| Publisher | Zhejiang University | ||
|---|---|---|---|
| Format | 316.1KB PDF | Date added | 25 Feb 2006 |
| Topics | Wireless LAN, Wi-Fi (802.11), Quality of Service | ||
| Downloads | 47 | ||
This paper introduces a video application-aware cross-layer framework for joint performance-energy optimization, considering the scenario of multiple users upstreaming real-time Motion JPEG2000 video streams to the access point of a WiFi wireless local area network and extends the PHY-MAC run-time cross-layer scheduling strategy that one introduced in to also consider congested network situations where video packets have to be dropped. The paper shows that an optimal solution at PHY-MAC level can be highly suboptimal at application level, and then shows that making the cross-layer framework application-aware through a prioritized dropping policy capitalizing on the inherent scalability of Motion JPEG2000 video streams leads to drastic average video quality improvements and inter-user quality variation reductions of as much as 10 dB PSNR.
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