Composite sounding for MIMO beamforming in a wireless home network
US9490882B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2015 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Jun 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0628
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wireless access point including: a sounding mode module, a sounding matrix generator, a sounding aggregator, and a beamforming expansion module. The sounding mode module determines whether a number of communication streams supported by the WAP matches the number of streams contained in a sounding response from a station, and initiates a composite set of an integer “N” soundings when those capabilities do not match. The sounding matrix generator generates “N” linearly independent spatial mapping matrices each associated with a corresponding one of the set of composite soundings. The sounding aggregator aggregates a plurality of partial beamforming matrices received from the targeted station node in response to the composite soundings. The beamforming expansion module expands the aggregated beamforming matrices into a full beamforming matrix for spatially mapping downlink communications between the WAP and the targeted station node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.