OVPN软管模型的分层路由及时延优化算法研究  

Study about hierarchical routing and delay optimization algorithms for optical virtual private networks using the hose model

作　　者：姚琼波[1] 钱炎琛[1] 刘逢清[1] 

机构地区：[1]南京邮电大学光电工程学院,南京210046

出　　处：《光通信技术》2011年第10期7-9,共3页Optical Communication Technology

摘　　要：提出了分层式路由算法,先依据软管模型的业务需求对上层网络进行优化,然后映射至物理网络,减少了问题的复杂性。为协调总预留带宽及总平均时延这两个优化目标,定义了用户倾向参数,即依据用户实际要求选择优化目标构建优化网络。仿真结果表明在牺牲一定总预留带宽情况下较大提高了总平均时延。Propose a novel hierarchical routing algorithm, which optimizes the logical network in terms of the service requirements of hose model and then maps the logical topology into the physical network. This method can greatly reduce the complexity of the problem. To balance the optimization object functions between mini- mum totally reserved bandwidth and minimum totally average delay, a customer-inclined parameter is intro- duced. It enables customers to choose an optimal topology according to their own requirements. The numeri- cal results indicate that the totally average delay has been greatly reduced at the expense of a certain reserved bandwidth.

关 键 词：光虚拟专用网 分层路由 总预留带宽 总平均时延 

分 类 号：TN929.11[电子电信—通信与信息系统]