基于阈值检测的光突发交换偏射路由算法

光突发交换是适合在当前技术条件下的新交换技术,它比电路交换灵活,带宽利用率高,又比光分组交换易于实现,将成为下一代光IP骨干网的核心技术。在光突发交换网络中,偏射路由算法是有效解决突发竞争、提高网络性能的一种重要措施。首先分析了发送端控制的偏射路由技术,在此基础上提出了一种基于阈值检测的偏射路由的改进算法。该算法通过跳数来控制无效偏射路由并通过有条件地丢弃偏射突发来保证正常突发的丢包率,从而减少偏射路由对网络负荷的影响,使整个网络的丢包率得到一定提高,改善网络性能。

A Deflection Routing Algorithm Based on Threshold Detection in OBS Networks

This paper introduces a new switching technology-optical burst switching, OBS is more flexible and has higher bandwidth utilization rate than circuit switching and more feasible than optical packet switching. It will be the core technology of next IP backbone network. The deflection routing protocol is an effective measure to resolve contentions in optical burst switching network. This paper analyzes the sending end controlled deflection routing technology, proposes an improved scheme based on threshold detection. The proposed scheme can control non-effective deflection routing and improve loss probability of non-deflected burst, so as to reduce the influence of deflection routing on network load, improve the network loss probability and network performance.