论文部分内容阅读
针对光突发交换(OBS)网络中如何高效解决频繁发生的光突发竞争问题,提出了一种支持业务均衡的OBS自适应多可达性路由机制(AMR-LB)。首先根据发送端发送业务量大小和当前网络业务承载状态,按需地为光突发确定多可达性路由;然后在非线性规划下,自适应地调整各条路由的业务承载比例。通过性能仿真,并与自适应替代路由算法(AARA)等典型机制比较,AMR-LB在突发丢失率和带宽利用率都得到明显改善,分别约20%和10%。仿真结果表明,该机制不仅可以有效地降低全网丢包率,而且还可以提高网络带宽资源的利用率。
In order to solve the frequent optical burst competition efficiently in Optical Burst Switching (OBS) networks, an OBS adaptive multi-reachability routing mechanism (AMR-LB) supporting service equalization is proposed. Firstly, according to the size of the traffic sent by the sending end and the current state of the network traffic bearer, the multi-reachability routing for optical burst is determined as needed. Then, the service bearer proportion of each route is adaptively adjusted under the non-linear programming. Through performance simulation and comparison with typical mechanisms such as adaptive alternative routing algorithm (AARA), AMR-LB has significantly improved the burst loss rate and bandwidth utilization by about 20% and 10% respectively. Simulation results show that this mechanism can not only effectively reduce the packet loss rate of the whole network, but also improve the utilization rate of network bandwidth resources.