WDM网络中考虑Qos约束的动态业务路由算法

路由问题是WDM网络中的一个核心问题。该文研究了WDM网络中受瓶颈带宽Qos和时延Qos约束的动态业务路由算法。算法以链路的延时值作为链路的权值,为网络中所有节点对计算所有代价有限的路由,作为备用路由。当一个连接请求到达时,考察其瓶颈带宽Qos指标与时延Qos指标,在备用路由集中选择满足Qos指标的路由;对所选路由综合考察其跳数、成本以及链路瓶颈带宽,计算目标函数,选择目标函数值最优的路由建立连接。

A Qos-Based Routing Algorithm for Dynamic Operation in WDM Networks

The problem of routing is still a core problem in WDM networks.The text has studied the dynamic operation routing algorithm restricted by delaying Qos target and bottleneck bandwith Qos target.The algorithm uses the link delaying cost as the weight of link,calculates all the limited cost routes as alternated routes.When the connection call arriving,it's delaying Qos target and bottleneck bandwith Qos target are checked,and the routes according with the Qos target are selected from the alternated routes set;For each route,this algorithm considers it's hop number?cost and link bottleneck bandwith together,calculates it's target function,and selects the route whose target function is the best to build the connection.