Extension mode for wireless lans complying with short interframe space requirement
US7239648B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2002 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Nov 16, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus enables advanced signal processing in a wireless local area network (WLAN). First and second WLAN transceivers are provided with advanced signal processing capabilities. A maximum interframe period between data and an acknowledgement is required by the WLAN for compatibility. A duration of the interframe period is shorter than a duration that is required to perform the advanced signal processing. The first WLAN transceiver transmits a header and data. A first data field in the header is specified that enables the advanced signal processing. A second data field is specified that defines a data time period and an extension time period. The first WLAN transceiver transmits data during the data time period and dummy data during the extension time period. The second WLAN transceiver receives the header and initiates receiver processing during the extension time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.