Method and apparatus for channel state information based on antenna mapping and subsampling
US9537552B2 · kind B2 · utility
13Cited by
0References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2015 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Sep 10, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/005
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Non-zero power channel state information reference signals (CSI-RS) are transmitted only on a subsampled pattern of antennas within an antenna array. Based on the transmitted CSI-RS, channel state information is determined for all antennas within the antenna array by, for example, precoder matrix indicator (PMI) interpolation or channel quality indicator (CQI) compensation. The determination of CSI for all antennas within the antenna array may be made by a user equipment receiving the subsampled CSI-RS or a base station transmitting the subsampled CSI-RS.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.