The goal of this paper is two-fold. First, to expand an opportunistic network coding protocol for wireless networks, called PlayNCool, in order to incorporate new mechanisms to improve performance in the presence of packet losses. In particular, exploiting additional helper nodes to improve the quality of each link and even across neighbouring links and using simulations to show that an additional reduction of packet transmission in the order of 40% is possible. Second, to advocate for the use of network coding (NC) jointly with software defined networking (SDN) providing an implementation of the expanded PlayNCool protocol using SDN. This implementation uses an architecture developed with OpenFlow switches and a Pox controller to periodically gather statistics related to packet losses and the number of packets coded, recoded and decoded on a per link basis in order to adapt the configuration for the PlayNCool protocol optimally. The measurements carried out were validated with theoretical and simulated results.
|I E E E V T S Vehicular Technology Conference. Proceedings
|Udgivet - 2017