光电混合网络中基于QoS分层图模型的路由算法

Routing algorithms based on QoS hierarchical graph model in hybrid optoelectronic networks

针对在光电混合网络架构下服务质量(QoS)需求迥异的异质业务路由的问题,提出一种基于QoS分层图模型的路由算法。该算法将网络中的异构链路与异质业务建立QoS等级映射关系,并根据QoS等级建立一种QoS分层图模型,完成网络虚实资源的融合。仿真结果表明:该算法有效实现了光电异构资源的联合优化,降低了阻塞率,可为不同QoS需求的业务提供差异化服务,优先保证高QoS等级业务的阻塞率性能。

To solve the problem of heterogeneous service routing with different quality of service(QoS)requirements under hybrid optoelectronic network architecture,an routing algorithm based on the model of QoS layered-graph is proposed.The algorithm establishes a QoS level mapping relationship between heterogeneous links and heterogeneous services in the network,and establishes a hierarchical graph model of QoS according to the level of QoS to achieve the integration of virtual and real resources in the network.The simulation result shows that the algorithm effectively achieves the joint optimization of heterogeneous optical/electrical resources,reduces the blocking rate,can provide differentiated services for different QoS needs of the traffic,giving priority to ensuring the blocking performance of high-QoS-level services.