Multiple tree video multicast over mobile ad hoc networks

Recently, video multicast over wireless medium has gained increasing popularity in a wide range of applications, such as video-on-demand and group video conferencing. As mobile ad hoc networks emerge as a promising solution for future ubiquitous communication, it is a timely research topic to propose a reliable video multicast framework over these networks. In this paper we tackle this issue by using multiple tree multicast routing protocol. Specifically, we introduce an extension to the multicast ad hoc on-demand distance vector (MAODV) to construct two optimally-disjoint trees for a multicast group in a single routine; it is called multiple tree multicast ad hoc on-demand distance vector (MT-MAODV) routing protocol. Besides, the video is coded into independent video streams using the multiple description coding (MDC) scheme in order to distribute the encoded video independently between these disjoint trees. Simulation study shows that our proposed routing protocol demonstrates video multicast with better quality than conventional model using single tree.