Acta Metallurgica Sinica(English letters)

• Networks • 上一篇    下一篇

Layered multicast congestion control by particle swarm optimization in heterogeneous environment

麻海圆,孟相如,马志强,李金良   

  1. 空军工程大学
  • 收稿日期:2010-08-08 修回日期:2011-02-19 出版日期:2011-06-30 发布日期:2011-06-13
  • 通讯作者: 麻海圆 E-mail:haiyuanma@live.cn
  • 基金资助:

    基于模糊逻辑的组播拥塞控制研究;分层组播的模糊拥塞控制研究

Layered multicast congestion control by particle swarm optimization in heterogeneous environment

  • Received:2010-08-08 Revised:2011-02-19 Online:2011-06-30 Published:2011-06-13
  • Contact: Hai-Yuan MA E-mail:haiyuanma@live.cn

摘要:

To enhance multicast throughput in heterogeneous environment, a new layered multicast congestion control scheme is proposed. With the goal of maximizing global satisfaction of the whole group, allocating sending rate in each layer is formulated to an optimization problem. Since the problem is noncovexity, the sender uses particle swarm optimization to search a set of optimal layers rates. The new scheme also eliminates ‘lowest-first’ phenomenon by proposing a feedbacks suppression algorithm named equal-probability sampling (EPS). Upon EPS all the receivers send feedbacks at equal probability without bias. Simulation results prove that the new scheme can enhance global satisfaction and multicast throughput efficiently, compared with the traditional layered multicast congestion control scheme based on representatives.

关键词:

layered multicast, congestion control, particle swarm optimization, feedbacks suppression

Abstract:

To enhance multicast throughput in heterogeneous environment, a new layered multicast congestion control scheme is proposed. With the goal of maximizing global satisfaction of the whole group, allocating sending rate in each layer is formulated to an optimization problem. Since the problem is noncovexity, the sender uses particle swarm optimization to search a set of optimal layers rates. The new scheme also eliminates ‘lowest-first’ phenomenon by proposing a feedbacks suppression algorithm named equal-probability sampling (EPS). Upon EPS all the receivers send feedbacks at equal probability without bias. Simulation results prove that the new scheme can enhance global satisfaction and multicast throughput efficiently, compared with the traditional layered multicast congestion control scheme based on representatives.

Key words:

layered multicast, congestion control, particle swarm optimization, feedbacks suppression

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