Abstract: A mobile station which configures a plurality of component carriers to communicate with a base station is discloses herein including a reception unit configured to receive from the base station a gap pattern according to which a portion of an inter-frequency measurement duration is used for data communication and a communication control unit configured to control communication according to the gap pattern.

Abstract: A user apparatus in a mobile communication system including a base station and the user apparatus, including: reception means that receives, from the base station, a parameter for all symbols that is used when performing cell selection processing or cell reselection processing based on all symbol signal reception quality that is signal reception quality based on measurement in all OFDM symbols; and cell selection control means that performs measurement of the all symbol signal reception quality, and performs cell selection processing or cell reselection processing by using a result of the measurement and the parameter for all symbols received by the reception means.

Abstract: An object of the present invention is to provide techniques for implementing inter-frequency measurement with flexible small gap measurement corresponding to capability of user equipment and/or to-be-measured cells. One aspect of the present invention relates to user equipment for transmitting and receiving radio signals to/from a base station, comprising: a capability information indication unit configured to indicate capability information of the user equipment to the base station; and an inter-frequency measurement unit configured to perform, upon receiving a small gap measurement applied inter-frequency measurement indication from the base station, a small gap measurement applied inter-frequency measurement in accordance with a small gap period for causing communication with the base station to be interrupted and an inter-frequency measurement period indicated in the inter-frequency measurement indication.

Abstract: There is provided a base station of a radio communication system supporting carrier aggregation, the base station including a generator configured to generate configuration information indicating whether measurement requirements on reception quality are allowed to be relaxed with respect to a frequency of a predetermined secondary cell or with respect to the predetermined secondary cell, among a plurality of secondary cells, and a transmitter configured to transmit the configuration information to a user apparatus.

Abstract: A user equipment including a processor that measures a Signal to Interference and Noise Ratio (SINR) based on a reference signal and a transmitter that reports the measured SINR to a base station in accordance with a predefined reporting trigger. The processor further measures one or both of a Reference Signal Received Quality (RSRQ) and a Reference Signal Received Power (RSRP), and the transmitter reports one or both of the measured RSRQ and RSRP together with the measured SINR to the base station in accordance with the predefined reporting trigger.

Abstract: A mobile station which configures a plurality of component carriers to communicate with a base station is discloses herein including a reception unit configured to receive from the base station a gap pattern according to which a portion of an inter-frequency measurement duration is used for data communication and a communication control unit configured to control communication according to the gap pattern.

Abstract: A user apparatus in a mobile communication system supporting carrier aggregation includes a measurement unit configured to measure an rs-sinr (reference signal-signal to interference and noise ratio) for a reference signal in a physical downlink control channel transmitted from a base station; and a reporting unit configured to report the measured rs-sinr to the base station in accordance with a predefined reporting trigger.

Abstract: The present disclosure relates to some techniques for controlling carrier aggregation properly in a radio communication system including a mixture of harmonic-supported user equipments and harmonic-unsupported user equipments. One aspect of the present invention relates to a user equipment having a carrier aggregation function, comprising: a communication control unit configured to control radio communication with a base station; a capability management unit configured to manage a requirement on transmission and reception characteristics supported by the user equipment for each combination of carrier aggregation frequency bands; and a capability reporting unit configured to report the requirement on the transmission and reception characteristics supported by the user equipment as a capability to the base station.

Abstract: In CA performed using three or more frequency bands, whether or not a mobile station UE is capable of performing an inter-frequency measurement without a gap is properly determined. The mobile station UE according to the invention includes a transmission unit 11 configured to transmit “UE Capability” indicating a capability of the mobile station UE to a radio base station eNB. The transmission unit 11 is configured to notify frequency bands in which the mobile station UE is capable of performing an inter-frequency measurement without a gap for each “CA band combination” as the “UE Capability”.

Abstract: An object is to improve the throughput of a mobile station UE without affecting the coverage of a macrocell in a case where CA is introduced to a HetNet environment. A radio base station eNB according to the present invention is configured to determine whether or not to change the connection destination of a mobile station UE from a small cell #1 to a small cell #2 while the mobile station UE is performing CA by using the macrocell and the small cell #1, based on at least one of the congestion status in each of the small cell #1 and the small cell #2 and the communication quality in each of the small cell #1 and the small cell #2.

Abstract: The present invention is designed to apply beam forming control between base stations in accordance with traffic that varies over time or geographically. A radio base station can exchange control information with a neighbor radio base station via backhaul, and has a transmitting/receiving section that transmits and receives the control information through backhaul signaling, and a control section that controls the antenna beam pattern of one or both of the neighbor radio base station and the radio base station based on traffic information and information about antenna beam forming for the neighbor radio base station and the radio base station, which are included in the control information.

Abstract: A user apparatus in a mobile communication system including a base station and the user apparatus, including: reception means that receives, from the base station, a parameter for all symbols that is used when performing cell selection processing or cell reselection processing based on all symbol signal reception quality that is signal reception quality based on measurement in all OFDM symbols; and cell selection control means that performs measurement of the all symbol signal reception quality, and performs cell selection processing or cell reselection processing by using a result of the measurement and the parameter for all symbols received by the reception means.

Abstract: An object of the present invention is to provide techniques for implementing inter-frequency measurement with flexible small gap measurement corresponding to capability of user equipment and/or to-be-measured cells. One aspect of the present invention relates to user equipment for transmitting and receiving radio signals to/from a base station, comprising: a capability information indication unit configured to indicate capability information of the user equipment to the base station; and an inter-frequency measurement unit configured to perform, upon receiving a small gap measurement applied inter-frequency measurement indication from the base station, a small gap measurement applied inter-frequency measurement in accordance with a small gap period for causing communication with the base station to be interrupted and an inter-frequency measurement period indicated in the inter-frequency measurement indication.

Abstract: A mobile station which configures a plurality of component carriers to communicate with a base station includes a transmission unit configured to transmit to the base station a terminal capability associated with non-gap measurement indicating whether the mobile station is capable of performing inter-frequency measurement using a radio frequency (RF) chain which is not used for a component carrier; a reception unit configured to receive whether to allow the non-gap measurement from the base station; and a communication control unit configured to control communication according to a gap pattern of using a portion of an inter-frequency measurement duration for data communication, when the non-gap measurement is allowed.

Abstract: A user apparatus in a mobile communication system supporting carrier aggregation includes a measurement unit configured to measure an rs-sinr (reference signal-signal to interference and noise ratio) for a reference signal in a physical downlink control channel transmitted from a base station; and a reporting unit configured to report the measured rs-sinr to the base station in accordance with a predefined reporting trigger.

Abstract: The present disclosure prevents the occurrence of interference in an uplink in a case of adding a “UL Scell” while CA is being performed using a Pcell and a “DL Scell.” A mobile station UE according to the present invention is configured such that, in a case where the mobile station UE adds a “UL Scell” while performing CA by using a Pcell and a “DL Scell”, the mobile station UE suspends signal transmission using the “UL Scell” for a predetermined length of time even if the “DL Scell” is in an active state.

Abstract: An object is to improve the throughput of a mobile station UE without affecting the coverage of a macrocell in a case where CA is introduced to a HetNet environment. A radio base station eNB according to the present invention is configured to determine whether or not to change the connection destination of a mobile station UE from a small cell #1 to a small cell #2 while the mobile station UE is performing CA by using the macrocell and the small cell #1, based on at least one of the congestion status in each of the small cell #1 and the small cell #2 and the communication quality in each of the small cell #1 and the small cell #2.

Abstract: The present disclosure relates to some techniques for controlling carrier aggregation properly in a radio communication system including a mixture of harmonic-supported user equipments and harmonic-unsupported user equipments. One aspect of the present invention relates to a user equipment having a carrier aggregation function, comprising: a communication control unit configured to control radio communication with a base station; a capability management unit configured to manage a requirement on transmission and reception characteristics supported by the user equipment for each combination of carrier aggregation frequency bands; and a capability reporting unit configured to report the requirement on the transmission and reception characteristics supported by the user equipment as a capability to the base station.

Abstract: In CA performed using three or more frequency bands, whether or not a mobile station UE is capable of performing an inter-frequency measurement without a gap is properly determined. The mobile station UE according to the invention includes a transmission unit 11 configured to transmit “UE Capability” indicating a capability of the mobile station UE to a radio base station eNB. The transmission unit 11 is configured to notify frequency bands in which the mobile station UE is capable of performing an inter-frequency measurement without a gap for each “CA band combination” as the “UE Capability”.

Abstract: A mobile station UE according to the present invention includes a controller unit 22. When “1” is set in “R” in the “Activation/Deactivation MAC Control Element”, the controller unit 22 activates only an uplink in a Scell corresponding to “Ci” set to “1”, and deactivates only the uplink in a Scell corresponding to “Ci” set to “0”.