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Provider-level content migration strategies in P2P-based media distribution networks

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3 Author(s)
Haiqin Liu ; Sch. of Electr. Eng. & Comput. Sci., Washington State Univ., Pullman, WA, USA ; Yan Sun ; Min Sik Kim

In a P2P-based media distribution network (PMDN), content migration is one of the key problems that affect the overall performance of a system. In the system hierarchy, the content migration problem consists of two levels of migration: provider-level migration and user-level migration. In this paper, we focus on the former, provider-level migration, where the goal is to reduce data migration cost while enhancing the local cache hit ratio of media contents. Since this is an NP-complete problem, we propose two types of heuristic migration strategies: object-benefit-based migration (OBM) and peer-benefit-based migration (PBM). The former maximizes the local benefits in allocating a data object to a certain node, while the latter maximizes the benefit of each peer. Experimental results show the effectiveness of both algorithms, which significantly outperform random and round-robin migration schemes.

Published in:

Consumer Communications and Networking Conference (CCNC), 2011 IEEE

Date of Conference:

9-12 Jan. 2011