A directional opportunistic DTN routing based on utility estimation in cyberspace

The constant copies were injected into the delay tolerant networks (DTN) initially by Multi-copies routings which got the higher connection probability comparing with traditional flooding method. In order to reduce the influence of the redundancy copies and utility in cyberspace environment, we proposed the scheme with the directional opportunistic routing based on utility estimation (ESOR) to make adaptive forwarding decision with the optimal copies. ESOR used the different network metrics to compute the maximum utility value iteratively and get the optimal numbers of message copies. We impacted the algorithm on the ONE, the results showed that the proposed scheme compared with other controlled flooding routings made a better performance.