Collaborative forwarding and caching in content centric networks

Authors:
Shuo Guo;Haiyong Xie;Guangyu Shi
Affiliations:
University of Minnesota, Minneapolis, Minnesota;University of Science and Technology of China, Hefei, China,Central Research Institute, Huawei Technologies, Shenzhen, China;Central Research Institute, Huawei Technologies, Shenzhen, China
Venue:
IFIP'12 Proceedings of the 11th international IFIP TC 6 conference on Networking - Volume Part I
Year:
2012

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Abstract

Content caching plays an important role in content-centric networks. The current design of content-centric networks adopts a limited, en-route hierarchical caching mechanism, and caching and forwarding are largely uncoordinated. In this paper, we propose a novel collaborative caching and forwarding design. In this design, collaboration is guided by content popularity ranking, based on which we introduce a collaborative forwarding table to allow coordination between caching and forwarding. We also propose a self-adaptive dual-segment cache division algorithm to deal with dynamic inconsistent content popularity. We evaluate our design via extensive simulations and demonstrate that our design improves content access cost and cache miss rate by at least 30% in a diverse network settings.