Frequency orthogonalized MIMO channel sounding and feedback in a wireless home network
US9793965B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2016 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Nov 7, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0628
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A WAP including: a spatial mapper component, a partial sounding feedback expander circuit and a beamforming matrix calculator. The spatial mapper component spatially maps the transmission of a single MIMO sounding packet with either a single full spatial mapping matrix (SMM) or a set of “N” partial SMM responsive respectively to a full or composite sounding mode designation. The partial sounding feedback expander circuit in the composite sounding mode, expands partial sounding feedback received from a targeted station in response to the single MIMO sounding packet into a full sounding feedback. The beamforming matrix calculator calculates a full beamforming matrix for transmitting downlink communications to the targeted station from the full sounding feedback provided by either the partial sounding feedback expander circuit in the composite sounding mode, or the full sounding feedback received directly from the targeted station in the full sounding mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.