terminal

Abstract

To provide a terminal, a wireless communication method and a wireless communication system that improve the quality of an uplink channel.SOLUTION: In a wireless communication system, a terminal 200 includes a transmitter that transmits an uplink signal using an uplink channel, and a receiver that receives downlink control information (DCI) including an information element indicating a time domain resource allocation of the uplink channel, and the transmitter transmits the uplink signal using resources spanning consecutive slots on the basis of the DCI.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present disclosure relates to a terminal that performs wireless communication, and particularly to a terminal that transmits an uplink signal using an uplink channel.

Background Art

[0002] The 3rd Generation Partnership Project (3GPP) is standardizing the 5th generation mobile communication system (also called 5G, New Radio (NR) or Next Generation (NG)), and is also promoting the standardization of the next generation called Beyond 5G, 5G Evolution or 6G.

[0003] In Release 15 and Release 16 (NR) of 3GPP, the operation of a plurality of frequency ranges, specifically, bands including FR1 (410 MHz to 7.125 GHz) and FR2 (24.25 GHz to 52.6 GHz) has been standardized.

[0004] In Release 17 of 3GPP, coverage enhancement is an issue in FR1 and FR2 (Non-Patent Document 1). Along with this, improvement of channel quality such as PUSCH (Physical Uplink Shared Channel), PUSCH (Physical Uplink Shared Channel), PDCCH (Physical Downlink Control Channel), and PUCCH (Physical Uplink Control Channel) is desired.

Prior Art Documents

Non-Patent Documents

[0005]

Non-Patent Document 1

Summary of the Invention

[0006] By the way, as a TDD pattern, patterns such as "DDDSU" can be considered. "D" means a slot used only for downlink symbols (hereinafter referred to as D slot), "U" means a slot used only for uplink symbols (hereinafter referred to as U slot), and "S" means a slot used for both downlink and uplink symbols (hereinafter referred to as S slot).

[0007] When assuming the above-mentioned TDD pattern, a case where the resources (symbols) to which PUSCH can be allocated span consecutive slots can be considered. On the other hand, the resources that can be allocated by one DCI (Downlink Control Information) are defined with one slot as a unit.

[0008] As a result of intensive studies, the inventors have found the possibility of improving the channel quality of PUSCH based on the finding of using a case where the resources (symbols) to which PUSCH can be allocated span consecutive slots.

[0009] Therefore, the following disclosure has been made in view of such a situation, and an object thereof is to provide a terminal capable of realizing an improvement in channel quality.

[0010] The present disclosure includes a transmission unit that transmits an uplink signal using an uplink channel, and a reception unit that receives downlink control information including an information element indicating a time domain resource allocation of the uplink channel. The transmission unit is a terminal that transmits the uplink signal using resources spanning consecutive slots based on the downlink control information.

Brief Description of the Drawings

[0011]

Figure 1

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Figure 13

MODE FOR CARRYING OUT THE INVENTION

[0012] Hereinafter, embodiments will be described with reference to the drawings. Note that the same or similar reference numerals are given to the same functions and configurations, and the description thereof will be omitted as appropriate.

[0013] [Embodiment] (1) Overall schematic configuration of the wireless communication system FIG. 1 is an overall schematic configuration diagram of a wireless communication system 10 according to an embodiment. The wireless communication system 10 is a wireless communication system compliant with 5G New Radio (NR), and includes a Next Generation - Radio Access Network 20 (hereinafter, NG - RAN20) and a terminal 200 (hereinafter, UE200).

[0014] Note that the wireless communication system 10 may also be a wireless communication system compliant with a system called Beyond 5G, 5G Evolution, or 6G.

[0015] NG - RAN20 includes a radio base station 100A (hereinafter, gNB100A) and a radio base station 100B (hereinafter, gNB100B). Note that the specific configuration of the wireless communication system 10 including the number of gNBs and UEs is not limited to the example shown in FIG. 1.

[0016] NG - RAN20 actually includes a plurality of 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 be simply expressed as "network".

[0017] gNB100A and gNB100B are 5G - compliant radio base stations and perform wireless communication with UE200 according to 5G. gNB100A, gNB100B, and UE200 can support Massive MIMO (Multiple - Input Multiple - Output) that generates a more directional beam BM by controlling wireless signals transmitted from a plurality of antenna elements, carrier aggregation (CA) that bundles and uses a plurality of component carriers (CC), and dual connectivity (DC) that communicates with two or more transport blocks simultaneously between the UE and each of the two NG - RAN Nodes.

[0018] In addition, the wireless communication system 10 supports multiple frequency ranges (FRs). FIG. 2 shows the frequency ranges used in the wireless communication system 10.

[0019] As shown in FIG. 2, the wireless communication system 10 supports FR1 and FR2. The frequency bands of each FR are as follows.

[0020] ·FR1: 410 MHz to 7.125 GHz ·FR2: 24.25 GHz to 52.6 GHz In FR1, a Sub-Carrier Spacing (SCS) of 15, 30, or 60 kHz is used, and a bandwidth (BW) of 5 to 100 MHz may be used. FR2 is at a higher frequency than FR1, and an SCS of 60, or 120 kHz (240 kHz may be included) is used, and a bandwidth (BW) of 50 to 400 MHz may be used.

[0021] Note that the SCS may be interpreted as numerology. Numerology is defined in 3GPP TS38.300 and corresponds to the interval between one sub-carrier in the frequency domain.

[0022] Furthermore, the wireless communication system 10 also supports a frequency band higher than the frequency band of FR2. Specifically, the wireless communication system 10 supports a frequency band exceeding 52.6 GHz and up to 114.25 GHz. Such a high-frequency band may be referred to as "FR2x" for convenience.

[0023] To solve such problems, when using a band 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.

[0024] FIG. 3 shows a configuration example of a radio frame, a subframe, and a slot used in the wireless communication system 10.

[0025] As shown in FIG. 3, one slot is composed of 14 symbols, and the symbol period (and slot period) becomes shorter as the SCS becomes larger (wider). The SCS is not limited to the intervals (frequencies) shown in FIG. 3. For example, 480 kHz, 960 kHz, etc. may be used.

[0026] Also, the number of symbols constituting one slot does not necessarily have to be 14 symbols (for example, 28, 56 symbols). Furthermore, the number of slots per subframe may vary depending on the SCS.

[0027] Note that the time direction (t) shown in FIG. 3 may also be referred to as a time domain, a symbol period, or a symbol time. Also, the frequency direction may be referred to as a frequency domain, a resource block, a subcarrier, a bandwidth part (BWP), etc.

[0028] DMRS is a kind of reference signal and is prepared for various channels. Here, unless otherwise specified, it may mean the DMRS for the downlink data channel, specifically, the PDSCH (Physical Downlink Shared Channel). However, the DMRS for the uplink data channel, specifically, the PUSCH (Physical Uplink Shared Channel) may be interpreted in the same way as the DMRS for the PDSCH.

[0029] DMRS can be used for channel estimation in the UE200 as part of a device, for example, coherent demodulation. DMRS may exist only in the resource blocks (RBs) used for PDSCH transmission.

[0030] The DMRS may have multiple mapping types. Specifically, the DMRS has mapping type A and mapping type B. In mapping type A, the first DMRS is placed in the second or third symbol of the slot. In mapping type A, the DMRS may be mapped based on the slot boundary regardless of where the actual data transmission starts in the slot. The reason why the first DMRS is placed in the second or third symbol of the slot may be interpreted as to place the first DMRS after the control resource sets (CORESET).

[0031] In mapping type B, the first DMRS may be placed in the first symbol of the data allocation. That is, the position of the DMRS may be given relatively with respect to the location where the data is placed rather than with respect to the slot boundary.

[0032] Also, the DMRS may have multiple types. Specifically, the DMRS has Type 1 and Type 2. Type 1 and Type 2 differ in the mapping in the frequency domain and the maximum number of orthogonal reference signals. Type 1 can output a maximum of 4 orthogonal signals with a single-symbol DMRS, and Type 2 can output a maximum of 8 orthogonal signals with a double-symbol DMRS.

[0033] (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 the UE200 will be described.

[0034] FIG. 4 is a functional block configuration diagram of the UE200. As shown in FIG. 4, the UE200 includes a radio signal transceiver 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 transceiver unit 260, and a control unit 270.

[0035] The wireless signal transceiver unit 210 transmits and receives wireless signals according to NR. The wireless signal transceiver unit 210 supports Massive MIMO, CA that bundles and uses multiple CCs, and DC that enables simultaneous communication between the UE and two NG-RAN Nodes respectively.

[0036] In the embodiment, the wireless signal transceiver unit 210 constitutes a transmitter that transmits an uplink signal using an uplink channel. The wireless signal transceiver unit 210 transmits an uplink signal using resources (symbols) that span consecutive slots based on downlink control information (DCI described later). Hereinafter, the case where the uplink channel is PUSCH will be described. Details of the repeated transmission will be described later (see FIG. 5).

[0037] The amplifier unit 220 is composed of a PA (Power Amplifier) / LNA (Low Noise Amplifier), etc. The amplifier unit 220 amplifies the signal output from the modulation / demodulation unit 230 to a predetermined power level. Also, the amplifier unit 220 amplifies the RF signal output from the wireless signal transceiver unit 210.

[0038] The modulation / demodulation unit 230 performs data modulation / demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (gNB100 or other gNB). In the modulation / demodulation unit 230, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform - Spread (DFT-S-OFDM) may be applied. Also, DFT-S-OFDM may be used not only for the uplink (UL) but also for the downlink (DL).

[0039] 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.

[0040] Specifically, the control signal and reference signal processing unit 240 receives various control signals transmitted from the gNB 100 via a predetermined control channel, for example, control signals of the Radio Resource Control (RRC) layer. Also, the control signal and reference signal processing unit 240 transmits various control signals to the gNB 100 via a predetermined control channel.

[0041] The control signal and reference signal processing unit 240 performs processing using reference signals (RS) such as Demodulation Reference Signal (DMRS) and Phase Tracking Reference Signal (PTRS).

[0042] DMRS is a reference signal (pilot signal) known between the terminal-specific base station and the terminal for estimating the fading channel used for data demodulation. PTRS is a terminal-specific reference signal for estimating phase noise, which is a problem in high frequency bands.

[0043] Note that the reference signals may include, in addition to DMRS and PTRS, Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS), and Positioning Reference Signal (PRS) for location information.

[0044] Also, the channels include a control channel and a data channel. The control channel includes Physical Downlink Control Channel (PDCCH), Physical Uplink Control Channel (PUCCH), Random Access Channel (RACH), Downlink Control Information (DCI) including Random Access Radio Network Temporary Identifier (RA-RNTI), and Physical Broadcast Channel (PBCH), etc.

[0045] In addition, the data channel includes a Physical Downlink Shared Channel (PDSCH), a Physical Uplink Shared Channel (PUSCH), etc. Data means the data transmitted via the data channel. The data channel may be read as a shared channel.

[0046] Here, the control signal / reference signal processing unit 240 constitutes a receiving unit that receives downlink control information (DCI). As an existing field, DCI includes fields that store DCI Formats, Carrier indicator (CI), BWP indicator, Frequency Domain Resource Allocation (FDRA), Time Domain Resource Allocation (TDRA), Modulation and Coding Scheme (MCS), HARQ Process Number (HPN), New Data Indicator (NDI), Redundancy Version (RV), etc.

[0047] The value stored in the DCI Format field is an information element that specifies the format of the DCI. The value stored in the CI field is an information element that specifies the CC to which the DCI is applied. The value stored in the BWP indicator field is an information element that specifies the BWP to which the DCI is applied. The BWP that can be specified by the BWP indicator is set by the information element (BandwidthPart-Config) included in the RRC message. The value stored in the FDRA field is an information element that specifies the frequency domain resource to which the DCI is applied. The frequency domain resource is specified by the value stored in the FDRA field and the information element (RA Type) included in the RRC message. The value stored in the TDRA field is an information element that specifies the time domain resource to which the DCI is applied. The time domain resource is specified by the value stored in the TDRA field and the information elements (pdsch-TimeDomainAllocationList, pusch-TimeDomainAllocationList) included in the RRC message. The time domain resource may be specified by the value stored in the TDRA field and the default table. The value stored in the MCS field is an information element that specifies the MCS to which the DCI is applied. The MCS is specified by the value stored in the MCS and the MCS table. The MCS table may be specified by the RRC message or may be specified by RNTI scrambling. The value stored in the HPN field is an information element that specifies the HARQ Process to which the DCI is applied. The value stored in the NDI is an information element for specifying whether the data to which the DCI is applied is the first transmitted data. The value stored in the RV field is an information element that specifies the redundancy of the data to which the DCI is applied.

[0048] In an embodiment, the DCI includes a time domain resource allocation (TDRA) of the uplink channel (PUSCH). The DCI including the TDRA of the PUSCH may be DCI of Format 0_0, Format 0_1, or Format 0_2.

[0049] The symbolization / decryption unit 250 performs data segmentation / concatenation, channel coding / decryption, etc. for each predetermined communication destination (gNB 100 or another gNB).

[0050] Specifically, the symbolization / decryption unit 250 divides the data output from the data transmission / reception unit 260 into a predetermined size and performs channel coding on the divided data. Also, the symbolization / decryption unit 250 decrypts the data output from the modulation / demodulation unit 230 and concatenates the decrypted data.

[0051] The data transmission / reception unit 260 performs the transmission and reception of Protocol Data Unit (PDU) and Service Data Unit (SDU). Specifically, the data transmission / reception unit 260 performs the assembly / disassembly of PDU / SDU in a plurality of layers (such as the Medium Access Control layer (MAC), the Radio Link Control layer (RLC), and the Packet Data Convergence Protocol layer (PDCP)). Also, the data transmission / reception unit 260 performs error correction and retransmission control of data based on Hybrid automatic repeat request (Hybrid ARQ).

[0052] The control unit 270 controls each functional block constituting the UE 200. In particular, in the embodiment, the control unit 270 controls the transmission of uplink signals (hereinafter referred to as specific transmission) using resources (symbols) that span consecutive slots. Details of the specific transmission will be described later (see FIG. 5).

[0053] (3) Specific transmission Hereinafter, the specific transmission will be described. Here, a case where the TDD pattern is "DDDSU" will be described. "D" means a slot used only for downlink symbols (hereinafter referred to as D slot), "U" means a slot used only for uplink symbols (hereinafter referred to as U slot), and "S" means a slot used for both downlink and uplink symbols (hereinafter referred to as S slot).

[0054] Also, a case where one slot contains 14 symbols will be described. "D" means a symbol used for the downlink (hereinafter referred to as the D symbol), "U" means a symbol used for the uplink (hereinafter referred to as the U symbol), and "G" means a guard symbol (hereinafter referred to as the G symbol).

[0055] As shown in FIG. 5, in the embodiment, attention is paid to a case where the S slot and the U slot are continuous and the last 2 symbols of the S slot are U symbols. That is, attention is paid to a case where 16 U symbols are continuous.

[0056] In the existing specification, the unit for which resources can be allocated based on one DCI is one slot, and allocating PUSCH based on one DCI for 16 consecutive U symbols has not been considered. As a method of treating it as a pseudo single unit, a method of using repetition Type B as the repetition Type of PUSCH can be considered, but it is not preferable for the following reasons. Specifically, for example, when applying 8 - time repeated transmission for 2 symbols, the coding rate becomes 7 times (14 / 2) compared to the case where 14 symbols are allocated to PUSCH, and the channel characteristics of PUSCH cannot be sufficiently obtained at the cell edge, etc. Furthermore, since DMRS mapping is required for each repeated transmission, the resources available for PUSCH are reduced.

[0057] On the contrary, in the embodiment, by newly introducing the concept of "transmission of uplink signals using resources (symbols) across consecutive slots", it is allowed to allocate U symbols across consecutive slots to PUSCH based on one DCI. For example, as shown in FIG. 5, the unit for which resources can be allocated based on one DCI is extended to "16 OFDM Symbols (U symbols)".

[0058] Furthermore, in specific transmission, restrictions may be imposed on the resources allocable to the PUSCH. The restriction may be to define the number (n) of consecutive slots as a predetermined number (for example, n = 2). The restriction may be to define the maximum number of consecutive slots. The restriction may be to define the start position (S) of the symbols allocable to the PUSCH as a predetermined position (for example, only S = 12, 13). The restriction may be to define the number (L) of symbols allocable to the PUSCH within a predetermined range (for example, 16 ≦ L ≦ 20). The restriction may be to define the number (L) of symbols allocable to the PUSCH as a predetermined number (for example, L = 16, 18, 20).

[0059] (4) Operation example Hereinafter, the operation example of the embodiment will be described.

[0060] As shown in FIG. 6, in step S10, the UE 200 receives DCI from the NG RAN 20. The DCI includes TDRA and the like.

[0061] In step S11, the UE 200 performs transmission (specific transmission) of an uplink signal using resources (symbols) that span consecutive slots. Such restrictions as described above may be provided in such specific transmission. Note that the UE 200 may perform repeated transmission of an uplink signal using the PUSCH.

[0062] (5) Action and effect In the embodiment, by expanding the unit for which resources can be allocated based on one DCI to "U symbols that span consecutive slots", while suppressing an increase in the coding rate, a decrease in resources allocable to the PUSCH, etc., the U symbols that span consecutive slots can be effectively used as resources for the PUSCH. As a result, coverage enhancement regarding the PUSCH can be realized.

[0063] [Modification example 1] In the following, Modification Example 1 of the embodiment will be described. In the following, the differences from the embodiment will be mainly described.

[0064] In Modification Example 1, a case will be described where, as the PUSCH mapping type, a specific mapping type (for example, Type C) used for the allocation of resources across consecutive slots is defined.

[0065] Specifically, as shown in FIG. 7, the PUSCH mapping type determines the start position (S) of the symbols allocable to the PUSCH and the number of symbols (L) allocable to the PUSCH. The PUSCH mapping type may be determined by S + L. The values of S, L, and S + L may be determined for each CP (Cyclic Prefix) length. The values of S, L, and S + L may be determined for each repetition Type of the PUSCH.

[0066] Existing PUSCH mapping types include Type A and Type B. Type A is used only for repetition Type A, and Type B is used for both repetition Type A and repetition Type B. In the existing Type A and Type B, since slot-based allocation is assumed, the value of L does not exceed "14" (see §6.1.2 of 3GPP TS38.214 V16.2.0).

[0067] On the other hand, in the specific mapping type (Type C) newly defined for specific transmission, the value of L is defined to be able to take a value exceeding "14". For example, in Type C applied to Normal cyclic prefix, the value of L can take values such as 15, 16, …, n. Similarly, in Type C applied to Extended cyclic prefix, the value of L can take values such as 15, 16, …, m. Note that n and m are natural numbers greater than 16, and n and m may be the same value or different values. It should be noted that with such an extension, the range of values that S + L can take is also changed.

[0068] Note that the values such as PUSCH mapping Type, S, and L may be specified by the TDRA included in the DCI. The values specifying S and L may also be referred to as SLIV (Start and Length Indicator Value). The table shown in FIG. 7 may be a predefined table.

[0069] [Modification Example 2] In the following, Modification Example 2 of the embodiment will be described. In the following, the differences from the embodiment will be mainly described.

[0070] In Modification Example 2, a case will be described where a specific mapping position used for resource allocation across consecutive slots is defined as the mapping position of the uplink channel demodulation reference signal (hereinafter, DMRS).

[0071] Specifically, as shown in FIG. 8, the mapping position of the DMRS (DM-RS positions in FIG. 8) is determined for each PUSCH mapping type described in Modification Example 1. Note that when the PUSCH mapping type is Type A, l dThe value of may be the interval between the first symbol to which the PUSCH resource is allocated and the last symbol to which the PUSCH resource is allocated within the slot. When the PUSCH mapping type is Type B, l d The value of may be the interval between the scheduled PUSCH resources in the case where in-slot frequency hopping is not used, or may be the interval per hop in the case where in-slot frequency hopping is used. When the PUSCH mapping type is Type A, l 0 The value of may be determined by the higher layer parameter (dmpr-TypeA-Position). When the PUSCH mapping type is Type B, l 0 The value of may be a predetermined value (for example, “0”). As shown in FIG. 8, at the mapping positions of the DMRS defined for each existing PUSCH mapping type, slot-based allocation is assumed, so l d the value of does not exceed “14” (see §6.4.1.1.3 of 3GPP TS38.211 V16.2.0).

[0072] In contrast, as shown in FIG. 9, at the specific mapping positions newly defined for specific transmissions, l d the value of is defined to be able to take a value exceeding “14”. The specific mapping positions may be associated with Type C described in Modification Example 1. l d And 0 The determination method of may be the same as the existing determination method.

[0073] Note that the fixed values other than in the table shown in FIG. 9 (for example, “4” in the row where = 4, “3” or “6” in the row where = 8, etc.) may be the same as the fixed values other than in the table shown in FIG. 8, and in the table shown in FIG. 8 0 The fixed values other than (for example, d “4” in the row where = 4, d “3” or “6” in the row where = 8, etc.) may be the same as the fixed values other than in the table shown in FIG. 8, and in the table shown in FIG. 8 0 The fixed values other than may be the same as the fixed values other than in the table shown in FIG. 8, and in the table shown in FIG. 8 0It may be a value different from other fixed values. Further, the number of dmrs-AdditionalPosition (pos0 to pos3) in the table shown in FIG. 9 is the same as the number of dmrs-AdditionalPosition in the table shown in FIG. 8 ("4"). However, considering the extension of the number of symbols treated as one unit, the number of dmrs-AdditionalPosition in the table shown in FIG. 9 may be larger than the number of dmrs-AdditionalPosition in the table shown in FIG. 8.

[0074] [Modification Example 3] Hereinafter, Modification Example 3 of the embodiment will be described. Hereinafter, the differences from the embodiment will be mainly described.

[0075] In Modification Example 3, a case where the specific mapping type (for example, Type C) described in Modification Example 1 is explicitly set by NG RAN20 will be described. Specifically, the UE 200 receives a message including an information element indicating the setting of the specific mapping type. The information element may be included in the PUSCH-Config information element. The information element is a newly defined information element and may be referred to as drms-UplinkForPUSCH-mappingTypeC.

[0076] (1) Operation Example Hereinafter, the operation example of Modification Example 3 will be described.

[0077] As shown in FIG. 10, in step S20, the UE 200 receives an RRC message. The RRC message includes drms-UplinkForPUSCH-mappingTypeC indicating the setting of the specific mapping type (for example, Type C). As shown in FIG. 11, drms-UplinkForPUSCH-mappingTypeC may be an extended IE of PUSCH-Config information.

[0078] In step S21, UE200 receives DCI from NG RAN20. The DCI includes TDRA and the like.

[0079] In step S22, UE200 performs uplink signal transmission (specific transmission) using resources (symbols) that span consecutive slots. Such restrictions as described above may be provided for such specific transmission. UE200 may transmit DRMS at specific mapping positions. Note that UE200 may also perform repeated transmission of uplink signals using PUSCH.

[0080] [Modification Example 4] Hereinafter, Modification Example 4 of the embodiment will be described. Hereinafter, the differences from the embodiment will be mainly described.

[0081] In Modification Example 4, a case will be described in which other processes are extended along with the introduction of uplink signal transmission (specific transmission) using resources (symbols) that span consecutive slots, that is, the introduction of the specific mapping type (for example, Type C) described in Modification Example 1.

[0082] (1) repetition Type A new repetition Type (for example, repetition Type C) corresponding to the specific mapping type may be introduced.

[0083] For example, repetition Type C may be explicitly configured by an RRC message or the like. In repetition Type C, symbols spanning consecutive slots may be used as one unit (repetition unit), and repeated transmission may be performed for each repetition unit. The position of the symbol used for repeated transmission may be the same for each repetition unit. Such repetition Type C may be considered an extension of repetition Type A. The number of times of repeated transmission of repetition Type C may be explicitly configured by a PUSCH-Config Information element or the like, similar to repetition Type A. In repetition Type C, the slots used for repeated transmission may be explicitly configured by NG RAN20, or may be implicitly configured by NG RAN20. The slots used for repeated transmission may be predetermined according to the TDD pattern.

[0084] In repetition Type C, repeated transmission may be performed using consecutive slots, or repeated transmission may be performed using non-consecutive slots. In repetition Type C, repeated transmission may be executed using consecutive repetition units, or repeated transmission may be executed using non-consecutive repetition units.

[0085] Note that for a specific mapping type, repeated transmission of the uplink signal using PUSCH may not be applied.

[0086] (2)Frequency hopping New Frequency hopping corresponding to a specific mapping type may be introduced.

[0087] The new Frequency hopping may be explicitly configured by an RRC message or the like. In the new Frequency hopping, the same Frequency hopping (Inter-slot or Intra-slot) as that of repetition Type A may be used. In Inter-slot Frequency hopping, parameters such as the applicability of Frequency hopping and the frequency offset value may be explicitly configured by a Config Information element or the like. In Intra-slot Frequency hopping, parameters such as the applicability of Frequency hopping and the frequency offset value may be explicitly configured by a Config Information element or the like. In Intra-slot Frequency hopping, the same symbol allocation as that of repetition Type A may be applied.

[0088] Note that for a specific mapping type, Frequency hopping may not be applied.

[0089] [Modification Example 5] In the following, Modification Example 5 of the embodiment will be described. In the following, the differences from the embodiment will be mainly described.

[0090] In Modification Example 5, the UE 200 transmits a message including an information element regarding the ability to allocate resources across consecutive slots (UE Capability) (step S30 in FIG. 12). The UE Capability may include the following information elements.

[0091] For example, UE Capability may include an information element indicating whether it supports the above-described specific transmission. UE Capability may include an information element indicating whether it supports a specific mapping type (e.g., Type C). UE Capability may include an information element indicating whether it supports newly defined processes (specific mapping positions, repetition Type C, new frequency hopping) associated with the introduction of a specific mapping type. In the following, these information elements are referred to as information elements indicating supportability.

[0092] For example, UE Capability may include an information element indicating supportability for each frequency. Such an information element may include an information element specifying all frequencies, an information element indicating individual frequencies, or an information element indicating a frequency range (e.g., FR1, FR2, etc.). The information element specifying all frequencies can represent supportability for UE200.

[0093] For example, UE Capability may include an information element indicating supportability for each multiplexing scheme. Such an information element may include an information element specifying all multiplexing schemes, or an information element indicating individual multiplexing schemes (TDD, FDD, etc.). The information element specifying all multiplexing schemes can represent supportability for UE200.

[0094] [Other Embodiments] As described above, the content of the present invention has been described according to the embodiments. However, it is obvious to those skilled in the art that the present invention is not limited to these descriptions, and various modifications and improvements are possible.

[0095] Although not specifically mentioned in the embodiments, in the above-described repetition Type B, when a specific transmission (specific mapping type) is set, an extension may be made to change the handling of Invalid symbols from "drop" to "shift". "Drop" means that Invalid symbols are counted as PUSCH transmission occasions, and "shift" means that Invalid symbols are not counted as PUSCH transmission occasions. In such a case, an S-slot in which Invalid symbols and Valid symbols are mixed may be counted as a PUSCH transmission occasion.

[0096] In the embodiments, PUSCH is exemplified as a channel to which a specific transmission (specific mapping type) is applied. However, the embodiments are not limited to this. The embodiments can apply a specific transmission (specific mapping type) as an extension of resource allocation to a channel in which the unit capable of allocating resources based on one DCI is one slot. For example, the channel to which a specific transmission (specific mapping type) is applied may be PUCCH.

[0097] Although not specifically mentioned in the embodiments, UE200 may receive a message including an information element indicating whether to set repeated transmission using non-consecutive specific slots. Such a message may be an RRC message.

[0098] The block diagram (FIG. 4) used in the description of the above-described embodiment shows blocks in terms of functions. These functional blocks (components) are realized by any combination of at least one of hardware and software. Also, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically combined device, or two or more physically or logically separated devices may be directly or indirectly (e.g., using wired, wireless, etc.) connected and realized using these multiple devices. The functional block may be realized by combining software with the above one device or the above multiple devices.

[0099] Functions include, but are not limited to, judgment, decision, determination, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, regarded as, notification (broadcasting), notification (notifying), communication (communicating), forwarding, configuration (configuring), reconfiguration (reconfiguring), allocation (allocating, mapping), assignment (assigning), etc. For example, a functional block (component) that functions as transmission is called a transmission unit or a transmitter. As described above, the realization method is not particularly limited.

[0100] Furthermore, the above-described UE200 (the device) may function as a computer that performs the processing of the wireless communication method of the present disclosure. FIG. 13 is a diagram showing an example of the hardware configuration of the device. As shown in FIG. 13, the device may be 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.

[0101] In the following description, the term "device" can be read as a circuit, device, unit, etc. The hardware configuration of the device may be configured to include one or more of each device shown in the figure, or may be configured without including some of the devices.

[0102] Each functional block of the device (see Figure 4) is realized by any hardware element of the computer device or a combination of the hardware elements.

[0103] Also, each function in the device is realized by loading a predetermined software (program) onto hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls communication by the communication device 1004, or controls at least one of reading and writing data in the memory 1002 and the storage 1003.

[0104] The processor 1001 controls the entire computer by operating, for example, an operating system. The processor 1001 may be constituted by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, etc.

[0105] Also, the processor 1001 reads a program (program code), software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these. As the program, a program for causing the computer to execute at least a part of the operations described in the above embodiments is used. Further, the above various processes may be executed by one processor 1001, or may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be mounted by one or more chips. Note that the program may be transmitted from a network via a telecommunication line.

[0106] Memory 1002 is a computer-readable recording medium and may be constituted by at least one of, for example, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Random Access Memory (RAM), etc. Memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. Memory 1002 can store a program (program code), a software module, etc. that can execute the method according to an embodiment of the present disclosure.

[0107] Storage 1003 is a computer-readable recording medium and may be constituted by at least one of, for example, an optical disk such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disc, a digital versatile disc, a Blu-ray (registered trademark) disc), a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. Storage 1003 may also be referred to as an auxiliary storage device. The above-described recording medium may be, for example, a database, a server, or other appropriate medium including at least one of Memory 1002 and Storage 1003.

[0108] Communication device 1004 is hardware (a transmission / reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc.

[0109] The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to implement at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD).

[0110] The input device 1005 is an input device that receives an external input (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that performs an output to the outside (for example, a display, a speaker, an LED lamp, etc.). Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

[0111] Also, 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 may be configured using different buses for each device.

[0112] Furthermore, the device may be configured to include hardware such as a microprocessor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), etc., and part or all of each functional block may be realized by the hardware. For example, the processor 1001 may be implemented using at least one of these hardware.

[0113] Also, the notification of information is not limited to the aspects / embodiments described in this disclosure, and other methods may be used. For example, the notification of information may be implemented 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 a combination thereof. Also, RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup message, an RRC connection reconfiguration message, etc.

[0114] Each aspect / embodiment described in this disclosure may be applied to at least one of systems using 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 (registered trademark), GSM (registered trademark), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), other suitable systems, and next-generation systems extended based thereon. Also, multiple systems may be combined (e.g., a combination of at least one of LTE and LTE-A and 5G) and applied.

[0115] For each processing procedure, sequence, flowchart, etc. described in the present disclosure, the order may be changed as long as there is no contradiction. For example, for the methods described in the present disclosure, the elements of various steps are presented using an exemplary order and are not limited to the specific order presented.

[0116] Specific operations assumed to be performed by a base station in the present disclosure 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 obvious that various operations performed for communication with a terminal can be performed by at least one of the base station and other network nodes other than the base station (for example, but not limited to, MME or S-GW, etc.). Although the case where there is one other network node other than the base station is exemplified above, a combination of a plurality of other network nodes (for example, MME and S-GW) may also be possible.

[0117] Information, signals (such as information) can be output from an upper layer (or lower layer) to a lower layer (or upper layer). They may also be input and output via a plurality of network nodes.

[0118] The input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. The input and output information can be overwritten, updated, or appended. The output information may be deleted. The input information may be transmitted to other devices.

[0119] The determination may be made based on a value represented by 1 bit (0 or 1), may be made based on a Boolean value (true or false), or may be made by numerical comparison (for example, comparison with a predetermined value).

[0120] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched and used during execution. Also, the notification of predetermined information (for example, the notification of "being X") is not limited to being explicitly performed, and may be performed implicitly (for example, by not performing the notification of the predetermined information).

[0121] 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, etc., whether called software, firmware, middleware, microcode, hardware description language, or by other names.

[0122] Also, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, when software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, optical fiber cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technologies (such as infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of the transmission medium.

[0123] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which 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.

[0124] In addition, with regard to the terms described in the present disclosure and the terms necessary for understanding the present disclosure, they may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Also, the signal may be a message. Further, a component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.

[0125] The terms "system" and "network" used in the present disclosure are used interchangeably.

[0126] Also, the information, parameters, etc. described in the present disclosure may be represented using absolute values, relative values from a predetermined value, or corresponding other information. For example, a radio resource may be indicated by an index.

[0127] The names used for the above-described parameters are not limiting in any way. Furthermore, mathematical formulas, etc. using these parameters may be different from those explicitly disclosed in the present disclosure. Since various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, the various names assigned to these various channels and information elements are not limiting in any way.

[0128] In the present disclosure, terms such as "Base Station (BS)", "radio 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. The base station may also be referred to by terms such as macro cell, small cell, femto cell, and pico cell.

[0129] A base station can accommodate one or more (e.g., three) cells (also called sectors). When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each of the smaller areas can provide communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head: RRH)).

[0130] The term "cell" or "sector" refers to a part or the whole of the coverage area of at least one of the base station and the base station subsystem that provides communication services within this coverage.

[0131] In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE)", and "terminal" may be used interchangeably.

[0132] 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 some other suitable term.

[0133] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), a moving body that moves unmanned (e.g., a drone, a self-driving vehicle, etc.), or a robot (humanoid or unmanned). Note that at least one of the base station and the mobile station also includes 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.

[0134] Also, the base station in the present disclosure may be read as a mobile station (user terminal, the same hereinafter). For example, for a configuration in which communication between the base station and the mobile station is replaced with communication between a plurality of mobile stations (which may be referred to as, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.), each aspect / embodiment of the present disclosure may be applied. In this case, the functions of the base station may be configured as those of the mobile station. Also, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (e.g., "side"). For example, an uplink channel, a downlink channel, etc. may be read as a side channel.

[0135] Similarly, the mobile station in the present disclosure may be read as a base station. In this case, the functions of the mobile station may be configured as those of the base station.

[0136] The wireless frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a sub-frame.

[0137] The sub-frame may further be composed of one or more slots in the time domain. The sub-frame may have a fixed time length (e.g., 1 ms) independent of numerology.

[0138] Numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel. Numerology may indicate at least one of, for example, sub-carrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, wireless frame configuration, specific filtering processing performed by a transceiver in the frequency domain, specific windowing processing performed by a transceiver in the time domain, etc.

[0139] The slot may 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. The slot may be a time unit based on numerology.

[0140] The slot may include a plurality of mini-slots. Each mini-slot may be composed of one or more symbols in the time domain. Also, the mini-slot may be called a sub-slot. The mini-slot may be composed of a smaller number of symbols than the slot. The PDSCH (or PUSCH) transmitted in a time unit larger than the mini-slot may be called PDSCH (or PUSCH) mapping type A. The PDSCH (or PUSCH) transmitted using the mini-slot may be called PDSCH (or PUSCH) mapping type B.

[0141] The radio frame, sub-frame, slot, mini-slot, and symbol all represent time units when transmitting signals. Different names corresponding to each of them may also be used.

[0142] For example, one sub-frame may be called a transmission time interval (TTI), or a plurality of consecutive sub-frames may be called a TTI, or one slot or one mini-slot may be called a TTI. That is, at least one of the sub-frame and the TTI may be the sub-frame (1 ms) in the existing LTE, or a period shorter than 1 ms (for example, 1 - 13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, a mini-slot, etc. instead of a sub-frame.

[0143] Here, the TTI refers to, for example, the minimum time unit of scheduling in wireless communication. For example, in the LTE system, the base station performs scheduling to allocate radio resources (such as the frequency bandwidth and transmission power that can be used at each user terminal) to each user terminal in TTI units. Note that the definition of the TTI is not limited to this.

[0144] The TTI may be a transmission time unit such as a channel-coded data packet (transport block), code block, codeword, etc., or may be a processing unit such as scheduling, link adaptation, etc. When the TTI is given, the time interval (e.g., number of symbols) in which a transport block, code block, codeword, etc. are actually mapped may be shorter than the TTI.

[0145] Note that when one slot or one mini-slot is called a TTI, one or more TTIs (i.e., one or more slots or one or more mini-slots) may be the minimum time unit for scheduling. Also, the number of slots (number of mini-slots) constituting the minimum time unit for the scheduling may be controlled.

[0146] A TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel.8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc. A TTI shorter than the normal TTI may be called a shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened subframe, short subframe, mini-slot, sub-slot, slot, etc.

[0147] Note that the long TTI (e.g., normal TTI, subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, or the short TTI (e.g., shortened TTI, etc.) may be read as a TTI having a TTI length less than that of the long TTI and not less than 1 ms.

[0148] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and in the frequency domain, it may include one or a plurality of consecutive subcarriers. The number of subcarriers included in the RB may be the same regardless of the numerology, for example, it may be 12. The number of subcarriers included in the RB may be determined based on the numerology.

[0149] Also, the time domain of the RB may include one or more symbols, and may have a length of 1 slot, 1 mini-slot, 1 sub-frame, or 1 TTI. 1 TTI, 1 sub-frame, etc. may each be composed of one or more resource blocks.

[0150] Note that one or more RBs may be referred to as Physical RB (PRB), Sub-Carrier Group (SCG), Resource Element Group (REG), PRB pair, RB pair, etc.

[0151] Also, a resource block may be composed of one or more Resource Elements (REs). For example, 1 RE may be a radio resource area of 1 sub-carrier and 1 symbol.

[0152] A Bandwidth Part (BWP) (which may also be called a partial bandwidth, etc.) may represent a subset of consecutive common resource blocks (common RBs) for a certain numerology in a certain carrier. Here, the common RB may be specified by the index of the RB based on the common reference point of the carrier. The PRB is defined in a certain BWP and may be numbered within that BWP.

[0153] The BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). One or more BWPs may be set within one carrier for the UE.

[0154] At least one of the set BWPs may be active, and the UE may not be assumed to transmit and receive a predetermined signal / channel outside the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be read as "BWP".

[0155] The structures such as the above-described radio frames, sub-frames, slots, mini-slots, and symbols are merely illustrative. For example, the number of sub-frames included in a radio frame, the number of slots per sub-frame or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of sub-carriers included in an RB, and the number of symbols, symbol length, Cyclic Prefix (CP) length, etc. within a TTI can be variously changed.

[0156] The terms "connected" and "coupled", or any variations thereof, mean any direct or indirect connection or coupling between two or more elements, and can include the presence of one or more intermediate elements between two elements "connected" or "coupled" to each other. The coupling or connection between elements can be physical, logical, or a combination thereof. For example, "connected" may be read as "accessed". As used in this disclosure, two elements can be considered to be "connected" or "coupled" to each other using at least one of one or more wires, cables, and printed electrical connections, and also, by way of some non-limiting and non-exhaustive examples, electromagnetic energy having wavelengths in the radio frequency region, microwave region, and optical (both visible and invisible) region.

[0157] The reference signal can also be abbreviated as Reference Signal (RS) and may be called a Pilot depending on the applicable standard.

[0158] As used in this disclosure, the description "based on" does not mean "based only on" unless otherwise specified. In other words, the description "based on" means both "based only on" and "based at least on".

[0159] In the configuration of each of the above devices, the "means" may be replaced with a "section", "circuit", "device", or the like.

[0160] In the present disclosure, any reference to an element using designations such as "first", "second", etc. does not generally limit the quantity or order of those elements. These designations may be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, a reference to a first and a second element does not mean that only two elements can be employed there, or that the first element must precede the second element in any form.

[0161] In the present disclosure, when terms such as "include", "including" and their variants are used, these terms are intended to be inclusive, similar to the term "comprising". Further, the term "or" used in the present disclosure is not intended to be an exclusive disjunction.

[0162] In the present disclosure, for example, when articles are added by translation, such as a, an and the in English, the present disclosure may include that the nouns following these articles are in the plural form.

[0163] As used in this disclosure, the terms "determining" and "deciding" may encompass a wide variety of actions. "Determining" and "deciding" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database, or another data structure), ascertaining, and considering something as having been "determined" or "decided". Also, "determining" and "deciding" may include considering something as having been "determined" or "decided" after receiving (e.g., receiving information), transmitting (e.g., transmitting information), inputting, outputting, accessing (e.g., accessing data in memory), etc. Further, "determining" and "deciding" may include considering something as having been "determined" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. That is, "determining" and "deciding" may include considering something as having been "determined" or "decided" after performing some action. Also, "determining (deciding)" may be read as "assuming", "expecting", "considering", etc.

[0164] In this disclosure, the term "A and B are different" may mean that "A and B are different from each other". Note that the term may also mean that "A and B are each different from C". Terms such as "separated" and "coupled" may be interpreted in the same way as "different".

[0165] Although the present disclosure has been described in detail above, it is obvious to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the present disclosure defined by the claims. Therefore, the description of the present disclosure is for illustrative purposes only and does not have any limiting meaning for the present disclosure.

Explanation of Reference Signs

[0166] 10 Wireless communication system 20 NG-RAN 100 gNB 200 UE 210 Wireless signal transceiver 220 Amplifier section 230 Modulation / demodulation section 240 Control signal / reference signal processing section 250 Encoding / decoding section 260 Data transceiver 270 Control section 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus

Claims

1. a receiver for receiving downlink control information including a time domain resource allocation for an uplink channel; a transmitter that repeatedly transmits the uplink channel using a mapping type that is applied to repeated transmission in units of more than 14 symbols across a plurality of slots based on the downlink control information; A terminal comprising:

2. receiving downlink control information including a time domain resource allocation for an uplink channel; Repeatedly transmitting the uplink channel using a mapping type that is applied to repeated transmission in units of more than 14 symbols across a plurality of slots based on the downlink control information. A wireless communication method.

3. A wireless communication system including a base station and a terminal, the base station comprises a transmitter for transmitting downlink control information including a time domain resource allocation for an uplink channel; The terminal includes: A receiving unit for receiving the downlink control information; a transmitter that repeatedly transmits the uplink channel using a mapping type that is applied to repeated transmission in units of more than 14 symbols across a plurality of slots based on the downlink control information; Equipped with Wireless communication system.

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