To efficiently transmit a power headroom. An apparatus includes a receiver configured to receive first information and receive a physical downlink control channel, the first information including a resource configuration of one or more sounding reference signals, and a transmitter configured to transmit information indicating a first power headroom level for a physical uplink shared channel associated with a sounding reference signal resource index included in downlink control information carried on the downlink control channel, and transmit information indicating a second power headroom level for a physical uplink shared channel associated with a sounding reference signal resource index not included in the downlink control information carried on the downlink control channel.