A Reliable Multicast for MANETs Based on Opportunistic Routing

Opportunistic routing is a recent routing paradigm that achieves high throughput in the face of universally lossy wireless links in mobile ad hoc networks, however, how to applying this novel technique to reliable wireless multicast is a challenging task. Due to feedback explosion, most existing wireless network multicast protocols don´t guarantee the reliable delivery. In this paper, we propose a novel reliable multicast protocol based on the opportunistic routing. Additionally, we also provide an ETX (expected number of transmissions) based cost metric formula of the multicast sub-group. Simulation reveals that the performance of the novel multicast routing protocol outperforms the conventional multicast routing protocol in ad hoc wireless networks.