Terminal apparatus and communication method for setting appropriate uplink transmit power for an uplink signal based on detecing a DCI
A terminal apparatus for communication with a base station apparatus includes reception circuitry and a transmission circuitry. The reception circuitry receives a higher layer signal and sets first and second parameter sets for an uplink power control. The transmission circuitry transmits an uplink signal. If a cell of a first base station and a cell of a second base station are configured, the transmission circuitry sets a transmit power for the uplink signal based on the first parameter set upon detecting a DCI format from the first base station and sets transmit power based on the second parameter set upon detecting a DCI format from the second base station.
1. A terminal apparatus comprising:
reception circuitry configured to receive, via a higher layer signal, a first parameter set for uplink power control and a second parameter set for the uplink power control; and
transmission circuitry configured to transmit an uplink signal including at least one of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), and a sounding reference signal (SRS); wherein,
in a case that a first cell of a first base station and a second cell of a second base station are configured, the transmission circuitry is further configured to:
set a transmit power for the uplink signal based on the first parameter set, in a first case that the reception circuitry receives a first downlink control information (DCI) format from the first base station; and
set the transmit power based on the second parameter set, in a second case that the reception circuitry receives a second DCI format from the second base station, and
each of the first parameter set and the second parameter set includes at least a first type parameter for the PUSCH, a second type parameter for the PUCCH, and a third type parameter for the SRS.
2. The terminal apparatus according to claim 1 , wherein
each of the first parameter set and the second parameter set includes at least a nominal power for the uplink signal.
3. The terminal apparatus according to claim 1 , wherein
the transmission circuitry is configured to set the transmit power based further on a first pathloss in the first case, the first pathloss determined from a first received power of a first measurement target from the first base station, and
set the transmit power based further on a second pathloss in the second case, the second pathloss determined from a second received power of a second measurement target from the second base station.
4. A communication method for a terminal apparatus comprising:
receiving, via a higher layer signal, a first parameter set for uplink power control and a second parameter set for the uplink power control;
transmitting an uplink signal including at least one of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), and a sounding reference signal (SRS); and
in a case that a first cell of a first base station and a second cell of a second base station are configured,
setting a transmit power for the uplink signal based on the first parameter set, in a first case of receiving a first downlink control information (DCI) format from the first base station, and
setting the transmit power based on the second parameter set, in a second case of receiving a second DCI format from the second base station,
wherein each of the first parameter set and the second parameter set includes at least a first type parameter for the PUSCH, a second type parameter for the PUCCH, and a third type parameter for the SRS.