Trustworthy distributed algorithm design to defend distance cheating in link-weighted ALM

  • Authors:
  • Dan Li;Jianping Wu;Yong Cui;Jiangchuan Liu;Ke Xu

  • Affiliations:
  • Department of Computer Science, Tsinghua University, Beijing, P.R. China;Department of Computer Science, Tsinghua University, Beijing, P.R. China;Department of Computer Science, Tsinghua University, Beijing, P.R. China;School of Computing Science, Simon Fraser University, British Columbia, Canada;Department of Computer Science, Tsinghua University, Beijing, P.R. China

  • Venue:
  • ISCIS'06 Proceedings of the 21st international conference on Computer and Information Sciences
  • Year:
  • 2006

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Abstract

In link-weighted Application Layer Multicast (ALM), each selfish and strategic end-host receiver may cheat in distance measurement to obtain a better position in the ALM tree. Distance cheating of ALM receivers might lead the ALM tree to be sub-optimal and unstable. We proposed a VCG-based cheat-proof mechanism to defend this kind of cheating behavior in previous work. Based on the theoretical framework, a practical algorithm is designed in this paper, which runs distributedly on ALM receivers. The primary characteristic of the distributed algorithm lies in that it is trustworthy to enforce each selfish receiver to fulfill the algorithm truthfully, which is not considered in other similar studies. Simulations results further suggest that the algorithm is effective in defending distance cheating in link-weighted ALM.