面向高速工业无线网络的TDMA MAC协议设计与实现

High Data Rate Wireless Industrial Networks Test-bed for TDMA MAC Development:Design and Experimentation

随着无线技术的发展,在工业自动化中引入无线技术已经成为一种潮流,同时TDMA机制由于可以完全避免冲突,因此在大规模高实时要求的面向车间的无线技术研究中受到了广泛关注,但现在面向车间的高速实时无线技术的研究大都局限于软件仿真。通过在商用802.11硬件上设计并实现面向车间级工业应用的高速工业无线TDMAMAC层协议,建立了一个基于TDMA的面向工业应用的高速无线网络原型系统,实验结果表明实验平台完全能够支撑毫秒级时隙调度的TDMA应用。

With the development of wireless technology,using wireless technology in industrial environment becomes more and more popular,meanwhile researchers pay more attention to TDMA mechanism due to its capability to avoid collision which makes wireless communication behavior much more determinate,but most current researches are limited to simulations and experimental studies are rare.To bridge this gap,we developed and implemented a high data rate wireless networks testbed based on TDMA mechanism and commodity IEEE 802.11 hardware,the test-bed can be used for filed level industrial wireless technology＇s development and experiment,and experimental evaluation shows the test-bed can support TDMA applications that require time slot schedule in millisecond.