Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2014, Vol. 37 ›› Issue (5): 91-95.doi: 10.13190/j.jbupt.2014.05.019

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A Cell Assignment Algorithm for Balancing Multicast Traffic with Small Fanout

GAO Ya1, QIU Zhi-liang2, ZHANG Jian2   

  1. 1. School of IOT Technology, Wuxi Institute of Technology, Jiangsu Wuxi 214121, China;
    2. State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China
  • Received:2013-11-24 Online:2014-10-28 Published:2014-11-07

Abstract:

When the fanout number of multicast cells is relatively small, the existing cell assignment scheme has poor performances under balancing traffic load. The scheduling algorithm can almost not benefit from the increase of multicast queues. A weighted modulo (WM) algorithm for multicast cell assignment was presented, which can ensure more scheduling opportunities and work conservation. The proposed scheme performs modulo operation on the weighted sums of the fanout bits to get the mapped queue number, thus the multicast cells with small fanout numbers can be balanced very well. Simulations show that multicast scheduling algorithm adopting the proposed scheme has higher throughput than that adopting the Modulo algorithm.

Key words: multicast fanout, cell assignment, scheduling algorithm, load balancing

CLC Number: