In-Network Cache Management Based on Differentiated Service for Information-Centric Networking

Qian HU
Muqing WU
Hailong HAN
Chaoyi ZHANG

IEICE TRANSACTIONS on Communications   Vol.E97-B    No.12    pp.2616-2626
Publication Date: 2014/12/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E97.B.2616
Type of Manuscript: Special Section PAPER (Special Section on Technologies and Architectures for Improving Scalability, Reliability, and Robustness for Future Information Networks)
information-centric networking,  in-network caching,  cache management,  caching strategy,  quality of service,  

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As a promising future network architecture, Information-centric networking (ICN) has attracted much attention, its ubiquitous in-network caching is one of the key technologies to optimize the dissemination of information. However, considering the diversity of contents and the limitation of cache resources in the Internet, it is usually difficult to find a one-fit-all caching strategy. How to manage the ubiquitous in-network cache in ICN has become an important problem. In this paper, we explore ways to improve cache performance from the three perspectives of spatiality, temporality and availability, based on which we further propose an in-network cache management strategy to support differentiated service. We divide contents requested in the network into different levels and the selection of caching strategies depends on the content level. Furthermore, the corresponding models of utilizing cache resources in spatiality, temporality and availability are also derived for comparison and analysis. Simulation verifies that our differentiated service based cache management strategy can optimize the utilization of cache resources and get higher overall cache performance.