Physical layer design for uplink (UL) multiuser multiple-input, multiple-output (MU-MIMO) in wireless local area network (WLAN) systems
US9439161B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jul 15, 2014 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Nov 12, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Certain aspects of the present disclosure provide methods and apparatus for uplink (UL) multiuser multiple-input, multiple-output (MU-MIMO) transmissions in a High Efficiency WLAN (HEW) system. One example method generally includes generating a packet having a preamble portion and transmitting the packet. The preamble portion typically includes a long training field (LTF); a first signal (SIG) field subsequent to the LTF; one or more other LTFs located subsequent to the first SIG field; and at least one second SIG field, wherein all SIG fields in the preamble portion, other than the first SIG field, are subsequent to the one or more other LTFs. Another example method generally includes receiving, from an apparatus, a packet having a preamble portion comprising tone-interleaved LTFs; and performing frequency offset adjustment on the packet based on the tone-interleaved LTFs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.