基于无线的EPA通信模型

Communication model based on wireless EPA

针对基于EPA标准的无线和有线网段的无缝集成问题,探讨了EPA中基于无线的通信模型,即符合无线局域网(IEEE 802.11)和蓝牙标准的无线EPA设备与有线(以太网)EPA设备的通信模型。通过对EPA设备间的通信过程的分析,总结出有线与无线设备之间通信的两类调度管理思想及特点。通过对演示系统的测试,验证了该通信模型能较有效地完成EPA无线设备与有线设备之间的通信。

In view of the problem of Integrated Hybrid （Wired/Wireless） Field bus on EPA profile, wireless communication model on EPA is discussed. It is expatiated that wire EPA device communicates with wireless EPA device based on WLAN （IEEE802.11） protocol and Bluetooth protocol. Through study on communications process, the paper provides two scheduling management methods and characteristics about communications between wireless EPA device and wire EPA device based on Ethernet. By testing a demonstration system, this paper proves that the communication model makes wireless device and wire EPA device communicating orderly.