An efficient P2P content distribution system based on altruistic demand and recoding dissemination

Jung Shian Li, Chih Hung Chao

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

Peer-to-peer (P2P) content distribution systems based on random linear combination coding schemes outperform traditional block forwarding and source coding systems but have large storage requirements and high computation and communication overheads. To resolve this problem, this paper presents an efficient and scalable P2P content dissemination system based on novel altruistic demand and recoding dissemination mechanisms. In the proposed approach, the shared-content file is segmented and encoded using Reed-Solomon code at a seed. Downstream peers wishing to obtain the file utilize an altruistic demand mechanism to issue demand requests for coded blocks which are useful not only to themselves but also to their neighbors. Upon receiving these requests, the upstream peers utilize a recoding dissemination mechanism to provide the downstream peers with either an existing useful coded block or a new coded block produced using a Lagrange polynomial interpolation method. The two mechanisms rapidly increase the diversity of the coded blocks within the network and therefore provide an effective solution to the missing last block problem. In addition, it is shown that the proposed content distribution system demonstrates a substantial improvement over P2P systems based on random linear combination coding in terms of a lower storage requirement, reduced computation and communication costs, and an improved download efficiency.

原文English
文章編號5446371
頁(從 - 到)1083-1093
頁數11
期刊IEEE Transactions on Systems, Man, and Cybernetics Part A:Systems and Humans
40
發行號5
DOIs
出版狀態Published - 2010 九月

All Science Journal Classification (ASJC) codes

  • Software
  • Control and Systems Engineering
  • Human-Computer Interaction
  • Computer Science Applications
  • Electrical and Electronic Engineering

指紋 深入研究「An efficient P2P content distribution system based on altruistic demand and recoding dissemination」主題。共同形成了獨特的指紋。

引用此