Methods and apparatus for codebook subset restriction for two-dimensional advanced antenna systems
US9438321B2 · kind B2 · utility
7Cited by
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25Claims
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Key dates
| Filing date | Jul 11, 2013 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Apr 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0481
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A user equipment (UE) in a wireless network having two-dimensional antenna systems performs a method of codebook sampling. The method includes receiving from an eNodeB (eNB) an indication of a restricted subset M of vertical precoding matrices, wherein M is less than a total number of vertical precoding matrices N in a codebook, the codebook comprising a plurality of vertical precoding matrices and horizontal precoding matrices. The method also includes feeding back vertical precoding matrix indicators (V-PMI) to the eNB based on the restricted subset of vertical precoding matrices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.