Mobile Satellite Network Virtual Mapping Algorithm Based on Node Risk

On the basis of the existing virtual network mapping algorithm, for the problems of mobile satellite virtual network mapping, such as greater network overhead and so on, proposed a mobile satellite network virtual mapping algorithm based on node risk. The algorithm judge the nodes' risk parameter, considered the threshold number of virtual nodes mapping and satellite nodes acceptance threshold, as far as possible, mapping to lower risk parameter satellite nodes, the simulation shows that compared with VNA algorithms, virtual network request accept rate, the satellite resource utilization, network overhead three have a significant improvement.