User equipment apparatus and method for feeding back channel state information in a wireless communication system
US8811520B2 · kind B2 · utility
25Cited by
0References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2011 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Oct 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/21
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A UE apparatus and method for feeding back Channel State Information (CSI) in a wireless communication system are disclosed. The UE apparatus includes a processor for determining a Rank Indicator (RI) for a predefined frequency band and selecting an index of a Precoding Matrix Indicator (PMI) corresponding to the determined RI from a codebook set used for a transmission on the predefined frequency band, and a transmission antenna for transmitting the RI and the index of the PMI to a Base Station (BS). The RI and the index of the PMI are jointly encoded prior to the transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.