Terminal apparatus, base station apparatus, and method for terminal apparatus which can set appropriate uplink transmission power

A base station apparatus comprising:

• a transmitter that:
• transmits a higher layer signal including two or more uplink power control configurations for a serving cell, the two or more uplink power control configurations being used for an uplink power control for a physical uplink shared channel, and
• transmits a physical downlink control channel including a downlink control information for scheduling the physical uplink shared channel, the downlink control information having a first field, a first value of the first field identifying a first uplink power control configuration of the two or more uplink power control configurations;
• and
• a receiver that receives the physical uplink shared channel transmitted at a transmit power set by a terminal apparatus based on the first uplink power control configuration identified by the first value, wherein
• each of the two or more uplink power control configurations comprises a cell-specific configuration and a terminal-specific configuration, and
• each of the two or more uplink power control configurations includes:
• a nominal power value,
• a pathloss compensation coefficient,
• a pathloss reference resource associated with a channel state information reference signal, and
• a power adjustment value.

A method for a terminal apparatus, comprising

• receiving a higher layer signal including two or more uplink power control configurations for a serving cell, the two or more uplink power control configurations being used for an uplink power control for a physical uplink shared channel, and
• receiving a physical downlink control channel including a downlink control information for scheduling the physical uplink shared channel, the downlink control information having a first field, a first value of the first field identifying a first uplink power control configuration of the two or more uplink power control configurations;
• and
• setting a transmit power for the physical uplink shared channel based on the first uplink power control configuration identified by the first value, wherein
• each of the two or more uplink power control configurations comprises a cell-specific configuration and a terminal-specific configuration, and
• each of the two or more uplink power control configurations includes:
• a nominal power value,
• a pathloss compensation coefficient,
• a pathloss reference resource associated with a channel state information reference signal, and
• a power adjustment value.