Terminal and communication method

Abstract

To provide a terminal that can appropriately determine the carrier / cell to which K0 / K2 is applied in multi-carrier extension for NR Phase 2.SOLUTION: A terminal includes a communication unit that communicates using multiple carriers with different subcarrier spacing, and a control unit that simultaneously schedules communication channels of the multiple carriers on the basis of a single value included in a downlink control signal, and the control unit determines which of the multiple carriers to apply an offset between the downlink control signal and the communication channel.SELECTED DRAWING: Figure 15

Description

[Technical Field]

[0001] The present disclosure relates to a terminal and a communication method. [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] In 3GPP Release (Rel)-17, several techniques were specified for coverage enhancement of uplink signals such as PUSCH, PUCCH, and Msg3 PUSCH of the random access procedure (see, for example, Non-Patent Documents 1 and 2). Note that PUSCH is an abbreviation for Physical Uplink Shared Channel. PUSCH is also an abbreviation for Physical Uplink Control Channel.

[0004] In 3GPP, multi-carrier enhancement of downlink and uplink signals is being discussed (see, for example, Non-Patent Document 3). For example, scheduling of downlink and uplink signals of multiple cells using a single DCI is being discussed. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] 3GPP TS 38.214 V17.7.0 (2023-09) [Non-patent document 2] 3GPP TS 38.300 V17.6.0 (2023-09) [Non-patent document 3] “New WID on Multi-carrier enhancements”, RP-213577, 3GPP TSG RAN Meeting #94e, Electronic Meeting, Dec. 6 - 17, 2021 Summary of the Invention

[0006] In RAN#105, multi-carrier extension for NR Phase 2 was agreed upon. However, in the multi-carrier extension for NR Phase 2, the determination of the carrier / cell to which K0 / K2 is applied was not sufficiently studied, and further study is required.

[0007] One aspect of the present disclosure is to provide a terminal and a communication method that can appropriately determine the carrier / cell to which K0 / K2 is applied in multicarrier extension for NR Phase 2. [Means for solving the problem]

[0008] A terminal according to one embodiment of the present disclosure includes a communication unit that communicates using multiple carriers with different subcarrier spacings, and a control unit that simultaneously schedules communication channels of the multiple carriers based on a single value included in a downlink control signal, and the control unit determines which of the multiple carriers to apply an offset between the downlink control signal and the communication channel. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram illustrating an example of a wireless communication system according to an embodiment. [Figure 2] 1A and 1B are diagrams illustrating examples of the configuration of a radio frame, a subframe, and a slot used in a radio communication system. [Figure 3] FIG. 1 is a diagram illustrating multi-carrier scheduling. [Figure 4] FIG. 1 is a diagram illustrating self-carrier scheduling. [Figure 5] FIG. 1 is a diagram illustrating cross-carrier scheduling. [Figure 6] FIG. 10 is a diagram illustrating scheduling in DCI formats 1_3. [Figure 7] FIG. 1 is a diagram illustrating a reference cell. [Figure 8] This is a diagram showing some of the agreements for RAN#105. [Figure 9] FIG. 1 is a diagram illustrating MASOI. [Figure 10] FIG. 10 is a diagram illustrating a table used to determine K0 / K2. [Figure 11] FIG. 10 is a diagram illustrating types of DCI fields. [Figure 12] FIG. 10 is a diagram explaining the agreements regarding the DCI field of MASOI. [Figure 13] FIG. 1 is a diagram illustrating proposals regarding the DCI field of MASOI. [Figure 14] FIG. 2 is a block diagram showing an example of the configuration of a base station. [Figure 15] FIG. 2 is a block diagram showing an example of the configuration of a terminal. [Figure 16] FIG. 2 is a diagram illustrating an example of a hardware configuration of a base station and a terminal according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment according to one aspect of the present disclosure will be described with reference to the drawings. In the present disclosure, a reference SCS / cell for determining K0 / K2 is defined so that the minimum applicable scheduling offset indicator can be applied to multi-cell PDSCH / PUSCH scheduling with different SCS / carrier types.

[0011] K0 may indicate an offset between the slot of DCI (or PDCCH) and the slot of PDSCH. K0 may be information indicating an offset from the slot in which DCI is received to the slot to which PDSCH is allocated. K2 may indicate an offset between the slot of DCI (or PDCCH) and the slot of PUSCH. K2 may be information indicating an offset from the slot in which DCI is received to the slot to which PUSCH is allocated.

[0012] <Wireless system configuration> 1 is a diagram showing an example of a wireless communication system 10 according to an embodiment. The wireless communication system 10 is a wireless communication system conforming to New Radio (NR) and includes a Next Generation-Radio Access Network (hereinafter referred to as NG-RAN 20 and a terminal 200). The wireless communication system 10 may be a wireless communication system conforming to a scheme called 5G, Beyond 5G, 5G Evolution, or 6G. The terminal is also referred to as User Equipment (UE).

[0013] The NG-RAN 20 includes a base station 100. The base station 100 may be, for example, a gNB or an ng-eNB. The NG-RAN 20 is connected to a core network (e.g., 5GC, not shown) conforming to the NR. The NG-RAN 20 and the 5GC may be simply referred to as a network.

[0014] Base station 100 is a radio base station conforming to NR, and performs NR radio communication with terminal 200. Base station 100 and terminal 200 are capable of supporting Massive MIMO (Multi-Input Multi-Output), which generates a more directional beam by controlling radio signals transmitted from multiple antenna elements, Carrier Aggregation (CA), which uses multiple component carriers (CCs) by bundling them together, and Dual Connectivity (DC), which simultaneously communicates between multiple NG-RAN nodes and terminals.

[0015] The wireless communication system 10 supports FR1 and FR2. The frequency bands of each FR (Frequency Range) are as follows: FR1: 410 MHz to 7.125 GHz FR2: 24.25 GHz~52.6 GHz

[0016] FR1 may use a Sub-Carrier Spacing (SCS) of 15 kHz, 30 kHz, 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 (240 kHz may be included), and may use a bandwidth (BW) of 50 to 400 MHz.

[0017] The SCS may be interpreted as a numerology, which is defined in 3GPP TS38.300 and corresponds to one subcarrier spacing in the frequency domain.

[0018] Furthermore, the wireless communication system 10 may also support frequency bands higher than the FR2 frequency band. Specifically, the wireless communication system 10 may support frequency bands exceeding 52.6 GHz up to 114.25 GHz. Such high frequency bands may be referred to as "FR2x" for convenience. When using a frequency band exceeding 52.6 GHz, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) with a larger SCS may be applied.

[0019] FIG. 2 is a diagram showing an example of the configuration of a radio frame, subframe, and slot used in the radio communication system 10. As shown in FIG. 2, one slot is made up of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and slot period). Note that the number of symbols making up one slot does not necessarily have to be 14 symbols (for example, 28 or 56 symbols). Also, the number of slots per subframe may differ depending on the SCS. Furthermore, the SCS may be wider than 240 kHz.

[0020] 2 may be called a time domain, a time region, a symbol period, a symbol time, etc. The frequency direction may be called a frequency domain, a resource block, a resource block group, a subcarrier, a BWP (Bandwidth Part), a subchannel, a common frequency resource, etc.

[0021] <Multi-carrier extension> In the formulation of Rel-18, 3GPP is discussing multi-carrier extension of downlink and uplink signals.

[0022] For example, multi-cell PUSCH / PDSCH scheduling using a single DCI, which will be described in <Multi-carrier scheduling> below, has been discussed and several agreements have been reached.

[0023] Note that multi-cell PDSCH / PUSCH scheduling may also be referred to as multi-carrier PDSCH / PUSCH scheduling. Furthermore, multi-cell PDSCH / PUSCH scheduling may also be referred to as multi-cell scheduling or multi-carrier scheduling.

[0024] Multi-cell PDSCH / PUSCH scheduling may also be referred to as single DCI multi-cell PDSCH / PUSCH scheduling, single DCI multi-carrier PDSCH / PUSCH scheduling, single DCI multi-cell scheduling, or single DCI multi-carrier scheduling.

[0025] Hereinafter, multi-cell PDSCH / PUSCH scheduling may be referred to as multi-carrier scheduling.

[0026] <Multi-carrier scheduling> Fig. 3 is a diagram illustrating multi-carrier scheduling. Fig. 4 is a diagram illustrating self-carrier scheduling. Fig. 5 is a diagram illustrating cross-carrier scheduling. CC#1 to CC#3 shown in Figs. 3 to 5 indicate CCs. A CC may also be referred to as a carrier or a cell. Figs. 4 and 5 are shown for comparison with the multi-carrier scheduling of Fig. 3.

[0027] As shown in FIG. 3, in multi-carrier scheduling, one DCI in one CC#1 schedules PDSCH / PUSCH in multiple CC#1 to CC#3.

[0028] As shown in Figure 4, in self-carrier scheduling, one DCI in one CC#1 schedules a PDSCH / PUSCH in one CC#1 (the same CC as the CC of the DCI). One DCI in one CC#2 schedules a PDSCH / PUSCH in one CC#2. One DCI in one CC#3 schedules a PDSCH / PUSCH in one CC#3.

[0029] As shown in FIG. 5, in cross-carrier scheduling, multiple DCIs in one CC#1 schedule PDSCHs / PUSCHs in multiple CC#1 to CC#3.

[0030] Multi-carrier scheduling can be considered as one DCI scheduling PDSCH / PUSCH in multiple CCs, whereas self-carrier scheduling and cross-carrier scheduling can be considered as multiple DCIs scheduling PDSCH / PUSCH in multiple CCs.

[0031] In multi-carrier scheduling, one DCI schedules PDSCH / PUSCH in multiple CCs, so the load of DCI monitoring (PDCCH monitoring) on ​​a terminal can be reduced compared to self-carrier scheduling and cross-carrier scheduling. For example, in multi-carrier scheduling, the number of BDs (Blind Detections) of PDCCHs on a terminal can be reduced.

[0032] Furthermore, multi-carrier scheduling can reduce the total overhead in DCI compared to self-carrier scheduling and cross-carrier scheduling. For example, in a scenario where it is not necessary to notify different information to each of CC#1 to CC#3, common information can be notified in one DCI (DCI field), and the total overhead in DCI can be reduced.

[0033] <DCIフォーマット0_3 / 1_3> It has been agreed that the DCI format for multi-carrier scheduling of PUSCH is called DCI format 0_3. It has been agreed that the DCI format for multi-carrier scheduling of PDSCH is called DCI format 1_3. DCI formats 0_3 / 1_3 can be simultaneously scheduled for combinations of cells included in a set of cells to be scheduled (Set of cells). Hereinafter, Set of cells may be referred to as SoCs.

[0034] FIG. 6 is a diagram illustrating scheduling in DCI format 1_3. One SoC is composed of a maximum of four cells (CCs). One cell is included in only one SoC. In the example of FIG. 6, Set of cells 1 includes CCs #1 / 2 / 3 / 4, and Set of cells 2 includes CCs #5 / 6 / 7. Information about the configuration of the SoCs is reported by higher layer signaling, for example, RRC signaling.

[0035] DCI formats 0_3 / 1_3 can be scheduled simultaneously for combinations of cells included in SoCs.

[0036] For example, the PDCCH (DCI format 1_3) shown by arrow A6a in Fig. 6 can simultaneously schedule PDSCHs in four CCs #1 / 2 / 3 / 4 of Set of cells 1. For example, the PDCCH (DCI format 1_3) shown by arrow A6b in Fig. 6 can simultaneously schedule PDSCHs in three CCs #5 / 6 / 7 of Set of cells 2.

[0037] Similarly, PUSCH can be scheduled simultaneously with PUCCH (DCI format 0_3).

[0038] In Fig. 6, the PDCCH is transmitted by a cell (#0) different from the cells (CC#1 to CC#7) of Set of cells 1 and Set of cells 2, but this is not limiting. The PDCCH may be transmitted by a cell of the SoCs. For example, in Fig. 6, the PDCCH may be transmitted by a cell of CC#1. The same applies to the PUCCH.

[0039] <Reference cell> The cell that counts the DCI size, the number of PDCCH candidates (BDs), and the number of CCEs is called a reference cell. In multi-carrier scheduling, one reference cell is configured for each SoC. The reference cell is notified by higher layer signaling, such as RRC signaling.

[0040] Fig. 7 is a diagram illustrating a reference cell. For example, in Fig. 7, the reference cell for Set of cells 1 is set to CC#1. In this case, the DCI size / number of PDCCH candidates (BDs) / number of CCEs of the PDCCH (DCI for Set of cells 1) indicated by arrow A7a are counted in CC#1.

[0041] For example, in Fig. 7, the reference cell for Set of cells 2 is set to CC #5. In this case, the DCI size / number of PDCCH candidates (BDs) / number of CCEs of the PDCCH (DCI for Set of cells 2) indicated by arrow A7b are counted in CC #5.

[0042] <New WID: Multi-carrier enhancements for NR Phase 2> In RAN#105, multi-carrier enhancements for NR Phase 2 were agreed (see Figure 8). Multi-cell scheduling supported by Rel-18 MCE will be enhanced in the following aspects: In Rel-18, multiple cells that could be scheduled by one DCI (DCI format 0_3 / 1_3) were restricted to all having the same SCS / carrier type. In Rel-19, this restriction has been lifted, allowing co-scheduling of cells with different SCS / carrier types. In Rel-18, when scheduling multiple cells using one DCI (DCI format 0_3 / 1_3), the number of PDSCH / PUSCH per cell was limited to one. However, in Rel-19, scheduling of multiple PDSCH / PUSCH per cell becomes possible.

[0043] <Minimum applicable scheduling offset indicator> TS38.212 defines a minimum applicable scheduling offset indicator (hereinafter, sometimes referred to as MASOI) (see FIG. 9). When minimumSchedulingOffsetK0DCI-0(1)-3 is set The MASOI field included in the DCI is 1 bit. The minimum K2 applicable to the active UL BWP and the minimum K0 applicable to the active DL BWP are determined based on the MASOI and a table (see FIG. 10) that associates the MASOI with K0 / K2. The MASOI may be considered as an indicator (information or parameter) for determining the offset (minimum delay) of data scheduling. If minimumSchedulingOffsetK0DCI-0(1)-3 is not set The MASOI field included in the DCI is set to 0 bits.

[0044] It should be noted that the minimum applicable scheduling offset indicator may be used interchangeably with the minimum scheduling offset indicator.

[0045] <DCI field type in Rel-18 (1)> To clarify the discussion, the following DCI field types were agreed upon at the RAN1#110 meeting (see Figure 11). Depending on the DCI field type, the notification method for multiple scheduled cells differs. Type-1 field In the Type-1 field, one value is indicated between co-scheduled cells. The Type-1 field is further divided into three types: Type-1A field In Type-1A, one notification is commonly applied to all co-scheduled cells, in other words, one value can be applied to all co-scheduled cells. Type-1B field In the Type-1B field, one notification is an index into the joint indication table, which applies to each simultaneously scheduled cell. One notification can point to a row in the "joint indication table". Type-1C field In the Type-1C field, a notification applies only to a specific scheduled cell, in other words, a value can only apply to one cell in a cell set. Type-2 field In the Type-2 field, each co-scheduled cell has a separate notification field, i.e., a separate value can be indicated for each cell. Type-3 field In the Type-3 field, 1A or 2 is configurable.

[0046] <DCI field type in Rel-18 (2)> It was agreed that MASOI will be a 1-bit Type-1A field when configured to be present in DCI formats 0_3 / 1_3 (see Figure 12).

[0047] <r1-2503587> As mentioned above, it was agreed that MASOI would be a Type-1A field, but it is proposed to change it to a Type-1B field (see Figure 13).

[0048] <Consideration> The applicable minimum value of K0 / K2 may be interpreted differently by the SCS even if the same value is specified by minimumSchedulingOffsetK0.

[0049] However, when MASOI is defined as a type-1A field, only a common value can be set for all simultaneously scheduled cells.

[0050] Also, the above <r1-2503587>As explained above, if MASOI is changed to a type-1B field, it will be possible to set different values ​​for each simultaneously scheduled cell, but this will have a large impact on the specifications, such as changing the parameters of the joint indication table.

[0051] Considering the above, it is preferable to define MASOI as a Type-1A field and determine the SCS / cell to which the minimum value of K0 / K2 applicable to the different SCS / cells of all simultaneously scheduled cells can be applied.

[0052] Therefore, in this disclosure, an SCS / cell that is interpreted as providing the smallest value of K0 / K2 applicable to different SCS / cells of all simultaneously scheduled cells is defined as a reference SCS / cell, and a technique for determining the reference SCS / cell is provided.

[0053] <Proposal> A reference SCS / cell for determining the minimum applicable scheduling offset is defined. The reference SCS / cell to which the MASOI is applied may be considered to be indicated by a reference SCS / cell index.

[0054] The reference SCS / cell index may be determined based on at least one of the following: (1) Explicitly set from the network. (2) The lowest / highest SCS / cell index among the SoCs. (3) The lowest / highest SCS / cell index among the actual co-scheduled cells. (4) The earliest / latest scheduled cells among the actual co-scheduled cells. (5) Scheduling cell SCS. (6) It is (pre)defined by the specification.

[0055] <Proposal: Summary> According to the above proposal, the SCS / cell for which the minimum value of K0 / K2 is applied in multicarrier extension for NR Phase 2 (e.g., different SCS / carrier types) can be appropriately determined.

[0056] <Other> In the present disclosure, "PDSCH" and "PUSCH" may be interchangeable. "DCI 1_3" and "DCI 0_3" may be interchangeable. "DCI 1_1" and "DCI 0_1" may be interchangeable. "DCI 1_1" and "DCI 1_3" may be interchangeable. "DCI 0_1" and "DCI 0_3" may be interchangeable.

[0057] "Cell", "CC", "entry", "SCS", and "carrier" may be read interchangeably.

[0058] "NW" and "gNB" may be read interchangeably.

[0059] "Set (from the NW)", "set by RRC", "activated / deactivated / updated by MAC-CE", and "indicated by DCI" may be read interchangeably.

[0060] The terms index and indicator may be read interchangeably. <Base station configuration> Fig. 14 is a block diagram showing an example of the configuration of a base station 100 (gNodeB (gNB) 100) according to this embodiment. The gNB 100 includes, for example, a transmitter 101, a receiver 102, and a controller 103. The gNB 100 communicates with a UE 200 (see Fig. 15) wirelessly.

[0061] The configurations of the gNB 100 and the UE 200 described below are examples of functions related to the present embodiment. The gNB 100 and the UE 200 may have functions not shown. Furthermore, the functional divisions and / or names of the functional units are not limited as long as the functions perform the operations related to the present embodiment.

[0062] The transmitter 101 transmits a downlink (DL) signal to the UE 200. For example, under the control of the controller 103, the transmitter 101 transmits a DL signal (for example, the above-mentioned RRC, SIB, MAC CE, DCI, notification, confirmation, etc.).

[0063] The DL signal may include, for example, a downlink data signal and control information (e.g., Downlink Control Information (DCI)). The DL signal may also include information indicating scheduling related to signal transmission by the UE 200 (e.g., an UL grant). The DL signal may also include control information of higher layers (e.g., control information of Radio Resource Control (RRC)). The DL signal may also include a reference signal.

[0064] The channels used for transmitting DL signals include, for example, a downlink data channel and a downlink control channel. For example, the downlink data channel may include a PDSCH (Physical Downlink Shared Channel), and the downlink control channel may include a PDCCH (Physical Downlink Control Channel). For example, the gNB 100 transmits downlink control information to the UE 200 using the PDCCH and transmits downlink data signals using the PDSCH.

[0065] The reference signal included in the DL signal may include at least one of a demodulation reference signal (Demodulation Reference Signal (DMRS)), a Phase Tracking Reference Signal (PTRS), a Channel State Information-Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), and a Positioning Reference Signal (PRS) for position information. For example, reference signals such as DMRS and PTRS are used for demodulating downlink data signals and are transmitted using the PDSCH.

[0066] The receiver 102 receives an uplink (UL) signal transmitted from the UE 200. For example, under the control of the controller 103, the receiver 102 receives an UL signal (for example, the above-mentioned request, notification, etc.).

[0067] The transmitting unit 101 and the receiving unit 102 may be collectively referred to as a communication unit.

[0068] The control unit 103 controls the communication operations of the gNB 100, including the transmission processing of the transmission unit 101 and the reception processing of the reception unit 102.

[0069] For example, the control unit 103 acquires information such as data and control information from the upper layer and outputs it to the transmitting unit 101. The control unit 103 also outputs the data, control information, etc. received from the receiving unit 102 to the upper layer.

[0070] For example, the control unit 103 allocates resources (or channels) used for transmitting and receiving DL signals and / or resources used for transmitting and receiving UL signals based on a signal (e.g., data and control information, etc.) received from the UE 200 and / or data and control information, etc. acquired from an upper layer. Information on the allocated resources may be included in control information transmitted to the UE 200.

[0071] <Device configuration> 15 is a block diagram showing an example of the configuration of UE 200 according to the present embodiment. UE 200 includes, for example, a receiving unit 201, a transmitting unit 202, and a control unit 203. UE 200 communicates with gNB 100 by radio, for example.

[0072] The transmitter 202 transmits an UL signal to the gNB 100. For example, the transmitter 202 transmits the UL signal under the control of the controller 203. For example, the transmitter 202 may transmit an MsgA PRACH in a valid MsgA RO determined by the controller 203, and may transmit an MsgA PUSCH in a valid MsgA PO determined by the controller 203.

[0073] The UL signal may include, for example, an uplink data signal and control information (e.g., UCI). For example, information related to the processing capability of the UE 200 (e.g., UE capability) may be included. The UL signal may also include a reference signal.

[0074] The channels used for transmitting UL signals include, for example, an uplink data channel and an uplink control channel. For example, the uplink data channel includes a PUSCH (Physical Uplink Shared Channel), and the uplink control channel includes a PUCCH (Physical Uplink Control Channel). For example, the UE 200 transmits uplink control information to the gNB 100 using the PUCCH and transmits an uplink data signal using the PUSCH.

[0075] The reference signals included in the UL signal may include, for example, at least one of DMRS, PTRS, CSI-RS, SRS, and PRS. For example, the reference signals such as DMRS and PTRS are used for demodulating the uplink data signal and are transmitted using an uplink channel (for example, PUSCH).

[0076] The receiving unit 201 and the transmitting unit 202 may be collectively referred to as a communication unit.

[0077] The control unit 203 controls the communication operations of the UE 200, including the reception processing in the reception unit 201 and the transmission processing in the transmission unit 202.

[0078] For example, the control unit 203 acquires information such as data and control information from a higher layer and outputs it to the transmitting unit 202. Also, the control unit 203 outputs, for example, the data and control information received from the receiving unit 201 to the higher layer.

[0079] For example, the control unit 203 controls transmission of information to be fed back to the gNB 100. The information to be fed back to the gNB 100 may include, for example, HARQ-ACK, Channel State Information (CSI), or a Scheduling Request (SR). The information to be fed back to the gNB 100 may be included in UCI.

[0080] The communication unit may communicate using multiple carriers with different subcarrier spacings. The communication unit may perform notification based on, for example, a multicarrier extension for NR Phase 2.

[0081] The control unit 203 may co-schedule communication channels of multiple carriers based on one value included in the downlink control signal. The control unit 203 may co-schedule communication channels of multiple carriers based on DCI in the Type-1A field. The DCI may be DCI format 0_3 / DCI format 1_3. The communication channel may be PDSCH / PUSCH.

[0082] The control unit 203 may determine a carrier to which an offset between the downlink control signal and the communication channel is applied from among the plurality of carriers. The offset may be K0 / K2.

[0083] The control unit 203 may determine the carrier set by the network as the carrier to which the offset is applied.

[0084] The control unit 203 may determine the carrier with the smallest or largest subcarrier spacing among the plurality of carriers as the carrier to which the offset is to be applied.

[0085] The control unit 203 may determine the carrier with the smallest or largest subcarrier spacing among the cells that are actually co-scheduled as the carrier to which the offset is applied.

[0086] The control unit 203 may determine the carrier that is scheduled earliest or latest among the cells that are actually co-scheduled as the carrier to which the offset is applied.

[0087] The control unit 203 may determine the SCS of the scheduling cell as the carrier to which the offset is applied. For example, the control unit 203 may determine the carrier having the SCS of the scheduling cell as the carrier to which the offset is applied. The scheduling cell may be a cell to which DCI (PDCCH) is transmitted.

[0088] The present disclosure has been described above. Note that the division of items in the above description is not essential to the present disclosure, and items described in two or more items may be used in combination as needed, and items described in one item may be applied to items described in another item (unless they are inconsistent).

[0089] <Hardware configuration> The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by hardware, software, or a combination of these. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized by using a single device that is physically or logically coupled, or may be realized by using two or more physically or logically separated devices that are connected directly or indirectly (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining the single device or the multiple devices with software.

[0090] For example, a base station, a terminal, a network node, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 16 is a diagram illustrating an example of the hardware configuration of a base station and a terminal according to an embodiment of the present disclosure. The above-described base station 100 and terminal 200 may be physically 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.

[0091] In the present disclosure, the term "apparatus" may be interchangeable with any two terms selected from a set of terms such as circuit, device, unit, module, chip, means, etc. The hardware configurations of base station 100 and terminal 200 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0092] Each function in the base station 100 and the terminal 200 is realized by loading predetermined software (programs) onto hardware such as the processor 1001, memory 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls the reading, writing, or both reading and writing of data in the memory 1002 and storage 1003.

[0093] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control unit, an arithmetic unit, registers, etc. Although only one processor 1001 is shown in the figure, there may be multiple processors.

[0094] The processor 1001 also reads programs (program codes), software modules, data, etc. from the storage 1003, the communication device 1004, or both the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes in accordance with the programs. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 401 of the terminal 200 may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and similar implementations may be made for other functional blocks. While the above-described various processes have been described as being executed by one processor 1001, they may also 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, or may be provided to the computer via the communication device 1004, for example.

[0095] The present disclosure also provides a computer program product including a computer program, which may implement the steps of the methods described in the above embodiments when the computer program is executed by a computer (e.g., the processor 1001).

[0096] The memory 1002 is a computer-readable recording medium and may be configured, for example, as a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), or a combination of at least two of these. The memory 1002 may also be called a register, a cache, a main memory (primary storage device), or the like. The memory 1002 can store executable programs (program codes), software modules, and the like for implementing a wireless communication method according to an embodiment of the present disclosure.

[0097] Storage 1003 is a computer-readable recording medium, and may be, for example, an optical disk 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 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, or a combination of at least two of these. Storage 1003 may also be referred to as an auxiliary storage device. The above-mentioned storage medium may be, for example, memory 1002, storage 1003, or a database, server, or other appropriate medium including both memory 1002 and storage 1003.

[0098] The communication device 1004 is hardware (transmitting / receiving device) for communicating between computers via a wired network, a wireless network, or both wired and wireless networks, and is also referred to as a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, or a combination of at least two of these.

[0099] The input device 1005 is an input device that accepts input from the outside (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, or a combination of at least two of these). The output device 1006 is an output device that outputs to the outside (for example, a display, a speaker, an LED lamp, or a combination of at least two of these). The input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

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

[0101] Furthermore, base station 100 and terminal 200 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), a graphics processing unit (GPU), a neural processing unit (NPU), or a combination of at least two of these, and some or all of the functional blocks may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

[0102] <Information notification, signaling> 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) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB))), other signals, or a combination of at least two of these. Note that the physical layer signaling may be referred to as Layer 1 (L1) control information. The MAC signaling may be referred to as a MAC Control Element (CE) or a MAC Protocol Data Unit (PDU), for example. Furthermore, the RRC signaling may be referred to as an RRC message or an information element (IE) in the RRC message. The RRC message may be, for example, a message used for controlling an RRC connection (for example, setup, reconfiguration, establishment, reestablishment, release, or resume), mobility, a measurement report, or notification of a terminal's capabilities, or may be an information element within the message. Furthermore, notification of information may be explicit or implicit. Note that explicit notification of certain information means notification of the certain information itself, and implicit notification of certain information may mean notification of information other than the certain information, or may mean that the certain information is considered to have been notified when a certain condition is satisfied.Furthermore, notification of information may include not only notification between the same layers of different devices (e.g., between a lower layer or an upper layer of the base station 10 and the terminal 20) but also notification between different layers in the same or different devices (e.g., between a lower layer and an upper layer in the base station 10 or the terminal 20). Furthermore, notification of information from one device to another device may be performed via one or more devices. Regarding any information (e.g., a variable, a constant, a parameter, a setting) described in the present disclosure, even if not specifically stated in the above embodiments, information indicating / specifying (or related to) the any information (value) may be notified from any first device (e.g., a terminal / base station) to any second device (e.g., a base station / terminal).

[0103] <Applicable systems> Each aspect / embodiment described in the present disclosure may be implemented using any of a wide variety of standards, including Long Term Evolution (LTE), LTE-Advanced (LTE-A), International Mobile Telecommunications-Advanced (IMT-Advanced), 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 5G-A (5G-Advanced), 6G (6th generation mobile communication system), xG (xth generation mobile communication system (x is, for example, an integer or a decimal), Future Radio Access (FRA), New Radio (NR), New radio access (NX), Future generation radio access (FX), Open Radio Access Network (O-RAN), Wideband Code Division Multiple Access (W-CDMA, registered trademark), Global System for Mobile communications (GSM, registered trademark), CDMA2000, Ultra Mobile Broadband (UMB), and Institute of Electrical and Electronics Engineers (IEEE). 802.11, IEEE802.11x (where x is any character string such as b, a, g, n, ac, ax, be, or bn, and when x=n it is called Wi-Fi4, when x=ac it is called Wi-Fi5, when x=ax it is called Wi-Fi6 or Wi-Fi6E, when x=be it is Wi-Fi7, and when x=bn it is called Wi-Fi8, etc. Wi-Fi is a registered trademark.), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), network virtualization technology (e.g., NFV (Network Function Virtualization), SFC (Service Function Chaining), SDN (Software Defined Networking)), or LPWA (Low Power Wide Area). Furthermore, each aspect / embodiment described in the present disclosure may be applied to a system based on a combination of at least two of these technologies. Furthermore, "based on" naturally refers not only to a system that uses the technology, but also to a system that uses an extension or modification of the technology.

[0104] <Processing procedures, etc.> 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.

[0105] <Base station operation> In the present disclosure, a specific operation described as being performed by a base station may be performed by its upper node or by some of its upper nodes (e.g., CU, RU, or DU, etc.) in some cases. It is clear that various operations performed for communication with a terminal in a RAN or core network may be performed by at least some of the base station and other network nodes other than the base station. The other network node may be one node or a combination of multiple nodes. The network node is, for example, a node provided in various core networks such as EPC (Evolved Packet Core) and 5GC (5G Core Network), and provides one or more network functions (NF: Network Functions), but is not limited to this.

[0106] Furthermore, in the present disclosure, the operation of "a terminal receives information from a base station" accompanies the operation of "the base station transmits the information to the terminal," "the base station generates the information," or both. Similarly, the operation of "a terminal transmits information to a base station" accompanies the operation of "the base station receives the information from the terminal." Furthermore, the operation of "a terminal is configured to ..." or "configure UE to ..." may include the operation of "a base station transmits configuration information regarding the configuration of the terminal" and the operation of "a terminal configures a predetermined operation based on the configuration information."

[0107] <Input / output direction> Information, etc. (see the section on information and signals) can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may also be input / output via multiple network nodes.

[0108] <Handling of input and output information> Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be sent to another device.

[0109] <Judgment method> 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).

[0110] <Variations of form, etc.> Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched depending on the implementation.

[0111] The present disclosure has been described above, but it is for illustrative purposes only, and the present invention is not limited to the aspects / embodiments described in the present disclosure. The present disclosure can be implemented in modified and altered forms without departing from the spirit of the invention. The present disclosure and its modifications and alterations are included in the scope of the present invention and its equivalents.

[0112] <Software> 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.

[0113] 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.

[0114] <Information, Signals> 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.

[0115] 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.

[0116] <System, Network> As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0117] <Parameter, channel name> 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.

[0118] 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.

[0119] <Base station> In the present disclosure, any two terms selected from a set of terms such as "base station (BS)", "radio base station", "fixed station (fixed station)", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point (AP)", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "radio unit (RU)", "remote unit (RU)", "control unit (CU)", "distributed unit (DU)", "remote radio head (RRH)", "node", "gateway", "terrestrial base station", "stratospheric base station", "unmanned aerial vehicle", "high altitude platform station (HAPS)", "airborne platform", "panel", "cell", "radio access network (RAN)", and "network" may be used interchangeably. Each cell accommodated by a base station may be referred to by terms such as a macro cell, a small cell, a femto cell, a pico cell, a serving cell, or a super cell. In the present disclosure, any two terms selected from a set of terms such as "cell," "sector," "cell group," "carrier," "component carrier," "cluster," "bandwidth part (BWP)," and "carrier bandwidth" may be used interchangeably.

[0120] A base station can accommodate one or more (e.g., three) cells. 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., an indoor small base station (RRH)). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within that coverage.

[0121] 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.

[0122] <terminal> In the present disclosure, any two terms selected from the set of terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE)", "Device", "Module" and "Terminal" may be used interchangeably.

[0123] A terminal may be referred to 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, router (e.g., home router, mobile router, etc.), TCU (Telematics Control Unit), or some other suitable terminology.

[0124] <Base station / terminal> The base station and the terminal may each be composed of one or more devices. The devices constituting at least a portion of the base station and the terminal may be called a transmitting device, a receiving device, a communication device, etc. Note that the devices constituting at least a portion of the base station and the terminal may be, for example, an object itself, such as a vehicle, a transport vehicle, an automobile, a motorcycle, a bicycle, a connected car, an excavator, a bulldozer, a wheel loader, a dump truck, a forklift, a train, a bus, a handcar, a rickshaw, a ship and other watercraft, an airplane, a rocket, an unmanned aerial vehicle, a stratospheric base station (e.g., a High Altitude Platform Station (HAPS)), an artificial satellite (e.g., a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a Geostationary Earth Orbit (GEO) satellite), a drone (registered trademark), a multicopter, a quadcopter, a balloon, or an Internet of Things (IoT) device (e.g., a smart meter, a sensor), or may include, but are not limited to, an object or device mounted on the object. Furthermore, the object may be a moving object (hereinafter referred to as a "moving object"; this does not exclude the case where the moving object is in a stationary state where it is not moving), or may be a fixedly positioned object (hereinafter referred to as a "non-moving object").

[0125] Furthermore, a base station in the present disclosure may be read as a terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a terminal is replaced with communication between multiple terminals (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)) or communication of a non-terrestrial network (NTN). In this case, the terminal 20 may be configured to have at least some of the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "sidelink") or terms corresponding to NTN (for example, feeder link or service link). For example, an uplink channel or a downlink channel may be read as a sidelink channel.

[0126] The present disclosure is also applicable to cases where at least some of the devices constituting the base station and the terminal operate outside the earth (for example, in the atmosphere or outer space).

[0127] In addition, the term "terminal" in the present disclosure may be read as "base station." In this case, the base station 100 may be configured to have the functions of the terminal 200 described above.

[0128] <Terminology and interpretation> 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.

[0129] 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.

[0130] <Reference signal> The reference signal may be abbreviated as RS (Reference Signal), and may also be called a pilot or pilot signal depending on the applicable standard.

[0131] <The meaning of "based on"> 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."

[0132] <"First", "Second"> 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 or that the first element must in some way precede the second element.

[0133] <Means> In the configuration of each of the above devices, the "means" may be replaced with "section", "circuit", "device", etc.

[0134] <Open format> In the present disclosure, when the terms "include", "including" and their variants are used, these terms are intended to be inclusive, similar to the term "comprising". Further, the term "or" used in the present disclosure is intended not to be an exclusive disjunction.

[0135] <Time units such as TTI, frequency units such as RB, radio frame configuration> The radio resources can be defined, for example, by a combination of units of resources in one or more of the time domain, frequency domain, spatial domain, code domain, and power domain, etc.

[0136] For example, resources in the time domain may be defined by one or more time units. The one or more time units may include, but are not limited to, a radio frame, a subframe, a slot, a symbol, a transmission time interval (TTI), or a combination of at least two of these. The time unit may be a fixed-length time unit independent of numerology, a variable-length time unit dependent on numerology, or both. Examples of fixed-length time units include, but are not limited to, a subframe consisting of one or more slots and a radio frame including multiple subframes. Examples of variable-length time units include, but are not limited to, a symbol and a slot including a fixed number of symbols. A certain time unit may be divided into shorter time units. Examples of shorter time units include, but are not limited to, a minislot consisting of fewer symbols than the number of symbols constituting a slot. The above-described time units may include, for example, time units used as units for scheduling, link adaptation, etc. Furthermore, any time unit in the present disclosure may be read as another time unit.

[0137] Numerology is a parameter that defines the physical layer structure, and may be a parameter based on at least one of subcarrier spacing (SCS), symbol length, cyclic prefix length, and sampling time, for example.

[0138] Resources in the frequency domain may be defined, for example, by one or more frequency units. The one or more frequency units may include, for example, subcarriers, resource blocks (RBs), bandwidth parts (BWPs), carrier bandwidths, or a combination of at least two of these, but the terminology of the frequency units is not limited to these. The number of subcarriers included in a frequency unit may be a fixed number regardless of numerology, or may be a variable number that changes depending on numerology. For example, an RB is composed of a predetermined number of consecutive subcarriers in the frequency domain, and the number of subcarriers included in the RB may be the same regardless of numerology, for example, 12, but is not limited to this. A BWP may be composed of, for example, one or more consecutive RBs within a certain carrier bandwidth, but is not limited to this. One or more BWPs may be configured within one carrier for terminal 20, and at least one of the BWPs may be activated. Any frequency unit in the present disclosure may be interchangeable with another frequency unit.

[0139] Furthermore, resources in both the time domain and the frequency domain may be defined by one or more time / frequency units each consisting of a time unit and a frequency unit, such as, but not limited to, a resource element (RE) consisting of one symbol and one subcarrier, a resource element group (REG) consisting of a predetermined number of REs, or a control resource set (CORESET) consisting of a predetermined number of symbols and a predetermined number of RBs.

[0140] Furthermore, resources in the spatial domain may be defined, for example, by one or more spatial units, including, but not limited to, a beam, a layer of MIMO (Multi-Input Multi-Output), an antenna port, or a combination of at least two of these.

[0141] Furthermore, the resources in the code domain may be defined by one or more code units, such as, but not limited to, a cyclic shift (CS), an orthogonal cover code (OCC), or a combination thereof.

[0142] <Maximum transmission power> The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0143] <Article> 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.

[0144] <"Different"> 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." [Industrial Applicability]

[0145] One aspect of the present disclosure is useful in wireless communication systems. [Explanation of symbols]

[0146] 10. Wireless communication systems 20 NG-RAN 100 base stations (gNB) 200 User Equipment (UE) 101,202 Transmitter 102,201 Receiver 103,203 Control unit

Claims

1. a communication unit that communicates using a plurality of carriers with different subcarrier intervals; a control unit that simultaneously schedules communication channels of the plurality of carriers based on a single value included in a downlink control signal; Equipped with the control unit determines, from among the plurality of carriers, a carrier to which an offset between the downlink control signal and the communication channel is to be applied. Terminal.

2. The control unit determines a carrier set by a network as a carrier to which the offset is applied. The terminal according to claim 1 .

3. The control unit determines a carrier having the smallest or largest subcarrier spacing among the plurality of carriers as a carrier to which the offset is applied. The terminal according to claim 1 .

4. The control unit determines a carrier having the smallest or largest subcarrier spacing among the cells that are actually scheduled simultaneously as a carrier to which the offset is applied. The terminal according to claim 1 .

5. The control unit determines the earliest or latest scheduled carrier among the cells that are actually simultaneously scheduled as the carrier to which the offset is applied. The terminal according to claim 1 .

6. The device is Communicating using multiple carriers with different subcarrier spacing, co-scheduling communication channels of the plurality of carriers based on a single value included in a downlink control signal; determining a carrier to which the offset between the downlink control signal and the communication channel is to be applied from among the plurality of carriers; Communication method.

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