Variable coherence adaptive antenna array
US11418240B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2018 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Dec 6, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0868
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A user equipment (UE) (200, 500, 1530) transmits data to a base station (100, 500, 1520) in a wireless communication network. The UE (200, 500, 1530) comprises multiple antenna ports, and selects a precoding matrix from a respective first, second, third, or fourth set of precoding matrices according to a number of spatial layers. The first, second, third, and fourth sets of precoding matrices are available for all coherence capabilities and are comprised within a larger set of precoding matrices. The larger set comprises precoding matrices that are not available for all coherence capabilities. The first, second, third, and fourth sets of precoding matrices correspond to one, two, three, or four spatial layers, respectively. The number of columns in the selected precoding matrix is equal to the number of spatial layers and each column comprises a single non-zero element and one or more zero elements. The UE (200, 500, 1530) transmits data on the number of spatial layers according to the selected precoding matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.