Network coding-aware multipath routing in multi-hop wireless networks

This paper proposes a network coding-aware multi-path routing (CAMP) protocol, which forwards packets over multiple paths dynamically based on path reliability and coding opportunity. CAMP employs a route discovery mechanism which returns to the source multiple paths along with ETX (expected transmission count) of all links on each path. With its unique forwarding mechanism, CAMP splits the traffic among multiple paths and actively creates, while not merely waiting for, the coding opportunity by switching its path to maximize the switching gain and thus improves the network throughput. The experimental results demonstrate that CAMP can achieve much higher throughput than peer schemes for delivering packets in wireless networks. © by Institute of Software, the Chinese Academy of Sciences. All rights reserved.