FIG. 6 is a diagram for explaining rate matching. [Figure 7] FIG. 7 is a diagram for explaining rate matching. [Figure 8] FIG. 8 is a diagram showing an example of a possible range of a coefficient (β). [Figure 9] FIG. 9 is a diagram showing an example of a possible range of a coefficient (β). [Figure 10] FIG. 10 is a diagram showing an example of a possible range of a coefficient (β). [Figure 11] FIG. 11 is a diagram showing an example of a possible range of a coefficient (β). [Figure 12] FIG. 12 is a diagram showing an example of a possible range of a coefficient (β). [Figure 13] FIG. 13 is a diagram showing an example of a possible range of a coefficient (β). [Figure 14] FIG. 14 is a diagram showing an example of a possible range of a coefficient (β). [Figure 15] FIG. 15 is a diagram showing an example of an information element (in ASN.1 format) included in an RRC message. [Figure 16] FIG. 16 is a diagram showing an example of an information element (in ASN.1 format) included in an RRC message. [Figure 17] FIG. 17 is a diagram showing an example of an information element (in ASN.1 format) included in an RRC message. [Figure 18] FIG. 18 is a diagram showing an operation example. [Figure 19] FIG. 19 is a diagram showing an example of a hardware configuration of the UE 200. DESCRIPTION OF EMBODIMENTS

[0010] The embodiments will be described below with reference to the drawings. Note that identical or similar reference numerals are used to denote the same functions and components, and their descriptions will be omitted as appropriate.

[0011] [Embodiment] (1) Overall outline of the wireless communication system Figure 1 is a schematic diagram of the overall configuration of the wireless communication system 10 according to the embodiment. The wireless communication system 10 is a wireless communication system in accordance with 5G New Radio (NR) and includes a Next Generation-Radio Access Network 20 (hereinafter referred to as NG-RAN20) and a terminal 200 (hereinafter referred to as UE200).

[0012] The wireless communication system 10 may also be a wireless communication system that conforms to a method called Beyond 5G, 5G Evolution, or 6G.

[0013] NG-RAN20 includes radio base station 100A (hereinafter referred to as gNB100A) and radio base station 100B (hereinafter referred to as gNB100B). The specific configuration of the wireless communication system 10, including the number of gNBs and UEs, is not limited to the example shown in Figure 1.

[0014] NG-RAN20 actually includes multiple NG-RAN Nodes, specifically gNBs (or ng-eNBs), and is connected to a 5G-compliant core network (5GC, not shown). Note that NG-RAN20 and 5GC may also be simply referred to as the "network".

[0015] The gNB100A and gNB100B are 5G-compliant wireless base stations that perform 5G-compliant wireless communication with the UE200. The gNB100A, gNB100B, and UE200 can support Massive MIMO (Multiple-Input Multiple-Output), which generates a more directional beam BM by controlling the wireless signals transmitted from multiple antenna elements; carrier aggregation (CA), which uses multiple component carriers (CCs) bundled together; and dual connectivity (DC), which enables simultaneous communication between the UE and each of the two NG-RAN Nodes. DC may include MR-DC (Multi-RAT Dual Connectivity) using MCG (Master Cell Group) and SCG (Secondary Cell Group). Examples of MR-DC include EN-DC (E-UTRA-NR Dual Connectivity), NE-DC (NR-EUTRA Dual Connectivity), and NR-DC (NR-NR Dual Connectivity). Here, the CCs (cells) used in CA may be considered to constitute the same cell group. MCG and SCG can be considered to constitute the same cell group.

[0016] Furthermore, the wireless communication system 10 supports multiple frequency ranges (FR). Figure 2 shows the frequency ranges used in the wireless communication system 10.

[0017] As shown in Figure 2, the wireless communication system 10 corresponds to FR1 and FR2. The frequency bands of each FR are as follows:

[0018] • FR1: 410 MHz ~ 7.125 GHz • FR2: 24.25 GHz ~ 52.6 GHz In FR1, a Sub-Carrier Spacing (SCS) of 15, 30, or 60 kHz may be used, and a bandwidth (BW) of 5 to 100 MHz may be used. FR2 is a higher frequency than FR1, and a 60 or 120 kHz (240 kHz may be included) SCS may be used, and a bandwidth (BW) of 50 to 400 MHz may be used.

[0019] Note that SCS may also be interpreted as numerology. Numerology is defined in 3GPP TS38.300 and corresponds to a single subcarrier interval in the frequency domain.

[0020] Furthermore, the wireless communication system 10 also supports higher frequency bands than the FR2 frequency band. Specifically, the wireless communication system 10 supports frequency bands exceeding 52.6 GHz and up to 114.25 GHz. Such high frequency bands may be conveniently referred to as "FR2x".

[0021] To address these issues, when using bandwidths exceeding 52.6 GHz, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform-Spread (DFT-S-OFDM) with a larger Sub-Carrier Spacing (SCS) may be applied.

[0022] Figure 3 shows an example of the configuration of wireless frames, subframes, and slots used in the wireless communication system 10.

[0023] As shown in Figure 3, one slot consists of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and slot period). The SCS is not limited to the interval (frequency) shown in Figure 3. For example, 480 kHz, 960 kHz, etc., may be used.

[0024] Furthermore, the number of symbols constituting one slot does not necessarily have to be 14 (for example, 28 or 56 symbols). In addition, the number of slots per subframe may vary depending on the SCS.

[0025] The time direction (t) shown in Figure 3 may also be called the time domain, symbol period, or symbol time. The frequency direction may also be called the frequency domain, resource block, subcarrier, BWP (Bandwidth Part), etc.

[0026] (2) Functional block configuration of the wireless communication system Next, the functional block configuration of the wireless communication system 10 will be described. Specifically, the functional block configuration of UE200 will be described.

[0027] Figure 4 is a functional block diagram of the UE200. As shown in Figure 4, the UE200 comprises a wireless signal transmission / reception unit 210, an amplifier unit 220, a modulation / demodulation unit 230, a control signal / reference signal processing unit 240, an encoding / decoding unit 250, a data transmission / reception unit 260, and a control unit 270.

[0028] The wireless signal transceiver unit 210 transmits and receives wireless signals in accordance with NR. The wireless signal transceiver unit 210 supports Massive MIMO, CA which uses multiple CCs bundled together, and DC which communicates simultaneously between the UE and each of the two NG-RAN Nodes.

[0029] The amplifier section 220 consists of components such as a PA (Power Amplifier) ​​and an LNA (Low Noise Amplifier). The amplifier section 220 amplifies the signal output from the modulation / demodulation section 230 to a predetermined power level. The amplifier section 220 also amplifies the RF signal output from the wireless signal transmission / reception section 210.

[0030] The modulation / demodulation unit 230 performs data modulation / demodulation, transmit power setting, and resource block allocation for each predetermined communication destination (gNB100 or other gNB). The modulation / demodulation unit 230 may apply Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform - Spread (DFT-S-OFDM). Furthermore, DFT-S-OFDM may be used not only for the uplink (UL) but also for the downlink (DL).

[0031] The control signal / reference signal processing unit 240 performs processing related to various control signals transmitted and received by the UE200, and processing related to various reference signals transmitted and received by the UE200.

[0032] Specifically, the control signal / reference signal processing unit 240 receives various control signals transmitted from the gNB100 via a predetermined control channel, such as control signals for the radio resource control layer (RRC). The control signal / reference signal processing unit 240 also transmits various control signals to the gNB100 via a predetermined control channel.

[0033] The control signal / reference signal processing unit 240 performs processing using reference signals (RS) such as the Demodulation Reference Signal (DMRS) and the Phase Tracking Reference Signal (PTRS).

[0034] DMRS is a terminal-specific, known reference signal (pilot signal) between the base station and the terminal used to estimate the fading channel used for data demodulation. PTRS is a terminal-specific reference signal intended to estimate phase noise, which is a problem in the high-frequency band.

[0035] In addition to DMRS and PTRS, the reference signals may also include Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS), and Positioning Reference Signal (PRS) for location information.

[0036] Furthermore, channels include control channels and data channels. Control channels include PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel), Downlink Control Information (DCI) including Random Access Radio Network Temporary Identifier (RA-RNTI), and Physical Broadcast Channel (PBCH), among others.

[0037] Furthermore, data channels include PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel), among others. "Data" refers to data transmitted through a data channel. A data channel can also be interpreted as a shared channel.

[0038] In this embodiment, the control signal / reference signal processing unit 240 constitutes a communication unit that transmits uplink signals using an uplink shared channel (UL SCH) on which uplink control information (UCI (Uplink Control Information)) is multiplexed. The UL SCH is a transport channel multiplexed to PUSCH: Physical Uplink Shared Channel. The uplink signals transmitted via the UL SCH (PUSCH) may include UCI and may include data. The UCI may include acknowledgments (HARQ-ACK) for one or more TBs. The UCI may include a Scheduling Request (SR) requesting resource scheduling and may include Channel State Information (CSI) representing the channel state. The UCI may be transmitted via PUCCH or via PUSCH.

[0039] The encoding / decoding unit 250 performs data splitting / concatenation and channel coding / decoding for each predetermined communication destination (gNB100 or other gNB).

[0040] Specifically, the encoding / decoding unit 250 divides the data output from the data transmission / reception unit 260 into predetermined sizes and performs channel coding on the divided data. The encoding / decoding unit 250 also decodes the data output from the modulation / demodulation unit 230 and concatenates the decoded data.

[0041] The data transmission / reception unit 260 performs the transmission and reception of Protocol Data Units (PDUs) and Service Data Units (SDUs). Specifically, the data transmission / reception unit 260 performs assembly / decomposition of PDUs / SDUs at multiple layers (such as the Media Access Control Layer (MAC), Radio Link Control Layer (RLC), and Packet Data Convergence Protocol Layer (PDCP)). In addition, the data transmission / reception unit 260 performs error correction and retransmission control of data based on Hybrid ARQ (Hybrid automatic repeat request).

[0042] The control unit 270 controls each functional block that constitutes the UE200. In particular, in this embodiment, the control unit 270 constitutes a control unit that multiplexes the UCI onto the UL SCH. In rate matching of the UCI, the control unit 270 multiplies the number of bits constituting the UCI by a coefficient (β). The control unit 270 applies an extended range to which β can take, which includes at least one of the values ​​smaller than the default range and one of the values ​​larger than the default range. The default range may be considered to be the range defined in 3GPP Release 16. The extended range may be considered to be the range defined in 3GPP Release 17.

[0043] (3) Rate Matching The following section explains rate matching. Specifically, it describes UCI rate matching in the case of multiplexing UCI into UL SCH. Here, HARQ-ACK, CSI Part 1, and CSI Part 2 are used as examples of UCI. Note that HARQ-ACK, CSI-Part 1, and CSI-Part 2 are executed separately.

[0044] As shown in Figure 5, channel coding is applied to a HARQ-ACK having the bit sequence "X0, X1, ..." to obtain the bit sequence "C00, C01, ...". Rate matching is then applied to this bit sequence. The bit sequence after rate matching (E UCI) is E UCI =N L ×Q' ACK ×Q m may be represented by:

[0045] N L is the number of transmission layers of PUSCH. Q m is the modulation order of PUSCH. For example, Q' ACK is represented by the following formula (TS 38.212 V16.3.0 §6.3.2.4.1.1 “HARQ-ACK”).

[0046] [Numerical formula]

[0047] As shown in FIG. 6, channel encoding is applied to CSI Part 1 having a bit sequence of "Y0, Y1, ...", to obtain a bit sequence of "C00, C01, ...". Rate matching is applied to such a bit sequence. The bit sequence after rate matching (E UCI ) is E UCI =N L ×Q' CSI-part1 ×Q m may be represented by:

[0048] N L is the number of transmission layers of PUSCH. Q m is the modulation order of PUSCH. For example, Q' CSI-part1 is represented by the following formula (TS 38.212 V16.3.0 §6.3.2.4.1.2 “CSI part 1”).

[0049] [Numerical formula]

[0050] As shown in Figure 7, channel coding is applied to a CSI Part 2 having the bit sequence "Z0, Z1, ..." to obtain the bit sequence "C00, C01, ...". Rate matching is then applied to this bit sequence. The bit sequence after rate matching (E UCI ) is E UCI =N L ×Q' CSI-part2 ×Q m It may also be represented by [this method].

[0051] N L This is the number of transmit layers in PUSCH. Q m This is a modulation condition for PUSCH. For example, Q' CSI-part2 This is expressed by the following formula (TS38.212 V16.3.0 §6.3.2.4.1.3 “CSI part 2”).

[0052]

number

[0053] (4) Range of possible values ​​for coefficient (β) The following explains the range of possible values ​​for the coefficient (β). Here, we will use the coefficient (β) applied to HARQ-ACK as an example.

[0054] (4.1) Default range As shown in Figure 8, for the default range, the coefficient (β) shown in the right column corresponds to the index shown in the left column (TS38.213 V16.3.0 §9.3 “UCI reporting in physical uplink shared channel”). For example, the minimum value that the coefficient (β) can take in the default range is "1.000", and the maximum value that the coefficient (β) can take in the default range is "126.000". For indices of 16 or more, the coefficient (β) is not associated and can be used for future expansion (Reserved). As mentioned above, the default range is the range defined in 3GPP Release 16.

[0055] (4.2) Example of extended scope 1 As shown in Figure 9, in Example 1 of the extended range, the coefficients (β) shown in the right column correspond to the indices shown in the left column, similar to the default range. For example, Example 1 of the extended range includes values ​​smaller than the minimum value "1.000" that coefficients (β) can take in the default range (here, "0.000", "0.500", "0.650", "0.800"). In Example 1 of the extended range, values ​​smaller than the default range are defined using the indices that were reserved in the default range.

[0056] (4.3) Example of extended scope 2 As shown in Figure 10, in Example 2 of the extended range, the coefficients (β) shown in the right column correspond to the indices shown in the left column, similar to the default range. For example, Example 2 of the extended range includes values ​​smaller than the minimum value "1.000" that coefficients (β) can take in the default range (here, "0.000", "0.500", "0.650", "0.800"). In Example 2 of the extended range, a new Table is defined in which the coefficients (β) are sorted in ascending order.

[0057] (4.4) Example of extended range 3 As shown in Figure 11, in Example 3 of the extended range, the coefficient (β) shown in the right column corresponds to the index shown in the left column, similar to the default range. For example, Example 3 of the extended range includes values ​​greater than the maximum value "126.000" that the coefficient (β) can take in the default range (here, "180.000"). In Example 3 of the extended range, values ​​greater than the default range are defined using the index that was reserved in the default range.

[0058] (4.5) Example of extended range 4 As shown in Figure 12, in Example 4 of the extended range, the coefficient (β) shown in the right column corresponds to the index shown in the left column, similar to the default range. For example, Example 4 of the extended range includes a value greater than the maximum value that the coefficient (β) can take in the default range, "126.000" (here, "180.000"). Example 4 of the extended range has a similar structure to Example 3 of the extended range, but differs from Example 3 in that a new Table is defined.

[0059] (4.6) Example of extended range 5 As shown in Figure 13, in Example 5 of the extended range, the coefficients (β) shown in the right column correspond to the indices shown in the left column, similar to the default range. For example, Example 5 of the extended range includes values ​​smaller than the minimum value "1.000" that coefficients (β) can take in the default range (here, "0.000", "0.500", "0.650", "0.800") and values ​​larger than the maximum value "126.000" that coefficients (β) can take in the default range (here, "180.000"). In Example 5 of the extended range, the indices that were reserved in the default range are used to define values ​​smaller than the default range and values ​​larger than the default range.

[0060] (4.7) Example of extended range 6 As shown in Figure 14, in Example 6 of the extended range, the coefficients (β) shown in the right column are associated with the indices shown in the left column, similar to the default range. For example, Example 6 of the extended range includes values ​​smaller than the minimum value "1.000" that the coefficient (β) can take in the default range (here, "0.000", "0.500", "0.650", "0.800"), and values ​​larger than the maximum value "126.000" that the coefficient (β) can take in the default range (here, "180.000"). In Example 6 of the extended range, a new Table is defined in which the coefficients (β) are sorted in ascending order.

[0061] (5) Examples of application of extended scope The following sections describe examples of applying extended scope. Here, we explain the conditions required when applying extended scope.

[0062] (5.1) Condition 1 Condition 1 is that there are no specific requirements when applying the extended range. For example, if an index that was reserved in the default range is used to define either a value smaller than the default range or a value larger than the default range (hereinafter referred to as the extended value of β), it is possible to specify the extended value of β using the existing index. For example, the extended ranges shown in Figures 9, 11, and 13 may be applied without any specific requirements.

[0063] As shown in Figure 15, the RRC message used in condition 1 may include information elements defined in 3GPP Release 16. The information elements may include UCI-OnPUSCH and UCI-OnPUSCH-ForDCI-Fromat0-2-r16. UCI-OnPUSCH may include Dynamic or semiStatic as betaOffsets specifying the coefficient (β). UCI-OnPUSCH may also include Scaling, which specifies the scaling factor (α) as described above. UCI-OnPUSCH-ForDCI-Fromat0-2-r16 is an information element used when the DCI format is DCI Format 0_2. UCI-OnPUSCH-ForDCI-Fromat0-2-r16 may include Dynamic or semiStatic as betaOffsets specifying the coefficient (β). UCI-OnPUSCH-ForDCI-Fromat0-2-r16 may include Scaling, which specifies the scaling factor (α) described above. betaOffsets is an information element that indicates the index shown in Figures 9, 11, and 13 (TS38.331 V16.2.0 §6.3.2 “Radio Resource Control Information elements”).

[0064] (5.2) Condition 2 Condition 2 is that it is specified based on a Radio Resource Control Message (RRC message). In other words, the UE200 applies the extended range based on the RRC message.

[0065] For example, an RRC message may include an information element indicating whether or not to apply the extended scope. If the RRC message includes an information element indicating that the extended scope should be applied, the extended scope may be applied. If the RRC message does not include an information element indicating that the extended scope should be applied, or if the RRC message includes an information element indicating that the extended scope should not be applied, the extended scope may not be applied.

[0066] As shown in Figure 16, the RRC message used in condition 2 may include betaOffset-Table-r17 in addition to the information elements defined in 3GPP Release 16. betaOffset-Table-r17 may be included in UCI-OnPUSCH or UCI-OnPUSCH-ForDCI-Fromat0-2-r16. Extended ranges may be applied when betaOffset-Table-r17 is enabled.

[0067] As shown in Figure 17, the RRC message used in condition 2 may include UCI-OnPUSCH-r17 and UCI-OnPUSCH-ForDCI-Fromat0-2-r16-r17 in addition to the information elements defined in 3GPP Release 16. UCI-OnPUSCH-r17 may include Dynamic or semiStatic as betaOffsets specifying the coefficient (β), similar to UCI-OnPUSCH. UCI-OnPUSCH-r17 may also include Scaling, specifying the scaling factor (α). UCI-OnPUSCH-ForDCI-Fromat0-2-r16-r17 may include Dynamic or semiStatic as betaOffsets specifying the coefficient (β), similar to UCI-OnPUSCH-ForDCI-Fromat0-2-r16. UCI-OnPUSCH-ForDCI-Fromat0-2-r16-r17 may include a Scaling that specifies the scaling factor (α).

[0068] (5.3) Condition 3 Condition 3 is that UE200 reports a UE Capability that includes information elements regarding the application of the extended scope. In other words, UE200 applies the extended scope based on UE200's capabilities (UE Capability).

[0069] For example, an information element regarding the application of the extended range may indicate that UE200 supports UCI multiplexing for uplink channels (UL-SCH, PUSCH) with a different priority than UCI priority. An information element regarding the application of the extended range may also indicate that UE200 supports the extended range.

[0070] (5.4) Condition 4 Condition 4 is that the downlink control information (DCI) format is a specific format. In other words, the UE200 applies the extended range based on the DCI. The specific format may be DCI Format 0_2.

[0071] Condition 4 may be combined with Condition 2 described above. For example, the extended range may be applied if betaOffset-Table-r17 included in UCI-OnPUSCH-ForDCI-Fromat0-2-r16 is enabled and the DCI format is DCI Format 0_2. Alternatively, the extended range may be applied if UCI-OnPUSCH-ForDCI-Fromat0-2-r16-r17 is included in the RRC message and the DCI format is DCI Format 0_2.

[0072] (5.5) Condition 5 Condition 5 may be that the scaling factor (α) is greater than or equal to the first threshold, or that the scaling factor (α) is less than or equal to the second threshold. In other words, UE200 applies the extended range based on the value of the scaling factor (α).

[0073] For example, the first threshold may be the minimum value that the coefficient (β) can take in the default range ("1.000"). If the value of α is greater than or equal to the minimum, an extended range including values ​​smaller than the default range may be applied. The second threshold may be the maximum value that the coefficient (β) can take in the default range ("126.000"). If the value of α is less than or equal to the maximum, an extended range including values ​​larger than the default range may be applied.

[0074] (5.6) Condition 6 Condition 6 may also be that the priority of the Uplink Control Information (UCI) is different from the priority of the Uplink Shared Channel (UL-SCH, PUSCH). In other words, UE200 may apply the extended range when the priority of UCI is different from the priority of UL-SCH.

[0075] For example, if UCI has a low priority and UL-SCH has a high priority, an extended range including values ​​smaller than the default range may be applied. In such cases, a UCI with a higher priority may already be duplicated with PUSCH(UL-SCH). If UCI has a high priority and UL-SCH has a low priority, an extended range including values ​​larger than the default range may be applied.

[0076] Furthermore, UE200 may apply its default range when the UCI priority is the same as the UL-SCH priority. However, UE200 may also apply its extended range when the UCI priority is the same as the UL-SCH priority. The case where the UCI priority is the same as the UL-SCH priority may include cases where both the UCI and UL-SCH priorities are low, or cases where both the UCI and UL-SCH priorities are high.

[0077] (6) Example of operation The following describes an example of the operation of the embodiment. The following mainly describes the multiplexing of UCI for UL-SCH (PUSCH).

[0078] As shown in Figure 18, in step S10, UE200 sends a message containing UE Capability to NG-RAN20. UE Capability may also include informational elements regarding the application of the extended scope (condition 3 above).

[0079] In step S11, UE100 receives an RRC message from NG-RAN20. The RRC message may include an information element indicating whether or not the extended range should be applied (conditions 1 and 2 described above).

[0080] In step S12, UE200 receives one or more DCIs from NG-RAN20 via PDCCH. The DCI format may be DCI Format 0_2 (condition 4 above).

[0081] In step S13, UE200 transmits the uplink signal using a UL-SCH(PUSCH) with multiplexed UCIs. In such a case, based on at least one of conditions 1 to 6 described above, UE200 may apply an extended range as the range that the coefficient (β) can take.

[0082] (7) Actions and Effects In this embodiment, the UE200 applies an extended range (Figures 9 to 14) to the coefficient (β) used in rate matching, which includes at least one value smaller than the default range and one value larger than the default range. With this configuration, the multiplexing of uplink control information (UCI) to uplink shared channels (UL-SCH, PUSCH) can be properly performed. In particular, this configuration is useful when the priority of UCI differs from the priority of UL-SCH.

[0083] [Other embodiments] Although the present invention has been described above in accordance with the embodiments, it will be obvious to those skilled in the art that the present invention is not limited to these descriptions and that various modifications and improvements are possible.

[0084] The disclosure described above primarily describes HARQ-ACK. However, the disclosure is not limited to this. UCI multiplexed in UL-SCH may include CSI Part 1 and CSI Part 2. In such cases, the minimum value that the coefficient (β) can take in the default range may be "1.125". The maximum value that the coefficient (β) can take in the default range may be "20.00" (TS38.213 V16.3.0 §9.3 "UCI reporting in physical uplink shared channel"). Therefore, the extended range of the coefficient (β) for CSI Part 1 and CSI Part 2 may include values ​​smaller than "1.125" and values ​​larger than "20.00".

[0085] Although not specifically mentioned in the disclosure above, the default range may be the range used when the priority of the uplink control information (UCI) is the same as the priority of the uplink sharing channel (UL-SCH, PUSCH). Such a range may be referred to as the first range. The range may also be the range used when the priority of the uplink control information (UCI) is different from the priority of the uplink sharing channel (UL-SCH, PUSCH). Such a range may be referred to as the second range.

[0086] Although not specifically mentioned in the disclosure above, priorities may be determined as follows: For example, the priority of HARQ-ACK may be higher than the priority of SR. The priority of URLLC (Ultra Reliable and Low Latency Communications) may be higher than the priority of eMBB (enhanced Mobile BroadBand).

[0087] The block diagram (Figure 4) used in the description of the above-mentioned embodiments shows functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may be realized by combining the above one device or the above multiple devices with software.

[0088] Functions include, but are not limited to, judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, assumption, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission is called a transmitting unit or transmitter. In any case, as mentioned above, the method of implementation is not particularly limited.

[0089] Furthermore, the UE200 (the device) described above may function as a computer that processes the wireless communication method of this disclosure. Figure 19 shows an example of the hardware configuration of the device. As shown in Figure 19, the device may be configured as a computer device including a processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, and bus 1007.

[0090] In the following explanation, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware configuration of the device may include one or more of the devices shown in the diagram, or it may be configured to omit some of the devices.

[0091] Each functional block of the device (see Figure 4) is implemented by any hardware element of the computer device, or a combination of such hardware elements.

[0092] Furthermore, each function in the device is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, which allows the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of data reading and writing in the memory 1002 and storage 1003.

[0093] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may consist of a central processing unit (CPU) that includes interfaces with peripheral devices, control units, arithmetic units, registers, and so on.

[0094] Furthermore, 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 executes various processes accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. Moreover, the above-mentioned various processes may be executed by one processor 1001, or by two or more processors 1001 simultaneously or sequentially. The processor 1001 may be implemented by one or more chips. The program may also be transmitted from a network via a telecommunications line.

[0095] Memory 1002 is a computer-readable recording medium and may consist of at least one of the following: Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Random Access Memory (RAM), etc. Memory 1002 may also be called a register, cache, main memory, etc. Memory 1002 can store a program (program code), software modules, etc., that can execute a method according to one embodiment of this disclosure.

[0096] Storage 1003 is a computer-readable recording medium and may consist of at least one of the following: an optical disc such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disc, a digital multipurpose disc, a Blu-ray® disc), a smart card, flash memory (e.g., a card, a stick, a key drive), a floppy® disk, a magnetic strip, etc. Storage 1003 may also be called an auxiliary storage device. The recording medium described above may also be, for example, a database, server, or other suitable medium including at least one of memory 1002 and storage 1003.

[0097] The communication device 1004 is hardware (transceiver / receiver device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc.

[0098] The communication device 1004 may be configured to include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD).

[0099] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, LED lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0100] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0101] Furthermore, the device may include hardware such as a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), and a field-programmable gate array (FPGA), and some or all of the functional blocks may be implemented by such hardware. For example, processor 1001 may be implemented using at least one of these hardware components.

[0102] Furthermore, notification of information is not limited to the embodiments / models described herein and may be carried out by other means. For example, notification of information may be carried out by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper layer signaling (e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB))), other signals, or combinations thereof. RRC signaling may also be called RRC messages, and may be, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc.

[0103] Each aspect / embodiment described herein may be applied to at least one of the following: Long Term Evolution (LTE), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), Future Radio Access (FRA), New Radio (NR), W-CDMA®, GSM®, CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth®, and other appropriate systems, as well as next-generation systems extended based thereon. Furthermore, multiple systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A with 5G).

[0104] The processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described herein may be reordered, provided they are consistent with each other. For example, the methods described herein present various step elements in an exemplary order and are not limited to that specific order.

[0105] The specific operations described in this disclosure as being performed by a base station may, in some cases, be performed by its upper node. In a network consisting of one or more network nodes having a base station, it is clear that various operations performed for communication with a terminal can be performed by the base station and at least one other network node (for example, an MME or S-GW, but not limited to these). Although the above example illustrates a case where there is one other network node besides the base station, it may also be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0106] Information and signals (such as data) can be output from a higher layer (or lower layer) to a lower layer (or higher layer). Input and output may occur via multiple network nodes.

[0107] Input and output information may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information may be overwritten, updated, or appended to. Output information may be deleted. Input information may be sent to other devices.

[0108] The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (true or false), or by a numerical comparison (for example, a comparison with a predetermined value).

[0109] Each aspect / embodiment described herein may be used individually, in combination, or switched between as needed during implementation. Furthermore, notification of specific information (e.g., notification that "X is") is not limited to explicit notification, but may also be implicit (e.g., by not providing such notification).

[0110] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0111] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0112] The information, signals, etc. described in this disclosure may be represented using any of the various different technologies. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0113] In addition, terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and symbol may be a signal (signaling). Also, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, cell, frequency carrier, etc.

[0114] The terms “system” and “network” as used in this disclosure are interchangeable.

[0115] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a given value, or corresponding other information. For example, wireless resources may be indicated by an index.

[0116] The names used for the parameters described above are not restrictive in any way. Furthermore, the formulas and other expressions using these parameters may differ from those expressly disclosed in this disclosure. Since various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are not restrictive in any way.

[0117] In this disclosure, terms such as "Base Station (BS)," "wireless base station," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0118] A base station can house one or more (e.g., three) cells (also called sectors). When a base station houses multiple cells, the entire coverage area of ​​the base station can be divided into multiple smaller areas, each of which can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head: RRH)).

[0119] The terms "cell" or "sector" refer to a portion or all of the coverage area of ​​at least one of the base stations and base station subsystems that provide communication services in this coverage.

[0120] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0121] A mobile station may also be referred to by those skilled in the art as 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, handset, user agent, mobile client, client, or several other appropriate terms.

[0122] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, etc. The mobile body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operation. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0123] Furthermore, the term "base station" in this disclosure may be interpreted as "mobile station" (user terminal, hereinafter the same). For example, each aspect / embodiment of this disclosure may be applied to a configuration in which communication between a base station and a mobile station is replaced with communication between multiple mobile stations (which may be called, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.). In this case, the mobile station may have the functions that a base station has. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, uplink channel, downlink channel, etc. may be interpreted as side channel.

[0124] Similarly, the term "mobile station" in this disclosure may be interpreted as "base station." In this case, the base station may be configured to have the functions that a mobile station has.

[0125] A wireless frame may consist of one or more frames in the time domain. Each of these frames in the time domain may be called a subframe.

[0126] A subframe may further consist of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0127] Numerology may be communication parameters applied to at least one of the transmission and reception of a signal or channel. Numerology may include, for example, 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 configuration, specific filtering processes performed by the transceiver in the frequency domain, and specific windowing processes performed by the transceiver in the time domain.

[0128] A slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols). A slot may also be a time unit based on neurology.

[0129] A slot may include multiple minislots. Each minislot may consist of one or more symbols in the time domain. Minislots may also be called subslots. Minislots may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0130] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Different names may be used for each of these terms.

[0131] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. In other words, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

[0132] Here, TTI refers to, for example, the smallest unit of time for scheduling in wireless communication. For example, in an LTE system, the base station schedules each user terminal to allocate wireless resources (such as the frequency bandwidth and transmission power available to each user terminal) in TTI units. However, the definition of TTI is not limited to this.

[0133] TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, code words, etc., or it may be a processing unit for scheduling, link adaptation, etc. Given a TTI, the actual time interval (e.g., number of symbols) to which the transport block, code block, code word, etc. are mapped may be shorter than the given TTI.

[0134] Furthermore, if one slot or one mini-slot is referred to as TTI, then one or more TTIs (i.e., one or more slots or one or more mini-slots) may constitute the minimum time unit of scheduling. In addition, the number of slots (number of mini-slots) that constitute the minimum time unit of scheduling may be controlled.

[0135] A TTI with a time length of 1ms may also be called a normal TTI, long TTI, normal subframe, long subframe, slot, etc. A TTI shorter than a normal TTI may also be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, mini slot, sub slot, slot, etc.

[0136] Furthermore, long TTIs (e.g., normal TTIs, subframes, etc.) may be interpreted as TTIs with a time length exceeding 1 ms, and short TTIs (e.g., shortened TTIs, etc.) may be interpreted as TTIs with a TTI length less than that of a long TTI but 1 ms or more.

[0137] A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and in the frequency domain, it may contain one or more consecutive subcarriers. The number of subcarriers in an RB may be the same regardless of the neurology, for example, 12. The number of subcarriers in an RB may be determined based on the neurology.

[0138] Furthermore, the time domain of RB may contain one or more symbols and may be the length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc., may each consist of one or more resource blocks.

[0139] One or more RBs may also be called Physical RBs (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0140] Furthermore, a resource block may consist of one or more resource elements (REs). For example, one RE may be a radio resource area comprising one subcarrier and one symbol.

[0141] A Bandwidth Part (BWP), also known as a partial bandwidth, may represent a subset of consecutive common resource blocks (RBs) for a given neurology on a given carrier. Here, the common RBs may be identified by an index of the RBs relative to the carrier's common reference point. PRBs are defined within a BWP and may be numbered within that BWP.

[0142] A BWP may include BWPs for UL (UL BWP) and BWPs for DL ​​(DL BWP). One or more BWPs may be configured within a single carrier for a UE.

[0143] At least one of the configured BWPs may be active, and the UE does not need to assume that it will send or receive a given signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0144] The structures described above, such as wireless frames, subframes, slots, minislots, and symbols, are merely illustrative. For example, the number of subframes included in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, and the number of symbols, symbol length, and cyclic prefix (CP) length within a TTI can be varied in various ways.

[0145] The terms “connected,” “coupled,” or any variation thereof, mean any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be reinterpreted as “access.” As used in this disclosure, two elements may be considered to be “connected” or “coupled” with each other using at least one of one or more wires, cables, and printed electrical connections, and, in some non-limiting and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0146] The reference signal can also be abbreviated as Reference Signal (RS), and may be called a pilot depending on the applicable standard.

[0147] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0148] In the configuration of each of the above devices, "means" may be replaced with "part," "circuit," "device," etc.

[0149] Any reference to elements using designations such as “First,” “Second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, references to the First and Second elements do not imply that only two elements may be employed therein, or that the First element must precede the Second element in any way.

[0150] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0151] In this disclosure, if articles are added through translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0152] As used in this disclosure, the terms “determining” and “determining” may encompass a wide variety of actions. “Determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiry (e.g., searching in a table, database, or other data structure), and ascertaining. “Determining” may also include, for example, receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and accessing (e.g., accessing data in memory). Furthermore, "judgment" and "decision" can include considering something as having been "judged" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment" and "decision" can include considering something as having been "judged" or "decided" after some action. Also, "judgment (decision)" can be reinterpreted as "assuming," "expecting," or "considering."

[0153] In this disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "combine" may be interpreted similarly to "different."

[0154] Although the present disclosure has been described in detail above, it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure may be implemented in modified and altered forms without departing from the intent and scope of the present disclosure as defined by the claims. Accordingly, the descriptions in the present disclosure are for illustrative purposes only and are not intended to be restrictive in any way. [Explanation of Symbols]

[0155] 10 Wireless communication systems 20 NG-RAN 100 gNB 200 UE 210 Wireless signal transmission and reception unit 220 Amplifier section 230 Modulation / Demodulation Section 240 Control signal / reference signal processing unit 250 Encoding / Decoding Unit 260 Data transmission / reception unit 270 Control Unit 1001 Processor 1002 memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus

Claims

1. A transmitting unit that transmits an uplink signal using an uplink shared channel on which acknowledgments are multiplexed, The rate matching of the acknowledgment includes a control unit that multiplies the number of bits in the acknowledgment by a coefficient applied to the acknowledgment, The control unit applies the coefficient based on the downlink control information, The range of possible values ​​for the coefficient includes values ​​less than 1. Terminal.

2. A receiving unit that receives an uplink signal using an uplink shared channel on which acknowledgments are multiplexed, The rate matching of the acknowledgment includes a control unit that instructs the number of bits in the acknowledgment to be multiplied by a coefficient applied to the acknowledgment, The control unit instructs the application of the coefficient using the downlink control information, The range of possible values ​​for the coefficient includes values ​​less than 1. Base station.

3. Equipped with terminals and base stations, The aforementioned terminal is A transmitting unit that transmits an uplink signal using an uplink shared channel with multiplexed acknowledgments, The rate matching of the acknowledgment includes a control unit that multiplies the number of bits in the acknowledgment by a coefficient applied to the acknowledgment, The control unit applies the coefficient based on the downlink control information, The range of possible values ​​for the coefficient includes values ​​less than 1. Wireless communication system.

4. A wireless communication method performed by a terminal, The steps include: transmitting an uplink signal using an uplink shared channel with multiplexed acknowledgments; In the rate matching of the acknowledgment, the steps include multiplying the number of bits in the acknowledgment by a coefficient applied to the acknowledgment, The step of applying the coefficient based on downlink control information is included, The range of possible values ​​for the coefficient includes values ​​less than 1. Wireless communication method.

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