基于OPNET的卫星网络路由仿真  

Satellite Network Routing Simulation Based On OPNET

作　　者：张蕴玉[1] 胡伟圣[1] 胡修林[1] 

机构地区：[1]华中科技大学电子信息与工程系,湖北省武汉市430074

出　　处：《微计算机信息》2007年第02X期110-112,共3页Control & Automation

基　　金：国防预研基金资助项目(编号不公开)

摘　　要：具有星际链路的卫星网络将在今后发挥巨大的作用,而混合星座具有比单层星座更加优异的性能,双层星座GEO/LEO能够在物理上实现网络管理和业务的分离,便于对全网络的管理和集中式路由的实现。依据卫星网络运动的规律性,采用虚拟拓扑路由策略,在OPNET中对GEO/LEO双层星座进行了集中式路由的仿真;在定义链路权值时,除了传统上考虑的传播时延、排队时延外,还加上了地理因素的影响,使之更符合卫星网络的实际情况。Satellite networks with inter-satellite links will play an important role in the future, and a hybrid constellation performs better than a single layer constellation. Hybrid GEO/LEO constellation can separate network manage from traffic in physical layer, conve- nient to manage total network and operate central routing. Satellite networks run regularly in the space, so virtual topology muting strategy is adopted, and a central muting is simulated in the hybrid GEO/LEO constellation based on OPNET. Geographic factor are taken into account besides traditional propagation delay and queuing delay when defining link weight to accord practical satellite networks.

关 键 词：卫星网络 路由仿真 OPNET 链路权值 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]