Two power control loops for antenna switching transmit diversity
US9357511B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2008 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Feb 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Two power control loops for antenna switching transmit diversity are realized by a user terminal including two antennas (110, 120), one power amplifier (140) for amplifying the signals to be transmitted from each of the antennas, and a switch (130) switching the transmission power of the power amplifier from one antenna to the other antenna. Accordingly, the user terminal is enabled to alternately transmit data packets, with its two antennas. A closed loop power control mechanism in the user terminal is adapted to update, on receipt of a transmission power control command from a base station, the transmission power relative to the level of two slots previously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.