Method and device for controlling transmission power in uplink transmission

摘要

A user equipment in wireless communication system is provided. The user equipment includes an antenna unit including a plurality of antennas, a control unit for grouping the plurality of antennas into a predetermined number of antenna groups and controlling separately transmission power of each of the predetermined number of antenna groups, and a transmitting unit, connected to the control unit, for transmitting at least one of data and control information to a base station via at least one of the predetermined number of antenna groups.

主权项

1. A user equipment for supporting N component carriers through carrier aggregation, wherein N is larger than 1, the user equipment comprising:
a processor configured to determine a maximum transmission power PMAX, PUCCH of a Physical Uplink Control Channel (PUCCH) and a maximum transmission power PMAX, PUSCH of a Physical Uplink Shared Channel (PUSCH) for a component carrier x among the N component carriers; and a radio frequency (RF) unit coupled to the processor, the RF unit configured to transmit the PUCCH and the PUSCH simultaneously on the carrier x, wherein the RF unit is further configured to receive, from a base station, control information associated with respective maximum allowed powers for the N component carriers, wherein the maximum transmission powers PMAX, PUCCH and PMAX, PUSCH for the component carrier x are determined using a maximum allowed power PMAX, x for the component carrier x among the respective allowed maximum powers for the N component carriers, and wherein the maximum transmission power PMAX,PUSCH is set to be ‘PMAX, PUCCH-PPUCCH’, where PPUCCH is a transmission power of the PUCCH.