Link adaptation in wireless networks for throughput maximization under retransmissions
US7715469B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 9, 2008 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Dec 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0021
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention implements a method and system for dynamically adapting the modulation and coding scheme for radio links in a wireless communications network based on a retransmission environment model in order to maximize throughput and most efficiently allocate bandwidth resources. The present invention encompasses a refined calculus and methodology for deriving the link adaptation thresholds in a retransmission environment using a complex model and analysis of the retransmission environment. The present invention holds particular application for wireless data communications as opposed to real time data services because it is based on a retransmission model applicable primarily for data services. A critical component of this new link adaptation system is a “no transmission” cutoff mode that is selected for SIR below a base threshold value. This new mode prevents system instability and misallocation of bandwidth in a wireless communication system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.