An efficient content placement scheme based on normalized node degree in content centric networking
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An efficient content placement scheme based on normalized node degree in content centric networking Sumit Kumar1 • Rajeev Tiwari1 Received: 27 February 2020 / Revised: 10 September 2020 / Accepted: 12 September 2020 Ó Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Content-centric networking (CCN) becomes an imminent Internet architecture that emphasizes the data-centric approach for information retrieval instead of searching for the hosts in the network. CCN offers data (content) caching and its distribution capabilities to reduce average latency, the load of data servers, and improve network bandwidth utilization during content delivery. In this direction, the performance of node degree centrality and distance-based autonomous caching strategies have been investigated. Then, a novel content caching strategy called content placement based on normalized node degree and distance (CPNDD) is proposed. The CPNDD scheme considers content provider distance and node degree centrality parameters together to select the optimal cache locations for comprehensive utilization of the available caching capacities and a further reduction in average latency during content retrieval. The weights for these caching parameters have been determined via widespread simulations on the Abilene networks. The proposed caching scheme is implemented and tested in the simulated environment of ndnSIM and compared with peer competing schemes in CCN. The execution outcomes are examined for different caching capacities (50 and 100), Zipf popularity skewness factors (0.7 and 1.0) and request rates (50/s and 100/s). The simulation executions illustrate that CPNDD caching strategy escalates the cache hit probability and hop-reduction ratio up-to 8% and 9% as compared to existing schemes. Hence, the proposed content placement scheme improves the performance of CCN networks considerably and makes it suitable for the applications of Industry 4.0. Keywords CCN Hit ratio Network performance Node degree
1 Introduction Various new Internet architectures have been designed recently to address the growing needs of modern networkbased applications and the majority of these projects have a common paradigm-shift of concentration on effective content delivery instead of traditional host-oriented data exploration from IP-based Internet. The traditional hostcentric approach suffers from the high probability of network congestions, delay, and server load during content retrieval. Various mechanisms are suggested to increase the & Rajeev Tiwari [email protected] Sumit Kumar [email protected] 1
School of Computer Science, University of Petroleum and Energy studies, Dehradun, India
performance of IP-based network systems [1–3]. Although these mechanisms provide caching efficiency [2, 3], the schemes work in end-to-end systems only and do not leverage the capabilities of network routers. Several load balancing and hybrid [4, 5], are also proposed for IP-based Internet a
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