OA20068A - User equipment. - Google Patents

Abstract

Provided is user equipment comprising a capability information storage unit which stores capability information of the user equipment, and a capability information notification unit which notifies a base station of the capability information, wherein the capability information notification unit notifies the base station of, as the capability information, a separation distance between component carriers aggregation supported by the user equipment.

Description

TITLE OF INVENTION USER EQUIPMENT 5 TECHNICAL FIELD [0001] The présent disclosure relates to a radio communication system.

BACKGROUND ART [0002] Currently, in the Third Génération Partnership Project (3GPP), spécifications of a new radio communication system, which is called New Radio Access Technology (NR) System, hâve been developed, as a successor to the Long Term Evolution (LTE) system and the LTE-Advanced system.

[0003] In the development of the spécifications, a spécification of capability information (UE Capability) for the NR System is currently discussed. 20 For the NR system, use of a millimeter wave frequency band higher than the 24 GHz band has been studied, and, in order to use such a millimeter wave frequency band, combinations of component carriers provided with different séparations (frequency 25 séparations) are assumed to be used for intra-band non-contiguous carrier aggregation (CA).

Prior Art Document [Non-Patent Document] |

[0004] [Non-Patent Document 1] R2-1800022

[Non-Patent Document 2] R2-1712137 [Non-Patent Document 3] 3GPP TS 36.101

V14.5.0 (2017-09) i

SUMMARY OF THE INVENTION [PROBLEM TO BE SOLVED BY THE INVENTION] [0005] When the combinations of the component

carriers provided with the different séparations can be used for the carrier aggregation, user equipment is required to report, to a base station, which band combinations with corresponding séparations are 5 supported for the carrier aggregation, as capability information.

[0006] However, as for carrier aggregation band combinations corresponding to such different séparations, a scheme for reporting séparations as 10 capability information is currently not discussed.

[0007] There is a need for a scheme for efficiently reporting, as capability information, séparations between component carriers for carrier aggregation supported by user equipment. 15

[MEANS FOR SOLVING THE PROBLEM]

[0008] According to an aspect of the présent disclosure, there is provided user equipment including a capability information storage unit that 20 stores capability information of the user equipment;

and a capability information transmitting unit that reports the capability information to a base station, wherein the capability information transmitting unit reports, to the base station, a séparation between 25 component carriers for carrier aggregation supported by the user equipment, as the capability information.

[ADVANTAGE OF THE INVENTION]

[0009] Accor|ding to the présent disclosure, the | 30 séparations between the component carriers for carrier aggregation supported by the user equipment can be efficiently reported, as the capability j information. । |

BRIEF DESCRIPTION OF DRAWINGS

[0010] FIG. 1 is a schematic diagram illustrating a spécifie example of band combinations provided

with different séparations;

FIG. 2 is a schematic diagram illustrating a radio communication System according to an embodiment of the présent invention;

FIG. 3 is a block diagram illustrating a functional configuration of user equipment according to an embodiment of the présent invention;

FIG. 4 is a diagram illustrating carrier aggregation bandwidth classes including séparations —10 according to an embodiment of the présent invention;

FIG. 5A is a schematic diagram illustrating a spécifie example of a carrier aggregation bandwidth class according to an embodiment of the présent invention;

FIG. 5B is a schematic diagram illustrating a spécifie example of a carrier aggregation bandwidth class according to an embodiment of the présent invention ;

FIG. 6 is a diagram illustrating carrier aggregation bandwidth classes including séparations according to an embodiment of the présent invention;

FIG. 7A is a schematic diagram illustrating a spécifie example of a carrier aggregation bandwidth class according to an embodiment of the présent 25 invention;

FIG. 7B is a schematic diagram illustrating a spécifie example of a carrier aggregation bandwidth class according to an embodiment of the présent invention; |

FIG. 8 is a diagram illustrating séparation classes according to an embodiment of the présent invention; i

I

FIG. 9A is a schematic diagram illustrating a spécifie example of a séparation class according to 35 an embodiment of the présent invention;

FIG. 9B is a schematic diagram illustrating a spécifie example of a séparation class according to

an embodiment of the présent invention;

FIG. 10A is a schematic diagram illustrating a spécifie example of a séparation class according to an embodiment of the présent invention;

FIG. 10B is a schematic diagram illustrating a spécifie example of a séparation class according to an embodiment of the présent invention;

FIG. 11 is a schematic diagram illustrating séparations according to various embodiments of the 10 présent invention;

FIG. 12 is a block diagram illustrating a functional configuration of a base station according to an embodiment of the présent invention; and

FIG. 13 is a schematic diagram illustrating a spécifie example of a hardware configuration of each of the user equipment and the base station according to an embodiment of the présent invention.

[EMBODIMENTS OF THE INVENTION]

[0011] In the following, embodiments of the présent invention are described based on the drawings.

[0012] In the following embodiments, user equipment supporting carrier aggregation is 25 disclosed. In intra-band non-contiguous CA, an available ΜΙΜΟ layer number may differ depending on a séparation between component carriers (CCs). For this reason, similar to LTE, reporting of an available ΜΙΜΟ layer numbe|r for each band of a band 30 combination, as capability information, has been discussed in NR. In contrast, in RAN 2, capability information related to the ΜΙΜΟ layer number is not reported for each band of the band combination, and the capability information related to the ΜΙΜΟ layer 35 number, as baseband capability, has been studied to separate from band combination signaling.

[0013] However, in the notation of the band

combination specified in the existing LTE, cases in which séparations between component carriers of intra-band non-contiguous CA are different may be unable to be appropriately represented, and, as 5 illustrated in FIG. 1, the cases may be denoted as identical band combinations (e.g., CA_n77A-n77A). Accordingly, when a ΜΙΜΟ layer number differs depending on a séparation between component carriers, for each band combination, a séparation between 10 component carriers and a ΜΙΜΟ layer number for each band are required to be reported as capability information, and, thus, a signaling size may increase. Accordingly, there is a need for a capability information signaling method for 15 efficiently reporting a séparation between component carriers and a ΜΙΜΟ layer number.

[0014] According to the présent disclosure, user equipment reports, to a base station, a séparation between component carriers for carrier aggregation 20 supported by the user eguipment, as capability information. According to an embodiment, user equipment reports, to a base station, a combination of component carriers (a band combination) for carrier aggregation supported by the user equipment 25 and a carrier aggregation bandwidth class indicating a séparation between the component carriers, as capability information. Alternatively, in another embodiment, user equipment reports, to a base | station, a combination of compon|ent carriers (a band 30 combination) for carrier aggregation supported by the user equipment and a séparation class indicating j a séparation between the component carriers for the । carrier aggregation supported by the user equipment, as capability information. Upon receiving the 35 capability information, the base station can detect the combination of the component carriers for the carrier aggregation supported by the user equipment

and the séparation between the component carriers. [0015] First, a radio communication System according to an embodiment of the présent invention is described by referring to FIG. 2 . FIG. 2 is a 5 schematic diagram illustrating a radio communication System according to the embodiment of the présent invention.

[0016] As illustrated in FIG. 2, a radio communication System 10 includes user equipment 100 10 and a base station 200. Typically, the radio communication System 10 is an NR System. However, the radio communication System 10 is not limited to this, and the radio communication System 10 may be any 3GPP compilant radio communication System 15 specified by 3GPP, or may be a non-3GPP compilant radio communication System.

[0017] The user equipment 100 is an information processing device including a function for radio communication with the base station 200 through a 20 cell. For example, without limiting, the user equipment 100 may be a mobile phone, a smartphone, a tablet, a wearable device, etc.

[0018] The base station 200 executes radio communication with multiple units of user equipment 25 including the user equipment 100, under control by a higher layer station (not depicted), such as a core network. In an NR System, the base station 200 may be referred to as a gNB, for example. In the dejpicted embodiment, only one base station 200 is 30 illustrated. Typically, multiple base stations are deployed to cover a coverage range of the radio communication System 10. ;

[ 0j019 ] Next, user equipment according to an embodiment of the présent invention is described by 35 referring to FIG. 3. FIG. 3 is a block diagram illustrating a functional configuration of the user equipment according to the embodiment of the présent invention .

[0020] As illustrated in FIG. 3, the user equipment 100 is provided with a capability information storage unit 110 and a capability 5 information transmitting unit 120.

[0021] The capability information storage unit 110 stores capability information of the user equipment 100. Specifically, the capability information storage unit 110 maintains capability 10 information (UE Capability) representing various types of capability and functions supported by the user equipment 100. For example, when the user equipment 100 supports carrier aggregation, the capability information storage unit 110 maintains 15 capability information including an information element representing that the user equipment 100 supports carrier aggregation and an information element representing details of a band combination with which the carrier aggregation can be executed. 20 [0022] The capability information transmitting unit 120 reports capability information to the base station 200. Specifically, upon receiving a capability information query message from the base station 200, the capability information transmitting 25 unit 120 transmits capability information stored in the capability information storage unit 110 to the base station 200. In the embodiment, the capability information transmitting unit 120 reports, to the base station 200, a séparation between comp|onent 30 carriers for carrier aggregation supported by the user equipment 100, as the capability information. Specifically, as described in detail below,j the capability information storage unit 110 maintains capability information including an information 35 element representing a frequency séparation (frequency séparation) between at least two component carriers for intra-band non-contiguous CA

supported by the user equipment 100, and, in response to receiving a capability information query message from the base station 200, the capability information transmitting unit 120 transmits the capability information including the information element to the base station 200.

[0023] In an embodiment, the capability information storage unit 110 may store a combination of component carriers for carrier aggregation supported by the user equipment 100 and a carrier aggregation bandwidth class representing a séparation between the component carriers supported by the user equipment 100. At this time, the capability information transmitting unit 120 may report, to the base station 200, the combination of the component carriers for the carrier aggregation supported by the user equipment 100 and the carrier aggregation bandwidth class, as the capability information.

[0024] As an example, for intra-band noncontiguous CA up to 2 CCs, carrier aggregation bandwidth classes, such as those shown in FIG. 4, may be defined. For example, if the user equipment 100 supports the carrier aggregation bandwidth class

A, as depicted, the user equipment 100 is capable of executing radio communication such that a number of component carriers is 1 and an aggregated channel bandwidth (CBW) is 100 MHz. Similarly, if the user equipment 1θθ|supports the carrier aggregation | bandwidth class C, as depicted, the user equipment 100 supports carrier aggregation such that a number of component carriers is 2, an aggregated channel bandwidth (CBW) is from 100 MHz to 200 MHz, and a séparation between center frequencies of component carriers (Fs) is the channel bandwidth (i.e., two component carriers are contiguous). Similarly, if the user equipment 100 supports the carrier

aggregation bandwidth class D, as depicted, the user equipment 100 supports carrier aggregation such that a number of component carriers is 2, an aggregated channel bandwidth (CBW) is from 100 MHz to 200 MHz, 5 and a séparation between center frequencies of component carriers (Fs) satisfies CBW < Fs 2CBW. Similarly, if the user equipment 100 supports the carrier aggregation bandwidth class E, as depicted, the user equipment 100 supports carrier aggregation 10 such that a number of component carriers is 2, an aggregated channel bandwidth (CBW) is from 100 MHz to 200 MHz, and a séparation between center frequencies of component carriers (Fs) satisfies 2CBW < Fs < 4CBW.

[0025] The capability information storage unit

110 may maintain a carrier aggregation bandwidth class supported by the user equipment 100, among the carrier aggregation bandwidth classes defined as described above, and the capability information transmitting unit 120 may report, to the base station 200, the carrier aggregation bandwidth class maintained in the capability information storage unit 110, as the capability information. For example, as shown in FIG. 5A, if the user equipment 25 100 supports the carrier aggregation bandwidth class

C in Band n77, the capability information transmitting unit 120 may report, to the base station 200, a combination of component carriers for carrier aggregation| supported by the user equipment 30 100 and the carrier agqregation bandwidth class

CA_n77C representing a séparation between the component carriers,] as the capability information. Similarly, as shown in FIG. 5B, if the user equipment 100 supports the carrier aqgregation bandwidth class D in Band n77, the capability information transmitting unit 120 may report, to the base station 200, a combination of component carriers for carrier aggregation supported by the user equipment 100 and the carrier aggregation bandwidth class CA_n77D representing a séparation between the component carriers, as the capability information. Upon receiving the capability information, the base station 200 can recognize, based on the received capability information, that the user equipment 100 supports the carrier aggregation with the séparation, such as the depicted séparations.

[0026] Additionally, as shown in FIG. 6, the above-described embodiment can be applied to three or more CCs. For example, if the user equipment 100 supports the carrier aqgregation bandwidth class E, as depicted, the user equipment 100 supports carrier aggregation such that a number of component carriers is 3, an aggregated channel bandwidth (CBW) is from 200 MHz to 300 MHz, and a séparation between center frequencies of component carriers (Fs) is 2CBW (i.e., three component carriers are contiguous). Similarly, if the user equipment 100 supports the carrier aggregation bandwidth class F, as depicted, the user equipment 100 supports carrier aggreqation such that a number of component carriers is 3, an aggregated channel bandwidth (CBW) is from 200 MHz to 300 MHz, and a séparation between center frequencies of component carriers (Fs) satisfies 2CBW < Fs t 4CBW. [0027] The capability information storaqe unit 110 may maintain a carrier aqqregation bandwidth class supported by the user equipment 100, among the carrier aggregation bandwidth classes defined as described above, and the|capability information transmitting unit 120 may report, to the base station 200, the carrier aggregation bandwidth class maintained in the capability information storage unit 110, as the capability information. For example, as shown in FIG. 7A, if the user equipment

100 supports the carrier aggregation bandwidth class E in Band n77, the capability information transmitting unit 120 may report, to the base station 200, a combination of component carriers for 5 carrier aggregation supported by the user equipment 100 and the carrier aggregation bandwidth class CA_n77E representing a séparation between the component carriers, as the capability information. Similarly, as shown in FIG. 7B, if the user equipment 100 supports the carrier aggregation bandwidth class F in Band n77, the capability information transmitting unit 120 may report, to the base station 200, a combination of component carriers for carrier aggregation supported by the user equipment 100 and the carrier aggregation bandwidth class CA_n77F representing a séparation between the component carriers, as the capability information. Upon receiving the capability information, the base station 200 can recognize, 20 based on the received capability information, that the user equipment 100 supports the carrier aggregation with the séparation, such as the depicted séparation.

[0028] Here, a carrier aggregation bandwidth class may be associated with a ΜΙΜΟ layer number. Specifically, a ΜΙΜΟ layer number that can be supported by the user equipment 100 may be indicated by a BBC (Baseband Processing Combination) index representing a function relatejd to a baseband of the 30 user equipment 100, and a carrier aggregation bandwidth class supported by the user equipment 100 may be associated with the BPC| index. For example, if the user equipment 100 supports the carrier aggregation bandwidth class C and a ΜΙΜΟ layer number X corresponding to a BPC index #1 in Band n77, the capability information transmitting unit 120 may report, to the base station 200, the above-described

CA_n77C and the associated BPC index #1, as the capability information. Similarly, if the user equipment 100 supports the carrier aggregation bandwidth class F and a ΜΙΜΟ layer number Y corresponding to a BPC index #2 in Band n77, the capability information transmitting unit 120 may report, to the base station 200, the above-described CA_n77F and the associated BPC index #2, as the capability information.

[0029] Additionally, in another embodiment, the capability information storage unit 110 may store a séparation class representing a séparation between component carriers for carrier aggregation supported by the user equipment 100. At this time, the capability information transmitting unit 120 may report, to the base station 200, a combination of the component carriers for the carrier aggregation supported by the user equipment 100 and the séparation class supported by the user equipment 100, 20 as the capability information.

[0030] As an example, for intra-band noncontiguous CA up to 2 CCs, séparation classes, such as those shown in FIG. 8, may be defined. For example, if the user equipment 100 supports a séparation class I, as depicted, the user equipment 100 supports carrier aggregation such that a séparation between center frequencies of component carriers (Fs) satisfies CBW < Fs 2CBW. Similarly, j_f the user equipment 100 supports a| séparation class II, as depicted, the user equipment 100 supports carrier aggregation such that a séparation between center freguencies of component carriers |(Fs) satisfies 2CBW < Fs i 4CBW. Similarly, if the user equipment 100 supports a séparation class III, 35 as depicted, the user equipment 100 supports carrier aggregation such that a séparation between center freguencies of component carriers (Fs) satisfies

4CBW < Fs < 8CBW.

[0031] The capability information storage unit 110 may maintain a séparation class supported by the user equipment 100, among the séparation classes 5 defined as described above, and the capability information transmitting unit 120 may report, to the base station 200, the séparation class maintained in the capability information storage unit 110, as the capability information. For example, as shown in 10 FIG. 9A, if the user equipment 100 supports a band combination CA_n77 with two contiguous component carriers in Band n77, the capability information transmitting unit 120 may report CA_n77C to the base station 200, without reporting the séparation class. 15 Whereas, as shown in FIG. 9B, if the user equipment

100 supports the band combination CA_n77 with two non-contiguous component carriers and the séparation class I in Band n77, the capability information transmitting unit 120 may report, as the capability 20 information, CA_n77IA-n77IA to the base station 200.

Upon receiving the capability information, the base station 200 can recognize, based on the received capability information, that the user equipment 100 supports the carrier aggregation with the séparation, 25 such as the depicted séparation.

[0032] The above-described embodiment can be applied to three or more CCs. For example, as shown in FIG. 10A, if the user equipment 100 supports a band combination CA_n77 with three contigijious 30 component carriers in Band n77, the capability information transmitting unit 120 reports CA_n77E to the bajSe station 200 without reporting a séparation class.| Whereas, as shown in FIG. 10B, ifjthe user equipment 100 supports the band combination CA_n77 35 with three non-contiguous component carriers and the séparation class II in Band n77, the capability information transmitting unit 120 may report, as the capability information, CA_n77IIA-n77IIA-n77IIA to the base station 200. Upon receiving the capability information, the base station 200 can recognize, based on the received capability information, that 5 the user equipment 100 supports the carrier agqregation based on the band combination with the séparation, such as the depicted séparation.

[0033] Here, a séparation class may be associated with a ΜΙΜΟ layer number. Specifically, a séparation class supported bythe user equipment 100 may be associated with a BPC index. For example, if the user equipment 100 supports the séparation class I and a ΜΙΜΟ layer number X corresponding to a BPC index #1 in Band n77, the capability information 15 transmitting unit 120 may report, to the base station 200, the above-described CA_n77IA-n77IA and the associated BPC index #1, as the capability information.

[0034] Additionally, in an embodiment, a séparation between component carriers for carrier aggregation may take a same value or different values for downlink communication and uplink communication. For example, if the user equipment 100 supports a band combination with a same séparation for both downlink CA and uplink CA, the capability information transmitting unit 120 may report, as the capability information, the séparation that takes the same value to the base station 200 .| Whereas, if the user equipment 10|θ 30 supports a band combination with different séparations for downlink CA and uplink CA, the capability information transmitting unit 120 may report, to the base station 200, the separation| for the downlink CA and the séparation for the uplink CA, 35 as the capability information.

[0035] In the above-described embodiments, the séparation is defined to be a frequency séparation between center frequencies of a component carrier in a highest frequency band and a component carrier in a lowest frequency band. However, in another embodiment, as illustrated in FIG. 11, a séparation 5 may be defined to be a frequency séparation between inner edqes of a component carrier in a highest frequency band and a component carrier in a lowest frequency band, or a frequency séparation between outer edges of a component carrier in a highest 10 frequency band and a component carrier in a lowest frequency band. [0036] Next, by referring to FIG. 12, a base station according to an embodiment of the présent invention is described. FIG. 12 is a block diagram 15 illustrating a functional configuration of the base station according to the embodiment of the présent invention. [0037] As illustrated in FIG. 12, the base station 200 includes a communication control unit

210 and a UE capability information management unit

220 .

[0038] The communication control unit 210 Controls radio communication with the user equipment 100. Specifically, in order to execute radio 25 communication with the user equipment 100, the communication control unit 210 transmits and receives various types of radio signais, such as downlink control/data signais and/or uplink control/data signais. |

[0039] The UE capability information management unit 220 maintains capability information received from the user equipment 100. Specifically, the UE | capability information management unit 220 transmits j a capability information query message to the user 35 equipment 100, and the UE capability information management unit 220 receives capability information from the user equipment 100 in response to the capability information query message.

[0040] In the embodiments, as described above, the user equipment 100 transmits, to the base station 200, capability information including a 5 séparation between component carriers for carrier aggregation supported by the user equipment 100. Upon receiving the capability information, the communication control unit 210 can detect, based on the received capability information, a band combination for the carrier aggregation supported by the user equipment 100 and the séparation between the component carriers, and the communication control unit 210 can configure the carrier aggregation on the user equipment 100 based on the arrangement of the component carriers in the band combination supported by the user equipment 100. [0041] (Conclusion of the embodiments)

As described above, according to the embodiments, there is provided user equipment 20 including a capability information storage unit that stores capability information of the user equipment; and a capability information transmitting unit that reports the capability information to a base station, wherein the capability information transmitting unit 25 reports, to the base station, a séparation between component carriers for carrier aggregation supported by the user equipment, as the capability information. According to the user equipment, the séparation between the component c|arriers for the carrier 30 aggregation supported by the user equipment can be efficiently reported as the capability information. [0042] The capability information storage unit may store a combination of the component carriers for the carrier aggregation supported by the user 35 equipment and a carrier aggregation bandwidth class supported by the user equipment, the carrier aggregation bandwidth class representing the séparation between the component carriers, and the capability information transmitting unit may report, to the base station, the carrier aggregation bandwidth class supported by the user equipment, as 5 the capability information.

[0043] The carrier aggregation bandwidth class may be associated with a ΜΙΜΟ layer number.

[0044] The capability information storage unit may store a séparation class representing the séparation between the component carriers for the carrier aggregation supported by the user equipment, and the capability information transmitting unit may report, to the base station, a combination of the component carriers of the carrier aggregation supported by the user equipment and the séparation class supported by the user equipment, as the capability information.

[0045] The séparation class may be associated with a ΜΙΜΟ layer number.

[0046] The séparation between the component carriers of the carrier aggregation may take identical values or different values for downlink communication and uplink communication.

[0047] The séparation may be a frequency séparation between center frequencies of a component carrier in a highest frequency band and a component carrier in a lowest frequency band; a frequency séparation between inner edges of the component carrier in the highest frequency band and the component carrier in the lowest frequency band; or a frequency séparation between outer edges of the component carrier in the highest frequency band and the component carrier in the | lowest frequency band. [0048] User equipment includes a controller that 35 includes, in capability information, a frequency séparation between a lower edge of a component carrier with a lowest frequency for supported carrier aggregation and an upper edge of a component carrier with a highest frequency for the supported carrier aggregation; and a transmitter that transmits the capability information to a base 5 station.

[0049] The controller may include a combination of the component carriers for the carrier aggregation in the capability information.

[0050] The capability information may be 10 associated with a ΜΙΜΟ layer number.

[0051] The transmitter may include a séparation class representing the séparation between the component carriers for the supported carrier aggregation and a combination of the component 15 carriers for the supported carrier aggregation in the capability information, and may transmit the séparation class and the combination to the base station.

[0052] The séparation class may be associated 20 with the ΜΙΜΟ layer number.

[0053] The séparation between the component carriers of the carrier aggregation may take identical values or different values for downlink communication and uplink communication.

[0054] The séparation may be a frequency séparation between center frequencies of the component carrier in the highest frequency band and the component carrier in the lowest frequency band;

| a frequency séparation between inn^r edges of the 30 component carrier in the highest frequency band and the component carrier in the lowest frequency band;

। or a frequency séparation between outer edges of the । component carrier in the highest frequency band and the component carrier in the lowest frequency band. 35 [0055] A transmission method by user equipment includes a step of including, in capability information, a frequency séparation between a lower edge of a component carrier with a lowest frequency for supported carrier aggregation and an upper edge of a component carrier with a highest frequency for the supported carrier aggregation; and a step of transmitting the capability information to a base station.

[0056] (Supplémentai embodiment)

The block diagrams used for the descriptions of the above-described embodiments represent blocks on a function-by-function basis. These functional blocks (components) are implemented by any combination of at least one of hardware and software. Here, a means for implementing each functional block is not particularly limited. Namely, each functional block may be implemented by one device that is physically or logically combined, or may be implemented by a plurality of devices that is obtained by directly or indirectly (e.g., using a wired line or a wireless link) connecting two or more devices that are physically or logically separated. A functional block may be implemented by combining software with the above-described one device or the above-described plurality of devices. [0057] The functions include détermination, decision, judgment, calculation, computation, processing, dérivation, investigation, search, confirmation, réception, transmission, output, access, resolution, sélection, choice, establishment, comparison, assumption, expectation, dee|ming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. However, the functions ,are not limited to these. For example, a functional block (component) for transmitting is referred to as a transmitting unit or a transmitter. As described above, a method for implement any one of these is not particularly limited.

[0058] For example, the user equipment 100 and the base station 200 according to the embodiment of the present invention may function as computers for executing a process of the radio communication method of the present invention. FIG. 13 is a block diagram illustrating a hardware configuration of each of the base user equipment 100 and the base station 200 according to an embodiment of the present invention. Each of the above-described user 10 equipment 100 and base station 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 500, an output device 1006, a bus 1007, etc.

[0059] Note that, in the following description, the term apparatus can be read as a circuit, a device, a unit, etc. The hardware configuration of each of the user equipment 100 and the base station 200 may be configured to include one or more of the 20 respective devices illustrated, or may be configured not to include a part of the devices.

[0060] Each function of the user equipment 100 and the base station 200 is implemented by loading predetermined software (program) on hardware, such 25 as the processor 1001 and the memory 1002, so that the processor 1001 performs computation and Controls communication by the communication device 1004, and at least one of reading and writing of data in the memory 10012 and the storage 1003. |

[0061] The processor 1001, for example, opérâtes an operating system to control the entire computer. The procesteor 1001 may be configured with a central processingi unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, a processing device, a register, etc. For example, each of the above-described components may be implemented by the processor 1001.

[0062] Additionally, the processor 1001 reads a program (program code) , a software module and data from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to these. As the program, a program is used which causes a computer to execute at least a part of the operations described in the above-described embodiments. For example, a process by each component of each of the user equipment 100 and the base station 200 may be implemented by a control program stored in the memory 1002 and executed by the processor 1001, and another functional block may be similarly implemented. Although it is described that the above-described various processes are executed by a single processor 1001, the abovedescribed various processes may be simultaneously or sequentially executed by two or more processors 1001. The processor 1001 may be implemented with one or more chips. Note that the program may be transmitted from a network via an electric communication line.

[0063] The memory 1002 is a computer readable recording medium, and the memory 1002 may be formed of at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), etc. The memory 1002 may be referred to as a register(, a cache, a main memory (main | storage device), etc. The memory 1002 can store exécutable programs (program codes), software modules, etc., that can be executed to implement the radio communication method according to the । embodiment of the présent invention.

[0064] The storage 1003 is a computer readable recording medium, and, for example, the storage 1003 may be formed of 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 (for example, a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, 5 a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. The storage 1003 may be referred to as an auxiliary storage device. The above-described storage medium may be, for example, 10 a database including the memory 1002 and/or the storage 1003, a server, or any other suitable medium. [0065] The communication device 1004 is hardware (transmission/reception device) for performing communication between computers via a wired and/or 15 wireless network, and, for example, the communication device 1004 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 20 frequency switch, a duplexer, a filter, a frequency synthesizer, etc., to amplement at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). For example, a transmission/reception antennal 101, an amplifier 102, a transceiver 103, a transmission line interface 106, etc., may be implemented by the communication device 1004. The transceiver 103 may be implemented such that a transmitter 103a and receiver 103b are physically 30 or logically separated.

[0066] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) for receiving an input from outside. The output device 1006 is an output 35 device (e.g., display, speaker, LED lamp, etc.) that performs output toward outside. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

[0067] Furthermore, the devices, such as the processor 1001 and the memory 1002, are connected by a bus 1007 for communicating information. The bus 5 1007 may be formed of a single bus, or the bus 1007 may be formed of buses that are different among the devices.

[0068] Furthermore, each of the user equipment 100 and the base station 200 may be configured to 10 include hardware, such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Spécifie Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gâte Array), etc., and a part or 15 ail of the functional blocks may be implemented by the hardware. For example, the processor 101 may be implemented with at least one of these hardware components.

[0069] Notification of information is not limited 20 the aspect/embodiment described in the présent spécification and may be performed by other methods. For example, notification of information may be performed via physical layer signaling (for example, Downlink Control Information (DCI) or Uplink Control 25 Information (UCI)), higher-layer signaling (for example, RRC signaling, MAC signaling, broadeast information (Master Information Block (MIB), or System Information Block (SIB)), other signais, or by a combination thereof. ^oreover, RRC signaling 30 may be referred to as an RRC message, and, for example, the RRC message may be an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration |(RRC Connection Reconfiguration) message, or the like, for example. 35 [0070] Each aspect/embodiment described in this spécification can be applied to long term évolution (LTE), LTE-advanced (LTE-A), SUPER 3G, IMT-Advanced,

4G, 5G, future radio access (FRA), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, ultra5 wideband (UWB), Bluetooth (registered trademark), any other Systems using an appropriate system and/or next génération Systems extended on the basis of these Systems. [0071] In processing procedures, sequences, 10 flowcharts, etc., of each embodiment/modified example described in the spécification, the order may be changed provided that there is no contradiction. For example, for the methods described in the spécification, the éléments of the 15 various steps are presented in an exemplary order and are not limited to a spécifie order presented. [0072] The spécifie operations that are described in the spécification to be performed by the base station 200 may be performed by their upper nodes in 20 some cases. In a network formed of one or more network nodes including a base station, it is apparent that the various operations performed for communication with the terminal may be performed by the base station and/or a network node other than the base station (e.g., MME or S-GW can be considered, however, not limited to these). In the above description, a case is exemplified in which there is one network node other than the base | station. However, it can be a combination of other 30 network nodes (e.g., MME and S-GW).

[0073] Information, etc., may be output from a ! higher layer (or a lower layer) to a lower layer (a i | higher layer). Input and output may be performed through a plurality of network nodes.

[0074] Input and output Information, etc., may be stored in a spécifie location (for example, a memory) and may be managed by a management table.

The input and output information and the like may be overwritten, updated, or rewritten. The output information and the like may be erased. The input information and the like may be transmitted to other 5 apparatuses.

[0075] Détermination may be made by a value (0 or 1) represented by one bit, may be made by a Boolean value (Boolean: true or false), or may be made by comparison of numerical values (comparison with a 10 predetermined value, for example).

[0076] Each aspect/embodiment described in this spécification may be used alone, may be used in combination, or may be used while being switched during the execution. Furthermore, notification of 15 predetermined information (e.g., notification of being X) is not limited to notification that is made explicitly, and the notification may be made implicitly (e.g., notification of the predetermined information is not performed).

[0077] The présent invention is described in detail above. It is apparent to a person ordinarily skilled in the art that the présent invention is not limited to the embodiments described in the spécification. The présent invention can be implemented as modifications and alterations without departing from the gist and scope of the présent invention that are determined by the descriptions of the claims. Accordingly, the descriptions of the pre|sent spécification are for the purpose of illustration and does not hâve any restrictive meaning to the présent invention.

[0078] The software should be widely interpreted to imean an instruction, an instruction! set, a code, a code segment, a program code, a program, a subprogram, a software module, an application, a software application, a software package, a routine, a subroutine, an object, an exécutable file, an execution thread, a procedure, a function, etc., regardless of whether the software is referred to as software, firmware, middleware, microcode, hardware description language or other names.

[0079] Furthermore, software, instructions, etc., may be transmitted and received via a transmission medium. For example, when the software is transmitted from a website, server, or another remote source using at least one of wired technology 10 (e.g., coaxial cable, fiber optic cable, twisted pair and digital subscriber line (DSL)) and wireless technology (infrared, radio, microwave, etc.), at least one of these wired and wireless technologies is included within the définition of the 15 transmission medium.

[0080] Information, signais, etc., described in the présent disclosure may be represented using any of various other techniques. For example, data, instructions, commands, information, siqnals, bits, 20 symbols, chips, and the like mentioned in the entire description may be represented by voltage, current, electromagnetic waves, magnetic field or magnetic particles, optical field or photons, or any combination thereof.

[0081] Note that the terms described in this disclosure and the terms necessary for understanding of this spécification may be replaced with terms having the same or similar meaning. For example, at least on^ of a channel and a symbol may be s|ignal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be referred;to as a carrier frequency, a cell, jetc.

[0082] i The terms system and network as used in this disclosure are used interchangeably.

[0083] Furthermore, the information, parameters, etc., described in this spécification may be represented by absolute values, may be represented as relative values from predetermined values, or may be represented by any other corresponding information. For example, the radio resource may be indicated by an index.

[0084] The names used for the above-described parameters are not for limiting in any point.

Furthermore, mathematical expressions, etc., using these parameters may be different from those explicitly disclosed in this spécification. Since the various channels (e.g., PUCCH, PDCCH, etc.) and information éléments (e.g., TPC etc.) can be identified by suitable names, the various names assigned to these various channels and information éléments are not for limiting in any point.

[0085] In the présent disclosure, it is assumed that BS (Base Station) , Radio Base Station, Fixed Station, Node B, eNode B (eNB), gNode B (gNB), access point, transmission point, réception point, transmission/reception point, cell, sector, cell group, carrier, component carrier, etc., can be used interchangeably. A base station may also be referred to by a term, such as a macro cell, a small cell, a femtocell, and a pico-cell.

[0086] A base station can accommodate one or more (e.g., three) cells (also referred to as sectors). When the base station accommodâtes a plurality of cells, the entire coverage area of the base station can be divided| into a plurality of smaller areas, | and each smaller area may also provide communication services by base station subsystem (e.g., indoor small base station RRH : Remote Radio Head) . The । term cell orj sector refers to a part or ail of the coverage area of a base station and/or base station subsystem that provides communication service in this coverage. Furthermore, the terms base station, eNB, cell, and sector may be used interchangeably in this spécification. The base station may also be referred to as a fixed station, a NodeB, eNodeB (eNB), an access point, a femtocell, a small cell, etc.

[0087] In the présent disclosure, the terms, such as mobile station (MS), user terminal, user equipment (UE), terminal, etc., can be used interchangeably.

[0088] A mobile station may be referred to, by a 10 person ordinarily skilled in the art, as a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber stations, an 15 access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or it may also be called by some other suitable terms.

[0089] At least one of the base station and the 20 mobile station may be referred to as a transmitter, a receiver, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, etc. The mobile body may be a vehicle 25 (e.g., a car, an airplane, etc.), an unmanned mobile body (e.g., a drone, an automatically driven vehicle, etc.) or a robot (a manned type or an unmanned type). At least one of the base station and the mobile station also include|s a device that does not 30 necessarily move during a communication operation.

For example, at least one of the base station and the mobile station may be an loT (Internet of Things) device, such as a sensor.

[0090] The base station in the présent disclosure 35 may be replaced with a user terminal. For example, each aspect/embodiment of the présent disclosure may be applied to a configuration obtained by replacing communication between a base station and a user terminal with communication between a plurality of user terminais (which may be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything) , etc. 5 for example). In this case, the user terminal 20 may be provided with the functions of the abovedescribed base station 10. Additionally, terms, such as uplink and downlink, may be replaced with terms corresponding to inter-terminal communication (e.g., side). For example, an uplink channel, a downlink channel, etc., may be replaced with side channels.

[0091] Similarly, the user terminal in the présent disclosure may be replaced with the base 15 station. In this case, the configuration may be such that the base station 10 is provided with the functions of the user terminal 20.

[0092] The terms détermine (determining) and décidé (determining) used in this spécification may include various types of operations. For example, determining and deciding may include deeming that a resuit of calculating, computing, processing, deriving, investigating, looking up (e.g., search in a table, a database, or another 25 data structure), or ascertaining is determined or decided. Furthermore, determining and deciding may include, for example, deeming that a resuit of receiving (e.g., réception of information), transmitting (e.g., transmission of information), 30 input, output, or accessing (e.g., accessing data in memory) is determined or decided. Furthermore, determining and deciding may include deeming that a resuit of resolving, selecting, choosing, establishing, or comparing is determined or decided.

Namely, determining and deciding may include deeming that some operation is determined or decided. [0093] The terms connected, coupled, or any variation thereof mean any direct or indirect connection or coupling between two or more éléments, and may include the presence of one or more intermediate éléments between the two éléments connected or coupled to each other. The coupling or connection between the éléments may be physical, logical or a combination thereof. Two éléments, when used in this spécification, can be considered to be mutually connected or coupled by 10 using one more more wires, cables and/or printed electrical connections, and, as some non-limiting and non-inclusive examples, by using electromagnetic energy such as electromagnetic energy with a wavelength in a radio frequency range, a microwave 15 range, and an optical range (both visible and invisible).

[0094] The reference signal may be abbreviated as RS (Reference Signal), and may be referred to as a pilot (Pilot) according to applicable standards.

[0095] The expression on the basis of used in the présent spécification does not mean on the basis of only unless otherwise stated particularly. In other words, the expression on the basis of means both on the basis of only and on the basis 25 of at least.

[0096] Any reference to éléments using names, such as first and second, as used in this spécification does not generally limit the amount or | order of those éléments. These| names can be used in 30 this spécification as a convenient way to distinguish between two or more éléments.

। Accordingly, the reference to the first and second j éléments does not imply that only two éléments can be adopted, or that the first element must précédé 35 the second element in some way.

[0097] Means in the configuration of each of the above-described devices may be replaced with part, circuit, device, etc.

[0098] As long as include, including, and variations thereof are used in this spécification or the claims, the terms are intended to be inclusive 5 in a manner similar to the term comprising.

Furthermore, the term or used in the spécification or claims is intended not to be an exclusive OR. [0099] A radio frame may be formed of one or more frames in the time domain. In the time domain, each 10 of the one or more of frames may be referred to as a subframe. A subframe may be formed of one or more slots in the time domain. A slot may be formed of one or more symbols (OFDM symbols, SC-FDMA symbols, etc.) in the time domain. Each of the radio frame, 15 subframe, slot, and symbol represents a time unit for transmitting a signal. The radio frame, subframe, slot, and symbol may be called by respective different names. For example, in LTE System, the base station performs scheduling to 20 allocate radio resources (a frequency bandwidth, transmission power, etc., that can be used by each mobile station) to each mobile station. The minimum time unit of scheduling may be referred to as TTI (Transmission Time Interval). For example, one subframe may be referred to as TTI, a plurality of consecutive subframes may be referred to as TTI, or one slot may be referred to as TTI. A resource block (RB) is a resource allocation unit in the time demain and the frequency domain, and |may include one 30 or more consecutive subcarriers in the frequency domain. Additionally, the resource block may include one or more symbols in the time domain, and may hâve a length of one slot, one subframe, or one TTI. Each of one TTI and one subframe may be formed of one or more resource blocks. The above-described configuration of the radio frame is merely an example, and the number of subframes included in the

radio frame, the number of slots included in the subframe, the number of symbols and resource blocks included in the slot, and the number of subcarriers included in the resource block can be variously changed.

[0100] In the présent disclosure, if an article is added by translation, such as a, an, and the in English, the disclosure may include that the noun following the article is plural.

[0101] The embodiments of the invention are described above in detail. However, the invention is not limited to the above-described spécifie embodiments, and various modifications and changes may be made within a range of the gist of the présent invention described in the claims.

[0102] This international application is based upon and claims priority to Japanese Patent Application No. 2018-003712 filed on January 12, 2018, and the entire content of Japanese Patent

Application No. 2018-003712 is incorporated herein by reference.

LIST OF REFERENCE SYMBOLS

[0103] 10 radio communication system

100 user equipment

200 base station

Claims (4)

1. 5 1. A terminal comprising:

   a processor that includes, in capability information, a frequency séparation between a lower edge of a component carrier with a lowest frequency for supported carrier aggregation and an upper edge of a component carrier with a highest frequency for the supported carrier aggregation; and

   10 a transmitter that transmits the capability information to a base station.
2. 2. The terminal according to claim 1, wherein the processor includes a combination of the component carriers for the carrier aggregation in the capability information.
3. 3. The terminal according to claim 2, wherein the capability information includes a ΜΙΜΟ layer number.
4. 4. A transmission method by a terminal, the method comprising:

   20 including, in capability information, a frequency séparation between a lower edge of a component carrier with a lowest frequency for supported carrier aggregation and an upper edge of a component carrier with a highest frequency for the supported carrier aggregation; and transmitting the capability information to a base station.