摘要： 针对嵌入式安全关键网络设计了一种基于FC的简约信令通信协议，该信令协议采用层次队列调度策略来实现对不同数据流的区分服务，探讨了在NS2中建立仿真模型并实现新协议仿真的方法，从帧扩展、节点扩展、链路和Agent扩展4个方面叙述了模型的建立过程。仿真结果表明，新算法在区分服务方面的性能良好，通过扩展NS2验证了新的网络协议和算法能提高效率，降低成本，具有更好的灵活性。

关键词: 安全关键网络, NS2, 网络仿真

Abstract: This paper designs a new signaling protocol based on FC for embedded safety critical network, and the protocol realizes differentiated service in the queue scheduling according to different data types. Based on this protocol, it discusses how to extend NS2, especially how to build a simulation model by extending frame, node, Agent and link. The simulation results indicate that queue scheduling algorithms work well in differentiated service. Extending NS2 to verify network protocol and algorithms can raise efficiency and reduce costs, on the other hand, it is much more flexible.

Key words: safety critical network(SCN), NS2, network simulation

中图分类号: 

• TP393