Frequency domain channel state information (CSI) compression
US11515917B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2020 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Jan 18, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0029
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An approach is described that includes receiving a CSI report, where the CSI report includes a channel quality indicator (CQI), a rank indicator (RI), and a precoding matrix indicator (PMI). The approach further includes constructing a precoding matrix based on a linear combination of a plurality of mutually orthogonal digital Fourier transformation (DFT) spatial beams, and determining a number of bits for the PMI of the precoding matrix. The approach also includes determining a space frequency matrix based, at least in part, on the number of bits for the PMI and the precoding matrix, and compressing the space frequency matrix. Finally, the approach includes determining a compressed PMI based, at least in part, on the space frequency matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.