Cross layer image optimization (CLIO) for wireless video transmission over 802.11ad multi-gigabit channels

摘要

Wireless display is known to be the future of display technology where a world full of inexpensive displays is used for streaming various multimedia applications. Due to the stringent requirements for high quality video transmission with low latency, a cross layer approach is needed to adapt to fast changes of the wireless link. Here, we consider cross layer approaches over IEEE 802.11ad multi-gigabit wireless networks to increase QoS guarantee for real time multimedia applications. This includes dynamic layering or partitioning on top of IEEE 802.11ad to switch among a set of procedures/parameters in the transmitter and receiver, including error correction technique, compression, or packetization on a packet by packet basis. We propose a layered-based compression designed for an unequal error protection for treating ordered bit streams of different layers differently. Dynamic importance aware tagging for packets is proposed as the third method. IEEE 802.11ad MAC and transport layer protocols and signaling are modified to adapt for importance levels and corresponding information exchange.