Network-adaptive high definition MPEG-2 streaming over IEEE 802.11a WLAN using frame-based prioritized packetization
Sanghoon Park, Seung-Joo Lee, JongWon Kim · 2005
In this paper, we propose a practical implementation of network-adaptive HD (high definition) MPEG-2 streaming using frame-based prioritized packetization over the IEEE 802.11a WLAN (wireless local area network). The proposed adaptive streaming system nicely provides frame-based prioritized packetization by developing a real-time MPEG-2 TS (transport stream) parsing tool. It then dynamically performs priority-based droppings of packets according to the network status observed by end-to-end monitoring. The implemented system thus can mitigate the long-term fluctuations of time-varying channel only with negligible delays. Evaluation results over an IEEE 802.11a WLAN testbed are provided to verify the intended QoS adaptation capability.