Cross-layer rate adaptation mechanism for WLAN
US7423970B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Oct 14, 2005 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Mar 4, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0003
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A cross-layer rate adaptation mechanism for wireless local area network (WLAN) can obtain the channel state by calculating the Eb/N0 ratio of ACK frame transmitted from the receiver side. The mechanism determines the transmission rate of the next frame by referring to a predefined reduced mode table. When receiving an ACK frame fails, the mechanism can automatically lower the transmitting rate of the next transmission. Therefore, the method can reduce the damage to the system when ACK frame failure happens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.