Terminal and communication method

Abstract

This terminal comprises a control unit for setting a cell group or a physical uplink control channel (PUCCH) group on the basis of a specific constraint in a plurality of frequency ranges, and a communication unit for executing communication by applying the set cell group or the PUCCH group. The plurality of frequency ranges include at least a first frequency range, a second frequency range having a frequency higher than the first frequency range, and a third frequency range having a frequency higher than the first frequency range and lower than the second frequency range.

Description

Terminal and communication method

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

[0002] The 3GPP (registered trademark) (3rd Generation Partnership Project) is currently studying a wireless communication method called 5G or NR (New Radio) (hereinafter, this wireless communication method will be referred to as "NR") in order to achieve a larger system capacity, a higher data transmission speed, and a lower latency in wireless sections. In 5G, various wireless technologies and network architectures are being studied to meet the requirements of achieving a throughput of 10 Gbps or more while reducing the latency in wireless sections to 1 ms or less (for example, Non-Patent Document 1 and Non-Patent Document 2).

[0003] Furthermore, various requirements are being considered for the next generation, 6G, such as ultra broadband communication, mission critical communication, ultra massive connection, universal coverage, intelligent connection, and ubiquitous sensing.

[0004] To achieve this requirement, the new concept aims to be extensible (e.g., to make it more future-proof), customizable (e.g., to make it easier to operate), and sustainable (e.g., to reduce costs and have a more robust structure).

[0005] 3GPP TS 38.300 V17.5.0 (2023-06)3GPP TS 38.401 V17.5.0 (2023-06)3GPP TS 38.306 V17.5.0 (2023-06)

[0006] In 5G, FR1 and FR2 are defined as frequency bands (FR). In the next generation, 6G, it is expected that even more frequency bands will be used. Here, when new frequency bands are defined, it is necessary to specify how to configure cell groups or PUCCH groups.

[0007] The present invention has been made in view of the above points, and has as its object to define a group configuration suitable for a frequency band in a wireless communication system.

[0008] According to the disclosed technology, there is provided a terminal including: a control unit that sets a cell group or a PUCCH (Physical Uplink Control Channel) group based on specific constraints in a plurality of frequency ranges; and a communication unit that performs communication by applying the set cell group or the PUCCH group, wherein the plurality of frequency ranges include at least a first frequency range, a second frequency range having a higher frequency than the first frequency range, and a third frequency range having a higher frequency than the first frequency range and lower than the second frequency range.

[0009] According to the disclosed technology, it is possible to define a group configuration suitable for a frequency band in a wireless communication system.

[0010] FIG. 1 is a diagram illustrating an example of the configuration of a wireless communication system in an embodiment of the present invention. FIG. 2 is a diagram for explaining an example (1) of a frequency band in an embodiment of the present invention. FIG. 3 is a flowchart for explaining an example of setting a group in an embodiment of the present invention. FIG. 4 is a diagram for explaining an example (2) of a frequency band in an embodiment of the present invention. FIG. 5 is a sequence diagram for explaining an example of a UE capability report in an embodiment of the present invention. FIG. 6 is a sequence diagram for explaining an example of an operation related to group setting in an embodiment of the present invention. FIG. 7 is a diagram illustrating an example of the functional configuration of a base station 10 in an embodiment of the present invention. FIG. 8 is a diagram illustrating an example of the functional configuration of a terminal 20 in an embodiment of the present invention. FIG. 9 is a diagram illustrating an example of the hardware configuration of a base station 10 or a terminal 20 in an embodiment of the present invention. FIG. 10 is a diagram illustrating

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0012] In the operation of the wireless communication system according to the embodiment of the present invention, existing technology is used as appropriate. However, the existing technology is, for example, the existing LTE, but is not limited to the existing LTE. Furthermore, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and systems subsequent to LTE-Advanced (e.g., NR), unless otherwise specified.

[0013] In addition, 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) used in existing LTE are used. This is for convenience of description, and similar signals, functions, etc. may be called by other names. In addition, the above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even if a signal is used in NR, it is not necessarily stated as "NR-".

[0014] Furthermore, in the embodiment of the present invention, the duplex method may be a time division duplex (TDD) method, a frequency division duplex (FDD) method, or another method (for example, flexible duplex, etc.).

[0015] Furthermore, in the embodiments of the present invention, "configuring" radio parameters etc. may mean that predetermined values ​​are pre-configured, or that radio parameters notified from the base station 10 or the terminal 20 are set.

[0016] Fig. 1 is a diagram showing an example of the configuration of a wireless communication system according to an embodiment of the present invention. As shown in Fig. 1, the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20. Although Fig. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.

[0017] The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. The physical resources of a wireless signal are defined in the time domain and the frequency domain. The time domain may be defined by the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. The base station 10 transmits a synchronization signal and system information to the terminal 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The system information is, for example, transmitted via NR-PBCH and is also referred to as broadcast information. The synchronization signal and system information may also be referred to as SSB (SS / PBCH block). As shown in FIG. 1 , the base station 10 transmits control signals or data to the terminal 20 via DL (Downlink) and receives control signals or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming. Furthermore, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Furthermore, both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).

[0018] The terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or an M2M (Machine-to-Machine) communication module. As shown in Fig. 1, the terminal 20 receives control signals or data from the base station 10 via DL and transmits control signals or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 also receives various reference signals transmitted from the base station 10 and measures propagation path quality based on the reception results of the reference signals.

[0019] Furthermore, various requirements are being considered for the next generation, 6G, such as ultra broadband communication, mission critical communication, ultra massive connection, universal coverage, intelligent connection, and ubiquitous sensing.

[0020] To achieve this requirement, the new concept aims to be extensible (e.g., to make it more future-proof), customizable (e.g., to make it easier to operate), and sustainable (e.g., to reduce costs and have a more robust structure).

[0021] 2 is a diagram illustrating an example (1) of frequency bands according to an embodiment of the present invention. 5G defines usable frequency ranges (FR) as FR1, which ranges from 410 MHz to 7.125 GHz, and FR2, which ranges from 2.425 GHz to 71 GHz. The term "frequency band" may be interchanged with the term "frequency range."

[0022] Furthermore, as shown in Figure 2, 6G is expected to use the frequency band between FR1 and FR2, i.e., FR3, which ranges from 7.125 GHz to 24 GHz. By using a wider bandwidth than FR1, FR3 is expected to achieve even higher speeds and larger capacities. In addition, since the radio wave characteristics are closer to FR1 than FR2, improved communication stability and coverage are expected.

[0023] In addition, NR allows capability reporting based on FR for cell groups and PUCCH groups.

[0024] A cell group includes one MAC entity, includes a set of logical channels associated with an RLC entity, and is composed of a primary cell (SpCell) and one or more secondary cells (SCells). For example, in LTE-NR dual connectivity, the master cell group is composed of LTE cells, and the secondary cell group is composed of NR cells.

[0025] A PUCCH group is a group that includes a cell (SpCell or PUCCH-SCell) that can transmit PUCCH and one or more cells that are associated with that cell to transmit HARQ-ACK.

[0026] It is not easy to include an FR1 cell and an FR2 cell in the same cell group or PUCCH group due to factors such as baseband processing and differences in RF devices.

[0027] For example, the following UE capability parameters 1) to 3) are defined as capability reports related to cell groups (see Non-Patent Document 3).

[0028] 1) ca-ParametersNR (NG) Includes parameters for EN-DC / NE-DC and / or NR-CA band combinations.

[0029] 2) ca-ParametersNRDC Indicates whether NR-DC is supported for the band combination. Contains parameters for NR band combinations applicable to the MCG (Master Cell Group) and SCG (Secondary Cell Group). If the band combination includes both FR1 and FR2 bands, a UE that indicates support for NR-DC must support synchronous NR-DC configuration when all serving cells of the MCG are FR1 and all serving cells of the SCG are FR2.

[0030] 3) supportedCellGrouping-r16: Indicates which NR-DC cell groupings the UE supports for the NR-DC band combination. That is, it indicates the mapping of serving cells to MCG and SCG and the operation mode (synchronous or asynchronous) requested by the network via requestedCellGrouping-r16. Regardless of the indicated supportedCellGrouping-r16, the UE must support NR-DC for all FR1 serving cells included in the MCG and all FR2 serving cells included in the SCG indicated by ca-ParametersNRDC.

[0031] For example, the following UE capability parameters 1) to 3) are defined as capability reports related to PUCCH groups (see Non-Patent Document 3).

[0032] 1) twoPUCCH-Grp-ConfigurationsList-r16 Indicates whether one or more of the primary PUCCH group configuration and secondary PUCCH group configuration sets are supported for the band combination. It may include supported configurations of carrier types that can be mapped to any PUCCH group for the primary PUCCH group and secondary PUCCH group for an NR-CA band combination that includes three or more bands. It may also include carrier types that can be configured for PUCCH transmission for the primary PUCCH group and secondary PUCCH group for an NR-CA band combination that includes three or more bands. The carrier types may be FR1-NonShared TDD, FR1-Shared TDD, FR1-NonShared FDD, or FR2.

[0033] 2) maxUpTo3Diff-NumerologiesConfigSinglePUCCH-grp-r16 (NG) Indicates support for up to three different numerologies in the same PUCCH group by notifying one or more NR carrier types that can transmit PUCCH for the NR part of EN-DC, NE-DC, and NR-CA. Two NR PUCCH groups are not configured. The NR carrier type may be one of {FR1 licensed TDD (fr1-NonSharedTDD-r16), FR1 unlicensed TDD (fr1-SharedTDD-r16), FR1 licensed FDD (fr1-NonSharedFDD-r16), FR2 (fr2-r16)}.

[0034] 3) maxUpTo3Diff-NumerologiesConfigSinglePUCCH-grp-r16 (NG) Indicates support for up to four different numerologies in the same PUCCH group by notifying one or more NR carrier types that can transmit PUCCH for the NR part of EN-DC, NE-DC, and NR-CA. Two NR PUCCH groups are not configured. The NR carrier type may be one of {FR1 licensed TDD (fr1-NonSharedTDD-r16), FR1 unlicensed TDD (fr1-SharedTDD-r16), FR1 licensed FDD (fr1-NonSharedFDD-r16), FR2 (fr2-r16)}.

[0035] Here, if FR3 is defined in 6G-RAT in addition to FR1 / FR2, it is necessary to determine the provisions related to cell groups and / or PUCCH groups and the mechanism for capability reporting.

[0036] Therefore, the following specific operations related to cell groups and / or PUCCH groups when using frequency bands included in FR1 and / or FR2 and frequency bands included in FR3 may be performed.

[0037] Operation 1) UE operation corresponding to restrictions related to a cell group and / or a PUCCH group in the specifications. Operation 2) UE operation corresponding to a UE capability report related to a cell group and / or a PUCCH group and settings from the base station 10 based on the report. Operation 3) Common signaling related to a cell group and / or a PUCCH group and UE operation corresponding to the signaling.

[0038] In the following description, the term "group" may be replaced with "cell group and / or PUCCH group."

[0039] The above specific operations are not limited to cell groups and / or PUCCH groups, but may also be applied to groups defined to collectively perform some operations on frequency-direction elements (e.g., cells, carriers).

[0040] The operations 1), 2) and 3) may be applied in combination.

[0041] Note that using frequency bands simultaneously may mean CA or DC, but is not limited to these.

[0042] Note that "determining" may also mean that the network configures the corresponding parameters in the UE, and the UE follows the configuration.

[0043] In addition, FR3 cells may be distinguished by TDD or FDD.

[0044] Hereinafter, operation 1) UE operation corresponding to restrictions on cell groups and / or PUCCH groups in the specifications will be described in detail.

[0045] 3 is a flowchart illustrating an example of group setting according to an embodiment of the present invention. In step S11, it is assumed that the terminal 20 is set to a group related to FR1, FR2, and / or FR3 under certain constraints. In step S12, the terminal 20 performs communication by applying the set group.

[0046] The groups related to FR1, FR2, and / or FR3 may be set by at least one of the following methods A) to F). Note that Method A) to F) may be replaced with Constraint A) to Constraint F).

[0047] Method A) Groups are set so that a group containing FR3 can contain only either FR1 or FR2. For example, group 1 may contain FR1 and FR3, and group 2 may contain FR2. Alternatively, group 1 may contain FR1, and group 2 may contain FR2 and FR3.

[0048] Method B) FIG. 4 is a diagram illustrating an example (2) of frequency bands according to an embodiment of the present invention. As shown in FIG. 4, FR3 is divided into FR3-a and FR3-b, and groups are set so that FR3-a and FR1 can be included in the same group, and FR3-b and FR2 can be included in the same group. For example, group 1 may include FR1 and FR3-a, and group 2 may include FR2 and FR3-b. A group of FR3-a and FR2, and a group of FR3-b and FR1 are not assumed. The division position of FR3-a and FR3-b may be defined in the specifications, may be set in the SIB, RRC parameters, and / or MAC, etc., may be determined based on UE capabilities, may be determined based on whether the maximum transmit power is determined for each frequency band collectively or independently, or may be determined based on whether the numerology that can be set is the same or not.

[0049] Method C) Groups are set so that frequencies or frequency bands for which the same numerology is set or can be set can be included in the same group. Frequency bands for which the same numerology is set or can be set may not be included in different groups. Frequency bands for which different numerologies are set or can be set may not be included in the same group. Frequency bands for which different numerologies are set or can be set may be included in different groups.

[0050] Method D) Groups are set such that frequencies or frequency bands for which maximum transmission power is determined collectively can be included in the same group. Frequencies or frequency bands for which maximum transmission power is determined collectively may not be included in different groups. Frequencies or frequency bands for which maximum transmission power is not determined collectively may not be included in the same group. Frequencies or frequency bands for which maximum transmission power is not determined collectively may be included in different groups.

[0051] Method E) Applying different restrictions based on simultaneously used frequency bands. When the simultaneously used frequency bands are FR1 and FR3, any of the following may be used: Group 1 includes FR1 and FR3-a and Group 2 includes FR3-b; Group 1 includes FR1 and Group 2 includes FR3; or Groups 1 and FR3 may be used. When the simultaneously used frequency bands are FR2 and FR3, any of the following may be used: Group 1 includes FR3-a and Group 2 includes FR3-b and FR2; Group 1 includes FR3 and Group 2 includes FR2; or Groups 1 and FR3 may be used. When the simultaneously used frequency bands are FR1, FR2, and FR3, any of the following may be used: Group 1 includes FR1 and FR3 and Group 2 includes FR2; Group 1 includes FR1 and Group 2 includes FR3 and FR2; or Group 1 includes FR1 and FR3-a and Group 2 includes FR3-b and FR2.

[0052] Method F) Assume that any configuration can be set for the groups FR1, FR2, and / or FR3. For example, a group may include FR1, FR2, and FR3, or group 1 may include FR1, group 2 may include FR3, and group 3 may include FR2.

[0053] When using frequency bands included in FR1 and / or FR2 and frequency bands included in FR3, the number of groups may be a maximum of two, or may be a maximum of three or more.

[0054] By limiting the specifications to groupings that are actually used through the above-mentioned operation 1), it is possible to simplify the specifications and the configuration of the device.

[0055] Hereinafter, operation 2) UE capability reporting related to a cell group and / or a PUCCH group and UE operations corresponding to settings from the base station 10 based on the report will be described in detail.

[0056] 5 is a sequence diagram illustrating an example of a UE capability report according to an embodiment of the present invention. In step S21, the terminal 20 transmits a UE capability report related to a group to the base station 10. In step S22, the base station 10 transmits a setting related to the group and / or a setting related to multiple frequency usage to the terminal 20 based on the UE capability report. The terminal 20 may perform communication using the setting.

[0057] UE capabilities may differ based on the frequency bands they simultaneously use.

[0058] The terminal 20 may report to the base station 10 which groups it supports as a UE capability report, as shown in one or more of 1) to 4) below.

[0059] 1) The terminal 20 may report to the base station 10 whether or not it supports some or all of the grouping conditions of the above methods A), B), C), D), E), and F).

[0060] 2) The terminal 20 may report to the base station 10 whether or not it supports any of the group of methods A), B), C), D), E), and F).

[0061] 3) The terminal 20 may report to the base station 10 whether or not it supports groups that exceed the constraints of some or all of the above methods A), B), C), D), E), and F).

[0062] 4) The terminal 20 may report to the base station 10 which configurations it supports for the groups related to FR1, FR2 and / or FR3.

[0063] Regarding the UE capability reports of 1), 2), 3), and / or 4), the terminal 20 may report to the base station 10 for each band combination, or may report to the base station 10 for each UE. Furthermore, the terminal 20 may transmit to the base station 10 the UE capability reports of 1), 2), 3), and / or 4) for only the band combinations notified by the base station 10.

[0064] The base station 10 may perform group-related configuration and / or multi-frequency usage configuration based on the UE capability report.

[0065] The above-mentioned operation 2) enables optimal UE implementation according to the UE type.

[0066] Below, operation 3) common signaling related to cell groups and / or PUCCH groups and UE operations corresponding to this signaling will be described in detail.

[0067] The base station 10 may inform the terminal 20 via common signaling (for example, SIB) which group is applicable.

[0068] 6 is a sequence diagram illustrating an example of an operation related to group setting in an embodiment of the present invention. In step S31, the base station 10 transmits information indicating which group is applicable to the terminal 20. In step S32, the terminal 20 executes a predetermined operation based on the information. The information indicating which group is applicable may be one or more of 1) to 3) shown below.

[0069] 1) The base station 10 may notify the terminal 20 whether or not some or all of the grouping conditions of the above methods A), B), C), D), E), and F) are applicable.

[0070] 2) The base station 10 may notify the terminal 20 whether any of a part or all of the group of the above methods A), B), C), D), E), and F) is applicable.

[0071] 3) The base station 10 may notify the terminal 20 whether or not a group exceeding some or all of the constraints of the above methods A), B), C), D), E), and F) is applicable.

[0072] 4) The base station 10 may notify the terminal 20 which configuration is applicable to the groups related to FR1, FR2 and / or FR3.

[0073] The terminal 20 that has received the notification 1), 2), 3), and / or 4) above may execute the predetermined operations described below in a) to c).

[0074] a) Execute the UE capability report of the above operation 2) corresponding to the notification, b) If the band combination and UE capability of the own device are applicable to the notified applicable group, connect to (attempt to connect to) a cell included in the notified applicable group, c) If the band combination and UE capability of the own device are not applicable to the notified applicable group, it may determine that the cell included in the notified applicable group is a barred cell, or may search for other cells.

[0075] As noted above, connection and other communication actions may be determined based on the agreement between the UE and the BS on support for the group.

[0076] The above operation 3) allows connection and other communication operations to be determined based on the matching status between the UE and the BS of the support for the group.

[0077] According to the above-described embodiment, the terminal 20 can determine an appropriate group configuration in an operating environment where FR3 is introduced and apply it to communications using FR3. Furthermore, by limiting the specifications to groupings that are actually used, specifications and device configurations can be simplified. Furthermore, optimal UE implementation according to UE type is possible. Furthermore, connection and other communication operations may be determined based on the matching status of group support between the UE and the BS.

[0078] That is, in a wireless communication system, it is possible to define a group configuration suitable for a frequency band.

[0079] (Device Configuration) Next, a functional configuration example of the base station 10 and the terminal 20 that execute the processes and operations described above will be described. The base station 10 and the terminal 20 include functions for implementing the above-described embodiments. However, the base station 10 and the terminal 20 may each include only a part of the functions of the embodiments.

[0080] <Base Station 10> Figure 7 is a diagram showing an example of the functional configuration of the base station 10 according to an embodiment of the present invention. As shown in Figure 7, 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 7 is merely an example. The names of the functional divisions and functional units may be any as long as they can perform the operations according to the embodiment of the present invention.

[0081] The transmitter 110 has a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. The transmitter 110 also transmits inter-network node messages to other network nodes. The receiver 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of higher layers from the received signals. The transmitter 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, etc. to the terminal 20. The receiver 120 also receives inter-network node messages from other network nodes.

[0082] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20. The content of the setting information is, for example, information relating to group settings.

[0083] As described in the embodiment, the control unit 140 controls the setting of groups. The control unit 140 also executes scheduling. The signal transmission-related functional unit in the control unit 140 may be included in the transmitting unit 110, and the signal reception-related functional unit in the control unit 140 may be included in the receiving unit 120.

[0084] <Terminal 20> Fig. 8 is a diagram showing an example of the functional configuration of terminal 20 in an embodiment of the present invention. As shown in Fig. 8, 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 Fig. 8 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations related to the embodiment of the present invention.

[0085] The transmitter 210 creates a transmission signal from transmission data and transmits the transmission signal wirelessly. The receiver 220 wirelessly receives various signals and acquires higher layer signals from the received physical layer signals. The receiver 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, and the like transmitted from the base station 10. For example, the transmitter 210 transmits a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH (Physical Sidelink Discovery Channel), a PSBCH (Physical Sidelink Broadcast Channel), and the like to another terminal 20 as D2D communication, and the receiver 220 receives the PSCCH, PSSCH, PSDCH, or PSBCH, and the like, from the other terminal 20.

[0086] 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 setting information that is set in advance. The content of the setting information is, for example, information related to group settings.

[0087] As described in the embodiment, the control unit 240 controls the setting of groups. The function unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and the function unit related to signal reception in the control unit 240 may be included in the receiving unit 220.

[0088] (Hardware Configuration) The block diagrams (FIGS. 7 and 8) used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may also be realized by combining software with the single device or the multiple devices.

[0089] Functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0090] For example, the base station 10, the terminal 20, 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. 9 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The base station 10 and the terminal 20 described above 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.

[0091] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0092] Each function in the base station 10 and the terminal 20 is realized by loading specified software (programs) onto hardware such as the processor 1001, the memory device 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls at least one of reading and writing data in the memory device 1002 and the auxiliary memory device 1003.

[0093] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0094] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 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 140 of the base station 10 shown in FIG. 7 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. For example, the control unit 240 of the terminal 20 shown in FIG. 8 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. 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 also be transmitted from a network via a telecommunications line.

[0095] The storage device 1002 is a computer-readable recording medium and may be configured, for example, by at least one of a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), etc. The storage device 1002 may also be called a register, a cache, a main memory, etc. The storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.

[0096] The secondary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of 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 (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. The above-mentioned storage medium may be, for example, a database, a server, or other appropriate medium including at least one of the storage device 1002 and the secondary storage device 1003.

[0097] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, 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, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, a transmission / reception antenna, an amplifier unit, a transmission / reception unit, a transmission path interface, etc. may be realized by the communication device 1004. The transmission / reception unit may be implemented as a transmission unit and a reception unit that are physically or logically separated.

[0098] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0099] 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 may be configured using different buses between each device.

[0100] Furthermore, the base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0101] Fig. 10 shows an example configuration of a vehicle 2001. As shown in Fig. 10, the 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 the present disclosure may be applied to a communication device mounted on the vehicle 2001, and may be applied to the communication module 2013, for example.

[0102] The drive unit 2002 is configured, for example, by 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 operated by the user.

[0103] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0104] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a front or rear wheel rotation speed signal obtained by a rotation speed sensor 2022, a front or rear wheel air pressure signal obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0105] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various types of information, such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 2012 uses information acquired from external devices via the communication module 2013 or the like to provide various types of multimedia information and multimedia services to the occupants of the vehicle 2001. The information service unit 2012 may include input devices (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accept input from the outside, and may also include output devices (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) that output information to the outside.

[0106] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. In addition, the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0107] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided in the vehicle 2001.

[0108] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

[0109] The communication module 2013 may transmit at least one of signals from the above-mentioned various sensors 2021-2028 input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above-mentioned input.

[0110] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle-to-vehicle information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker 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 external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control 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 to 2029, etc. provided in the vehicle 2001.

[0111] (Summary of Embodiments) As described above, according to the embodiments of the present invention, there is provided a terminal including: a control unit that sets a cell group or a PUCCH (Physical Uplink Control Channel) group based on specific constraints in a plurality of frequency ranges; and a communication unit that performs communication by applying the set cell group or the PUCCH group, wherein the plurality of frequency ranges include at least a first frequency range, a second frequency range having a frequency higher than the first frequency range, and a third frequency range having a frequency higher than the first frequency range and lower than the second frequency range.

[0112] With the above configuration, the terminal 20 can determine an appropriate group configuration in an operating environment where FR3 is introduced and apply it to communications using FR3. Furthermore, by limiting the specifications to groupings that are actually used, the specifications and device configuration can be simplified. In other words, it is possible to specify a group configuration that is appropriate for the frequency band in a wireless communication system.

[0113] The control unit may include either the first frequency range or the second frequency range in the cell group or the PUCCH group including the third frequency range. With this configuration, the terminal 20 can determine an appropriate group configuration in an operational environment where FR3 is introduced and apply it to communications using FR3. Furthermore, by limiting the specifications to groupings that are actually used, it is possible to simplify the specifications and device configuration.

[0114] The control unit may divide the third frequency range into a fourth frequency range on the lower frequency side and a fifth frequency range on the higher frequency side, and set the cell group or the PUCCH group including the first frequency range and the fourth frequency range, and the cell group or the PUCCH group including the second frequency range and the fifth frequency range. With this configuration, the terminal 20 can determine an appropriate group configuration in an operation environment where FR3 is introduced and apply it to communications using FR3. Furthermore, by limiting the specifications to groupings that are actually used, it is possible to simplify the specifications and device configuration.

[0115] The control unit may set the frequency ranges, among the first frequency range, the second frequency range, and the third frequency range, which collectively determine the maximum transmission power, to the same cell group or the PUCCH group. With this configuration, the terminal 20 can determine an appropriate group configuration in an operational environment where FR3 is introduced and apply it to communications using FR3. Furthermore, by limiting the specifications to groupings that are actually used, the specifications and device configuration can be simplified.

[0116] The communication unit may report the configurable cell group or the PUCCH group to a base station. This configuration enables optimal UE implementation according to the UE type.

[0117] Furthermore, according to an embodiment of the present invention, there is provided a communication method in which a terminal executes a procedure of setting a cell group or a PUCCH (Physical Uplink Control Channel) group based on specific constraints in a plurality of frequency ranges, and a procedure of performing communication by applying the set cell group or the PUCCH group, wherein the plurality of frequency ranges include at least a first frequency range, a second frequency range having a frequency higher than the first frequency range, and a third frequency range having a frequency higher than the first frequency range and lower than the second frequency range.

[0118] With the above configuration, the terminal 20 can determine an appropriate group configuration in an operating environment where FR3 is introduced and apply it to communications using FR3. Furthermore, by limiting the specifications to groupings that are actually used, the specifications and device configuration can be simplified. In other words, it is possible to specify a group configuration that is appropriate for the frequency band in a wireless communication system.

[0119] (Supplementary Notes on the Embodiments) Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, 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; matters described in two or more items may be used in combination as needed, and matters described in one item may apply to matters described in another item (as long as there is no contradiction). Boundaries between functional units or processing units in functional block diagrams do not necessarily correspond to boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, the base station 10 and terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof. The software operated by the processor of the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor of the terminal 20 in accordance with an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.

[0120] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination thereof. Furthermore, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0121] Each aspect / embodiment described in the present disclosure may be applied to at least one of systems using LTE (Long Term Evolution), LTE-Advanced (LTE-A), 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 (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), or other suitable systems, and next-generation systems enhanced based on these. Furthermore, a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G, etc.) may also be applied.

[0122] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described herein may be rearranged 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.

[0123] In this specification, a specific operation described as being performed by the base station 10 may be performed by its upper node in some cases. In a network consisting of one or more network nodes having the base station 10, it is clear that various operations performed for communication with the terminal 20 may be performed by at least one of the base station 10 and another network node other than the base station 10 (such as, but not limited to, an MME or an S-GW). Although the above example illustrates a case where there is one other network node other than the base station 10, the other network node may be a combination of multiple other network nodes (such as an MME and an S-GW).

[0124] The information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0125] 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 transmitted to another device.

[0126] In the present disclosure, the determination may be made by a value represented by one bit (0 or 1), by a Boolean value (true or false), or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0127] 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.

[0128] 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.

[0129] 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.

[0130] Note that terms described 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.

[0131] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0132] 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.

[0133] 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.

[0134] In the present disclosure, terms such as "base station (BS)," "radio base station," "base station device," "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. A base station may also be referred to by terms such as a macrocell, a small cell, a femtocell, and a picocell.

[0135] 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 partitioned into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The terms "cell" or "sector" refer to part or all of the coverage area of ​​a base station and / or base station subsystem that provides communication services within that coverage.

[0136] 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.

[0137] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," and the like may be used interchangeably.

[0138] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0139] At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, etc. The mobile object refers to a movable object, and may move at any speed. Naturally, this also includes cases where the mobile object is stationary. Examples of the mobile object include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted thereon. The mobile object may also be a mobile object that moves autonomously based on an operational command. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0140] Furthermore, a base station in the present disclosure may be read as a user 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 user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0141] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station may be configured to have the functions of the user terminal described above.

[0142] 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.

[0143] 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.

[0144] The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0145] 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."

[0146] 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.

[0147] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0148] When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0149] A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed 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.

[0150] Numerology may be communication parameters applied to the transmission and / or reception of a signal or channel, such as subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, specific windowing operations performed by the transceiver in the time domain, etc.

[0151] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may be a time unit based on numerology.

[0152] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0153] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0154] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 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.

[0155] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units. Note that the definition of TTI is not limited to this.

[0156] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0157] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0158] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0159] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.

[0160] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.

[0161] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0162] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0163] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0164] A Bandwidth Part (BWP) (which may also be referred to as a partial bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0165] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for a UE within one carrier.

[0166] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0167] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples, and various changes may be made to the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc.

[0168] 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.

[0169] 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."

[0170] The aspects / embodiments described in this disclosure may be used alone, in combination, or switched depending on the implementation. Notification of predetermined information (e.g., notification that "X is true") is not limited to explicit notification, but may be implicit (e.g., not notifying the predetermined information).

[0171] Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

[0172] REFERENCE SIGNS LIST 10 Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Controller 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Controller 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

Claims

1. A terminal comprising: a control unit that sets a cell group or a PUCCH (Physical Uplink Control Channel) group based on specific constraints in a plurality of frequency ranges; and a communication unit that performs communication by applying the set cell group or the PUCCH group, wherein the plurality of frequency ranges include at least a first frequency range, a second frequency range having a higher frequency than the first frequency range, and a third frequency range having a higher frequency than the first frequency range and lower than the second frequency range.

2. The terminal according to claim 1, wherein the control unit includes either the first frequency range or the second frequency range in the cell group or the PUCCH group that includes the third frequency range.

3. The terminal according to claim 1, wherein the control unit divides the third frequency range into a fourth frequency range on the lower frequency side and a fifth frequency range on the higher frequency side, and sets the cell group or the PUCCH group including the first frequency range and the fourth frequency range, and the cell group or the PUCCH group including the second frequency range and the fifth frequency range.

4. The terminal according to claim 1, wherein the control unit sets the frequency ranges among the first frequency range, the second frequency range, and the third frequency range that collectively determine the maximum transmission power to the same cell group or PUCCH group.

5. The terminal according to claim 1, wherein the communication unit reports the configurable cell group or the PUCCH group to a base station.

6. A communication method in which a terminal executes the steps of: setting a cell group or a PUCCH (Physical Uplink Control Channel) group based on specific constraints in a plurality of frequency ranges; and performing communication by applying the set cell group or the PUCCH group, wherein the plurality of frequency ranges include at least a first frequency range, a second frequency range having a higher frequency than the first frequency range, and a third frequency range having a higher frequency than the first frequency range and lower than the second frequency range.

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