Coefficient determination for measurement report feedback in multi-layer beamformed communications
US11509367B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2019 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Dec 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/06952
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and devices for wireless communications are described that provide for channel state information (CSI) feedback for multiple discrete Fourier transform (DFT) beams on multiple transmission layers. A user equipment (UE) may report a total number of non-zero power DFT beams across all of the transmission layers. The UE may be configured with a total number of leading beams (Ktotal) across all of the transmission layers for which to provide high quantization feedback. When the total number of non-zero DFT beams across all the transmission layers exceeds the configured total number of leading beams across all the transmission layers, the UE may report high-resolution quantization feedback for Ktotal non-zero power precoding coefficients having the highest amplitude coefficients, and may report low-resolution quantization feedback for the remaining non-zero power precoding coefficients. A base station may receive the CSI feedback to determine a precoding matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.