A method comprising: receiving first scheduling information for a first uplink transmission on a first serving cell at a first time instant, wherein the first scheduling information comprises a first transmission period and a first numerology; receiving second scheduling information for a second uplink transmission on a second serving cell at a second time instant, wherein the second scheduling information comprises a second transmission period and a second numerology, and the first transmission period at least partially overlaps the second transmission period; determining a first transmission power for the first uplink transmission based at least partly on the first scheduling information; transmitting a first portion of the first uplink transmission with the first transmission power during a first time period in which the first transmission period does not overlap with the second transmission period, wherein a first total transmission power during the first time period equals the first transmission power; and transmitting a second portion of the first uplink transmission during a second time period in which the first transmission period overlaps with the second transmission period, wherein: a second total transmission power during the second time period is greater than or equal to the first total transmission power; and in response to the second total transmission power being equal to the first total transmission power, the second portion of the first uplink transmission is transmitted with a transmission power less than the first transmission power; wherein a first demodulation reference signal is transmitted with the first uplink transmission, and, in response to the second total transmission power being greater than the first total transmission power, the first demodulation reference signal is transmitted with the first portion of the first uplink transmission and a second demodulation reference signal is transmitted with the second portion of the first uplink transmission. receiving first scheduling information for a first uplink transmission on a first serving cell at a first time instant, wherein the first scheduling information comprises a first transmission period and a first numerology; receiving second scheduling information for a second uplink transmission on a second serving cell at a second time instant, wherein the second scheduling information comprises a second transmission period and a second numerology, and the first transmission period at least partially overlaps the second transmission period; determining a first transmission power for the first uplink transmission based at least partly on the first scheduling information; transmitting a first portion of the first uplink transmission with the first transmission power during a first time period in which the first transmission period does not overlap with the second transmission period, wherein a first total transmission power during the first time period equals the first transmission power; and transmitting a second portion of the first uplink transmission during a second time period in which the first transmission period overlaps with the second transmission period, wherein: a second total transmission power during the second time period is greater than or equal to the first total transmission power; and in response to the second total transmission power being equal to the first total transmission power, the second portion of the first uplink transmission is transmitted with a transmission power less than the first transmission power; a second total transmission power during the second time period is greater than or equal to the first total transmission power; and in response to the second total transmission power being equal to the first total transmission power, the second portion of the first uplink transmission is transmitted with a transmission power less than the first transmission power; wherein a first demodulation reference signal is transmitted with the first uplink transmission, and, in response to the second total transmission power being greater than the first total transmission power, the first demodulation reference signal is transmitted with the first portion of the first uplink transmission and a second demodulation reference signal is transmitted with the second portion of the first uplink transmission.