Base station apparatus, mobile station apparatus and transmission power control method
US8787261B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2010 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Apr 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0652
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
To suppress deterioration of throughput characteristics in the entire system even when a plurality of transmission antennas is placed in an indoor environment, a base station apparatus (eNode B) is provided with a power control matrix generating section (508b) that generates a power control matrix (Sx) reflecting average reception power of each of transmission signals from a plurality of transmission antennas (TX#1 to TX#NTX), a codebook update section (508c) that updates a codebook which beforehand defines a plurality of precoding weights corresponding to the power control matrix (Sx), a precoding weight selecting section (508d) that selects precoding weights that maximize throughput or reception SINR obtained after combining the transmission signals from the updated codebook, and a precoding multiplying section (transmission power control section) (507) that controls transmission power of each of the transmission signals corresponding to the selected precoding weights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.