inis 22(30): e5

Research Article

An Efficient Traffic-aware Caching Mechanism For Information-centric Wireless Sensor Networks

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  • @ARTICLE{10.4108/eetinis.v9i30.561,
        author={Ngoc-Thanh Dinh},
        title={An Efficient Traffic-aware Caching Mechanism For Information-centric Wireless Sensor Networks},
        journal={EAI Endorsed Transactions on Industrial Networks and Intelligent Systems},
        volume={9},
        number={30},
        publisher={EAI},
        journal_a={INIS},
        year={2022},
        month={4},
        keywords={Internet of Things, wireless sensor networks, information centric networking, caching scheme, content store, traffic aware},
        doi={10.4108/eetinis.v9i30.561}
    }
    
  • Ngoc-Thanh Dinh
    Year: 2022
    An Efficient Traffic-aware Caching Mechanism For Information-centric Wireless Sensor Networks
    INIS
    EAI
    DOI: 10.4108/eetinis.v9i30.561
Ngoc-Thanh Dinh1,*
  • 1: School of Electronic Engineering, Soongsil University, Korea
*Contact email: thanhdcn@dcn.ssu.ac.kr

Abstract

This paper proposes a traffic-aware caching mechanism (TCM) for resource-constrained nodes in information- centric WSNs. TCM pushes up popular upstream content objects to be cached nearby the sink. Less popular content objects are cached farther from the sink compared to popular content objects. TCM also pushes down popular downstream content objects to be cached inside the network. The objective of TCM is to reduce the number of interest messages required forwarding in multiple hops inside WSNs to optimize stretch ratio, energy efficiency, and content retrieval latency. We implement TCM on the top of existing popularity-based caching schemes to improve their performance. Through analysis and experimental results, we show that TCM achieves a significant improvement in terms of energy efficiency, content retrieval latency, cache hit ratio, and stretch ratio compared to state-of-the-art popularity-based caching schemes.