A Deterministic Data Transmission Approach with Network Coding Under Unknown Network Topology
Wang Wei-ping · Dianzi xuebao · 2009
Aiming at the single-source multicast connection of unknown network topology,in which there is at least a feedback path from each sink node to source node,this paper proposes a network coding construction of deterministic network coding data transmission to implement multicast connection.The approach divides multicast connection process into trial multicast phase and data transmission phase.In trial multicast phase,the source node,as central control node,multicasts repeatedly trial packets into network by random network coding strategy,and each sink node transmits feedback information to the source node.Therefore it is possible to measure the multicast capacity of single-source multicast network and determine the coding vector of each channel respectively.In data transmission phase,by virtue of the parameters obtained in the former phase,data can be transmitted by deterministic network coding transmission strategy.Theoretical analysis shows that the proposed approach is feasible and simulation results show that it is also effective.