Uplink power control device and method
US8233419B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2007 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Mar 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/286
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
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 β 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.