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由于UWB技术信道获取时间长,而在工业控制系统中短包通信较多,使得UWB应用到工业控制系统中性能严重下降。针对这一问题,在分析了CSMA/CA协议应用于基于UWB的工业控制系统中存在的问题的基础上,提出了基于UWB的工业控制系统专用的PA-MAC协议,设计了适应工业控制系统的缓存管理方法、包合并策略及合并包确认机制。通过建模仿真,分析了CSMA/CA协议和PA-MAC协议应用于基于UWB的工业控制系统中的相关指标,结果表明PA-MAC协议能够有效地提高时隙利用率,降低了平均时延。
Due to the long time acquisition of UWB technology channel and the short packet communication in industrial control system, the performance of UWB applied to industrial control system seriously deteriorates. In response to this problem, based on the analysis of the problems existing in the application of CSMA / CA protocol in UWB-based industrial control systems, the PA-MAC protocol for industrial control system based on UWB is proposed, and the design of industrial control system Cache management method, package merge strategy and merger package confirmation mechanism. Through modeling and simulation, the relevant indexes of CSMA / CA and PA-MAC protocols used in UWB-based industrial control systems are analyzed. The results show that PA-MAC protocol can effectively improve the utilization ratio of time slots and reduce the average delay.