| 摘要 |
An uplink power control device and method, which uses power control technology for E-DCH channel in HSPA+ system, wherein, the user equipment reads TPC from Node B in the latest several time slots, the current transmission power of uplink channels and the modulation mode of E-DPDCH channel in next TTI; then selects a method for power control according to the modulation method of E-DPDCH channel in next TTI; calculates the transmission power of uplink channel used in next TTI according to the TPC received in the latest several time slots, the current transmission power, requirements for maximal transmission power and minimal transmission power, power control adjustment step and ² factor corresponding to DPCCH of uplink channel; finally keeps the transmission powers of all or some of uplink channels constant in the whole TTI of E-DPDCH. The device and method can decrease crosstalk between I branch and Q branch signals. |
