On Study Of Mobile Network For Random Network Coding

Network coding is first introduced by R. Ahlswede, N.Cai et al. One important advantage of network coding based multicast is that the upper bound of a multicast, i. e.multicast capacity can be achieved. In addition, network coding combine with many other methods that can bring some benefits in several ways, for example, resources consumption, load balancing, network manage and so on. So far, main researches are taken on multicast networks and main work of this paper is concentrated on multicast, and research of applying network coding in the non-multicast network should be pay more attention.Mobile network have characters of time-varying, unreliability and intermittent -connecting, so that applying the multi-path routing in the mobile networks lead to message disorder and message loss. In this paper, some key problems of several special topologies in Mobile network are investigated by theoretical analysis and simulation, and introduce a new multicast algorithm based on network coding. It is proved that with the same multi-path number and path message loss rate, the new algorithm has a better transmission performance than the traditional multi-path routing method in terms of message delivery rate.Moreover, the performance of both schemes were evaluated by simulation in terms of message delivery rate under the conditions of different multi-path numbers, link message loss rates and redundancy factors.The result validates the theory analysis and shows that the algorithm can efficiently improve the reliability and save the onboard communication resources as well as enhance the error control of multi-path routing with certain ranges of message loss.