摘要
A layered network model for optical transport networks is proposed in this paper,which involves Internet Protocol(IP) ,Synchronous Digital Hierarchy(SDH) and Wavelength Division Mul-tiplexing(WDM) layers. The strategy of Dynamic Joint Routing and Resource Allocation(DJRRA) and its algorithm description are also presented for the proposed layered network model. DJRRA op-timizes the bandwidth usage of interface links between different layers and the logic links inside all layers. The simulation results show that DJRRA can reduce the blocking probability and increase network throughput effectively,which is in contrast to the classical separate sequential routing and resource allocation solutions.
A layered network model for optical transport networks is proposed in this paper, which involves Internet Protocol （IP）, Synchronous Digital Hierarchy （SDH） and Wavelength Division Multiplexing （WDM） layers. The strategy of Dynamic Joint Routing and Resource Allocation （DJRRA） and its algorithm description are also presented for the proposed layered network model. DJRRA optimizes the bandwidth usage of interface links between different layers and the logic links inside all layers. The simulation results show that DJRRA can reduce the blocking probability and increase network throughput effectively, which is in contrast to the classical separate sequential routing and resource allocation solutions.
基金
the Science & Technology Foundation of Huawei Ltd. (No.YJCB2005040SW)
the Creative Foundation of Xidian University (No.05030).
关键词
光学传输网络
分层网络模型
路由
资源分配
Layered network model
Optical transport network
Joint routing and resource allocation
Network throughput
