Partial network coding for wireless opportunistic routing

In this paper, we present the PNCO, a partial network coding for multicast communications in wireless network under opportunistic routing. PNCO presents a low complexity algorithm for intra-flow network coding for wireless network. This metric breaks the whole file into blocks of K packets. It only randomly mixes packets of the current block then forwards them. As soon as the destination node decodes the block, it sends an ACK to the source to allow it to send the next block. When estimates the delivery probability on each link, we consider the excepted cost of each link (EC), which incorporates delay and loss ratio of each link. Our simulation results show that PNCO provides significantly higher throughput, compared to the transitional routing, by at most 20% to 30%. And simultaneously the delay is lower about 50% than conventional network coding.