Mobility

A Novel Cross-Layer Design Using Comb-Shaped Quadratic Packet Mapping for Video Delivery Over 802.11e Wireless Ad Hoc Networks

Date Added: Feb 2012
Format: PDF

Cross-layer design is a promising direction and challenging issue for quality delivery of multimedia over wireless networks. This paper proposes a cross-layer design which can substantially enhance the transmission quality of video streaming over 802.11e ad hoc networks. The proposed design consists of two parts: a Dispersive Video Frame Importance (DVFI) scheme in the application layer that can correctly label the priorities of video packets, and a Comb-shaped Quadratic Mapping (CQM) algorithm in the Medium Access Control (MAC) layer that can provide a better congestion control mechanism among the multiple Access Category (AC) queues than 802.11e Enhanced Distributed Channel Access (EDCA) for wireless video delivery.