Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/55918
Title: InCan : In-network cache assisted eNodeB caching mechanism in 4G LTE networks
Authors: Ming, Z
Xu, M
Wang, D 
Keywords: Information-centric networking
In-network caching
eNodeB caching
Issue Date: 2014
Publisher: Elsevier
Source: Computer networks, 2014, v. 75, no. Part A, p. 367-380 How to cite?
Journal: Computer networks 
Abstract: The rapid growth of wireless data networks has introduced unprecedented traffic that far exceeds the deployment of cellular infrastructures. Caching has been a common approach for coping with the increased amount of traffic. In this paper we propose an in-network cache assisted eNodeB caching mechanism for 4G LTE Networks. The idea is to cache content objects at eNodeBs1 and leverage in-network caches to improve eNodeB caching. We model the cost structure from both bandwidth and delay viewpoints and show that eNoodeB caching is noticeably beneficial. We propose a framework in which eNodeBs can use the information from in-network caches to improve caching performance. We formulate the problem of maximizing delay reduction and prove that the problem is NP-complete. We provide a 2-competitive offline algorithm and a practical online algorithm to solve the problem. We conduct trace-driven simulations and experiment under both synthetic and real network topologies. Results show that our approach can significantly save bandwidth for mobile operators and reduce delays for end users.
URI: http://hdl.handle.net/10397/55918
ISSN: 1389-1286
DOI: 10.1016/j.comnet.2014.10.021
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