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Extended Equal Service and Differentiated Service Models for Peer-to-Peer File Sharing
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  • Extended Equal Service and Differentiated Service Models for Peer-to-Peer File Sharing
  • Extended Equal Service and Differentiated Service Models for Peer-to-Peer File Sharing
저자명
Zhang. Jianwei,Wang. Yongchao,Xing. Wei,Lu. Dongming
간행물명
Journal of communications and networks
권/호정보
2013년|15권 2호|pp.228-239 (12 pages)
발행정보
한국통신학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Peer-to-peer (P2P) systems have proved the most effective and popular file sharing applications in recent years. Previous studies mainly focused on equal service and differentiated service strategies when peers have no initial data before their downloads. For an upload-constrained P2P file sharing system, we model both the equal service process and the differentiated service process when the initial data distribution of peers satisfies some special conditions. Moreover, we show how to minimize the time required to distribute the file to any number of peers. The proposed fluid-based models can reveal the intrinsic relations among the initial data amount, the peer set size, and the minimum last finish time. The closed-form expressions derived from the extended models can closely approximate chunk-based models and systems, especially for relatively large files. As an application of the extended models, we show how to provide differentiated service efficiently to multiple peer sets. Since no limits are imposed on the upload bandwidth of peers or the size of each peer set, we believe that our analytic process and the results achieved can provide not only fundamental insights into bandwidth allocation and data scheduling but also a helpful reference for both improving system performance and building an effective incentive mechanism for P2P file sharing systems.