Techniques for multi-user MIMO sounding in wireless networks
US8976877B2 · kind B2 · utility
10Cited by
0References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2010 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Sep 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An embodiment of the present invention provides an apparatus, comprising a transceiver operable as an access point and capable of communicating in a wireless network, the AP adapted to perform a down link multi user-multiple input multiple output (DL MU-MIMO) transmission and further adapted to transmit a null data packet (NDP) to sound channels between intended recipient wireless stations (STAs), and wherein following a DL MU-MIMO transmission of the NDP, the AP polls each of the STAs in turn for channel state information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.