A user equipment comprising: a configuration unit adapted to configure a first cell group, CG, and a second CG, the first CG being a secondary CG, SCG, and the second CG being a master CG, MCG; and a transmission unit adapted to transmit an uplink physical channel on a serving cell belonging to the first CG in a subframe i1, and further adapted to transmit a physical random access channel, PRACH, on a serving cell belonging to the second CG, wherein a first transmission of the uplink physical channel in the subframe i1 overlaps in time with a subframe i2 and a subframe i2-1 of the second CG, in a case that a total transmit power across all serving cells belonging to the first CG exceeds a value of a first parameter, the user equipment is adapted to scale down a transmit power of the first transmission, the first parameter is given based on a second parameter associated with the subframe i2 and on a third parameter associated with the subframe i2-1, in a case that the user equipment has a PRACH transmission in the subframe i2, a value of the second parameter is a value of a transmit power of a PRACH transmission, otherwise, the value of the second parameter is equal to 0 and a start of the subframe i2 is later than a start of the subframe i1, wherein the first transmission in a subframe i1 overlaps in time with the subframe i2-1, wherein a value of the first parameter is determined such that (i) the first parameter is less than or equal to a difference between a maximum output power of the user equipment and a value of the second parameter, and (ii) the value of the first parameter is less than or equal to a difference between the maximum output power and a value of the third parameter. a configuration unit adapted to configure a first cell group, CG, and a second CG, the first CG being a secondary CG, SCG, and the second CG being a master CG, MCG; and a transmission unit adapted to transmit an uplink physical channel on a serving cell belonging to the first CG in a subframe i1, and further adapted to transmit a physical random access channel, PRACH, on a serving cell belonging to the second CG, wherein a first transmission of the uplink physical channel in the subframe i1 overlaps in time with a subframe i2 and a subframe i2-1 of the second CG, in a case that a total transmit power across all serving cells belonging to the first CG exceeds a value of a first parameter, the user equipment is adapted to scale down a transmit power of the first transmission, the first parameter is given based on a second parameter associated with the subframe i2 and on a third parameter associated with the subframe i2-1, in a case that the user equipment has a PRACH transmission in the subframe i2, a value of the second parameter is a value of a transmit power of a PRACH transmission, otherwise, the value of the second parameter is equal to 0 and a start of the subframe i2 is later than a start of the subframe i1, wherein the first transmission in a subframe i1 overlaps in time with the subframe i2-1, wherein a value of the first parameter is determined such that (i) the first parameter is less than or equal to a difference between a maximum output power of the user equipment and a value of the second parameter, and (ii) the value of the first parameter is less than or equal to a difference between the maximum output power and a value of the third parameter.