Base station, user equipment, and method for determining precoding matrix
US10256886B2 · kind B2 · utility
2Cited by
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17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2015 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Jun 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03891
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A base station that communicates with a user equipment using multiple antenna ports includes an uplink channel estimation unit that estimates uplink channel states, a downlink channel estimation unit that estimates downlink channel states based on the estimated uplink channel states and channel reciprocity of uplink and downlink, a receiver unit that receives from the user equipment CSI feedback information, and a precoder generating unit that determines a precoding matrix of downlink based on Channel State Information (CSI) indicating the estimated downlink channel states and on the CSI feedback information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.