Abstract: A terminal is disclosed that includes a processor that includes, in capability information, a separation class indicating a frequency separation between a lower edge of a component carrier with a lowest frequency for supported intra-band non-contiguous carrier aggregation and an upper edge of a component carrier with a highest frequency for the supported intra-band non-contiguous carrier aggregation. The terminal further includes a transmitter that transmits the capability information to a base station, where the separation class is indicated by an index to identify a class of the frequency separation. In other aspects, a transmission method and a radio communication system are also disclosed.

Abstract: Provided is a power control technique for a user equipment that supports high transmission power. An aspect of the invention relates to user equipment that supports a first power class in a certain frequency band, the user equipment including a transceiver that transmits radio signals to and receives radio signals from a base station; and a transmission power controller that controls transmission power to the base station, wherein, upon accessing the base station in the frequency band provided with, as a default power class, a second power class that is lower than the first power class, the transmission power controller controls the transmission power in accordance with a regulation of the default power class, and the transmission power controller controls the transmission power so that the transmission power becomes less than or equal to maximum output power of the default power class.

Abstract: A technique is provided that is for efficiently avoiding interference that occurs due to simultaneous communication with different radio systems. An aspect of the present invention relates to user equipment including a cellular communication controller that controls first radio communication with a cellular system, and a different radio system communication controller that controls second radio communication with a different radio system other than the cellular system, wherein the cellular communication controller reports, to the cellular system, interference notice indicating interference between the first radio communication and the second radio communication, based on information obtained in the first radio communication.

Abstract: A terminal includes a transmitter that transmits, to a base station apparatus, UE capability including information indicating a supported frequency band and a power class at least defining spherical coverage in the frequency band; and a receiver that receives, from the base station apparatus, information on power control; wherein the transmitter further transmits, to the base station apparatus, an uplink transmission signal to which transmit power control based on at least one of the information on power control or the power class is applied.

Abstract: A terminal for communicating with a base station apparatus is disclosed, the terminal including a controller that sets maximum transmission power based on an Effective Isotropic Radiated Power (EIRP) of the terminal; and a transmitter that transmits an uplink signal based on the maximum transmission power. In other aspects, a communication method by a terminal for communicating with a base station apparatus is also disclosed.

Abstract: A terminal for communicating with a base station apparatus is disclosed, the terminal including a controller that sets maximum transmission power based on an Effective Isotropic Radiated Power (EIRP) of the terminal; and a transmitter that transmits an uplink signal based on the maximum transmission power. In other aspects, a communication method by a terminal for communicating with a base station apparatus is also disclosed.

Abstract: A terminal is disclosed that includes a processor that includes, in capability information, a separation class indicating a frequency separation between a lower edge of a component carrier with a lowest frequency for supported intra-band non-contiguous carrier aggregation and an upper edge of a component carrier with a highest frequency for the supported intra-band non-contiguous carrier aggregation. The terminal further includes a transmitter that transmits the capability information to a base station, where the separation class is indicated by an index to identify a class of the frequency separation. In other aspects, a transmission method and a radio communication system are also disclosed.

Abstract: There is provided a terminal including a processor that includes, in capability information, a frequency separation 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 station.

Abstract: User equipment communicates with a first base station apparatus included in a first radio communication system and a second base station apparatus included in a second radio communication system, and includes an interference notification generating part that generates an interference notification including information indicating that an device-internal interference at the user equipment is detected or that resolution of device-internal interference is detected; a sending/receiving part that sends the interference notification to the first base station apparatus or the second base station apparatus, and receives a response to the interference notification from the first base station apparatus or the second base station apparatus; and a switching part that switches an uplink transmission scheme based on the response of the interference notification.

Abstract: A technique is provided that is for efficiently avoiding interference that occurs due to simultaneous communication with different radio systems. An aspect of the present invention relates to user equipment including a cellular communication controller that controls first radio communication with a cellular system, and a different radio system communication controller that controls second radio communication with a different radio system other than the cellular system, wherein the cellular communication controller reports, to the cellular system, interference notice indicating interference between the first radio communication and the second radio communication, based on information obtained in the first radio communication.

Abstract: A first base station apparatus includes a transmitting unit that transmits, to a second base station apparatus among a plurality of base station apparatuses, information indicating a maximum transmit power of user equipment with respect to the first base station apparatus and the second base station apparatus, a receiving unit that receives, from the second base station apparatus, information for a request to configure the maximum transmit power, and a setting unit that transmits the information indicating the maximum transmit power to the user equipment.

Abstract: To provide a technique for suppressing interference caused by inter-modulation distortion in dual connectivity between a plurality of radio communication systems using different RATs. An aspect of the present invention relates to user equipment including an interference indication generator that generates an interference indication including interfered carrier information that indicates a serving carrier that receives intra-device interference; and a transmitter-receiver that transmits the interference indication to a base station.

Abstract: User equipment communicates with a first base station apparatus included in a first radio communication system and a second base station apparatus included in a second radio communication system, and includes an interference notification generating part that generates an interference notification including information indicating that an device-internal interference at the user equipment is detected or that resolution of device-internal interference is detected; a sending/receiving part that sends the interference notification to the first base station apparatus or the second base station apparatus, and receives a response to the interference notification from the first base station apparatus or the second base station apparatus; and a switching part that switches an uplink transmission scheme based on the response of the interference notification.

Abstract: A user equipment is disclosed including a controller that controls a radio communication with a base station; and a transmitter that reports, to the base station, interfered system information including information representing an interfered system that is interfered by multi-Radio Access Technology (RAT) dual connectivity. In other aspects, an interference coordination method is also disclosed.

Abstract: A terminal includes a transmitter that transmits, to a base station apparatus, UE capability including information indicating a supported frequency band and a power class at least defining spherical coverage in the frequency band; and a receiver that receives, from the base station apparatus, information on power control; wherein the transmitter further transmits, to the base station apparatus, an uplink transmission signal to which transmit power control based on at least one of the information on power control or the power class is applied.

Abstract: A user device for a radio communication system supports uplink carrier aggregation. The user device includes a transmitter that transmits an uplink signal to a base station by using a first component carrier and a second component carrier having a TTI length shorter than a TTI length of the first component carrier, and a calculator that calculates a lower limit and an upper limit of a maximum transmission power of the uplink signal according to predetermined formulas using one of a subframe of the first component carrier and a subframe of the second component carrier as a reference subframe.

Abstract: A user terminal according to one aspect of the present disclosure includes: a control section that determines a step size of a value of a Power Headroom (PH) per increase of an index related to the PH or a range of a value of the PH associated with the index based on a given condition; and a transmitting section that transmits a Power Headroom Report (PHR) including the index. According to one aspect of the present disclosure, it is possible to report an appropriate PH in future radio communication systems, too.

Abstract: There is provided a terminal including a processor that includes, in capability information, a frequency separation 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 station.

Abstract: One aspect of the present invention relates to user equipment having an uplink carrier aggregation function, comprising: a radio communication control unit configured to control radio communication with a base station; a radio positioning unit configured to perform a radio positioning function based on a radio signal received from a positioning system; and a radio positioning state reporting unit configured to report, when uplink carrier aggregation is configured, activation or deactivation of the radio positioning function to the base station.

Abstract: A terminal for communicating with a base station apparatus is disclosed, the terminal including a controller that sets maximum transmission power based on an Effective Isotropic Radiated Power (EIRP) of the terminal; and a transmitter that transmits an uplink signal based on the maximum transmission power. In other aspects, a communication method by a terminal for communicating with a base station apparatus is also disclosed.