Terminal and communication method

Abstract

This terminal comprises: a control unit that determines an orthogonal cover code (OCC) to be applied to repetition of a physical uplink shared channel modulated by a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) or OFDM; and a transmission unit that transmits, to a base station, the repetition of the physical uplink shared channel to which the OCC has been applied. The control unit determines processing of a case where a plurality of physical uplink control channels overlap a group of repetitions of the physical uplink shared channel to which the same OCC has been applied.

Description

Terminals and communication methods

[0001] The present invention relates to a terminal and a communication method in a wireless communication system.

[0002] In NR (New Radio) (also known as "5G"), the successor system to LTE (Long Term Evolution), technologies are being considered that meet requirements such as large capacity, high data transmission speed, low latency, simultaneous connection of many terminals, low cost, and low power consumption (for example, Non-Patent Document 1).

[0003] Furthermore, NTN (Non-Terrestrial Network) is currently being considered. NTN uses non-terrestrial networks such as satellites to provide services to areas that cannot be covered by terrestrial 5G networks, mainly due to cost considerations (see, for example, Non-Patent Documents 2 and 3).

[0004] 3GPP TS 38.300 V18.3.0 (2024-09) 3GPP TR 38.821 V16.2.0 (2023-03) Konishi et al., "A Study on Downlink Frequency Sharing in HAPS Mobile Communication Systems," IEICE General Conference, B-17-1, 2020 3GPP TS 38.211 V18.4.0 (2024-09) 3GPP TS 38.213 V18.4.0 (2024-09) 3GPP TS 38.214 V18.4.0 (2024-09) 3GPP TS 38.321 V18.3.0 (2024-09)

[0005] At NTN, the distance between base stations and terminals in the air is very large, and base station resources are limited, so it is necessary to enhance the capacity and throughput of the Uplink (UL). Therefore, a method of applying Orthogonal Cover Code (OCC) to the Physical Uplink Shared Channel (PUSCH) of DFT-s-OFDM (Discrete fourier transform spread Orthogonal Frequency Division Multiplexing) is being considered.

[0006] This invention has been made in view of the above points, and aims to increase the uplink capacity in a wireless communication system.

[0007] According to the disclosed technology, a terminal is provided which includes a control unit that determines an OCC (Orthogonal Cover Code) to apply to a repetition of a physical uplink sharing channel modulated by DFT-s-OFDM (Discrete fourier transform spread Orthogonal Frequency Division Multiplexing) or OFDM, and a transmission unit that transmits the repetition of the physical uplink sharing channel to a base station to which the OCC is applied, wherein the control unit is provided with a terminal that determines how to process when multiple physical uplink control channels overlap a group of repetitions of the physical uplink sharing channel to which the same OCC is applied.

[0008] According to the disclosed technology, the uplink capacity in a wireless communication system can be increased.

[0009] This is a diagram showing an example of NTN (1). This is a diagram showing an example of NTN (2). This is a diagram showing an example of NTN (3). This is a diagram showing an example of NTN (4). This is a diagram showing an example of OCC (1) in an embodiment of the present invention. This is a diagram showing an example of OCC (2) in an embodiment of the present invention. This is a diagram showing an example of OCC (3) in an embodiment of the present invention. This is a diagram showing an example of PUSCH signal generation in an embodiment of the present invention. This is a flowchart for explaining an application example of OCC in an embodiment of the present invention. This is a flowchart for explaining a processing example in an embodiment of the present invention. This is a diagram showing a processing example (1) in an embodiment of the present invention. This is a diagram showing a processing example (2) in an embodiment of the present invention. This is a diagram showing a processing example (3) in an embodiment of the present invention. This is a diagram showing a processing example (4) in an embodiment of the present invention. This is a diagram showing a processing example (5) in an embodiment of the present invention. This is a diagram showing an example of the functional configuration of the base station 10 in an embodiment of the present invention. This is a diagram showing an example of the functional configuration of the terminal 20 in an embodiment of the present invention. This is a diagram showing an example of the hardware configuration of the base station 10 or terminal 20 in an embodiment of the present invention. This is a diagram showing an example of the configuration of the vehicle 2001 in an embodiment of the present invention.

[0010] Embodiments of the present invention will be described below with reference to the drawings. Note that the embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to those described below.

[0011] In the operation of the wireless communication system according to the embodiments of the present invention, existing technologies may be used as appropriate. However, such existing technologies include, for example, existing LTE, but are not limited to existing LTE. Furthermore, the term "LTE" as used herein has a broad meaning that includes LTE-Advanced and LTE-Advanced and later technologies (e.g., NR), unless otherwise specified.

[0012] Furthermore, in the embodiments of the present invention described below, terms such as SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), and PUSCH (Physical Uplink Shared Channel), which are used in existing LTE systems, will be used. This is for convenience of description, and similar signals, functions, etc., may be called by other names. Also, the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, NR-PDCCH, NR-PDSCH, NR-PUCCH, NR-PUSCH, etc. However, even if a signal is used in NR, it is not necessarily explicitly stated as "NR-".

[0013] Furthermore, in the embodiments of the present invention, the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or any other system (for example, a Flexible Duplex).

[0014] Furthermore, in the embodiments of the present invention, "configuring" wireless parameters, etc., may mean that predetermined values ​​are pre-configured, or that wireless parameters notified from the base station 10 or terminal 20 are configured.

[0015] Figure 1 shows an example of NTN (1). NTN (Non-Terrestrial Network) uses non-terrestrial equipment such as satellites to provide services to areas that cannot be covered by terrestrial 5G networks, mainly due to cost constraints. Furthermore, NTN can provide more reliable services. For example, it is envisioned to be applied to IoT (Inter-of-Things), ships, buses, trains, and critical communications. NTN also has scalability through efficient multicast or broadcast.

[0016] As an example from NTN, as shown in Figure 1, satellite 10A can retransmit signals transmitted from ground base station 10B to provide service to areas where ground base stations are not located, such as mountainous regions.

[0017] The terrestrial 5G network may have the configuration described below. The terrestrial 5G network includes one or more base stations 10 and terminals 20. The base station 10 is a communication device that provides one or more cells and communicates wirelessly with the terminals 20. The physical resources of the radio signal are defined in the time domain and the frequency domain, the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or resource blocks. The base station 10 transmits synchronization signals and system information to the terminals 20. The synchronization signals are, for example, NR-PSS and NR-SSS. The system information is transmitted, for example, in NR-PBCH and is also called broadcast information.

[0018] Base station 10 transmits control signals or data to terminal 20 via DL (Downlink) and receives control signals or data from terminal 20 via UL (Uplink). Both base station 10 and terminal 20 are capable of transmitting and receiving signals using beamforming. Furthermore, both base station 10 and terminal 20 are capable of applying MIMO (Multiple Input Multiple Output) communication to DL or UL. In addition, both base station 10 and terminal 20 may communicate via SCell (Secondary Cell) and PCell (Primary Cell) using CA (Carrier Aggregation).

[0019] Terminal 20 is a communication device equipped with wireless communication capabilities, such as a smartphone, mobile phone, tablet, wearable device, or M2M (Machine-to-Machine) communication module. Terminal 20 receives control signals or data from base station 10 via DL and transmits control signals or data to base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system.

[0020] Figure 2 shows an example of NTN (2). The area per cell or beam in NTN is much larger compared to terrestrial networks (TN). Figure 2 shows an example of NTN configured by satellite retransmission. The connection between satellite 10A and NTN gateway 10B is called a feeder link, and the connection between satellite 10A and UE20 is called a service link.

[0021] As shown in Figure 2, the difference in delay between the near-side UE20A and the far-side UE20B is, for example, 10.3 ms for GEO (Geosynchronous orbit) and 3.2 ms for LEO (Low Earth orbit). The beam size in NTN is, for example, 3500 km for GEO and 1000 km for LEO.

[0022] FIG. 3 is a diagram showing example (3) of NTN. As shown in FIG. 3, NTN is implemented by satellites in space or aircraft in the air. For example, a GEO satellite may be a satellite located at an altitude of 35,786 km and having a geostationary orbit. For example, a LEO satellite may be a satellite located at an altitude of 500-2000 km and orbiting with a period of 88-127 minutes. For example, HAPS (High Altitude Platform Station) may be an aircraft located at an altitude of 8-50 km that performs turning flight.

[0023] As shown in FIG. 3, the GEO satellite, the LEO satellite, and the HAPS aircraft may be connected to a ground station gNB via a gateway. Further, the service area may increase in the order of HAPS, LEO, and GEO.

[0024] For example, NTN can extend the coverage of a 5G network to unserved areas or served areas. Also, for example, NTN can improve the continuity, availability, and reliability of services in ships, buses, trains, or other critical communications. Note that notification of the NTN may be performed by transmitting a dedicated parameter to the terminal 20, and the dedicated parameter may be, for example, a parameter related to determination of TA (Timing Advance) based on information related to a satellite or an aircraft.

[0025] FIG. 4 is a diagram showing example (4) of NTN. FIG. 4 shows an example of an NTN network architecture assumed in the case of a transparent payload. As shown in FIG. 4, a CN (Core Network) 10D, a gNB 10C, and a gateway 10B are connected. The gateway 10B is connected to a satellite 10A via a feeder link. The satellite 10A is connected to a terminal 20A or a VSAT (Very small aperture terminal) 20B via a service link. An NR Uu is established between the gNB 10C and the terminal 20A or the VSAT 20B.

[0026] Furthermore, as an assumption for the network architecture of NTN, FDD may be adopted, or TDD may be applicable. Terrestrial cells may be fixed or mobile. The terminal 20 may also have the capability of supporting GNSS (Global Navigation Satellite System). For example, a power class 3 handheld device may be assumed in FR1. Furthermore, a VSAT device may be assumed in at least FR2.

[0027] Furthermore, the network architecture of NTN may assume a regenerative payload. For example, the gNB function may be mounted on a satellite or an aircraft. Alternatively, a gNB-DU may be mounted on a satellite or an aircraft, and the gNB-CU may be disposed as a ground station.

[0028] In NTN (Non-Terrestrial Network), since satellite resources are limited, enhancement of UL capacity and throughput is required. Accordingly, a method of applying OCC (Orthogonal Cover Code) to DFT-s-OFDM (Discrete fourier transform spread Orthogonal Frequency Division Multiplexing) is under study.

[0029] FIG. 5 is a diagram showing Example (1) of OCC in an embodiment of the present invention. As shown in FIG. 5, a time-domain OCC may be applied to PUCCH. An orthogonal sequence w is applied to two repetitions, in the time domain, of a sequence-modulated complex symbol y(n) which is PUCCH format 1 (see Non-Patent Document 4) ０ (m) and w １ (m), respectively. The orthogonal sequence w ｉ (m) is defined by the specification (see Non-Patent Document 4).

[0030] FIG. 6 is a diagram showing example (2) of OCC in the embodiment of the present invention. As shown in FIG. 6, frequency-domain OCC may be applied to PUCCH. Four repetitions of sequence-modulated d(0), d(1), d(2), d(3), d(4), d(5) according to PUCCH format 4 (see Non-Patent Document 4) in the frequency domain are multiplied by orthogonal sequence w ０ (k), w １ (k), w ２ (k), w ３ (k) respectively. The orthogonal sequence w ｉ (k) is defined by the specification (see Non-Patent Document 4).

[0031] FIG. 7 is a diagram showing example (3) of OCC in the embodiment of the present invention. OCC is introduced into DMRS for PUSCH. For FD (Frequency division)-OCC, 2FD-OCC adopting w ｆ (0) and w ｆ (1) is used for Basic DMRS, and 4FD-OCC adopting w ｆ (0) to w ｆ (3) is used for Enhanced DMRS. For TD (Time division)-OCC, 2TD-OCC adopting w ｌ (0) and w ｌ (1) is used for double-symbol DMRS. FIG. 7 is an example of applying TD-OCC and FD-OCC to DMRS of PUSCH.

[0032] For DMRS ports, the number of ports of basic DMRS is as follows. Configuration type 1: Single-symbol DMRS: 2 (comb / FDM) × 2 (FD-OCC) = 4 ports Double-symbol DMRS: 2 (comb / FDM) × 2 (FD-OCC) × 2 (TD-OCC) = 8 ports Configuration type 2: Single-symbol DMRS: 3 (FDM) × 2 (FD-OCC) = 6 ports Double-symbol DMRS: 3 (comb) × 2 (FD-OCC) × 2 (TD-OCC) = 12 ports

[0033] The number of ports for extended DMRS is as follows: Configuration type 1: Single symbol DMRS: 4 (comb / FDM) x 2 (FD-OCC) = 8 ports Double symbol DMRS: 4 (comb / FDM) x 2 (FD-OCC) x 2 (TD-OCC) = 16 ports Configuration type 2: Single symbol DMRS: 6 (FDM) x 2 (FD-OCC) = 12 ports Double symbol DMRS: 6 (comb) x 2 (FD-OCC) x 2 (TD-OCC) = 24 ports

[0034] Figure 8 shows an example of signal generation by PUSCH in an embodiment of the present invention. As shown in Figure 8, block b of the scrambled bits ～（ｑ） (i) is input to the sequence modulation. Block d of the complex modulation symbols. （ｑ） (i) is input to layer mapping. The complex modulation symbol x(i) of each codeword mapped to the layer is input to transform precoding. The block y of the complex modulation symbol （０） (k) is input to the precode. Precoded block z of the vector （ｐ０） (i) is input to the mapping to the physical resource.

[0035] In non-codebook-based transmission, the precoding matrix W is the identity matrix. In codebook-based transmission, the precoding matrix W depends on the number of antenna ports used for transmission (see Non-Patent Document 4).

[0036] As a combination of OCC techniques, at least one of the following OCC techniques 1)-4) may be supported when PUSCH iteration is used.

[0037] 1) Inter-slot time-domain OCC having OCC length 2 2) Inter-slot time-domain OCC having OCC lengths 2 and 4 3) Intrasymbol DFT-s pre-OCC having OCC length 2 (comb-like structure of PUCCH format 4) 4) Intrasymbol DFT-s pre-OCC having OCC lengths 2 and 4 (comb-like structure of PUCCH format 4)

[0038] Furthermore, combinations of 1) or 2) above and 3) or 4) above may be supported. Also, PUSCH repeat type B does not need to be considered. However, there are no specifications regarding the details of the OCC codes to be applied when combining OCC techniques, and how to determine whether or not to apply OCC techniques or the detailed parameters if they are applied, so the UE cannot properly implement and / or control OCC techniques. Therefore, the UE may apply the following actions.

[0039] As described above, both a single OCC technology and a combination of two OCC technologies may be options at NTN. Further specifications may be provided regarding how to support combinations of OCC technologies.

[0040] Regarding combinations of OCC techniques, orthogonal code generation for combinations of OCC techniques may be specified. Furthermore, it may be specified how to determine whether and how a combination of OCC techniques is applied (determination of OCC length and OCC index).

[0041] Note that “orthogonal code” or “set of OCC sequences” may mean a sequence of orthogonal codes applied to a PUSCH data transmission for a single multiplexed UE. For example, an orthogonal code of length 4 is [1, -1, 1, -1], and “one bit of the orthogonal code” may mean 1 or -1.

[0042] Furthermore, the combination of OCC technologies may include the following 1)-3).

[0043] 1) Interslot time-domain OCC with OCC length 2 and intra-symbol pre-DFT OCC with OCC length 2 2) Interslot time-domain OCC with OCC length 4 and intra-symbol pre-DFT OCC with OCC length 2 3) Interslot time-domain OCC with OCC length 2 and intra-symbol pre-DFT OCC with OCC length 4

[0044] The interslot time domain OCC may be replaced by the intersymbol time domain OCC or the inter-repetition TD-OCC.

[0045] The following describes the details of orthogonal codes or sequences. For orthogonal codes or OCC sequences for DFT-s-OFDM or OFDM push transmission, a Walsh matrix or cyclic shift may be used to generate the orthogonal code.

[0046] The same or different methods may be used for generating orthogonal codes or sequences in the time domain and for generating orthogonal codes or sequences in the frequency domain. These methods may be Walsh matrices or cyclic shift codes. Furthermore, when TD and FD-OCC are applied, the same mathematical techniques may be used to generate orthogonal codes or sequences in both the time domain and the frequency domain.

[0047] Let X be the length of the orthogonal code or OCC sequence for DFT-s-OFDM or OFDM push transmission. X may be a single value or multiple values. When a single value is used for X, X may be predefined or advertised from the network via DCI, RRC signaling, or MAC-CE.

[0048] When multiple values ​​are used for X, X may be predefined, notified from the network, or the actual value to be used may be notified from the network via a new DCI field. Alternatively, when multiple values ​​are used for X, the actual value to be used may be notified directly from the network.

[0049] Different values ​​may be used for different OCC types. Different parameters may be defined or set for the OCC length for TD-OCC and the OCC length for FD-OCC.

[0050] Let Xt be the OCC length for TD-OCC. Xt may be one or more values ​​from, for example, {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}. Different ranges or granularities may be set for Xt for OCCs in different time domains, such as inter-symbol OCC and inter-slot OCC.

[0051] Xt may be limited to a value equal to or smaller than the number of scheduled symbols minus the number of DMRS symbols. Alternatively, Xt may be a divisor of the number of scheduled symbols minus the number of DMRS symbols.

[0052] When intra-slot hopping is applied, Xt, the number of symbols to be scheduled, and the number of DMRS symbols may be referenced for each hop. Different Xt may be defined or set depending on whether intra-slot or inter-slot hopping is enabled or disabled.

[0053] Let Xf be the OCC length for FD-OCC. Xf may be one or more values ​​from, for example, {2, 3, 4, 6}. Different ranges or granularities may be set for Xf for OCCs in different frequency domains, such as inter-subcarrier OCC and inter-group OCC of multiple subcarriers.

[0054] When applying TD-OCC and FD-OCC, Xt and Xf may be set or defined independently in combination of the above methods, or a concatenated index may be notified or defined to specify a combination of Xt and Xf.

[0055] If the length of the OCC is X, a total of X indices may be assigned to a set of OCC sequences. For example, indices Y = 0, 1, ..., (X-1) may be defined, with each index corresponding to each element of a specific set of orthogonal codes or sequences of length X. The association between Y and a specific orthogonal code or sequence may be predefined or notified from the network.

[0056] For example, if X = 2, then Y = {0, 1}, and index 0 may correspond to the orthogonal code [+1, +1], and index 1 may correspond to [+1, -1]. Each orthogonal code may be assigned to a symbol, slot, subcarrier, or multiple subcarriers based on the determination of the OCC type.

[0057] Which index to use may be predefined or notified by the network. Which index to use may be explicitly or implicitly predefined or set or notified by the network, for example by RRC signaling, a new DCI field, a few bits of an existing DCI field, the CORESET index, the RNTI value, the CCE index, etc., or it may be implicitly predefined through the determination of X or notified by the network. X may be implicitly predefined through the determination of Y or notified by the network.

[0058] Details of the OCC sequences applied to PUSCH multiplexing may be defined in the specification. For example, one table may be predefined, or separate tables may be predefined for each OCC length. For example, in the case of an orthogonal sequence for PUSCH with an OCC length of 4, the OCC indices are 0, 1, 2, and 3, and each may correspond to an orthogonal sequence. For example, an orthogonal sequence corresponding to an OCC index notified from the network may be applied to PUSCH transmission.

[0059] Figure 9 is a flowchart illustrating an example of OCC application in an embodiment of the present invention. In step S101, the UE determines the OCC. In step S102, the UE transmits a PUSCH to the BS, which involves repeated application of the determined OCC. Note that interslot OCC is OCC applied between slots in the time domain, and intrasymbol OCC may be OCC applied within a symbol in the frequency domain. Note that the OCC technologies to be combined are described as interslot OCC and intrasymbol OCC, but are not limited to these. For example, OCC applied between symbols in the time domain within the same slot may be included.

[0060] The DCI for scheduling DG-PUCH to which OCC for PUSCH is applied may include the information shown in 1)-3) below.

[0061] 1) OCC sequence index 2) Offset from the first slot of the PUSCH to determine the offset to which slot OCC is applied 3) DMRS port

[0062] Furthermore, the notification of the OCC sequence index may be provided per UE or per UE group. Parameters related to the OCC included in the DCI may be jointly encoded.

[0063] The parameters related to the OCC shown in 1)-6) below may be set or may be explicitly or implicitly notified dynamically.

[0064] 1) OCC activation 2) OCC type and / or technology 3) Combination of OCC type and / or technology 4) OCC length 5) OCC index 6) Association of PUSCH-DMRS or DMRS port with OCC-related parameters

[0065] The UE may be notified by the BS, or the UE may determine from the definition, information regarding the start timing for applying OCC and how to notify OCC-related parameters for Msg3PUSCH repetitions.

[0066] Note that "orthogonal code" / "set of OCC sequences" / "group of OCCs" refers to a sequence of orthogonal codes applied to a PUSCH data transmission for a single multiplexed UE. For example, an orthogonal code of length 4 is [1, -1, 1, -1], and "one bit of the orthogonal code" means 1 or -1.

[0067] Note that "OCC PUSCH transmission group" or "OCC group" refers to PUSCH transmissions to which the same group of OCC sequences is applied. For example, if the OCC length is 4 and the number of repetitions is 8, the OCC bits are [w ０ lol １ lol ２ lol ３ lol ０ lol １ lol ２ lol ３ ] may also be the first "w ０ lol １ lol ２ lol ３" is the first group. The second "w ０ lol １ lol ２ lol ３ This is the second group.

[0068] The combination of OCC technologies may also include the following:

[0069] - Interslot time domain OCC with OCC length 2 and in-symbol pre-DFT OCC with OCC length 2 - Interslot time domain OCC with OCC length 4 and in-symbol pre-DFT OCC with OCC length 2 - Interslot time domain OCC with OCC length 2 and in-symbol pre-DFT OCC with OCC length 4 - Interslot time domain OCC can be replaced by inter-symbol time domain OCC

[0070] For example, OCC-related parameters may include the following:

[0071] OCC activation, OCC type or technology, combination of OCC type or technology, OCC length, OCC index, OCC start position, OCC duration

[0072] "UCI multiplexing" may mean that the UCI on PUCCH is multiplexed into the slots of the PUSCH that overlap, or that the UCI on PUCCH is multiplexed into the OCC group that includes the slots that overlap.

[0073] Multiplexing UCI onto PUCCHs to which OCC is applied is being considered. If a PUCCH without repeats overlaps with an inter-slot OCC that has any PUCCH repeats within the OCC group, the following options may be applied. Note that "overlaps" may be replaced with "overlaps".

[0074] Option A: The UCI is sent over PUCCH, and all PUCCH repetitions within the OCC group are dropped.

[0075] Option B: The UCI is multiplexed on all PUCCH iterations within an OCC group using inter-slot OCC, taking into consideration at least the following aspects: timeline conditions, processing of multiple PUCCHs overlapping with an OCC group (i.e., different PUCCHs from the perspective of a single UE), processing of PUCCHs and PUCCHs with different priorities, and processing of scheduling requests.

[0076] If a repetitive PUCCH overlaps with a PUSCH, the UE may send PUCCH in the overlapping slot but not send PUSCH (see Non-Patent Document 5).

[0077] UE is the first number N ＰＵＣＣＨ ｒｅｐｅａｔ > A PUCCH is transmitted through slot 1, and the UE transmits PUSCH repeatedly across a second number of slots by applying type A or using TB processing across multiple slots, and the PUCCH transmission overlaps with the PUSCH transmission in one or more slots, and the conditions for multiplexing the UCI in the PUSCH are met in the overlapping slots, and the UE transmits PUCCH and does not transmit PUSCH in the overlapping slots.

[0078] UE is the first number N ＰＵＣＣＨ ｒｅｐｅａｔ > A PUCCH is sent through slot 1, and a PUCCH is sent that applies repeat type B across a second number of slots, and the PUCCH transmission overlaps with actual PUCCH repeats in one or more slots, and the conditions for multiplexing UCI in PUCCH are met for the overlapping actual PUCCH repeats, and the UE sends a PUCCH and does not send overlapping actual PUCCH repeats.

[0079] The following rules are considered regarding overlaps between PUCCH and PUSCH that do not have repetitions (see Non-Patent Document 5).

[0080] - If UE transmits a PUCCH on a serving cell that does not include a UL-SCH and overlaps with a PUCCH transmission on the serving cell that contains positive SR information, UE will not transmit the PUCCH.

[0081] If the UE transmits CSI reports on overlapping physical channels, the UE applies the priority rules described in Non-Patent Document 6 for CSI report multiplexing.

[0082] - If the UE multiplexes the UCI in a PUCCH transmission that overlaps with a PUSCH transmission, and the PUSCH and PUCCH transmissions satisfy the conditions of Section 9.2.5 of Non-Patent Literature 5 for UCI multiplexing, the UE shall perform the following: - If, if the PUSCH transmission multiplexes only the HARQ-ACK information from the UCI, and the UE multiplexes aperiodic or quasi-persistent CSI reports in the PUSCH, the UE shall not transmit the PUCCH. - If the PUSCH transmission multiplexes only the HARQ-ACK information and CSI reports from the UCI, and the UE does not multiplex aperiodic or quasi-persistent CSI reports in the PUSCH, the UE shall not transmit the PUCCH.

[0083] UE is SCS setting μ １ PUSCH transmission in one slot having and SCS setting μ ２ In PUCCHs in different slots having the same type of UCI transmitted by UE, μ １ <μ ２ In that case, redundancy is not anticipated.

[0084] - The UE does not expect to multiplex HARQ-ACK information transmitted by the UE with different PUCCH signals of the same priority index using PUCCH transmission or PUCCH transmission.

[0085] - UE does not assume that, where applicable, if each of two or more PUCCHs includes aperiodic CSI reporting, the resulting PUCCH resources will overlap with two or more PUCCHs as a result of duplicated PUCCH resources.

[0086] - The UE does not expect to detect a first DCI format having relevant HARQ-ACK information without scheduling a PDSCH reception if the following conditions 1) and 2) are met, nor does the UE expect to detect a first DCI format indicating resources for a PUCCH transmission using the HARQ-ACK codebook: 1) A second DCI format is detected in a PDCCH monitoring opportunity that starts before the PDCCH monitoring opportunity for the first DCI format that schedules a PUCCH transmission in the slot. 2) The HARQ-ACK codebook for the PUCCH transmission in the slot is multiplexed.

[0087] Here, the behavior when multiple PUCCHs overlap in the repeated transmission of a PUSCH when OCC is not applied is defined. For example, in legacy operation, in Example 1 of Figure 11, PUCCH1 is multiplexed with PUSCH1, and PUCCH2 is multiplexed with PUSCH2. Also, for example, in legacy operation, in Example 2 of Figure 11, PUCCH1 is multiplexed with PUSCH1, and PUCCH2 is also multiplexed with PUSCH1. On the other hand, when OCC is applied, the UE behavior when multiple PUCCHs overlap in the time domain within a single OCC group is not defined, and therefore communication may fail.

[0088] Figure 10 is a flowchart illustrating an example of processing in an embodiment of the present invention. In step S201, when the UE transmits a PUCCH with repeated application of OCC, multiple PUCCHs overlap in the time domain within one OCC group. In step S202, the UE performs a predetermined process.

[0089] When a PUCCH transmission to which OCC is applied overlaps with a PUCCH with or without repetition, the UE may operate as shown in processes 1) to 8) below.

[0090] Figure 11 shows an example of processing (1) in an embodiment of the present invention. As shown in Examples 1 and 2 of Figure 11, we assume a case where multiple PUCCHs overlap in one OCC group.

[0091] Process 1) Figure 12 shows an example of process (2) in an embodiment of the present invention. As shown in Examples 1 and 2 of Figure 12, one PUCCH may be multiplexed into an OCC group, and other PUCCHs may be dropped or their transmission postponed.

[0092] Whether a PUCCH is multiplexed or dropped may be determined by a predefined rule. This rule may follow the priority of UCI types, for example, a priority order of PUCCH carrying HARQ-ACK information > PUCCH carrying CSI > PUCCH carrying SR. For example, this rule may follow the time order of PUCCH transmissions, prioritizing the PUCCH transmitted earlier. For example, this rule may be determined by a timeline condition.

[0093] Process 2) Figure 13 shows an example of process (3) in an embodiment of the present invention. As shown in Examples 1 and 2 of Figure 13, multiple PUCCHs may be multiplexed into an OCC group, that is, they may be multiplexed into all PUCCHs within the OCC group. For example, in Example 2 of Figure 13, PUCCH1 and PUCCH2 may be multiplexed into PUCCHX. PUCCHX may be PUCCH1, PUCCH2, or other PUCCHs. Subsequently, PUCCHX may be multiplexed into an OCC group.

[0094] Process 3) Figure 14 shows an example of process (4) in an embodiment of the present invention. As shown in Examples 1 and 2 of Figure 14, overlapping repeated PUSCH transmissions may be dropped and PUCCH may be transmitted. In Example 2 of Figure 14, PUCCH1 and PUCCH2 may be multiplexed.

[0095] Process 4) Figure 15 shows an example of process (5) in an embodiment of the present invention. As shown in Examples 1 and 2 of Figure 15, an OCC group of repeated PUCCH transmissions that includes repeated PUCCH transmissions that overlap with PUCCH may be dropped or deferred so that PUCCH is transmitted. In Example 2 of Figure 15, PUCCH1 and PUCCH2 may be multiplexed.

[0096] Process 5) The OCC may be disabled. For example, the OCC for PUSCH repeats that overlap with PUCCH may be disabled. For example, the OCC for an OCC group that includes PUSCH repeats that overlap with PUCCH may be disabled. For example, the OCC for all PUSCH repeats may be disabled.

[0097] Process 6) You may drop any overlapping PUCCHs.

[0098] Process 7) Different processes may be applied to Example 1 and Example 2 in Figures 11-15. For example, process 1) may be applied to Example 1 and process 2) may be applied to Example 2.

[0099] Process 8) Different processes may be determined for each UCI type, or the process may be determined based on which UCI type is included in the PUCCH transmission and / or PUSCH transmission. For example, Example 1 may be applied for HARQ-ACK and Example 2 for CSI.

[0100] For example, if PUCCH1 includes HARQ-ACK, PUCCH2 includes periodic CSI, and PUSCH includes aperiodic CSI, HARQ-ACK may be multiplexed onto the PUSCH containing the aperiodic CSI, and the periodic CSI may be dropped. In other words, process 1) may be applied.

[0101] For example, if PUCCH1 includes HARQ-ACK, PUCCH2 includes periodic CSI, and PUSCH does not include CSI, then HARQ-ACK and periodic CSI may be multiplexed on PUSCH. In other words, process 2) may be applied.

[0102] Note that PUCCH may be replaced with UCI.

[0103] UE can report the following capabilities:

[0104] The ability of each of the actions mentioned above. • The ability of each option in an action, or the ability of a combination of options. • The ability of each choice in an action, or the ability of a combination of choices.

[0105] UEs can report the above capabilities for each frequency. For example, capabilities for each UE, each FR1, FR2, FR2-1, FR2-2, each SCS, each band or bandwidth, each BC, each FC, or each FSPC.

[0106] The UE can report the above capabilities for each cell. Capabilities per UE, per cell, or per TDD and FDD.

[0107] Throughout the above operations, whether they apply, and which operations apply, or / or which options or alternatives are used, may be determined by: • Setting by higher-layer parameters; • Determining by relevant higher-layer parameters; • Notifying by MAC-CE or DCI; • Determining based on UE capability; • Described in the operations described above; • Based on the conditions described in the operations described above; • Determining by the settings of higher-layer parameters / MAC-CE / DCI and reported UE capability (a combination of the above determinations).

[0108] Throughout the entire process, multiple options and alternatives can be combined into a single option or alternative.

[0109] Throughout its operation, the UE may assume that certain behaviors, behavioral options, or behavioral alternatives may apply only when the UE reports support for a particular feature or model.

[0110] The UE can receive information from the NW as the following types (the NW can be referred to as gNB throughout the entire operation):

[0111] - Information via upper-layer signaling (e.g., RRC messages / LPP messages) - MAC CE with a new LCID in the MAC CE subheader - Extending existing MAC CEs (e.g., introducing new octets) - DCI - DCI field: Existing DCI field or newly introduced DCI field - RNTI: DCI with CRC scrambled by existing RNTI or newly introduced RNTI - DCI format: Existing DCI format or newly introduced DCI format - Combinations of the above information

[0112] UE can receive information from NW in the following periodic types: Option 1: Periodic Option 2: Semi-persistent or quasi-persistent (triggered by UE or gNB notifications) Option 3: Aperiodic (triggered by UE or gNB notifications)

[0113] Furthermore, the UE can report information to the NW in the following types (the NW can be referred to as gNB throughout the proposal): • Information via upper-layer signaling (e.g., RRC messages / LPP messages) • MAC CE with a new LCID in the MAC CE subheader • Extending existing MAC CEs (e.g., introducing new octets) • UCI • UCI on PUCCH or PUSCH • Combinations of the above information

[0114] Furthermore, the UE can report information to the NW in the following periodic types: Option 1: Periodic Option 2: Semi-permanent or quasi-persistent (triggered by UE or gNB notifications) Option 3: Aperiodic (triggered by UE or gNB notifications)

[0115] By applying OCC to the uplink channel while considering overlap with other signals, the above operation makes it possible to increase the UL capacity and improve throughput in the system.

[0116] In other words, it is possible to increase the uplink capacity in wireless communication systems.

[0117] (Device Configuration) Next, an example of the functional configuration of the base station 10 and terminal 20 that perform the processes and operations described above will be explained. The base station 10 and terminal 20 include the functions to carry out the above-described embodiment. However, the base station 10 and terminal 20 may each be equipped with only some of the functions in the embodiment.

[0118] <Base Station 10> Figure 16 is a diagram showing an example of the functional configuration of a base station 10 in an embodiment of the present invention. As shown in Figure 16, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Figure 16 is merely an example. Any functional classification and functional unit names are acceptable as long as they can perform the operations according to the embodiment of the present invention.

[0119] The transmitting unit 110 includes the function of generating a signal to be transmitted to the terminal 20 and transmitting the signal wirelessly. The transmitting unit 110 also transmits inter-network node messages to other network nodes. The receiving unit 120 includes the function of receiving various signals transmitted from the terminal 20 and obtaining information from the received signals, for example, higher layer information. The transmitting unit 110 also has the function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, etc. to the terminal 20. The receiving unit 120 also receives inter-network node messages from other network nodes.

[0120] The configuration unit 130 stores pre-configured configuration information and various configuration information to be transmitted to the terminal 20. The contents of the configuration information include, for example, information related to communication at NTN.

[0121] As described in the embodiment, the control unit 140 performs control related to communication in NTN. The control unit 140 also controls communication with terminal 20 based on the UE capability report regarding wireless parameters received from terminal 20. The signal transmission function of the control unit 140 may be included in the transmission unit 110, and the signal reception function of the control unit 140 may be included in the reception unit 120.

[0122] <Terminal 20> Figure 17 is a diagram showing an example of the functional configuration of terminal 20 in an embodiment of the present invention. As shown in Figure 17, terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Figure 17 is merely an example. Any functional classification and functional unit names are acceptable as long as they can perform the operations according to the embodiment of the present invention.

[0123] The transmitting unit 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly. The receiving unit 220 wirelessly receives various signals and acquires signals from higher layers from the received physical layer signals. The receiving unit 220 also has the function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, etc. transmitted from the base station 10. For example, the transmitting unit 210 transmits PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel), etc. to other terminals 20 as D2D communication, and the receiving unit 120 receives PSCCH, PSSCH, PSDCH or PSBCH, etc. from other terminals 20.

[0124] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220. The setting unit 230 also stores pre-configured setting information. The content of the setting information includes, for example, information related to NTN communications.

[0125] The control unit 240 performs control related to communication in NTN, as described in the embodiment. The signal transmission function of the control unit 240 may be included in the transmission unit 210, and the signal reception function of the control unit 240 may be included in the reception unit 220.

[0126] (Hardware Configuration) The block diagrams (Figures 16 and 17) used in the description of the above embodiments show functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may be realized by combining the one device or the multiple devices with software.

[0127] Functions include, but are not limited to, judgment, decision, determination, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, assumption, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission is called a transmitting unit or transmitter. In all cases, as mentioned above, the method of implementation is not particularly limited.

[0128] For example, the base station 10, terminal 20, etc. in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. Figure 18 is a diagram showing an example of the hardware configuration of the base station 10 and terminal 20 according to one embodiment of the present disclosure. The above-mentioned base station 10 and terminal 20 may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0129] In the following explanation, the term "device" can be read as "circuit," "device," "unit," etc. The hardware configuration of the base station 10 and terminal 20 may include one or more of the devices shown in the figure, or it may be configured without some of the devices.

[0130] Each function in the base station 10 and terminal 20 is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and storage device 1002, which allows the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of data reading and writing in the storage device 1002 and auxiliary storage device 1003.

[0131] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may consist of a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic units, registers, etc. For example, the control unit 140, control unit 240, etc., described above may be implemented by the processor 1001.

[0132] Furthermore, the processor 1001 reads programs (program code), software modules, or data from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. For example, the control unit 140 of the base station 10 shown in Figure 16 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Also, for example, the control unit 240 of the terminal 20 shown in Figure 17 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Although the above-described processes have been explained as being executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The program may also be transmitted from the network via a telecommunications line.

[0133] The storage device 1002 is a computer-readable recording medium and may consist of at least one of the following: ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. The storage device 1002 may also be called a register, cache, main memory, etc. The storage device 1002 can store executable programs (program code), software modules, etc., for implementing a communication method according to one embodiment of the present disclosure.

[0134] The auxiliary storage device 1003 is a computer-readable recording medium and may consist of at least one of the following: an optical disc such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital multipurpose disk, a Blu-ray® disk), a smart card, flash memory (e.g., a card, a stick, a key drive), a floppy® disk, a magnetic strip, etc. The above-mentioned storage medium may also be a database, server, or other suitable medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.

[0135] The communication device 1004 is hardware (transmitting / receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc. The communication device 1004 may be configured to include, for example, a high-frequency switch, duplexer, filter, frequency synthesizer, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the transmitting and receiving antenna, amplifier section, transmitting and receiving section, transmission path interface, etc., may be implemented by the communication device 1004. The transmitting and receiving section may be implemented in a physically or logically separated manner, with a transmitting section and a receiving section.

[0136] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, LED lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0137] Furthermore, each device, such as the processor 1001 and the storage device 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0138] Furthermore, the base station 10 and terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array), and some or all of each functional block may be realized by such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0139] Figure 19 shows an example of the configuration of vehicle 2001. As shown in Figure 19, vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, 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. Each aspect / embodiment described in this disclosure may be applied to a communication device mounted on vehicle 2001, for example, to the communication module 2013.

[0140] The drive unit 2002 consists of, for example, an engine, a motor, or a hybrid of an engine and a motor. 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, which is operated by the user.

[0141] The electronic control unit 2010 consists of a microprocessor 2031, memory (ROM, RAM) 2032, and communication ports (IO ports) 2033. Signals from various sensors 2021 to 2029 installed in the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0142] Signals from various sensors 2021 to 2029 include current signals from current sensor 2021 for sensing motor current, front or rear wheel rotation speed signals acquired by rotation speed sensor 2022, front or rear wheel air pressure signals acquired by air pressure sensor 2023, vehicle speed signals acquired by vehicle speed sensor 2024, acceleration signals acquired by acceleration sensor 2025, accelerator pedal depression signals acquired by accelerator pedal sensor 2029, brake pedal depression signals acquired by brake pedal sensor 2026, shift lever operation signals acquired by shift lever sensor 2027, and detection signals acquired by object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0143] The Information Service Unit 2012 consists of various devices for providing (outputting) various types of information such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, television, and radio, and one or more ECUs that control these devices. The Information Service Unit 2012 uses information acquired from external devices via a communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001. The Information Service Unit 2012 may include input devices that accept input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) and output devices that perform output to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).

[0144] The driver assistance system unit 2030 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System)), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. The driver assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize driver assistance functions or autonomous driving functions.

[0145] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via its communication port. For example, the communication module 2013 sends and receives data via the communication port 2033 between the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, the microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021-29 provided in the vehicle 2001.

[0146] 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 external devices. For example, it can send and receive various types of information with external devices 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 or a mobile station.

[0147] The communication module 2013 may transmit at least one of the following to an external device via wireless communication: signals from the various sensors 2021-2028 input to the electronic control unit 2010, information obtained based on said signals, and information based on input from an external source (user) obtained via the information service unit 2012. The electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc., may also be called input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include the information based on the above input.

[0148] The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device and displays it on the information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may also be called an output unit, which outputs information (for example, outputs information to devices such as displays and speakers based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the various information received from the external device 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 the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021-2029, etc., provided in the vehicle 2001.

[0149] (Summary of Embodiments) (Clause 1) A terminal comprising: a control unit that determines an OCC (Orthogonal Cover Code) to be applied to a repetition of a physical uplink sharing channel modulated by DFT-s-OFDM (Discrete fourier transform spread Orthogonal Frequency Division Multiplexing) or OFDM; and a transmission unit that transmits the repetition of the physical uplink sharing channel to a base station to which the OCC is applied, wherein the control unit determines the processing when a plurality of physical uplink control channels overlap a group of repetitions of the physical uplink sharing channel to which the same OCC is applied. (Clause 2) The terminal according to Clause 1, wherein when a plurality of physical uplink control channels overlap a group of repetitions of the physical uplink sharing channel to which the same OCC is applied, the control unit multiplexes the UCI (Uplink Control Information) included in one of the plurality of physical uplink control channels into the group. (3) The terminal according to paragraph 1, wherein the control unit multiplexes the UCI (Uplink Control Information) included in all of the multiple physical uplink control channels into the group when multiple physical uplink control channels overlap with a group of repeating physical uplink sharing channels to which the same OCC is applied. (4) The terminal according to paragraph 1, wherein the control unit multiplexes the repeating physical uplink sharing channels that overlap with the multiple physical uplink control channels when multiple physical uplink control channels overlap with a group of repeating physical uplink sharing channels to which the same OCC is applied. (5) The terminal according to paragraph 1, wherein the control unit multiplexes the group of repeating physical uplink sharing channels when multiple physical uplink control channels overlap with a group of repeating physical uplink sharing channels to which the same OCC is applied.(Clause 6) A communication method in which a terminal performs the following steps: a procedure for determining an OCC (Orthogonal Cover Code) to be applied to a repetition of a physical uplink sharing channel modulated by DFT-s-OFDM (Discrete fourier transform spread Orthogonal Frequency Division Multiplexing) or OFDM; a procedure for transmitting the repetition of the physical uplink sharing channel to a base station to which the OCC is applied; and a procedure for determining how to process when multiple physical uplink control channels overlap in a group of repetitions of the physical uplink sharing channel to which the same OCC is applied.

[0150] Any of the above configurations can increase the uplink capacity in a wireless communication system. Furthermore, according to claim 2-5, by applying OCC to the uplink channel while considering phase continuity, it is possible to increase the UL capacity and improve throughput in the system.

[0151] (Supplement to Embodiments) Embodiments of the present invention have been described above, but the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, substitutions, etc. Specific numerical examples have been used to facilitate understanding of the invention, but unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention, and matters described in two or more items may be combined as needed, and matters described in one item may be applied to matters described in another item (as long as they do not contradict each other). The boundaries of functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical parts. The operation of multiple functional units may be physically performed by one part, or the operation of one functional unit may be physically performed by multiple parts. The processing procedures described in the embodiments may be rearranged as long as they do not contradict each other. For the convenience of explaining the processing, the base station 10 and terminal 20 have been described using functional block diagrams, but such devices may be realized in hardware, software, or a combination thereof. The software operated by the processor of the base station 10 according to an embodiment of the present invention and the software operated by the processor of the terminal 20 according to an embodiment of the present invention may be stored in any suitable storage medium such as random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or other appropriate storage medium.

[0152] Furthermore, notification of information is not limited to the embodiments described herein and may be carried out by other means. For example, notification of information may be carried out by physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling), broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or combinations thereof. Also, RRC signaling may be called RRC messages, and may be, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc.

[0153] Each aspect / embodiment described in this disclosure may be applied to at least one of the following systems: LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), NR (new Radio), W-CDMA®, GSM®, CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other appropriate systems, as well as next-generation systems extended based thereon. Furthermore, multiple systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A with 5G).

[0154] The processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described herein may be reordered, provided they are consistent with each other. For example, the methods described herein present various step elements in an exemplary order and are not limited to that specific order.

[0155] In this specification, specific operations performed by the base station 10 may, in some cases, be performed by its upper node. In a network consisting of one or more network nodes having a base station 10, it is clear that various operations performed for communication with the terminal 20 can be performed by the base station 10 and at least one of the other network nodes (for example, an MME or S-GW, but not limited to these). Although the above example illustrates the case where there is one other network node besides the base station 10, the other network node may be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0156] The information or signals described in this disclosure may be output from a higher layer (or lower layer) to a lower layer (or higher layer). They may also be input and output via multiple network nodes.

[0157] Input and output information may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information may be overwritten, updated, or appended to. Output information may be deleted. Input information may be transmitted to other devices.

[0158] The determination in this disclosure may be made by a value represented by one bit (0 or 1), by a Boolean value (true or false), or by a numerical comparison (for example, a comparison with a predetermined value).

[0159] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0160] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0161] The information, signals, etc. described in this disclosure may be represented using any of the various different techniques. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0162] In addition, terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and symbol may be a signal (signaling). Also, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, cell, frequency carrier, etc.

[0163] The terms “system” and “network” as used in this disclosure are interchangeable.

[0164] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a given value, or other corresponding information. For example, wireless resources may be indicated by an index.

[0165] The names used for the parameters described above are not restrictive in any way. Furthermore, the formulas and other expressions using these parameters may differ from those expressly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

[0166] In this disclosure, terms such as "Base Station (BS)", "wireless base station", "base station equipment", "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.

[0167] A base station can accommodate one or more (e.g., three) cells. If a base station accommodates multiple cells, the entire coverage area of ​​the base station can be divided into multiple smaller areas, each of which may also be provided with communication services by a base station subsystem (e.g., a Remote Radio Head (RRH)). The terms “cell” or “sector” refer to part or all of the coverage area of ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

[0168] In this disclosure, the transmission of information by a base station to a terminal may be interpreted as the base station instructing the terminal to perform control or operation based on the information.

[0169] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0170] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or several other appropriate terms.

[0171] 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 also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body refers to a movable object, and its speed of movement is arbitrary. This also includes the case when the mobile body is stationary. The mobile body includes, but is not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and items mounted on them. The mobile body may also be a mobile body that moves autonomously based on operation commands. It 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). Furthermore, at least one of the base station and the mobile station may 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 IoT (Internet of Things) device such as a sensor.

[0172] Furthermore, the term "base station" in this disclosure may be interpreted as "user terminal." For example, the various aspects / embodiments of this disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, the terminals 20 may have the functions that the base station 10 has. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, uplink channel, downlink channel, etc., may be interpreted as side channel.

[0173] Similarly, the term "user terminal" in this disclosure may be replaced with "base station." In this case, the base station may be configured to have the same functions as the user terminal described above.

[0174] As used in this disclosure, the terms “determining” and “determining” may encompass a wide variety of actions. “Determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, or inquiring (e.g., searching in a table, database, or other data structure), or ascertaining. “Determining” may also include receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, or accessing (e.g., accessing data in memory). Furthermore, "judgment" and "decision" can include considering something as having been "judged" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment" and "decision" can include considering something as having been "judged" or "decided" after some action. Also, "judgment (decision)" can be reinterpreted as "assuming," "expecting," or "considering."

[0175] The terms “connected,” “coupled,” or any variation thereof, mean any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be reinterpreted as “access.” As used in this disclosure, two elements may be considered to be “connected” or “coupled” with each other using at least one of one or more wires, cables, and printed electrical connections, and, in some non-limiting and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0176] The reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applicable standard.

[0177] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0178] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, references to the first and second elements do not imply that only two elements may be employed, or that the first element must precede the second element in any way.

[0179] In the configuration of each of the above devices, "means" may be replaced with "part," "circuit," "device," etc.

[0180] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0181] A wireless frame may consist of one or more frames in the time domain. Each of these frames in the time domain may be called a subframe. A subframe may further consist of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0182] Numerical logic may be communication parameters applied to at least one of the transmission and reception of a signal or channel. Numerical logic may include, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processes performed by the transceiver in the frequency domain, and specific windowing processes performed by the transceiver in the time domain.

[0183] A slot may consist of one or more symbols in the time domain (such as OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.). A slot may also be a time unit based on neurologic.

[0184] A slot may include multiple minislots. Each minislot may consist of one or more symbols in the time domain. Minislots may also be called subslots. Minislots may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called a PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called a PDSCH (or PUSCH) mapping type B.

[0185] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Different names may be used for each of these terms.

[0186] For example, one subframe may be called a Transmission Time Interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. In other words, at least one of a subframe and a TTI may be a subframe in existing LTE (1 ms), 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.

[0187] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, the base station schedules each terminal 20 to allocate wireless resources (such as the frequency bandwidth and transmission power available to each terminal 20) in TTI units. However, the definition of TTI is not limited to this.

[0188] TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, code words, etc., or it may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the actual time interval (e.g., number of symbols) in which the transport block, code block, code word, etc. are mapped may be shorter than the TTI.

[0189] Furthermore, if one slot or one mini-slot is referred to as a TTI, then one or more TTIs (i.e., one or more slots or one or more mini-slots) may constitute the minimum time unit for scheduling. In addition, the number of slots (number of mini-slots) that constitute this minimum time unit for scheduling may be controlled.

[0190] A TTI with a time length of 1 ms may be called a normal TTI, a long TTI, a normal subframe, a long subframe, a 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 mini slot, a sub slot, a slot, etc.

[0191] Furthermore, long TTIs (e.g., normal TTIs, subframes, etc.) may be interpreted as TTIs with a time length exceeding 1 ms, and short TTIs (e.g., shortened TTIs, etc.) may be interpreted as TTIs with a TTI length less than that of a long TTI but 1 ms or more.

[0192] A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and in the frequency domain, it may contain one or more consecutive subcarriers. The number of subcarriers in an RB may be the same regardless of the neurology, for example, 12. The number of subcarriers in an RB may be determined based on the neurology.

[0193] Furthermore, the time domain of the RB may contain one or more symbols and may be the length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc., may each consist of one or more resource blocks.

[0194] One or more RBs may also be called a Physical RB (PRB), Sub-Carrier Group (SCG), Resource Element Group (REG), PRB pair, RB pair, etc.

[0195] Furthermore, a resource block may consist of one or more resource elements (REs). For example, one RE may be a radio resource area comprising one subcarrier and one symbol.

[0196] A Bandwidth Part (BWP), also known as a partial bandwidth, may represent a subset of consecutive common resource blocks (RBs) for a particular neurology in a given carrier. These common RBs may be identified by an index of the RBs relative to a common reference point of the carrier. The PRBs may be defined and numbered within a given BWP.

[0197] A BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be set within a single carrier for a UE.

[0198] At least one of the configured BWPs may be active, and the UE does not need to assume that it will transmit or receive a predetermined signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0199] The structures described above, such as wireless frames, subframes, slots, minislots, and symbols, are merely illustrative. For example, the number of subframes included in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, and the number of symbols, symbol length, and cyclic prefix (CP) length within a TTI can be varied in various ways.

[0200] In this disclosure, if articles are added through translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0201] In this disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "combine" may be interpreted similarly to "different."

[0202] Each aspect / embodiment described in this disclosure may be used individually, in combination, or switched between as needed during implementation. Furthermore, notification of specific information (e.g., notification that "X is") is not limited to explicit notification, but may also be implicit (e.g., by not providing such notification).

[0203] Although the present disclosure has been described in detail above, it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the intent and scope of the present disclosure as defined by the claims. Therefore, the descriptions in the present disclosure are illustrative and not intended to be restrictive in any way.

[0204] This international patent application claims priority based on Japanese Patent Application No. 2025-057323, filed on 28 March 2025, and the entire contents of Japanese Patent Application No. 2025-057323 are incorporated herein by reference.

[0205] 10 Base station 110 Transmitting unit 120 Receiving unit 130 Setting unit 140 Control unit 20 Terminal 210 Transmitting unit 220 Receiving unit 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheel 2008 Rear wheel 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 Rotation speed 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 Driver assistance system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (I / O port)

Claims

1. A terminal comprising: a control unit that determines an OCC (Orthogonal Cover Code) to be applied to a repetition of a physical uplink sharing channel modulated by DFT-s-OFDM (Discrete fourier transform spread Orthogonal Frequency Division Multiplexing) or OFDM; and a transmission unit that transmits the repetition of the physical uplink sharing channel to a base station to which the OCC is applied, wherein the control unit determines the processing to be performed when multiple physical uplink control channels overlap with a group of repetitions of the physical uplink sharing channel to which the same OCC is applied.

2. The terminal according to claim 1, wherein the control unit multiplexes the UCI (Uplink Control Information) included in one of the multiple physical uplink control channels into the group when the multiple physical uplink control channels overlap with a repeating group of the physical uplink sharing channels to which the same OCC is applied.

3. The terminal according to claim 1, wherein the control unit multiplexes the UCI (Uplink Control Information) included in all of the multiple physical uplink control channels into the group when the multiple physical uplink control channels overlap into a repeating group of the physical uplink sharing channels to which the same OCC is applied.

4. The terminal according to claim 1, wherein the control unit drops the repetitions of the physical uplink sharing channel that overlap with the multiple physical uplink control channels when the multiple physical uplink control channels overlap with the group of repetitions of the physical uplink sharing channel to which the same OCC is applied.

5. The terminal according to claim 1, wherein the control unit drops a group of repeating physical uplink sharing channels when a plurality of physical uplink control channels overlap with a group of repeating physical uplink sharing channels to which the same OCC is applied.

6. A communication method in which a terminal performs the following steps: determining an OCC (Orthogonal Cover Code) to apply to a repetition of a physical uplink sharing channel modulated by DFT-s-OFDM (Discrete fourier transform spread Orthogonal Frequency Division Multiplexing) or OFDM; transmitting the repetition of the physical uplink sharing channel to a base station to which the OCC is applied; and determining how to process a case where multiple physical uplink control channels overlap in a group of repetitions of the physical uplink sharing channel to which the same OCC is applied.

Images