MOBILE STATION, COMMUNICATION SYSTEM, COMMUNICATION METHOD AND INTEGRATED CIRCUIT

摘要

In order to enable the transmission of uplink signals to be efficiently controlled, this communication system is provided with: a transmission power setting unit that sets the transmission power of a Physical Uplink Control Channel (PUCCH) by using any one path loss among a plurality of path losses calculated on the basis of a first reference signal and a second reference signal, and sets the transmission power of a Physical Uplink Shared Channel (PUSCH) by using any one path loss; a power headroom generating unit that generates a power headroom report of a first type for the transmission of the PUSCH; and a power headroom control unit that controls the power headroom reporting process. The power headroom control unit determines that the power headroom reporting process is to start if the path loss used to set the transmission power of the PUSCH has been reset, and does not determine that the power headroom reporting process is to start if the path loss used for setting the transmission power of the PUCCH has been reset.