Patent ID: 9585102
Date: 2017-02-28
CPC Classifications: H04L,H04W

Claim:
1. A method of a User Equipment (UE) for controlling an uplink transmission power, the method comprising: setting an uplink maximum transmission power for each of a plurality of cell groups including one or more serving cells in such a way that a total sum of the uplink maximum transmission power for each of the plurality of cell groups does not exceed a total maximum transmission power of the UE; and allocating a transmission power for an uplink channel and an uplink signal based on at least one of: the uplink maximum transmission power, a total sum of the transmission power of one or more uplink channels and an uplink signal transmitted in each of the plurality of cell groups, and the total maximum transmission power of the UE, wherein the uplink channel includes a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH), and the uplink signal includes a Sounding Reference Signal (SRS); wherein, when the total sum of the transmission power of the uplink channel and the uplink signal in each of the plurality of cell groups does not exceed the uplink maximum transmission power for a corresponding cell group, a transmission power of the SRS is allocated independently in each of the plurality of cell groups; and wherein, when the total sum of the uplink channel and the uplink signal in a cell group from among the plurality of cell groups exceeds the uplink maximum transmission power of the cell group, a transmission power of the PUCCH and the PUSCH is allocated preferentially rather than a transmission power of the SRS.