Communication control method, base station apparatus and mobile station apparatus
US8873666B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2011 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Aug 12, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0639
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In order to suppress deterioration of the throughput performance of the whole system in the MIMO system performing MIMO transmission, the present invention is characterized in that in a codebook in which there are defined a plurality of precoding weights and a plurality of PMIs (Precoding Matrix Indicators) assigned to the precoding weights, bit information of the PMIs assigned to the precoding weights is adjusted in such a manner as to suppress an effect of feedback error from a mobile station apparatus. The bit information of the PMIs assigned to the precoding weights is adjusted in such a manner as to suppress an effect of a transmission beam formed with a PMI in which feedback error is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.