Multi-path interests routing scheme for multi-path data transfer in Content Centric Networking

Content Centric Networking (CCN) is one of the most promising future network architectures. Current researches on CCN routing scheme mainly focus on finding the best single routing path and then transferring all the content chunks along this path. For an Interest packet who should have had opportunities to be routed along multiple paths to reach more repositories but only been routed along one single path due to the single path routing scheme, the problems of low utilization of the network resources and unbalance of the load of the faces and repositories are caused. This paper focuses on how to make best use of multiple paths to route the Interests, and further transfer different chunks of the content back along the paths. According to the different network-status parameters, a Multi-path Interests Routing (MIR) scheme is proposed for CCN routing, which is based on Analytical Hierarchy Process (AHP). AHP is a method for obtaining the optimized result of the Interest packets allocation. The simulation experiments have been performed to evaluate the proposed scheme in terms of a wide range of performance metrics. The results show that the proposed scheme significantly outperforms existing scheme.