Terminal, base station, wireless communication system, and wireless communication method

Abstract

To provide a terminal, a base station, a wireless communication system, and a wireless communication method that can appropriately apply PUSCH repetition type B when SBFD is assumed.SOLUTION: A terminal includes a communication unit that communicates with a cell to which a duplex duplexing scheme capable of performing simultaneous communication of an uplink signal and a downlink signal within a time division duplex band is applied, and a control unit that determines a valid symbol type to be applied to repeated transmission of the uplink signal on the basis of rules for the duplex duplexing scheme.SELECTED DRAWING: Figure 4

Description

[Technical Field]

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

[0002] The 3rd Generation Partnership Project (3GPP (registered trademark)) has developed specifications for the 5th generation mobile communication system (also known as 5G, New Radio (NR) or Next Generation (NG)), and is also developing specifications for the next generation, known as Beyond 5G, 5G Evolution or 6G.

[0003] For example, 3GPP Release 18 is considering an extension of the duplex method. Specifically, SBFD (Sub-Band non-overlapping Full Duplex) is proposed as a new duplex method that enables simultaneous use of the downlink (DL) and uplink (UL) within a carrier in a time division duplex (TDD) band. SBFD may also be read as XDD (Cross Division Duplex) (see, for example, Non-Patent Document 1). [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] "New WID: Evolution of NR duplex operation: Sub-band full duplex (SBFD)", RP-234035, 3GPP TSG RAN#102, 3GPP, December 2023 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, for uplink channels such as PUSCH (Physical Uplink Shared Channel), repetitive transmission is assumed between SBFD symbols and non-SBFD symbols. Furthermore, possible repetitive transmissions include PUSCH repetition type A, in which PUSCH transmission is repeated using resources for each slot, and PUSCH repetition type B, in which PUSCH transmission is repeated using resources spanning slots.

[0006] Under these circumstances, the inventors have conducted extensive research and found that, when PUSCH repetition type B for SBFD is assumed, it is necessary to clarify whether SBFD / Non-SBFD symbols are used in actual repetition. Furthermore, the inventors have conducted extensive research and found that, when PUSCH repetition type B for SBFD is assumed, cases can be anticipated in which nominal repetition symbols include SBFD symbols and Non-SBFD symbols, and that it is necessary to clarify how to determine valid symbol types in such cases.

[0007] Therefore, the present disclosure has been made to solve the above-described problems, and aims to provide a terminal, a base station, a wireless communication system, and a wireless communication method that can appropriately apply PUSCH repetition type B when SBFD is assumed. [Means for solving the problem]

[0008] The disclosed aspect is a terminal including: a communication unit that communicates with a cell to which a duplexing method is applied that can perform simultaneous communication of an uplink signal and a downlink signal within a time division duplex band; and a control unit that determines a valid symbol type to be applied to repeated transmission of the uplink signal based on rules for the duplexing method.

[0009] The disclosed aspect is a base station including: a communication unit that communicates with a terminal via a duplex cell that can perform simultaneous communication of an uplink signal and a downlink signal within a time division duplex band; and a control unit that determines a valid symbol type to be applied to repeated transmission of the uplink signal based on a rule for the duplex cell.

[0010] An aspect of the disclosure is a wireless communication system comprising a terminal and a base station, wherein the terminal comprises a communication unit that communicates with a cell to which a duplexing method is applied that can perform simultaneous communication of an uplink signal and a downlink signal within a time division duplex band, and a control unit that determines a valid symbol type to be applied to repeated transmission of the uplink signal based on rules for the duplexing method.

[0011] The disclosed aspect is a wireless communication method comprising: a step A of communicating with a cell to which a duplexing method capable of performing simultaneous communication of an uplink signal and a downlink signal within a time division duplex band is applied; and a step B of determining a valid symbol type to be applied to repeated transmission of the uplink signal based on a rule for the duplexing method. [Effects of the Invention]

[0012] According to the present disclosure, it is possible to provide a terminal, a base station, a wireless communication system, and a wireless communication method that can appropriately apply PUSCH repetition type B when SBFD is assumed. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a diagram showing the overall schematic configuration of a wireless communication system 10. As shown in FIG. [Figure 2] FIG. 2 is a diagram showing frequency ranges used in the wireless communication system 10. As shown in FIG. [Figure 3] FIG. 3 is a diagram showing an example of the configuration of a radio frame, a subframe, and a slot used in the radio communication system 10. As shown in FIG. [Figure 4]FIG. 4 is a functional block diagram of the UE 200. [Figure 5] Figure 5 is a functional block diagram of gNB100. [Figure 6] FIG. 6 is a diagram for explaining SBFD. [Figure 7] FIG. 7 is a diagram for explaining Configuration 1 and Configuration 2. [Figure 8] FIG. 8 is a diagram illustrating PUSCH repetition type A and PUSCH repetition type B. [Figure 9] FIG. 9 is a diagram illustrating PUSCH repetition type B. [Figure 10] FIG. 10 is a diagram illustrating PUSCH repetition type B. [Figure 11] FIG. 11 is a diagram for explaining the first operation example. [Figure 12] FIG. 12 is a diagram for explaining the second operation example. [Figure 13] FIG. 13 is a diagram for explaining the third operation example. [Figure 14] FIG. 14 is a diagram for explaining the fourth operation example. [Figure 15] FIG. 15 is a diagram for explaining the fourth operation example. [Figure 16] FIG. 16 is a diagram for explaining the fifth operation example. [Figure 17] FIG. 17 is a diagram for explaining the fifth operation example. [Figure 18] FIG. 18 is a diagram for explaining the sixth operation example. [Figure 19] FIG. 19 is a diagram for explaining the seventh operation example. [Figure 20] FIG. 20 is a diagram for explaining the seventh operation example. [Figure 21] FIG. 21 is a diagram for explaining the seventh operation example. [Figure 22] FIG. 22 is a diagram for explaining the seventh operation example. [Figure 23] FIG. 23 is a diagram showing an example of the hardware configuration of gNB100 and UE200. [Figure 24] FIG. 24 is a diagram showing an example of the configuration of a vehicle 2001. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, embodiments will be described with reference to the drawings. Note that the same or similar reference numerals are used to designate the same functions or configurations, and descriptions thereof will be omitted as appropriate.

[0015] (1) Overall configuration of wireless communication system 1 is a schematic diagram of the overall configuration of a wireless communication system 10 according to an embodiment. The wireless communication system 10 is a wireless communication system conforming to 5G New Radio (NR) and includes a Next Generation-Radio Access Network 20 (hereinafter, NG-RAN 20) and a terminal 200 (hereinafter, UE (User Equipment) 200).

[0016] The wireless communication system 10 may be a wireless communication system conforming to a system called Beyond 5G, 5G Evolution, or 6G.

[0017] The NG-RAN 20 includes a base station 100 (hereinafter, gNB 100). Note that the specific configuration of the wireless communication system 10, including the number of gNBs 100 and UEs 200, is not limited to the example shown in FIG.

[0018] The NG-RAN 20 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). The NG-RAN 20 and the 5GC may be simply referred to as a "network."

[0019] The gNB 100 is a radio base station conforming to 5G, and performs 5G radio communication with the UE 200. The gNB 100 and the UE 200 are capable of supporting Massive MIMO (Multiple-Input Multiple-Output), which generates a more directional beam BM by controlling radio signals transmitted from multiple antenna elements, Carrier Aggregation (CA), which aggregates and uses multiple component carriers (CCs), and Dual Connectivity (DC), which simultaneously communicates on two or more transport blocks between the UE and each of two NG-RAN nodes.

[0020] The wireless communication system 10 also supports a plurality of frequency ranges (FR).

[0021] First, the wireless communication system 10 may support multiple frequency ranges (FR) as shown in Fig. 2. For example, the wireless communication system 10 supports FR1, FR2-1, and FR2-2. The frequency bands of each FR are as follows:

[0022] FR1: 410 MHz to 7.125 GHz FR2-1: 24.25 GHz to 52.6 GHz ·FR2-2: More than 52.6GHz~71GHz FR1 may use a Sub-Carrier Spacing (SCS) of 15, 30, or 60 kHz, and may use a bandwidth (BW) of 5 to 100 MHz. FR2 is a higher frequency than FR1, and may use an SCS of 60 kHz or 120 kHz (including 240 kHz), and may use a bandwidth (BW) of 50 to 400 MHz.

[0023] Note that SCS may be interpreted as numerology, which is defined in 3GPP TS38.300 and corresponds to one subcarrier spacing in the frequency domain.

[0024] Furthermore, the wireless communication system 10 may also be compatible with frequency bands higher than the FR2 frequency band. Specifically, the wireless communication system 10 may be compatible with frequency bands exceeding 52.6 GHz up to 71 GHz or 114.25 GHz.

[0025] Second, the wireless communication system 10 may support the radio frames, subframes, and slots shown in FIG.

[0026] As shown in Figure 3, one slot consists of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and slot period). In addition to 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz, the SCS may also use 480 kHz, 960 kHz, etc.

[0027] Furthermore, the number of symbols constituting one slot does not necessarily have to be 14 (for example, 28 symbols or 56 symbols). Furthermore, the number of slots per subframe may differ depending on the SCS.

[0028] The time direction (t) shown in Fig. 3 may be called a time domain, a symbol period, or a symbol time, etc. The frequency direction may be called a frequency domain, a resource block, a subcarrier, a bandwidth part (BWP), etc.

[0029] (2) Functional block configuration of wireless communication system Next, the functional block configuration of the wireless communication system 10 will be described.

[0030] First, the functional block configuration of the UE 200 will be described.

[0031] Fig. 4 is a functional block diagram of UE 200. As shown in Fig. 4, UE 200 includes radio signal transmitting / receiving unit 210, amplifier unit 220, modem unit 230, control signal / reference signal processing unit 240, encoding / decoding unit 250, data transmitting / receiving unit 260, and control unit 270.

[0032] The radio signal transmitting / receiving unit 210 transmits and receives radio signals conforming to NR. The radio signal transmitting / receiving unit 210 supports Massive MIMO, CA that uses a bundle of multiple CCs, and DC that simultaneously communicates between a UE and two NG-RAN nodes.

[0033] In the embodiment, the radio signal transceiver 210 may constitute a communication unit that communicates with a duplex cell capable of simultaneous communication of an uplink signal (hereinafter, referred to as an UL signal) and a downlink signal (hereinafter, referred to as a DL signal) within a time division duplex band. Note that a new duplex cell capable of simultaneous communication of an UL signal and a DL signal may be referred to as SBFD (Sub-Band non-overlapping Full Duplex). SBFD may be read as XDD (Cross Division Duplex).

[0034] Simultaneous communication of UL signals and DL signals may be performed using specific time resources. The specific time resources are time resources to which SBFD can be applied. The specific time resources may also be interpreted as SBFD resources (SBFD symbols / slots) that are semi-statically or dynamically configured in the time direction (or the time domain). The specific time resources may also be interpreted as resources in which UL sub-band(s) and DL sub-band(s) are simultaneously configured semi-statically or dynamically in the time direction (or the time domain).

[0035] The duplex mode cell may be referred to as an SBFD operation cell or an SBFD cell. The additional cell may be referred to as an Additional PCI (Physical Cell Identifier) ​​Cell. The Additional PCI Cell may include a cell that operates in SBFD (SBFD operation cell) or a cell that does not operate in SBFD (Non-SBFD operation cell or Non-SBFD cell).

[0036] The amplifier unit 220 is configured by 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. The amplifier unit 220 also amplifies the RF signal output from the radio signal transmission / reception unit 210.

[0037] The modem unit 230 performs data modulation / demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (gNB 100 or another gNB). The modem unit 230 may apply Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform - Spread (DFT-S-OFDM). Furthermore, DFT-S-OFDM may be used not only for the uplink (UL) but also for the downlink (DL).

[0038] The control signal / reference signal processor 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 .

[0039] Specifically, the control signal / reference signal processor 240 receives various control signals, for example, control signals of a radio resource control layer (RRC), transmitted via a predetermined control channel from the gNB 100. The control signal / reference signal processor 240 also transmits various control signals to the gNB 100 via a predetermined control channel.

[0040] The control signal / reference signal processor 240 performs processing using reference signals (RS) such as a Demodulation Reference Signal (DMRS) and a Phase Tracking Reference Signal (PTRS).

[0041] DMRS is a reference signal (pilot signal) known between the 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 an issue in high frequency bands.

[0042] In addition to the DMRS and PTRS, the reference signals may include a Channel State Information-Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), and a Positioning Reference Signal (PRS) for position information.

[0043] The channels include control channels and data channels, such as a PDCCH (Physical Downlink Control Channel), a PUCCH (Physical Uplink Control Channel), a RACH (Random Access Channel), Downlink Control Information (DCI) including a Random Access Radio Network Temporary Identifier (RA-RNTI), and a Physical Broadcast Channel (PBCH).

[0044] Furthermore, the data channel includes a PDSCH (Physical Downlink Shared Channel) and a PUSCH (Physical Uplink Shared Channel). Data refers to data transmitted via the data channel. The data channel may be interpreted as a shared channel.

[0045] Here, the control signal and reference signal processor 240 may receive downlink control information (DCI). The DCI includes existing fields for storing DCI Formats, Carrier indicator (CI), BWP indicator, Frequency Domain Resource Assignment (FDRA), Time Domain Resource Assignment (TDRA), Modulation and Coding Scheme (MCS), HARQ Process Number (HPN), New Data Indicator (NDI), Redundancy Version (RV), etc.

[0046] 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 applies. The value stored in the BWP indicator field is an information element that specifies the BWP to which the DCI applies. The BWP that can be specified by the BWP indicator is set by an 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 applies. The frequency domain resource is identified by the value stored in the FDRA field and an 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 applies. The time domain resource is identified by the value stored in the TDRA field and information elements (pdsch-TimeDomainAllocationList, pusch-TimeDomainAllocationList) included in the RRC message. The time domain resource may be identified by 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 applies. The MCS is identified by the value stored in the MCS and an MCS table. The MCS table may be specified by an RRC message or may be 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 for specifying whether the data to which the DCI is applied is initial transmission 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.

[0047] The encoding / decoding unit 250 performs data division / concatenation and channel coding / decoding for each predetermined communication destination (gNB100 or another gNB).

[0048] Specifically, the encoding / decoding unit 250 divides the data output from the data transmitting / receiving unit 260 into pieces of a predetermined size, performs channel coding on the divided data, decodes the data output from the modem unit 230, and concatenates the decoded data.

[0049] The data transmitter / receiver 260 transmits and receives Protocol Data Units (PDUs) and Service Data Units (SDUs). Specifically, the data transmitter / receiver 260 assembles and disassembles PDUs / SDUs in multiple layers (such as a Medium Access Control layer (MAC), a Radio Link Control layer (RLC), and a Packet Data Convergence Protocol layer (PDCP)). The data transmitter / receiver 260 also performs data error correction and retransmission control based on HARQ (Hybrid Automatic Repeat Request).

[0050] The control unit 270 controls each functional block constituting the UE 200. The control unit 270 may determine, based on a rule for SBFD, whether actual repeated symbols applied in repeated transmission of an uplink signal include a first symbol (Non-SBFD symbol) to which the SBFD is not applied and a second symbol (SBFD symbol) to which the SBFD is applied. In an embodiment, the control unit 270 may be configured as a control unit that determines a valid symbol type (Valid symbol type) to be applied to repeated transmission, based on a rule for SBFD. The uplink signal may be interpreted as an uplink channel or a PUSCH.

[0051] Secondly, we will explain the functional block configuration of gNB100.

[0052] Fig. 5 is a functional block diagram of the gNB 100. As shown in Fig. 5, the gNB 100 includes a receiving unit 110, a transmitting unit 120, and a control unit 130.

[0053] The receiving unit 110 receives various signals from the UE 200. The receiving unit 110 may receive an UL signal via a PUCCH or a PUSCH.

[0054] The transmitter 120 transmits various signals to the UE 200. The transmitter 120 may transmit the DL signal via the PDCCH or the PDSCH.

[0055] In an embodiment, the receiving unit 110 and the transmitting unit 120 may constitute a communication unit that communicates with the UE 200 via a SBFD operation cell that can perform simultaneous communication of UL signals and DL signals within the TDD band.

[0056] The control unit 130 controls the gNB 100. The control unit 130 may determine, based on rules for SBFD, whether actual repeated symbols applied in repeated transmission of an uplink signal include a first symbol (Non-SBFD symbol) to which SBFD is not applied and a second symbol (SBFD symbol) to which SBFD is applied. In an embodiment, the control unit 130 may be configured as a control unit that determines valid symbol types (Valid symbol types) to apply to repeated transmission based on rules for SBFD.

[0057] (3) Issues First, we will explain resource allocation for gNB100.

[0058] In 3GPP Releases 15, 16, and 17, the gNB 100 sets or designates "DL," "F (Flexible)," or "UL" for each symbol, as shown in the upper part of Figure 6. Simultaneous communication of DL signals and UL signals is not permitted in a certain time resource.

[0059] On the other hand, in 3GPP Release 18, as shown in the lower part of Figure 6, the gNB 100 sets or designates "DL" for symbols of certain frequency resources (e.g., sub-band(s)) and sets or designates "UL" for symbols of other frequency resources (e.g., sub-band(s)). Simultaneous communication of DL signals and UL signals is permitted in certain time resources. This method may be referred to as SBFD (Sub-Band non-overlapping Full Duplex).

[0060] Second, repeated transmission between SBFD and non-SBFD for uplink channels such as PUCCH, PUSCH, and SRS will be described. In such a case, as shown in Fig. 7, a first configuration (Configuration 1) in which transmission and reception are limited to only SBFD symbols or non-SBFD symbols, and a second configuration (Configuration 2) in which transmission and reception are possible using SBFD symbols and non-SBFD symbols are assumed. Note that Fig. 7 illustrates an example in which Configuration 1 and Configuration 2 are applied to uplink signals, but Configuration 1 and Configuration 2 may also be applied to downlink signals.

[0061] Here, possible repetitive transmissions include PUSCH repetition type A, in which PUSCH transmission is repeated using resources for each slot, and PUSCH repetition type B, in which PUSCH transmission is repeated using resources spanning slots.

[0062] For example, consider the case where the repetition factor k is 4 and the PUSCH length L is 6. As shown in the upper part of FIG. 8, in slot-based PUSCH Rep. (PUSCH repetition type A), PUSCH transmission of 6 symbols is repeated for each slot (Rep. 1 to Rep. 4). As shown in the lower part of FIG. 8, in sub-slot based PUSCH Rep. (PUSCH repetition type B), the nominal repetition symbol is segmented into multiple actual repetition symbols (Rep. 2-1 to Rep. 2-2, Rep. 3-1 to Rep. 3-2, etc.) at the DL / SSB symbol and slot boundary. Each actual repetition includes one or more UL / Flexible symbols within the slot.

[0063] 9 , the UE 200 determines invalid symbol(s) for PUSCH repetition type B. For example, the existing rule for PUSCH repetition type B may include a rule that a symbol indicated as downlink by the tdd-UL-DL-Configuration Common or the tdd-UL-DL-Configuration Dedicated is an invalid symbol for PUSCH repetition type B.

[0064] As shown in FIG. 10 , the existing rules for PUSCH repetition type B may include a rule that, when the number of potential valid symbols for PUSCH repetition type B for a nominal repetition is greater than zero, the nominal repetition includes one or more actual repetitions, and each actual repetition includes a contiguous set of all potential valid symbols that can be used for PUSCH repetition type B.

[0065] The existing rules shown in FIGS. 9 and 10 may be the rules specified in 3GPP TS38.214 §6.1.2.1 “Resource allocation in time domain”.

[0066] Under these circumstances, the inventors have conducted extensive research and found that it is necessary to clarify whether or not SBFD / non-SBFD symbols are used in actual repetition when PUSCH repetition type B for SBFD is assumed. Furthermore, the inventors have conducted extensive research and found that it is necessary to clarify how to determine valid symbol types in cases where nominal repetition symbols include SBFD symbols and non-SBFD symbols when PUSCH repetition type B for SBFD is assumed.

[0067] (4) Definitions The following explains the definitions of terms related to SBFD.

[0068] The SBFD operation cell is a cell in which the position of the SBFD sub-band in the time or frequency direction is configured in the serving cell.

[0069] A non-SBFD operation cell is a cell in which no SBFD sub-bands are configured in the serving cell.

[0070] A semi-static DL slot / symbol is a slot / symbol that is configured as DL by higher layer parameters (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated).

[0071] A semi-static UL slot / symbol is a slot / symbol configured as a UL by higher layer parameters (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated).

[0072] A semi-static flexible slot / symbol is a slot / symbol that is configured as Flexible by the upper layer parameters (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated).

[0073] A Dynamic DL slot / symbol is a slot / symbol that is set as Flexible by higher layer parameters (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated) and is specified as DL by DCI Format 2_0.

[0074] A Dynamic UL slot / symbol is a slot / symbol that is set as Flexible by higher layer parameters (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated) and is specified as UL by DCI Format 2_0.

[0075] A dynamic flexible slot / symbol is a slot / symbol that is set as Flexible by higher layer parameters (tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated) and is specified as Flexible by DCI Format 2_0.

[0076] (5) Example of operation In order to solve the above-described problem, the following operation example may be defined. Specifically, the UE 200 determines whether the actual repetition includes an SBFD symbol and a non-SBFD symbol based on the rule for SBFD. The determination of whether the actual repetition includes an SBFD symbol and a non-SBFD symbol may be interpreted as a determination of invalid symbol(s) for PUSCH repetition type B. The rule for SBFD may be interpreted as the rule for SBFD and non-SBFD.

[0077] (5.1) Example 1 In the first operational example, as shown in FIG. 11, the SBFD rule may be a rule in which the actual repetition includes both the SBFD symbol and the non-SBFD symbol.

[0078] In the SBFD rules of the first operational example, the DL symbol in the existing rules may be modified to a Non-SBFD DL symbol.

[0079] In the SBFD rules of the first operational example, other invalid symbols in existing rules (see FIG. 9) may be reused.

[0080] In the first operational example, the actual repetition may be segmented at the invalid symbol and the slot boundary. Such segmentation may be similar to the existing rule (see FIG. 10).

[0081] Operation example 1 may be applied to a first configuration (Configuration 1) in which transmission and reception are limited to only SBFD symbols or non-SBFD symbols, or to a second configuration (Configuration 2) in which transmission and reception are possible with SBFD symbols and non-SBFD symbols.

[0082] (5.2) Example 2 In the second operational example, as shown in FIG. 12, the SBFD rule may be a rule in which the actual repetition includes only SBFD symbols or only non-SBFD symbols.

[0083] In the SBFD rules of the second operational example, the DL symbol in the existing rules may be modified to a Non-SBFD DL symbol.

[0084] In the SBFD rules of the second operational example, other invalid symbols (see FIG. 9) in existing rules may be reused.

[0085] In the second operational example, the actual repetition may be segmented at the boundary between SBFD symbols and non-SBFD symbols in addition to the invalid symbol and slot boundary.

[0086] In operation example 2, each of the actual repetitions may include a contiguous set of all potential valid SBFD symbols that can be used in PUSCH repetition type B or a contiguous set of all potential valid SBFD symbols that can be used in PUSCH repetition type B.

[0087] Operation example 2 may be applied to a first configuration (Configuration 1) in which transmission and reception are limited to only SBFD symbols or non-SBFD symbols, or to a second configuration (Configuration 2) in which transmission and reception are possible with SBFD symbols and non-SBFD symbols.

[0088] (5.3) Example 3 In the operation example 3, the SBFD rule may be a rule in which the actual repetition includes only valid symbol types among the SBFD symbol and the non-SBFD symbol. As the operation example 3, the following options are considered.

[0089] In option 3-1, when the SBFD symbol is a valid symbol type, the SBFD rule may be a rule in which the actual repetition includes only the SBFD symbol, as shown in the upper part of FIG.

[0090] In the SBFD rules of Option 3-1, the DL symbol in the existing rules may be modified to a Non-SBFD DL symbol.

[0091] In the SBFD rules of Option 3-1, other invalid symbols in existing rules (see Figure 9) may be reused.

[0092] In option 3-2, when a non-SBFD symbol is a valid symbol type, the SBFD rule may be a rule in which the actual repetition includes only non-SBFD symbols, as shown in the lower part of FIG.

[0093] In the SBFD rules of Option 3-2, the DL symbol in the existing rules may be modified to the DL symbol and / or the SBFD Flexible symbol.

[0094] In the SBFD rules of Option 3-2, other invalid symbols in existing rules (see Figure 9) may be reused.

[0095] In the third example of operation, the actual repetition may be segmented at the invalid symbol and the slot boundary. Such segmentation may be similar to the existing rule (see FIG. 10).

[0096] Operation example 3 may be applied to a first configuration (Configuration 1) in which transmission and reception are limited to only SBFD symbols or non-SBFD symbols.

[0097] In operation example 3, when Configuration 1 is applied, it may be specified to which symbol type, SBFD symbol or non-SBFD symbol, Configuration 1 is to be applied, in other words, the symbol type (valid symbol type) to which Configuration 1 is to be applied.

[0098] In operation example 3, when Configuration 1 is applied, the symbol type (valid symbol type) may be determined based on a predetermined rule, or may be determined so that PUCCH resources for SBFD are prioritized, or may be determined so that PUCCH resources for non-SBFD are prioritized.

[0099] (5.4) Example 4 Operation example 4 is an operation example that assumes the above-mentioned operation example 1 (the case where actual repetition includes both SBFD symbols and non-SBFD symbols). There are three possible types of actual repetition: actual repetition that includes only SBFD symbols, actual repetition that includes only non-SBFD symbols, and actual repetition that spans SBFD symbols and non-SBFD symbols. The following options are possible for operation example 4.

[0100] In option 4-1, when a first configuration (Configuration 1) in which transmission and reception are limited to only SBFD symbols or non-SBFD symbols is applied, the UE 200 may not transmit a PUSCH or may drop a PUSCH in an actual repetition that overlaps with an invalid symbol type. The following options are possible as option 4-1.

[0101] Option 4-1-1 describes a case where transmission and reception are limited to only SBFD symbols. As shown in the upper part of Fig. 14, UE 200 drops PUSCH in actual repetitions that overlap with non-SBFD symbols, and transmits PUSCH in actual repetitions that include only SBFD symbols having a length of 1 or more.

[0102] In option 4-1-1, the UE 200 may assume at least one actual repetition including only an SBFD symbol. The actual repetition may be an actual repetition for PUSCH repetition type B scheduled by DCI.

[0103] Option 4-1-2 describes a case where transmission and reception are limited to only Non-SBFD symbols. As shown in the lower part of Fig. 14, UE 200 drops PUSCH in actual repetitions that overlap with SBFD symbols, and transmits PUSCH in actual repetitions that include only Non-SBFD symbols having a length of 1 or more.

[0104] In option 4-1-2, the UE 200 may assume at least one actual repetition including only Non-SBFD symbols. The actual repetition may be an actual repetition for PUSCH repetition type B scheduled by DCI.

[0105] In option 4-2, when a second configuration (Configuration 2) in which transmission and reception are possible using SBFD symbols and non-SBFD symbols is applied, UE 200 may perform the following operations.

[0106] As shown in FIG. 15, the UE 200 transmits the PUSCH in an actual repetition including only SBFD symbols having a length of one or more and an actual repetition including only non-SBFD symbols having a length of one or more.

[0107] As shown in Fig. 15, the UE 200 may perform the following Alt operations in the actual repetition spanning the SBFD symbol and the non-SBFD symbol. Specifically, in Alt-a, the UE 200 may not transmit the PUSCH or may drop the PUSCH. In Alt-b, the UE 200 may transmit the PUSCH.

[0108] In Alt-a, the UE 200 may assume at least one actual repetition including only SBFD symbols or at least one actual repetition including only non-SBFD symbols. The actual repetition may be an actual repetition for PUSCH repetition type B scheduled by DCI.

[0109] In Option 4-2, whether Alt-a or Alt-b is to be applied may be defined by the wireless communication system 10, may be set by a higher layer parameter, or may be indicated by DCI. The higher layer parameter may be included in an RRC message, and may be set for each CG configuration, or may be set in the PUSCH-configuration. When set in the PUSCH-configuration, it may be applied commonly to PUSCH repetition type B in the BWP or Cell.

[0110] (5.5) Example 5 Operation example 5 is an operation example that assumes the above-mentioned operation example 2 (the case where the actual repetition includes only SBFD symbols or only Non-SBFD symbols). There are two possible types of actual repetition: an actual repetition that includes only SBFD symbols, and an actual repetition that includes only Non-SBFD symbols. The following options are possible for operation example 5.

[0111] In option 5-1, when a first configuration (Configuration 1) in which transmission and reception are limited to only SBFD symbols or non-SBFD symbols is applied, UE 200 may not transmit a PUSCH or may drop a PUSCH in an actual repetition that overlaps with an invalid symbol type. The following options are possible as option 5-1.

[0112] Option 5-1-1 describes a case where transmission and reception are limited to only SBFD symbols. As shown in the upper part of Fig. 16, UE 200 drops PUSCH in actual repetitions that overlap with non-SBFD symbols, and transmits PUSCH in actual repetitions that include only SBFD symbols having a length of 1 or more.

[0113] In option 5-1-1, the UE 200 may assume at least one actual repetition including only an SBFD symbol. The actual repetition may be an actual repetition for PUSCH repetition type B scheduled by DCI.

[0114] Option 5-1-2 describes a case where transmission and reception are limited to only Non-SBFD symbols. As shown in the lower part of Fig. 16, UE 200 drops PUSCH in actual repetitions that overlap with SBFD symbols, and transmits PUSCH in actual repetitions that include only Non-SBFD symbols having a length of 1 or more.

[0115] In option 5-1-2, the UE 200 may assume at least one actual repetition including only Non-SBFD symbols. The actual repetition may be an actual repetition for PUSCH repetition type B scheduled by DCI.

[0116] In Option 5-2, when the second configuration (Configuration 2) in which transmission and reception are possible using SBFD symbols and non-SBFD symbols is applied, as shown in FIG. 17, UE 200 transmits PUSCH in each of the actual repetitions having a length of one or more.

[0117] (5.6) Example 6 Operational example 6 is an operational example that assumes the above-mentioned operational example 3 (the case where the actual repetition includes only valid symbol types of SBFD symbols and non-SBFD symbols). As for the actual repetition, if the SBFD symbol is a valid symbol type, the actual repetition is assumed to include only SBFD symbols, and if the non-SBFD symbol is a valid symbol type, the actual repetition is assumed to include only non-SBFD symbols. The following options are possible for operational example 6.

[0118] Option 6-1 describes a case where transmission and reception are limited to only SBFD symbols. As shown in the upper part of Fig. 18, UE 200 assumes only actual repetitions that include only SBFD symbols, and therefore transmits PUSCH in the actual repetitions.

[0119] In option 6-1, the UE 200 may assume at least one actual repetition including only an SBFD symbol. The actual repetition may be an actual repetition for PUSCH repetition type B scheduled by DCI.

[0120] Option 6-2 describes a case where transmission and reception are limited to only Non-SBFD symbols. As shown in the lower part of Fig. 18, UE 200 assumes only actual repetitions that include only Non-SBFD symbols, and therefore transmits PUSCH in actual repetitions.

[0121] In option 6-2, the UE 200 may assume at least one actual repetition including only Non-SBFD symbols. The actual repetition may be an actual repetition for PUSCH repetition type B scheduled by DCI.

[0122] (5.7) Example 7 In the seventh operational example, the UE 200 may be configured with a control unit that determines a valid symbol type to be applied to Repetition type B based on a rule for SBFD (Single-Band Forwarding Duplex) scheme. The SBFD rule may be a rule based on a nominal repetition of symbols in repeated transmission of an uplink signal. The SBFD rule may be a rule based on an actual repetition of symbols in repeated transmission of an uplink signal. As the seventh operational example, the following Alt is considered.

[0123] (5.7.1)Alt 7-1 In Alt 7-1, the rule for SBFD may be a rule based on nominal repetition. Specifically, the UE 200 determines the valid symbol type to be applied to Repetition type B based on the first nominal repetition (first nominal PUSCH repetition). The following Alts are possible for Alt 7-1:

[0124] In Alt 7-1-1, the symbol type of the first nominal repetition may be determined as the valid symbol type. UE 200 may assume that the symbol types of the symbols included in the first nominal repetition are the same. In other words, UE 200 may not assume that the first nominal repetition includes SBFD symbols and non-SBFD symbols (overlaps with SBFD symbols and non-SBFD symbols).

[0125] For example, as shown in FIG. 19, the case where the first nominal repetition includes an SBFD symbol and a non-SBFD symbol may be treated as an error case.

[0126] In Alt 7-1-1, the symbol type of the first nominal repetition after excluding invalid symbol(s) may be determined as the valid symbol type. UE 200 may assume that the symbol types of the symbols included in the first nominal repetition after excluding invalid symbol(s) are the same. In other words, UE 200 does not need to assume that the first nominal repetition after excluding invalid symbol(s) includes SBFD symbols and non-SBFD symbols (overlaps with SBFD symbols and non-SBFD symbols). As described in operation examples 1 to 3, the invalid symbol(s) may be SBFD DL symbols or DL ​​symbols.

[0127] In Alt 7-1-2, the symbol type of the first or last symbol included in the first nominal repetition may be determined as the valid symbol type.

[0128] For example, as shown in FIG. 19, when the Symbol type of the first symbol is determined as a Valid symbol type, the Valid symbol type may be determined as SBFD in a case where the first Nominal repetition includes an SBFD symbol and a Non-SBFD symbol.

[0129] In Alt 7-1-2, the symbol type of the first or last symbol included in the first nominal repetition after excluding invalid symbol(s) may be determined as the valid symbol type. As described in Operation Examples 1 to 3, the invalid symbol(s) may be SBFD DL symbols or DL ​​symbols.

[0130] (5.7.2)Alt 7-2 In Alt 7-2, the rule for SBFD may be a rule based on the actual repetition. Specifically, the UE 200 determines the valid symbol type to be applied to Repetition type B based on the first actual repetition (first actual PUSCH repetition).

[0131] Here, if the nominal repetition is segmented at the boundary between SBFD symbols and non-SBFD symbols, the actual repetition contains only symbols of one Symbol type. On the other hand, if the nominal repetition is segmented according to existing rules, the actual repetition may contain SBFD symbols and non-SBFD symbols (overlap with SBFD symbols and non-SBFD symbols), and the valid symbol type must be determined taking such cases into account.

[0132] Under these circumstances, the following Alts are possible for Alt 7-2:

[0133] In Alt 7-2-1, UE 200 does not need to consider the case where the first Actual Repetition includes an SBFD symbol and a Non-SBFD symbol (overlaps with an SBFD symbol and a Non-SBFD symbol).

[0134] For example, the nominal repetition is segmented at the boundary between the SBFD symbol and the non-SBFD symbol as shown in Fig. 20. Since the symbol type of the first actual repetition (actual repetition #1) is SBFD, the valid symbol type is SBFD.

[0135] In Alt 7-2-2, the UE 200 may consider a case where the first Actual repetition includes an SBFD symbol and a Non-SBFD symbol (overlaps with an SBFD symbol and a Non-SBFD symbol). The following Alts are possible for Alt 7-2-2.

[0136] In Alt 7-2-2a, the case where the first actual repetition includes both an SBFD symbol and a non-SBFD symbol may be treated as an error case. For example, as shown in Figure 21, the case where the first actual repetition #1 includes both an SBFD symbol and a non-SBFD symbol may be treated as an error case.

[0137] In Alt 7-2-2b, the symbol type of the first or last symbol included in the first actual repetition may be determined as a valid symbol type. For example, as shown in Fig. 21, if the symbol type of the first symbol is determined as a valid symbol type, the valid symbol type may be determined as SBFD in the case where the first actual repetition #1 includes an SBFD symbol and a non-SBFD symbol.

[0138] In Alt 7-2-2c, the Symbol type of the first Actual Repetition that includes only symbols of one Symbol type may be determined as the Valid Symbol type. For example, as shown in Fig. 21, because Actual Repetition #1 includes an SBFD symbol and a Non-SBFD symbol, Actual Repetition #1 may not be treated as the first Actual Repetition, and Actual Repetition #2 that includes only symbols of one Symbol type may be treated as the first Actual Repetition. In the case shown in Fig. 21, the Valid Symbol type may be determined to be Non-SBFD.

[0139] (5.7.3)Alt 7-3 In Alt 7-3, the rule for SBFD may be a rule based on actual repetition. Specifically, UE 200 determines a valid symbol type to be applied to Repetition type B based on the first actual repetition (first actual PUSCH repetition) that includes more than one symbol (i.e., two or more symbols). For the first actual repetition that includes more than one symbol, the valid symbol type may be determined according to the method of Alt 7-2-1 or Alt 7-2-2.

[0140] For example, as shown in Fig. 22, because Actual repetition #1 includes one symbol (here, an SBFD symbol), Actual repetition #1 may not be treated as the first actual repetition, and Actual repetition #2, which includes more than one symbol, may be treated as the first actual repetition. In the case shown in Fig. 22, it may be determined that the valid symbol type is Non-SBFD.

[0141] (5.7.4) Other Operation example 7 may be applied to a PUSCH scheduled by DCI with Repetition type B. Operation example 7 may be applied to a type 2 CG (Configured Grant) PUSCH with Repetition type B.

[0142] (6) Action and effect In the embodiment, the UE 200 determines whether the actual repetition includes an SBFD symbol and a non-SBFD symbol based on the SBFD rule. According to such a configuration, by introducing the SBFD rule, when PUSCH repetition type B is assumed, the actual repetition is clarified, and therefore, PUSCH repetition type B can be appropriately executed.

[0143] In the embodiment, the UE 200 determines, based on the SBFD rule, the valid symbol type to be applied to PUSCH repetition type B. According to such a configuration, by introducing the SBFD rule, when PUSCH repetition type B is assumed, the valid symbol type is clarified, and therefore, PUSCH repetition type B can be appropriately executed.

[0144] (7) Other embodiments The present invention has been described above in accordance with the embodiments, but it will be obvious to those skilled in the art that the present invention is not limited to these descriptions and that various modifications and improvements are possible.

[0145] Although not particularly mentioned in the above disclosure, which of Operational Examples 1 to 7 to use (hereinafter, referred to as which aspect to use) may be set by a higher layer parameter. Which of each option or Alt. of Operational Examples 1 to 7 to use (hereinafter, referred to as which aspect to use) may be set by a higher layer parameter. Which aspect to support may be reported from UE 200 as UE capability(ies). Which aspect to use may be defined in advance in wireless communication system 20. Which aspect to use may be set by a higher layer parameter and reported from UE 200 as UE capability(ies).

[0146] Although not specifically mentioned in the above disclosure, the following UE capability(ies) may be defined. The UE capability(ies) may be defined for each UE 200, for each FR, or for each FC. The UE capability(ies) may be included in a signal reported from the UE 200 to the gNB 100, or may be included in a signal (RRC configuration) configured for the UE 200 from the NB 100.

[0147] Although not specifically mentioned in the above disclosure, the UE capability(ies) may include information indicating whether or not the UE supports actual repetition including both SBFD symbols and non-SBFD symbols (Operation Example 1).

[0148] Although not specifically mentioned in the above disclosure, the UE capability(ies) may include information indicating whether the actual repetition supports an actual repetition that includes only SBFD symbols or only non-SBFD symbols (operation example 2).

[0149] Although not specifically mentioned in the above disclosure, the UE capability(ies) may include information indicating whether or not the UE supports actual repetition that includes only valid symbol types among SBFD symbols and non-SBFD symbols (operation example 3).

[0150] Although not specifically mentioned in the above disclosure, the UE capability(ies) may include information indicating whether or not the UE supports transmission of PUSCH in actual repetition spanning SBFD symbols and non-SBFD symbols (Alt-a / Alt-b in operation example 4).

[0151] In the above disclosure, configure, activate, update, indicate, enable, specify, and select may be interchangeable. Similarly, link, associate, correspond, and map may be interchangeable, and allocate, assign, monitor, and map may be interchangeable.

[0152] Furthermore, specific, dedicated, UE-specific, and UE-dedicated may be interchangeable. Similarly, common, shared, group-common, UE-common, and UE-shared may be interchangeable.

[0153] The block diagrams (FIGS. 4 and 5) used in the description of the above-described embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are connected directly or indirectly (for example, by wire, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining the single device or the multiple devices with software.

[0154] Functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, regard, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how each is implemented.

[0155] Furthermore, the above-described gNB100 and UE200 (the device) may function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 23 is a diagram showing an example of the hardware configuration of the device. As shown in Figure 23, 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, etc.

[0156] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configuration of the apparatus may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0157] Each functional block of the device (see FIGS. 4 and 5) is realized by any hardware element of the computer device or a combination of the hardware elements.

[0158] In addition, each function of the device is realized by loading specified software (programs) onto hardware such as processor 1001 and memory 1002, causing processor 1001 to perform calculations, control communication via communication device 1004, and control at least one of reading and writing data in memory 1002 and storage 1003.

[0159] The processor 1001 controls the entire computer by running, for example, an operating system, and may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control unit, an arithmetic unit, a register, and the like.

[0160] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-mentioned embodiments. Furthermore, the various processes described above 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 implemented by one or more chips. The programs may be transmitted from a network via a telecommunications line.

[0161] The memory 1002 is a computer-readable recording medium and may be configured by, for example, at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), etc. The memory 1002 may also be called a register, a cache, a main memory (primary storage device), etc. The memory 1002 can store a program (program code), a software module, etc., that can execute a method according to an embodiment of the present disclosure.

[0162] Storage 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray disc), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy disk, a magnetic strip, etc. Storage 1003 may also be referred to as an auxiliary storage device. The above-mentioned recording medium may be, for example, a database, a server, or other appropriate medium including at least one of memory 1002 and storage 1003.

[0163] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also called, for example, a network device, a network controller, a network card, or a communication module.

[0164] The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize, for example, at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD).

[0165] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0166] Furthermore, each device such as the processor 1001 and the memory 1002 is connected to a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0167] 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 realized by the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0168] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher 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. Furthermore, the 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, or the like.

[0169] Each aspect / embodiment described in the present disclosure may be applied to at least one of a system using Long Term Evolution (LTE), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, a 4th generation mobile communication system (4G), a 5th generation mobile communication system (5G), a 6th generation mobile communication system (6G), an xth generation mobile communication system (xG) (where x is, for example, an integer or a decimal), 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), or other suitable systems, and next-generation systems enhanced based on these. In addition, a combination of multiple systems (for example, a combination of at least one of LTE and LTE-A with 5G) may be applied.

[0170] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0171] In the present disclosure, a specific operation described as being performed by a base station may be performed by its upper node in some cases. In a network consisting of one or more network nodes having a base station, it is clear that various operations performed for communication with a terminal may be performed by at least one of the base station and another network node other than the base station (for example, but not limited to, an MME or an S-GW). Although the above example illustrates a case where there is one other network node other than the base station, a combination of multiple other network nodes (for example, an MME and an S-GW) may also be used.

[0172] Information and signals (information, etc.) may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), and may be input and output via multiple network nodes.

[0173] 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 may be overwritten, updated, or added. The output information may be deleted. The input information may be sent to another device.

[0174] The determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).

[0175] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, notification of predetermined information (e.g., notification that "X is true") is not limited to being done explicitly, but may be done implicitly (e.g., by not notifying the predetermined information).

[0176] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0177] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0178] 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. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0179] Note that terms explained in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0180] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0181] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by an index.

[0182] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0183] In this 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. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0184] A base station can accommodate one or more (e.g., three) cells (also called sectors). When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head: RRH)).

[0185] The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication services within that coverage area.

[0186] In the present disclosure, the base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.

[0187] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0188] 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 terminology.

[0189] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, etc. The mobile body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may also include devices that do 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.

[0190] Furthermore, a base station in the present disclosure may be read as a mobile station (user terminal, the same applies hereinafter). For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a mobile station is replaced with communication between multiple mobile stations (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the mobile station may be configured to have the functions of a base station. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "side"). For example, terms such as uplink channel and downlink channel may be read as side channel.

[0191] Similarly, a mobile station in the present disclosure may be interpreted as a base station, in which case the base station may have the functions of a mobile station.

[0192] A radio frame may be composed of one or more frames in the time domain, each of which may be called a subframe.

[0193] A subframe may further be composed of one or more slots in the time domain, and may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0194] Numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, such as subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by a transceiver in the frequency domain, and specific windowing operations performed by a transceiver in the time domain.

[0195] A slot may consist of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol). A slot may be a time unit based on numerology.

[0196] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0197] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0198] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

[0199] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. However, the definition of TTI is not limited to this.

[0200] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0201] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0202] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0203] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0204] A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

[0205] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0206] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, or the like.

[0207] 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.

[0208] A Bandwidth Part (BWP) (which may also be referred to as a fractional bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a common reference point of the carrier. PRBs may be defined in a given BWP and numbered within that BWP.

[0209] 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.

[0210] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0211] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0212] The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0213] The reference signal may also be abbreviated as Reference Signal (RS), and may also be called a pilot depending on the applicable standard.

[0214] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0215] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0216] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed therein or that the first element must precede the second element in some way.

[0217] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0218] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0219] As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database, or other data structure), ascertaining, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like. Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0220] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0221] Fig. 24 shows an example of the configuration of a vehicle 2001. As shown in Fig. 24, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013.

[0222] The drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.

[0223] The steering unit 2003 includes at least a steering wheel (also called a handle), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

[0224] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2027 provided in the vehicle. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0225] The signals from the various sensors 2021 to 2028 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0226] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing various types of information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 2012 uses information obtained from external devices via the communication module 2013, etc., to provide various types of multimedia information and multimedia services to the occupants of the vehicle 1.

[0227] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driver's driving burden, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize driving assistance functions or autonomous driving functions.

[0228] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 1 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, an axle 2009, a microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 2028, which are provided in the vehicle 2001.

[0229] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

[0230] The communication module 2013 transmits, via wireless communication to an external device, a current signal from the current sensor that is input to the electronic control unit 2010. The communication module 2013 also transmits, via wireless communication to an external device, the rotation speed signals of the front and rear wheels acquired by a rotation speed sensor 2022, the air pressure signals of the front and rear wheels acquired by an air pressure sensor 2023, the vehicle speed signal acquired by a vehicle speed sensor 2024, the acceleration signal acquired by an acceleration sensor 2025, the accelerator pedal depression amount signal acquired by an accelerator pedal sensor 2029, the brake pedal depression amount signal acquired by a brake pedal sensor 2026, the shift lever operation signal acquired by a shift lever sensor 2027, and the detection signals for detecting obstacles, vehicles, pedestrians, etc. acquired by an object detection sensor 2028, all of which are input to the electronic control unit 2010.

[0231] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle. The communication module 2013 also stores the various information received from the external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, an axle 2009, sensors 2021 to 2028, and the like provided in the vehicle 2001.

[0232] Although the present disclosure has been described in detail above, it is 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 modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

[0233] (Addendum) The above disclosure may be expressed as follows:

[0234] The first feature is a terminal including: a communication unit that communicates with a cell to which a duplexing method is applied, which is capable of performing simultaneous communication of an uplink signal and a downlink signal within a time division duplex band; and a control unit that determines a valid symbol type to be applied to repeated transmission of the uplink signal based on rules for the duplexing method.

[0235] A second feature is the terminal according to the first feature, wherein the rule for the duplex mode is a rule based on a nominal repetition symbol of the repetitive transmission of the uplink signal.

[0236] A third feature is the terminal according to the first feature, wherein the rule for the duplex mode is based on actual repeated symbols of repeated transmission of the uplink signal.

[0237] A fourth feature is a base station including: a communication unit that communicates with a terminal via a duplex cell that can perform simultaneous communication of an uplink signal and a downlink signal within a time division duplex band; and a control unit that determines a valid symbol type to be applied to repeated transmission of the uplink signal based on a rule for the duplex cell.

[0238] A fifth feature is a wireless communication system including a terminal and a base station, wherein the terminal includes: a communication unit that communicates with a cell to which a duplexing scheme is applied that can perform simultaneous communication of an uplink signal and a downlink signal within a time division duplex band; and a control unit that determines a valid symbol type to be applied to repeated transmission of the uplink signal based on a rule for the duplexing scheme.

[0239] A sixth feature is a wireless communication method including: a step A of communicating with a cell to which a duplexing method capable of performing simultaneous communication of an uplink signal and a downlink signal within a time division duplex band is applied; and a step B of determining, based on a rule for the duplexing method, a valid symbol type to be applied to repeated transmission of the uplink signal. [Explanation of symbols]

[0240] 10. Wireless communication systems 20 NG-RAN 100 gNB 110 Receiving unit 120 Transmitter 130 control section 200 UE 210 Radio signal transmitter / receiver 220 Amplifier section 230 Modulation and Demodulation Unit 240 Control signal / reference signal processing section 250 Encoding / Decoding Unit 260 Data transmission and reception unit 270 Control Unit 1001 processor 1002 memory 1003 Storage 1004 Communication equipment 1005 Input Device 1006 Output Device 1007 Bus 2001 Vehicle 2002 Drive unit 2003 Steering section 2004 accelerator pedal 2005 brake pedal 2006 Shift Lever 2007 Left and right front wheels 2008 Left and right rear wheels 2009 Axle 2010 Electronic Control Unit 2012 Information Services Department 2013 Communication Module 2021 Current Sensor 2022 RPM Sensor 2023 Air Pressure Sensor 2024 Vehicle speed sensor 2025 Acceleration Sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object Detection Sensor 2029 Accelerator pedal sensor 2030 Driving Assistance Systems Department 2031 microprocessor 2032 memory (ROM, RAM) 2033 communication port

Claims

1. a communication unit that communicates with a cell to which a duplex system capable of simultaneously communicating an uplink signal and a downlink signal is applied within a time division duplex band; a control unit that determines a valid symbol type to be applied to repeated transmission of the uplink signal based on a rule for the duplex mode.

2. The terminal according to claim 1 , wherein the rule for the duplexing scheme is based on a nominal repetition symbol of the repeated transmission of the uplink signal.

3. The terminal according to claim 1 , wherein the rule for the duplexing scheme is based on actual repeated symbols of repeated transmission of the uplink signal.

4. a communication unit that communicates with a terminal via a duplex cell that can simultaneously communicate an uplink signal and a downlink signal within a time division duplex band; a control unit that determines a valid symbol type to be applied to repeated transmission of the uplink signal based on a rule for the duplexing scheme.

5. A terminal and a base station are provided, The terminal a communication unit that communicates with a cell to which a duplex system capable of simultaneously communicating an uplink signal and a downlink signal is applied within a time division duplex band; a control unit that determines a valid symbol type to be applied to repeated transmission of the uplink signal based on a rule for the duplex mode.

6. Step A of communicating with a cell to which a duplex system capable of simultaneously communicating an uplink signal and a downlink signal is applied within a time division duplex band; and B. determining, based on a rule for the duplexing scheme, a valid symbol type to be applied to repeated transmission of the uplink signal.

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