Patent ID: 8233419

Claim:
An uplink power control method in a High Speed Packet Access Evolution system, comprising: (1) reading, with User Equipment, a modulation scheme of an Enhanced Dedicated Physical Data Channel in a Transmission Time Interval; (2) selecting, with the User Equipment a method for power control for data transmission according to the modulation scheme of Enhanced Dedicated Physical Data Channel, wherein if the modulation scheme is Binary Phase Shift Keying, the method proceeds to step ( 3 ); otherwise, if the modulation scheme is 4 Pulse-Amplitude Modulation, 8 Pulse-Amplitude Modulation or higher order modulation, the method proceeds to step ( 4 ); (3) selecting, with the User Equipment, a power control algorithm in response to determining a 3GPP version supported by the User Equipment, wherein if the User Equipment supports 3GPP, supports High Speed Uplink Packet Access (“HSUPA”), and supports one or more of 16-order Quadrature Amplitude Modulation (“16QAM”), 32QAM, and 64QAM, the method proceeds to step ( 4 ); otherwise, transmission power is controlled according to the uplink power control method specified in the TS25.214 of 3GPP Release 99/5/6; (4) keeping, by way of the User Equipment, the transmission powers of one or more uplink channels in whole Transmission Time Interval of Enhanced Dedicated Physical Data Channel constant.