摘要
研究了IPoverWDM网中,当节点不具备波长变换能力并且配备有限光收发器对时,如何利用综合选路(IR)算法为到达业务请求建立标签交换路径(LSP)。提出一种新颖的辅助图模型(AGM)表示网络的当前状态,基于AGM提出一种动态IR算法—最小光收发器对法(MTA)。MTA总是选择占用光收发器对最少的通路来建立LSP。仿真结果表明:与已有算法相比,MTA可以降低全网的阻塞率,从而提高业务通过率,并且有利于减少业务连接所经光/电变换的次数。
Under the constraints of the number of transceivers per node and wavelength continuity, the integrated routing (IR) in IP over WDM networks was investigated. A novel auxiliary graph model (AGM) was proposed to represent current state of the network. Based on AGM, an efficient dynamic 1R scheme, minimal transceiver approach (MTA), was developed. It always routes an arriving connection request over the path with the least number of transceivers used by newly created lightpaths. The simulation results show that MTA can improve the blocking probability and the traffic throughput considerably compared to the existing methods. And MTA results in lesser number of O-E-O conversions are in favor of QoS.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2004年第3期322-327,共6页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(60002004)
教育部科学技术研究重点资助项目(02064)
中国博士后科学基金资助项目(2003033031)
