北京邮电大学学报

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北京邮电大学学报

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一种基于分割的OBS网络资源预留与路由机制(增刊)

郑伟

  

  1. 北京邮电大学继续教育学院(即北京邮电大学通信网络综合技术研究所;北京邮电大学培训中心)
  • 收稿日期:2006-12-13 修回日期:2007-02-11 出版日期:2007-06-30 发布日期:2007-06-30
  • 通讯作者: 贾嘉

Partition-based Resource Reservation and Routing Strategy for OBS network

  • Received:2006-12-13 Revised:2007-02-11 Online:2007-06-30 Published:2007-06-30

摘要: 提出了一种基于分割的资源预留与路由机制,该机制把一个OBS网络的所有核心节点分割到几个不同的集合中,在集合内部和集合间施行不同的路由机制,将固定路径路由和逐跳路由有机结合起来。仿真结果表明,在可扩展性,总体吞吐量以及平均端到端延时方面,提出的机制在固定路径路由和逐跳路由两种机制之间取得了一个折中的效果,同时,提出机制的节点处理时间低于逐跳路由机制,突发阻塞率低于固定路径路由机制。

关键词: 光突发交换, 分割, 路由

Abstract: A novel strategy for OBS network called Partition-based Resource Reservation and Routing Strategy is proposed. The proposed strategy partitions the OBS core network into multiple regions, and different resource reservation and routing protocols are performed in intra-region and inter-region. The proposed strategy takes the advantages of two different routing schemes. Simulations show that the proposed strategy has improved the overall network throughput and reduced the average blocking probability thus reduces the retransmission delay. The node processing time of the proposed strategy is lower than hop by hop routing scheme and the burst block probability is lower than fixes path routing scheme.

Key words: Optical Burst Switching, partition, routing