terminal

Abstract

The terminal includes a transmitter that performs repetitive transmission of an uplink signal using an uplink channel, wherein the transmitter performs the repetitive transmission using non-continuous specific time slots allocated as transmission opportunities for the repetitive transmission.

Description

Technical Field

[0001] The present disclosure relates to a terminal performing wireless communication, and more particularly, to a terminal transmitting an uplink signal using an uplink channel. Background Art

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

[0003] In 3GPP Release (Release) 15 and Release 16 (NR), operations in multiple frequency bands (specifically, including FR1 (410 MHz to 7.125 GHz) and FR2 (24.25 GHz to 52.6 GHz)) are standardized.

[0004] In 3GPP Release 17, coverage enhancement in FR1 and FR2 became an issue (Non-Patent Document 1). This has led to expectations for improvements in channel quality for channels such as the PUSCH (Physical Uplink Shared Channel), the PDCCH (Physical Downlink Control Channel), and the PUCCH (Physical Uplink Control Channel).

[0005] Furthermore, Release 16 defines repetition Type A and repetition Type B as types (repetition types) of repeated transmission of signals using the PUSCH (hereinafter referred to as PUSCH repeated transmission) (Non-Patent Document 2).

[0006] Prior art literature

[0007] Non-patent literature

[0008] Non-Patent Document 1: "New SID on NR Coverage Enhancement," RP-193240, 3GPP TSGRAN Meeting #86, 3GPP, December 2019

[0009] Non-Patent Document 2: 3GPP TS38.214 V16.2.0 Summary of the Invention

[0010] However, since repetition Type A applies PUSCH repetition using consecutive time slots, PUSCH repetition cannot be applied in TDD mode, such as "DDDSU." "D" indicates a time slot used only in downlink symbols (hereinafter referred to as a D-slot), "U" indicates a time slot used only in uplink symbols (hereinafter referred to as a U-slot), and "S" indicates a time slot used in both downlink and uplink symbols (hereinafter referred to as an S-slot).

[0011] Repetition Type B, described above, treats symbols allocated for downlink as invalid symbols, allowing repeated PUSCH transmission using non-contiguous slots. However, since the number of PUSCH transmission opportunities is increased in D and S slots, signals using PUSCH cannot be transmitted in D slots, and the number of symbols available for PUSCH transmission in S slots is reduced. Furthermore, guard symbols are not treated as invalid symbols, so repetition Type B essentially assumes continuous slots.

[0012] The inventors conducted intensive research and, based on the knowledge that repeated PUSCH transmission using non-contiguous slots is not appropriately assumed in the above-mentioned technology, discovered the possibility of improving the channel quality of the PUSCH.

[0013] Therefore, the following disclosure has been made in view of the above circumstances, and an object of the present invention is to provide a terminal capable of improving channel quality.

[0014] The present disclosure provides a terminal including: a transmitter configured to repeatedly transmit an uplink signal using an uplink channel, wherein the transmitter performs the repeated transmission using non-continuous specific time slots allocated as transmission opportunities for the repeated transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a diagram schematically illustrating the overall configuration of the wireless communication system 10 .

[0016] Figure 2 is a diagram showing frequency ranges used in the wireless communication system 10 .

[0017] Figure 3 1 is a diagram showing a configuration example of a radio frame, a subframe, and a time slot used in the wireless communication system 10 .

[0018] Figure 4 This is a functional block diagram of UE200.

[0019] Figure 5 This is a diagram for explaining repeated transmission.

[0020] Figure 6 This is a diagram for explaining repeated transmission.

[0021] Figure 7 It is a diagram showing an operation example.

[0022] Figure 8 This is a diagram showing an operation example according to Modification Example 1.

[0023] Figure 9 This is a diagram showing an example of a PUSCH-Config information element (ASN.1 format).

[0024] Figure 10 This is a diagram for explaining repeated transmission according to Modification Example 2.

[0025] Figure 11 This is a diagram for explaining repeated transmission according to Modification Example 2.

[0026] Figure 12 This is a diagram showing an operation example according to Modification Example 3.

[0027] Figure 13 This is a diagram showing an example of a PUSCH-Config information element (ASN.1 format).

[0028] Figure 14 This is a diagram showing an operation example according to Modification Example 6.

[0029] Figure 15 This is a diagram showing an example of the hardware configuration of UE 200 . DETAILED DESCRIPTION

[0030] Hereinafter, the embodiment will be described with reference to the drawings. In addition, the same or similar reference numerals are given to the same functions and structures, and their description will be omitted as appropriate.

[0031] [Implementation Method]

[0032] (1) Overall schematic structure of wireless communication system

[0033] Figure 1 This is a schematic diagram of the overall structure of a wireless communication system 10 according to an embodiment. The wireless communication system 10 is a wireless communication system that complies with the 5G New Radio (NR) standard and includes a next-generation radio access network 20 (NG-RAN 20) and a terminal 200 (UE 200).

[0034] In addition, the wireless communication system 10 may be a wireless communication system that complies with a method called Beyond 5G, 5G Evolution, or 6G.

[0035] NG-RAN 20 includes a radio base station 100A (hereinafter referred to as gNB 100A) and a radio base station 100B (hereinafter referred to as gNB 100B). Figure 1 Example shown.

[0036] The NG-RAN 20 actually includes multiple NG-RAN nodes, specifically multiple gNBs (or ng-eNBs), which are connected to the 5G core network (5GC, not shown). The NG-RAN 20 and 5GC can be simply referred to as the "network."

[0037] gNB 100A and gNB 100B are 5G-compliant radio base stations that perform 5G-compliant wireless communications with UE 200. gNB 100A, gNB 100B, and UE 200 support Massive MIMO (Multiple-Input Multiple-Output), which generates highly directional beams (BMs) by controlling radio signals transmitted from multiple antenna elements; Carrier Aggregation (CA), which bundles and uses multiple Component Carriers (CCs); and Dual Connectivity (DC), which allows simultaneous communication of two or more transport blocks between the UE and two NG-RAN nodes.

[0038] Furthermore, the wireless communication system 10 supports multiple frequency ranges (FR). Figure 2 The frequency range used in the wireless communication system 10 is shown.

[0039] like Figure 2 As shown, the wireless communication system 10 supports FR1 and FR2. The frequency bands of each FR are as follows.

[0040] FR1: 410MHz~7.125GHz

[0041] FR2: 24.25GHz to 52.6GHz

[0042] In FR1, a sub-carrier spacing (SCS) of 15, 30, or 60 kHz can be used, and a bandwidth (BW) of 5 to 100 MHz can be used. FR2 has a higher frequency than FR1, and an SCS of 60 or 120 kHz (including 240 kHz) can be used, and a bandwidth (BW) of 50 to 400 MHz can be used.

[0043] In addition, SCS can be interpreted as a numerology. The numerology is defined in 3GPP TS 38.300 and corresponds to a subcarrier spacing in the frequency domain.

[0044] Furthermore, the wireless communication system 10 supports frequency bands higher than FR2. Specifically, the wireless communication system 10 supports frequency bands exceeding 52.6 GHz and extending up to 114.25 GHz. For ease of explanation, this high frequency band is referred to as "FR2x."

[0045] To solve this problem, 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 subcarrier spacing (SCS) can be applied.

[0046] Figure 3 An example of the configuration of radio frames, subframes, and time slots used in the wireless communication system 10 is shown.

[0047] like Figure 3 As shown, one time slot consists of 14 symbols. The larger (wider) the SCS is, the shorter the symbol period (and the time slot period) is. SCS is not limited to Figure 3 The interval (frequency) shown is, for example, 480 kHz, 960 kHz, etc.

[0048] Furthermore, the number of symbols constituting one slot may not necessarily be 14 symbols (e.g., 28 or 56 symbols). Furthermore, the number of slots per subframe may differ depending on the SCS.

[0049] in addition, Figure 3 The time direction (t) shown may be referred to as the time domain, symbol period, or symbol time, etc. Furthermore, the frequency direction may be referred to as the frequency domain, resource block, subcarrier, or bandwidth part (BWP).

[0050] DMRS is a type of reference signal used for various channels. Unless otherwise specified, the term "DMRS" used for downlink data channels (specifically, PDSCH (Physical Downlink Shared Channel)) can also refer to DMRS used for uplink data channels (specifically, PUSCH (Physical Uplink Shared Channel)).

[0051] DMRS may be used by the device (eg, as part of coherent demodulation) for channel estimation in UE 200. DMRS may only be present in resource blocks (RBs) used in PDSCH transmissions.

[0052] DMRS can have multiple mapping types. Specifically, DMRS has mapping type A and mapping type B. In mapping type A, the initial DMRS is configured in the second or third codeword of the time slot. In mapping type A, the DMRS can be mapped based on the time slot boundary, regardless of where the actual data transmission starts in the time slot. The reason for configuring the initial DMRS in the second or third codeword of the time slot can be explained as the initial DMRS is configured after the control resource set (CORESET).

[0053] In mapping type B, the first DMRS may be allocated in the first symbol of data allocation. That is, the position of the DMRS may be assigned relative to the position where data is allocated, not relative to the slot boundary.

[0054] In addition, DMRS can be of multiple types. Specifically, DMRS has Type 1 and Type 2. Type 1 and Type 2 differ in mapping in the frequency domain and the maximum number of orthogonal reference signals. Type 1 can output a maximum of four orthogonal signals through a single-symbol DMRS, and Type 2 can output a maximum of eight orthogonal signals through a double-symbol DMRS.

[0055] (2) Functional block structure of wireless communication system

[0056] Next, the functional block configuration of the wireless communication system 10 will be described. Specifically, the functional block configuration of the UE 200 will be described.

[0057] Figure 4 This is a functional block diagram of UE200. Figure 4 As shown, UE 200 includes a radio signal transceiver 210 , an amplifier 220 , a modem 230 , a control signal / reference signal processor 240 , an encoder / decoder 250 , a data transceiver 260 , and a controller 270 .

[0058] The radio signal transceiver 210 transmits and receives NR-compliant radio signals. It supports Massive MIMO, CA (combining multiple CCs), and DC (simultaneous communication between the UE and two NG-RAN nodes).

[0059] In the embodiment, the wireless signal transceiver 210 constitutes a transmitter that performs repeated transmission of an uplink signal using an uplink channel. The wireless signal transceiver 210 performs repeated transmission using a non-continuous specific time slot allocated as a transmission opportunity for repeated transmission. The following describes a case where the uplink channel is a PUSCH. Details of repeated transmission will be described later (see Figure 5 、 6 ).

[0060] 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 modem unit 230 to a predetermined power level. The amplifier unit 220 also amplifies the RF signal output from the wireless signal transceiver unit 210.

[0061] The modem unit 230 performs data modulation / demodulation, transmit power settings, and resource block allocation for each predetermined communication destination (gNB 100 or another gNB). Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform-Spread (DFT-S-OFDM) can be applied in the modem unit 230. DFT-S-OFDM can be used not only in the uplink (UL) but also in the downlink (DL).

[0062] The control signal / reference signal processing unit 240 performs processing related to various control signals transmitted and received by the UE 200 and processing related to various reference signals transmitted and received by the UE 200 .

[0063] Specifically, the control signal / reference signal processing unit 240 receives various control signals, such as radio resource control (RRC) layer control signals, transmitted from the gNB 100 via predetermined control channels. Furthermore, the control signal / reference signal processing unit 240 transmits various control signals to the gNB 100 via predetermined control channels.

[0064] The control signal / reference signal processing unit 240 performs processing using reference signals (RS) such as a demodulation reference signal (DMRS) and a phase tracking reference signal (PTRS).

[0065] DMRS is a terminal-specific reference signal (pilot signal) known between the base station and the terminal for estimating a fading channel used for data demodulation. PTRS is a terminal-specific reference signal for estimating phase noise, a problem in high-frequency bands.

[0066] In addition to DMRS and PTRS, reference signals also include Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS), and Positioning Reference Signal (PRS) for position information.

[0067] In addition, 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 the Random Access Radio Network Temporary Identifier (RA-RNTI), and Physical Broadcast Channel (PBCH).

[0068] In addition, data channels include PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel). Data refers to data transmitted via data channels. Data channels can also be replaced by shared channels.

[0069] The control signal / reference signal processing unit 240 receives downlink control information (DCI). DCI includes fields storing DCI formats (DCI formats), carrier indicator (CI), BWP indicator (BWP indicator), FDRA (Frequency Domain Resource Allocation), TDRA (Time Domain Resource Allocation), MCS (Modulation and Coding Scheme), HPN (HARQ Process Number), NDI (New Data Indicator), RV (Redundancy Version), and other fields.

[0070] 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 using the BWP indicator is set using the information element (BandwidtPart-Config) included in the RRC message. The value stored in the FDRA field is an information element that specifies the frequency domain resources to which the DCI is applied. The frequency domain resources are determined by the value stored in the FDRA field and the information element (RAType) included in the RRC message. The value stored in the TDRA field is an information element that specifies the time domain resources to which the DCI is applied. The time domain resources are determined by the value stored in the TDRA field and the information elements (pdsch-TimeDomainAllocationList, pusch-TimeDomainAllocationList) included in the RRC message. The time domain resources can be determined using the value stored in the TDRA field and a 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 determined by the value stored in the MCS field and an MCS table. The MCS table can be specified via an RRC message or determined 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 field is an information element used to determine whether the data to which the DCI is applied is initially transmitted. The value stored in the RV field is an information element that specifies the redundancy of the data to which the DCI is applied.

[0071] The encoding / decoding unit 250 performs data segmentation / concatenation and channel coding / decoding, etc. according to each predetermined communication destination (gNB 100 or other gNB).

[0072] Specifically, the encoding / decoding unit 250 divides the data output from the data transceiver 260 into predetermined sizes and performs channel coding on the divided data. In addition, the encoding / decoding unit 250 decodes the data output from the modulation / demodulation unit 230 and concatenates the decoded data.

[0073] The data transceiver 260 transmits and receives Protocol Data Units (PDUs) and Service Data Units (SDUs). Specifically, it assembles and disassembles PDUs and SDUs across multiple layers, including the Medium Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP). Furthermore, the data transceiver 260 performs data error correction and retransmission control based on Hybrid ARQ (Hybrid Automatic Repeat Request).

[0074] The control unit 270 controls each functional block constituting the UE 200. In particular, in this embodiment, the control unit 270 controls the repeated transmission related to the above-mentioned PUSCH. The details of the repeated transmission will be described later (see Figure 5 、 6 ).

[0075] (3) Repeated sending

[0076] The following describes repeated transmission related to the PUSCH. This description focuses on the case where the TDD mode is "DDDSU." "D" represents a time slot used only in downlink symbols (hereinafter referred to as a D-slot), "U" represents a time slot used only in uplink symbols (hereinafter referred to as a U-slot), and "S" represents a time slot used in both downlink and uplink symbols (hereinafter referred to as an S-slot). "K" represents the number of time slots allocated as transmission opportunities (PUSCH transmission occasions) for repeated transmission.

[0077] (3.1) Existing repeated transmission

[0078] The following describes the repetition type related to the existing repeated transmission. Figure 5 As shown in FIG. 1 , existing repetition types include repetition type A and repetition type B.

[0079] like Figure 5 As shown in the upper section, repetition type A is a repetition type that uses consecutive time slots and applies repeated PUSCH transmission. Therefore, repetition type A is applied when the TDD mode includes consecutive U time slots. Repetition type A can also be used when the codeword at the same position in the time slot is used for repeated transmission.

[0080] like Figure 5 As shown in the lower section of the figure, repetition Type B is a repetition type that treats symbols assigned to the uplink as valid and symbols assigned to the downlink as invalid. In other words, repetition Type B can also be applied when the TDD mode includes non-contiguous U slots. Repetition Type B can also be used when symbols at different positions within a slot are repeatedly transmitted.

[0081] However, in repetition Type B, only symbols allocated for downlink transmission are treated as invalid, and D and S slots are also counted as slots allocated for PUSCH transmission. In other words, D and S slots are treated as slots allocated for PUSCH transmission, but invalid symbols are simply not used for uplink signal transmission using PUSCH.

[0082] As described above, the conventional repetition type is based on the premise that continuous time slots are allocated as PUSCH transmission occasions.

[0083] (3.2) Repeated transmission involved in the implementation method

[0084] The following describes the repeated transmission involved in the implementation method. Figure 6 As shown, in the repeated transmissions involved in the embodiments, non-contiguous specific time slots are allocated as PUSCH transmission occasions. For example, U time slots are allocated as specific time slots, while D time slots and S time slots are not. S time slots can also be allocated as specific time slots. In other words, time slots other than specific time slots are not counted as time slots allocated as PUSCH transmission occasions. Furthermore, the interval between specific time slots in TDD mode can be referred to as PUSCH-SlotAllocation.

[0085] That is, in the embodiment, by newly introducing the concept of "non-continuous specific time slots" allocated as PUSCH transmission occasions, it is possible to appropriately perform repeated transmission related to the PUSCH. Furthermore, it is possible to achieve coverage enhancement related to the PUSCH.

[0086] Among them, about Figure 6 The repetition type of repeated transmission shown above can be considered as follows.

[0087] First, Figure 6 The repetition type shown can be considered as Figure 5 In this case, non-consecutive specific time slots can be treated virtually as continuous time slots. Figure 6 The repetition type shown can be considered as Figure 5 In this case, non-consecutive specific time slots can be virtually processed as continuous time slots. Figure 6 The repetition type shown can be considered as Figure 5 Extensions of repetition Type A and repetition Type B are shown.

[0088] second, Figure 6 The repetition type shown can be considered as the same as Figure 5 A new repetition type (for example, repetition type C) is shown which is different from repetition type A and repetition type B.

[0089] (4) Action example

[0090] An operation example of the embodiment will be described below.

[0091] like Figure 7 As shown, in step S10, UE 200 receives DCI from NG RAN 20. DCI includes TDRA and the like.

[0092] In step S11 , the UE 200 repeatedly transmits an uplink signal using the PUSCH using non-continuous specific time slots allocated as PUSCH transmission occasions.

[0093] (5) Actions and effects

[0094] In the embodiment, by newly introducing the concept of "non-continuous specific time slots" allocated as PUSCH transmission occasions, it is possible to appropriately perform repeated transmission related to the PUSCH. Furthermore, it is possible to achieve coverage enhancement related to the PUSCH.

[0095] [Change Example 1]

[0096] Hereinafter, a modification example 1 of the embodiment will be described. The following mainly describes the differences from the embodiment.

[0097] In Modification Example 1, a case will be described where the allocation of a specific time slot is explicitly notified from the NG RAN 20. For example, the UE 200 receives the information element indicating the above-mentioned pusch-SlotAllocation from the NG RAN 20.

[0098] As mentioned above, pusch-SlotAllocation is the interval of specific time slots in TDD mode. The interval of specific time slots can be determined by the number of time slots that exist between specific time slots (in Figure 6 The interval of a specific time slot can also be represented by the position of the next specific time slot (in Figure 6 The pusch-SlotAllocation may be represented by a predetermined value (e.g., ENUMERATED(n1, n2, n3, n4)) or an arbitrary value (e.g., INTEGER(0...20)).

[0099] (1) Action example

[0100] The following describes an operation example of Modification Example 1.

[0101] like Figure 8 As shown, in step S20, UE200 receives an RRC message. The RRC message includes an information element indicating pusch-SlotAllocation. Figure 9 As shown, pusch-SlotAllocation can be an extended IE of PUSCH-Configinformation.

[0102] In step S21, UE 200 receives DCI from NG RAN 20. DCI includes TDRA and the like.

[0103] In step S22, the UE 200 determines a specific time slot according to the pusch-SlotAllocation. The UE 200 repeatedly transmits an uplink signal using the PUSCH using the non-continuous specific time slots allocated as PUSCH transmission occasions.

[0104] [Change Example 2]

[0105] A second modification of the embodiment will be described below, with the differences from the embodiment being mainly described below.

[0106] In the embodiment, the case where the TDD mode is "DDDSU" is described. In contrast, in Modification 2, the case where the TDD mode is "DDDSUU" is described. That is, in Modification 2, the case where the TDD mode includes consecutive U slots is described.

[0107] First, as Figure 10 As shown in FIG, all U time slots included in the TDD mode can be allocated as specific time slots. Figure 11 As shown, a portion of U slots included in the TDD mode may be allocated as specific slots.

[0108] In these cases, pusch-SlotAllocation can be defined as the interval of specific time slots (U time slots) with the same location in TDD mode. For example, the interval of specific time slots can be determined by the number of time slots that exist between specific time slots (in Figure 10 and Figure 11 The interval of a specific time slot can also be represented by the position of the next specific time slot (in Figure 10 and Figure 11 Indicated by "6" in the figure.

[0109] In addition, Figure 10 In the present invention, it should be noted that in TDD mode, specific time slots are continuous, but as a whole, non-contiguous specific time slots are allocated as PUSCH transmission occasions.

[0110] [Change Example 3]

[0111] A third modification of the embodiment will be described below, with the differences from the second modification mainly being described below.

[0112] In Modification 3, a case where the allocation of specific time slots is explicitly notified from the NG RAN 20 is described. For example, the UE 200 receives an information element indicating the number of consecutive specific time slots (e.g., pusch-Duration) in the TDD mode from the NG RAN 20. Figure 10 In the case shown, pusch-Duration can be "2". Figure 11 In the case shown, pusch-Duration may be "1". pusch-SlotAllocation may be represented by a predetermined value (e.g., ENUMERATED(n1, n2)). If pusch-Duration is not set, a default value may be used. The default value may be "1(slot)".

[0113] In addition to the information element indicating pusch-Duration, UE 200 may also receive the information element indicating the aforementioned pusch-SlotAllocation. That is, UE 200 may determine a specific time slot based on pusch-SlotAllocation and pusch-Duration.

[0114] (1) Action example

[0115] The following describes an operation example of Modification Example 3.

[0116] like Figure 12 As shown, in step S30, UE200 receives an RRC message. The RRC message includes an information element indicating pusch-Duration. Figure 13 As shown, pusch-SlotAllocation may be an extended IE of PUSCH-Config information. The RRC message may include an information element indicating pusch-SlotAllocation.

[0117] In step S31, UE 200 receives DCI from NG RAN 20. DCI includes TDRA and the like.

[0118] In step S32, the UE 200 determines a specific time slot based on pusch-Duration. The UE 200 can determine a specific time slot based on pusch-SlotAllocation. The UE 200 repeatedly transmits an uplink signal using the PUSCH using non-continuous specific time slots allocated as PUSCH transmission occasions.

[0119] [Change Example 4]

[0120] Modification 4 of the embodiment will be described below. The following mainly describes the differences from Modification 1 and Modification 3.

[0121] In Modifications 1 and 3, the case where the allocation of specific time slots (intervals or consecutive numbers) is explicitly notified from the NG RAN 20 has been described. In contrast, in Modification 4, the UE 200 can implicitly determine the specific time slots.

[0122] Specifically, UE200 determines a specific time slot based on the time division multiplexing mode (hereinafter referred to as TDD mode) assigned to UE200. For example, UE200 may determine a U time slot based on the TDD mode and determine the determined U time slot as a specific time slot. In other words, UE200 may at least not determine the D time slot included in the TDD mode as a specific time slot. UE200 may determine the S time slot included in the TDD mode as a specific time slot, or may not determine the S time slot included in the TDD mode as a specific time slot.

[0123] The UE 200 may determine the TDD mode based on the tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated. The tdd-UL-DL-ConfigurationCommon may be an information element included in a broadcast message (SIB; System Information Block) received from the NG RAN 20. The tdd-UL-DL-ConfigurationDedicated may be an information element included in an RRC message. The UE 200 may determine the TDD mode based on the slotFormatCombination included in the DCI.

[0124] [Change Example 5]

[0125] Modification 5 of the embodiment will be described below. Differences from Modification 1 and Modification 3 will be mainly described below.

[0126] In Modifications 1 and 3, the case where the allocation (interval or number of consecutive timeslots) of specific time slots is explicitly notified from the NG RAN 20 has been described. In contrast, in Modification 5, specific time slots may be predetermined according to the TDD mode.

[0127] Specifically, in TDD mode Figure 6 In the case of "DDDSU" shown in FIG, the interval of a specific time slot can be predetermined. In addition, in the TDD mode is Figure 9 (or Figure 10 ) shown in “DDDSUU”, the interval of the specific time slot and the consecutive number of specific time slots can be predetermined.

[0128] [Example 6]

[0129] A sixth modification of the embodiment will be described below. Differences from the embodiment will be mainly described below.

[0130] In Modification Example 6, UE 200 transmits a message ( Figure 14 Step S40). UE Capability may include the following information elements.

[0131] For example, UE Capability may include an information element indicating whether repeated transmission using non-contiguous specific time slots is supported by extending the above-mentioned repetition Type A. UE Capability may include an information element indicating whether repeated transmission using non-contiguous specific time slots is supported by extending the above-mentioned repetition Type B. In addition, UE Capability may include an information element indicating whether repeated transmission using non-contiguous specific time slots is supported by extending repetition Type A and repetition Type B. UE Capability may include an information element indicating whether a newly introduced repetition Type (for example, the above-mentioned repetition Type C) is supported. Hereinafter, these information elements are referred to as information elements indicating whether support is supported.

[0132] For example, UE Capability may include an information element indicating support for each frequency. This information element may include an information element specifying all frequencies, an information element indicating a dedicated frequency, or an information element indicating a frequency range (e.g., FR1, FR2, etc.). The information element specifying all frequencies can indicate whether UE 200 supports it.

[0133] For example, UE Capability may include information elements indicating support for each duplex mode. Such information elements may include information elements specifying all duplex modes or information elements indicating a specific duplex mode (TDD, FDD, etc.). Information elements specifying all duplex modes can indicate whether UE 200 supports them.

[0134] [Other embodiments]

[0135] As mentioned above, although the content of this invention was demonstrated based on embodiment, this invention is not limited to these descriptions, and it is obvious to those skilled in the art that various deformation|transformation and improvement are possible.

[0136] Although not specifically mentioned in the embodiments, in the aforementioned repetition type B, when repeated transmission using non-contiguous specific time slots is configured, an extension can be implemented to change the handling of invalid symbols from "drop" to "shift." "Drop" means that invalid symbols are counted as PUSCH transmission occasions, while "shift" means that invalid symbols are counted as PUSCH transmission occasions. In this case, S time slots containing a mixture of invalid and valid symbols can be counted as PUSCH transmission occasions.

[0137] In the embodiments, the PUSCH is exemplified as a channel to which repeated transmission using non-contiguous specific time slots is applied. However, the embodiments are not limited thereto. The embodiments can be applied to a channel determined to be repeatedly transmitted using consecutive time slots as an extension of repeated transmission. For example, the channel to which repeated transmission using non-contiguous specific time slots is applied may be the PUCCH.

[0138] Although not specifically mentioned in the embodiment, UE 200 may receive a message including an information element indicating whether repeated transmission using non-contiguous specific time slots is configured. Such a message may be an RRC message.

[0139] In addition, the block diagrams ( Figure 4 ) shows blocks in units of functions. These functional blocks (structural parts) are implemented by any combination of at least one of hardware and software. In addition, there is no particular limitation on the implementation method of each functional block. That is, each functional block can be implemented using a device that is physically or logically combined, or it can be implemented by connecting two or more physically or logically separated devices directly or indirectly (for example, using wired or wireless connections) and using these multiple devices. The functional block can also be implemented by combining software with the above-mentioned one device or the above-mentioned multiple devices.

[0140] Functionally, these include, but are not limited to, judging, deciding, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. For example, a functional block (structural unit) that enables the transmission function is called a transmitting unit or a transmitter. In short, as described above, there is no particular limitation on the implementation method.

[0141] Furthermore, the above-mentioned UE 200 (the device) may also function as a computer that performs the processing of the wireless communication method of the present disclosure. Figure 15 FIG. 1 is a diagram showing an example of the hardware structure of the device. Figure 15 As shown, the device may also be configured as a computer device including a processor 1001 , a memory 1002 (memory), a storage 1003 (storage), a communication device 1004 , an input device 1005 , an output device 1006 , and a bus 1007 .

[0142] In the following description, the word "device" can be replaced with "circuit," "device," "unit," etc. The hardware structure of the device may include one or more of the devices shown in the figures, or may exclude some of the devices.

[0143] Each functional block of the device (refer to Figure 4 ) is implemented by any hardware element or combination of hardware elements of the computer device.

[0144] In addition, each function in the device is implemented by the following method: predetermined software (program) is read into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations and controls the communication of the communication device 1004 or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0145] The processor 1001 controls the entire computer by, for example, executing an operating system. The processor 1001 may be composed of a central processing unit (CPU) including an interface with peripheral devices, a control unit, a calculation unit, registers, and the like.

[0146] In addition, the processor 1001 reads a program (program code), a software module or data from at least one of the memory 1003 and the communication device 1004 to the memory 1002, and performs various processes accordingly. As a program, a program that causes the computer to perform at least a part of the actions described in the above-mentioned embodiment is used. In addition, with respect to the various processes described above, although it is described that the various processes are performed by one processor 1001, the various processes described above can also be performed simultaneously or sequentially by two or more processors 1001. The processor 1001 can also be installed by one or more chips. In addition, the program can also be sent from the network via a telecommunications line.

[0147] Memory 1002 is a computer-readable recording medium and may be composed of, for example, at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a random access memory (RAM). Memory 1002 may also be referred to as a register, a cache, or a main memory (main storage device). Memory 1002 can store programs (program code), software modules, and the like that can execute the method according to an embodiment of the present disclosure.

[0148] The memory 1003 is a computer-readable recording medium, and may be composed of, for example, at least one of an optical disc such as a CD-ROM (Compact Disc ROM), a hard disk drive, a floppy disk, a magneto-optical disc (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, and the like. The memory 1003 may also be referred to as an auxiliary storage device. The above-mentioned recording medium may be, for example, other appropriate media such as a database, a server, or the like that includes at least one of the memory 1002 and the memory 1003.

[0149] The communication device 1004 is hardware (transceiver) used for communication between computers via at least one of a wired network and a wireless network, and may also be called a network device, a network controller, a network card, a communication module, etc.

[0150] For example, the communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD).

[0151] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to the outside (e.g., a display, speaker, LED light, etc.). Alternatively, the input device 1005 and the output device 1006 may be integrally formed (e.g., a touch panel).

[0152] Furthermore, the processor 1001 and the memory 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured using a single bus or may be configured using separate buses for each device.

[0153] 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), or a field-programmable gate array (FPGA), and some or all of the functional blocks may be implemented using such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0154] In addition, the notification of information is not limited to the form / implementation method described in the present disclosure, and other methods may also be used. For example, the notification of information may be implemented through physical layer signaling (e.g., downlink control information (Downlink Control Information: DCI), uplink control information (Uplink Control Information: UCI)), high-layer signaling (e.g., RRC signaling, medium access control (Medium Access Control: MAC) signaling, broadcast information (Master Information Block (Master Information Block: MIB), System Information Block (System Information Block: SIB)), other signals or a combination thereof. In addition, RRC signaling may also be referred to as an RRC message, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.

[0155] Each form / embodiment described in this disclosure may also be applied to at least one of 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, UWB (Ultra-WideBand), Bluetooth (registered trademark), systems using other appropriate systems, and next-generation systems extended therefrom. Furthermore, a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G) may also be applied.

[0156] The processing procedures, timings, and flows of each form / implementation described in this disclosure may be performed in a different order unless there is a conflict. For example, the methods described in this disclosure use an illustrative order to present the elements of various steps, but are not limited to the specific order presented.

[0157] In the present disclosure, specific actions performed by a base station are sometimes performed by its upper node depending on the situation. In a network consisting of one or more network nodes including a base station, it is obvious that various actions performed to communicate 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, considering an MME or S-GW, but not limited to these). In the above, the case where there is only one other network node other than the base station is illustrated, but the other network node may also be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0158] Information, signals (information, etc.) can be output from a higher layer (or lower layer) to a lower layer (or higher layer), and can also be input or output via multiple network nodes.

[0159] Input or output information can be stored in a specific location (e.g., memory) or managed using a management table. Input or output information can be overwritten, updated, or appended. Output information can also be deleted. Input information can also be sent to other devices.

[0160] The determination may be made using a value represented by one bit (0 or 1), a Boolean value (Boolean: true or false), or a comparison of numerical values ​​(for example, comparison with a predetermined value).

[0161] Each form / implementation described in this disclosure may be used individually or in combination, and may be switched between them depending on the execution. Furthermore, notification of scheduled information is not limited to being performed explicitly (e.g., a notification of "yes X") but may also be performed implicitly (e.g., not notifying the scheduled information).

[0162] Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, shall be interpreted broadly to refer to instructions, sets of instructions, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0163] Furthermore, software, commands, information, and the like may be transmitted and received via a transmission medium. For example, if software is transmitted from a web page, server, or other remote source using at least one of a wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and a wireless technology (infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0164] The information, signals, etc. described in this disclosure may also be represented using any of a variety of different technologies. For example, data, commands, instructions, information, signals, bits, symbols, chips, etc. that may be referred to in the entire description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0165] In addition, the terms used in this disclosure and those necessary for understanding this disclosure 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). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, etc.

[0166] As used in this disclosure, the terms "system" and "network" may be used interchangeably.

[0167] In addition, the information, parameters, etc. described in this disclosure may be represented by absolute values, relative values ​​relative to predetermined values, or other corresponding information. For example, wireless resources may also be indicated by indexes.

[0168] The names used for the above parameters are not limiting in any way. Furthermore, the formulas and the like using these parameters may sometimes differ from those explicitly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by appropriate names, and the various names assigned to these various channels and information elements are not limiting in any way.

[0169] 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" are used interchangeably. Base stations are also sometimes referred to as macrocells, small cells, femtocells, and picocells.

[0170] A base station can accommodate one or more (for example, three) cells (also called sectors). When a base station accommodates multiple cells, the base station's overall coverage area can be divided into multiple smaller areas, each of which can also provide communication services through a base station subsystem (for example, a small base station (Remote Radio Head: RRH) for indoor use).

[0171] The terms "cell" or "sector" refer to a portion or the entirety of a coverage area of ​​at least one of a base station and a base station subsystem that provides communication services within the coverage area.

[0172] In the present disclosure, terms such as “mobile station (MS)”, “user terminal (user terminal)”, “user equipment (UE)”, and “terminal” may be used interchangeably.

[0173] For mobile stations, those skilled in the art sometimes also use the following terms to refer to them: 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 appropriate terms.

[0174] 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. In addition, 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 means of transportation (e.g., a car, an airplane, etc.), a mobile body that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0175] In addition, the base station in the present disclosure can also be replaced by a mobile station (user terminal, the same below). For example, regarding a structure in which the communication between a base station and a mobile station is replaced by communication between multiple mobile stations (for example, it can also be called device-to-device (Device-to-Device: D2D), vehicle-to-everything (Vehicle-to-Everything: V2X), etc.), the various forms / implementations of the present disclosure can also be applied. In this case, it is also possible to set a structure in which the mobile station has the functions of the base station. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can also be replaced by side channels.

[0176] Likewise, the mobile station in the present disclosure may be replaced by a base station. In this case, the base station may have the same functions as the mobile station.

[0177] A radio frame may be composed of one or more frames in the time domain. In the time domain, one or more frames may be referred to as subframes.

[0178] A subframe may consist of one or more time slots in the time domain. A subframe may be of a fixed time length (eg, 1 ms) that is independent of numerology.

[0179] A parameter set may be a communication parameter applied to at least one of the transmission and reception of a signal or channel. For example, the parameter set may include at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering performed by the transceiver in the frequency domain, specific windowing performed by the transceiver in the time domain, and the like.

[0180] A 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. A slot may be a time unit based on a parameter set.

[0181] A time slot may contain multiple mini-slots. Each mini-slot may consist of one or more symbols in the time domain. Furthermore, a mini-slot may also be referred to as a sub-slot. A mini-slot may consist of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in time units larger than a mini-slot may be referred to as PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may be referred to as PDSCH (or PUSCH) mapping type B.

[0182] Radio frame, subframe, time slot, mini-time slot, and symbol all represent time units for signal transmission. Radio frame, subframe, time slot, mini-time slot, and symbol may be referred to by other corresponding names.

[0183] For example, a subframe can be called a transmission time interval (TTI), multiple consecutive subframes can be called a TTI, and a slot or minislot can be called a TTI. That is, at least one of a subframe and a TTI can be a subframe (1ms) in existing LTE, a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. Furthermore, the unit representing a TTI can be a slot, a minislot, or the like, rather than a subframe.

[0184] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communications. For example, in the LTE system, a base station schedules the allocation of radio resources (such as the frequency bandwidth and transmit power available to each user terminal) to each user terminal using TTIs. The definition of TTI is not limited to this.

[0185] A TTI can be a unit of time for transmitting data packets (transport blocks), code blocks, code words, etc. after channel coding, or a unit of processing for scheduling, link adaptation, etc. Furthermore, when a TTI is assigned, the time interval (e.g., the number of symbols) to which a transport block, code block, code word, etc. is actually mapped can be shorter than the TTI.

[0186] In addition, when one time slot or one mini-time slot is referred to as a TTI, one or more TTIs (i.e., one or more time slots or one or more mini-time slots) can constitute the minimum time unit of scheduling. In addition, the number of time slots (mini-time slots) constituting the minimum time unit of scheduling can be controlled.

[0187] A TTI with a time length of 1 ms is also called a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a time slot, etc.

[0188] In addition, for long TTI (for example, normal TTI, subframe, etc.), it can be replaced with a TTI with a time length of more than 1ms, and for short TTI (for example, shortened TTI, etc.), it can be replaced with a TTI length that is smaller than long TTI (longTTI) and has a TTI length of more than 1ms.

[0189] A resource block (RB) is a unit of resource allocation in the time and frequency domains. In the frequency domain, it can contain one or more consecutive subcarriers. The number of subcarriers contained in an RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers contained in an RB can also be determined by the parameter set.

[0190] In addition, the time domain of an RB may include one or more symbols and may be the length of one slot, one mini-slot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0191] In addition, one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, and the like.

[0192] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0193] A bandwidth part (BWP) (also known as a fractional bandwidth) represents a subset of contiguous common resource blocks (RBs) used for a particular parameter set within a carrier. Common RBs can be identified by their index relative to the common reference point for that carrier. PRBs are defined within a BWP and numbered within that BWP.

[0194] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for a UE within one carrier.

[0195] At least one of the configured BWPs may be active, and it is not assumed that the UE transmits or receives predetermined signals / channels outside of the activated BWP. In addition, "cell", "carrier", etc. in the present disclosure may be replaced with "BWP".

[0196] The above-described structures of radio frames, subframes, slots, mini-slots, and symbols are merely examples. For example, various modifications may be made to the structures including the number of subframes in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots in a slot, the number of symbols and RBs in a slot or mini-slot, the number of subcarriers in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length.

[0197] The terms "connected", "coupled" or all variations of these terms are intended to indicate any direct or indirect connection or combination between two or more elements, including the situation where there is one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The combination or connection between elements can be a physical combination or connection, a logical combination or connection, or a combination of these. For example, "access" can be used to replace "connection". In the context of the present disclosure, two elements can be considered to be "connected" or "coupled" to each other by using at least one of one or more wires, cables and printed electrical connections, and as some non-limiting and non-inclusive examples, by using electromagnetic energy with a wavelength in the wireless frequency domain, microwave region and light (including both visible and invisible) region.

[0198] The reference signal may be referred to as Reference Signal (RS) for short, or may be referred to as a pilot signal depending on the applied standard.

[0199] The phrase "according to" used in this disclosure does not mean "only according to" unless otherwise expressly stated. In other words, the phrase "according to" means both "only according to" and "at least according to."

[0200] The "unit" in the configuration of each of the above-mentioned devices can be replaced with a "section", "circuit", "device", etc.

[0201] Any reference to an element using the terms "first," "second," etc., as used in this disclosure, does not necessarily limit the number or order of these elements. These terms are used in this disclosure as a convenient way to distinguish between two or more elements. Therefore, a reference to a first and a second element does not imply that only two elements can be used or that the first element must precede the second element in any form.

[0202] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, the term "or" used in this disclosure does not mean an exclusive OR.

[0203] In the present disclosure, when an article is added by translation, such as a, an, and the in English, the present disclosure also includes cases where the noun following the article is in plural form.

[0204] As used in this disclosure, terms such as "determining" and "determining" sometimes encompass a variety of actions. For example, "determining" and "judging" may include considering matters that have been "judged" or "determined" as matters that have been "judged," "determined," or the like, such as calculating, computing, processing, deriving, investigating, looking up (e.g., searching in a table, database, or other data structure), or ascertaining. Furthermore, "determining" and "receiving" (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, or accessing (e.g., accessing data in a memory) may be considered matters that have been "judged," "determined," or the like. Furthermore, "determining" and "resolving" may include matters that have been "judged," "selecting," choosing, establishing, or comparing, etc. That is, "determining" and "judging" may include matters that have been "judged," "determined," or the like. Furthermore, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)” and the like.

[0205] In this disclosure, the phrase "A and B are different" may also mean "A and B are different from each other." Furthermore, the phrase may also mean "A and B are each different from C." Terms such as "separate" and "combined" may also be interpreted in the same way as "different."

[0206] While the present disclosure has been described in detail above, it should be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in various modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is for illustrative purposes only and does not have any limiting meaning on the present disclosure.

[0207] Description of labels:

[0208] 10 Wireless Communication Systems

[0209] 20 NG-RAN

[0210] 100 gNB

[0211] 200 UE

[0212] 210 Wireless Signal Transceiver

[0213] 220 Amplifier

[0214] 230 Modem Unit

[0215] 240 Control signal and reference signal processing unit

[0216] 250 Encoding / Decoding Unit

[0217] 260 Data Transceiver Department

[0218] 270 Control Department

[0219] 1001 Processor

[0220] 1002 Memory

[0221] 1003 Memory

[0222] 1004 Communication device

[0223] 1005 Input Device

[0224] 1006 Output Device

[0225] 1007 Bus

Claims

1. A terminal, wherein: The terminal has: a transmitting unit that performs repetitive transmission of an uplink signal using an uplink channel; and a control unit that determines, based on the TDD mode set for the terminal, non-continuous specific time slots to be allocated as transmission time slots for the repeated transmission, The transmitting unit performs the repeated transmission using the specific time slot.

2. The terminal according to claim 1, wherein The terminal includes a receiving unit configured to receive system information including an information element indicating the TDD mode.

3. The terminal according to claim 1, wherein: The terminal includes a receiving unit configured to receive radio resource control information including an information element indicating the TDD mode. The terminal according to claim 1 , wherein: The transmitting unit transmits a message including an information element related to the capability of the repeated transmission using the specific time slot.

5. A base station, wherein: The base station communicates with the terminal, and the base station has: a receiving unit that repeatedly receives an uplink signal using an uplink channel; and a transmitting unit configured to transmit, to the terminal, a system information or radio resource control message including an information element indicating a TDD mode set for the terminal, The terminal determines, according to the TDD mode set for the terminal, non-contiguous specific time slots allocated as transmission time slots for repeated transmission, The receiving unit performs the repeated reception using the specific time slot.

6. A wireless communication system, wherein: The wireless communication system comprises a terminal and a base station. The terminal has: a transmitting unit that performs repetitive transmission of an uplink signal using an uplink channel; and a control unit that determines, based on the TDD mode set for the terminal, non-continuous specific time slots to be allocated as transmission time slots for the repeated transmission, The transmitting unit performs the repeated transmission using the specific time slot.

7. A wireless communication method comprising the following steps: Step A, performing repeated transmission of an uplink signal using an uplink channel; and Step B, determining a non-continuous specific time slot allocated as a transmission time slot for the repeated transmission according to the TDD mode set for the terminal, In the step A, the repeated transmission is performed using the specific time slot.

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