改进的航电网络模型仿真与分析

研究了光纤通道技术的应用,使用OPNET建立了基于光纤通道的航电网络,并且按照协议标准建立了终端节点和交换机节点的有限状态机模型。交换机使用组合输入交叉排队(Combined Input-Crosspoint Queueing,CICQ)结构,在输入端口和输出端口使用差值轮询调度(Deficit Round Robin,DRR)算法,然后使用OPNET进行仿真,分析了网络的端到端延迟和吞吐量。结果显示在航电网络中,使用DRR调度算法,能够显著降低数据包的端到端延迟,满足一定的实时性,提高网络的吞吐量,表明此模型适合航电网络。

Improved model of avionics network simulation and analysis

The application of fiber channel was studied, a Fiber Channel-based Avionics Network was established by OPNET, according to protocol standards the finite state machine models of terminal nodes and switching node were established. The switch structure was CICQ, using DRR algorithm in input and output ports. Then the network was simulated by OPNET, end to end delay and network throughout were studied. The results show that using the DRR scheduling algorithm can reduce end to end packet delay, meet real time request, increase network throughout, so this model is suitable for avionics network.