LEO卫星网络路由算法的OPNET建模与仿真

由于OPNET没有提供标准卫星模块和星上路由器模块,这给卫星网络仿真带来一定难度.针对LEO卫星网络路由算法,提出了一种OPNET路由仿真模型.该仿真模型主要由卫星网络域、卫星节点域和路由进程域组成.卫星网络域实现网络拓扑结构的动态变化,节点域利用无线仿真机制进行数据的发送和接收,路由进程域完成具体算法的实现.为了检验模型的性能,仿真分析了几种典型的星上路由算法.结果表明,提出的仿真模型是正确可行的,且具有一定的通用性,为卫星通信网络性能的仿真和分析提供了一种简单有效的途径.

Modeling and Simulation of Routing Algorithms for LEO Satellite Networks with OPNET

Due to standard satellite models and satellite routers which are not provided in the OPNET, some difficulties for satellite network simulations are occurred. Thus, An OPNET simulation model of routing algorithms for LEO satellite networks is proposed. The model mainly consists of a satellite network domain, a satellite node domain and a routing process domain. The network domain performs the dynamic change of a network topology. Transmitting or receiving the signal data is imitated in the node domain with a wireless mechanism. And the process domain realizes the routing algorithms. Furthermore, in order to verify the performance of this model, several types of routing algorithms are simulated. The results show that the OPNET model is feasible and can be used as guidance. And the model also provides an efficient approach for simulation and analysis of satellite communication networks.