Energy-efficient ICN routing mechanism with QoS support

Information-Centric Networking (ICN) brings a promising networking paradigm which changes host-centric communication mode, and its routing decision depends on the unknown and named content item rather than the known IP address. In this paper, we propose a novel Energy-efficient Quality of Service (QoS) Routing mechanism for ICN (EQRI). Firstly, we evaluate the suitability of link state to user's QoS requirements by Cauchy distribution model and formulate the energy efficiency of link by monitoring the corresponding traffic. Secondly, we design a priority determination strategy based on QoS and energy efficiency, a color management strategy to assign color for outgoing interface, and a backtracking strategy to cope with the failed Interest packet. Thirdly, we propose a link selection algorithm based on color management, priority determination and backtracking strategy. Finally, we devise an ICN routing mechanism which consists of Interest packet routing and Data packet routing. The experimental results show that EQRI not only retrieves the content effectively but also outperforms existent mechanisms.