Incentive Service Differentiation for P2P Content Sharing by Wireless Users

Masato YAMADA
Kenichiro SATO
Ryoichi SHINKUMA
Tatsuro TAKAHASHI

Publication
IEICE TRANSACTIONS on Communications   Vol.E90-B    No.12    pp.3561-3571
Publication Date: 2007/12/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.12.3561
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
Keyword: 
P2P content sharing by wireless user,  wireless P2P,  incentive,  service differentiation,  wireless QoS,  game theory,  

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Summary: 
Wireless content sharing where peers share content and services via wireless access networks requires user contributions, as in fixed P2P content sharing. However, in wireless access environments, since the resources of mobile terminals are strictly limited, mobile users are not as likely to contribute as ones in fixed environments. Therefore, incentives to encourage user contributions are more significant in wireless access environments. Although an incentive service differentiation architecture where the content transfer rate is adjusted according to the contributions of each downloading user has been already proposed for fixed P2P, it may not work well in wireless access environments because several factors effect wireless throughput. In this paper, we propose a novel architecture for contribution-based transfer-rate differentiation using wireless quality of service (QoS) techniques that motivates users to contribute their resources for wireless content sharing. We also propose a radio resource assignment method for our architecture. Computer simulations and game-theoretic calculations validate our architecture.