MOBILE STATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND INTEGRATED CIRCUIT

摘要

In a system including at least one base station device, the base station device efficiently controls uplink signals. A mobile station device includes a path loss calculation unit 4051 configured to calculate path losses, each based on one of a plurality of types of reference signals received by a reception processing unit 401, a transmit power setting unit 4053 configured to set a desired transmit power for an uplink signal using the path losses calculated by the path loss calculation unit 4051, and a power headroom control unit 4055 configured to generate a power headroom using the desired transmit power set by the transmit power setting unit 4053, the power headroom being information concerning transmit power to spare, and configured to control transmission of the power headroom. The power headroom control unit 4055 independently controls a power headroom transmission process that uses each of the path losses calculated based on the plurality of types of reference signals, using an independent parameter for each power headroom transmission process.

主权项

1. A mobile station device for communicating with at least one base station device, comprising:
a first reception processing unit configured to receive a signal from the base station device; a path loss calculation unit configured to calculate path losses, each based on one of a plurality of types of reference signals received by the first reception processing unit; a transmit power setting unit configured to set a desired transmit power for an uplink signal using the path losses calculated by the path loss calculation unit; and a power headroom control unit configured to generate a power headroom using the desired transmit power set by the transmit power setting unit, the power headroom being information concerning transmit power to spare, and configured to control transmission of the power headroom, wherein the power headroom control unit independently controls a power headroom transmission process that uses each of the path losses calculated based on the plurality of types of reference signals, using an independent parameter for each power headroom transmission process.