基于WIA-PA工业无线传感器网络的自适应调度型MAC协议

为了让设备快捷、准确地接入网络,同时避免因碰撞而导致网络时延,造成网络中大量带宽和功耗的浪费,提出一种基于WIA-PA(wireless networks for industrial automation-process automation)工业无线传感器网络的调度型媒体访问控制(media access control,MAC)协议。该自适应调度方法通过对WIA-PA超帧结构进行改进,使设备在接入网络的过程中,网络管理器根据网络中数据吞吐量的实时变化情况,自适应地调整超帧结构中各阶段的长度,合理地分配通信资源。测试结果表明,该方法既避免了带宽的浪费,同时也节省了能耗,具有很大的实用价值。

Adaptive scheduling MAC protocol based on WIA-PA industrial wireless sensor network

In order to make devices fast, accurate access network, and also to void collision which causes the network delay, resulting in large network bandwidth and power waste, this paper proposes a scheduling MAC layer protocol based on industry wireless sensor network. The adaptive scheduling method improves the WIA-PA super frame structure, during the period of devices access to the network ,the network manager will adaptively adjust the length of each stage in frame structure, according to the real-time changes of dada throughput in the network, allocate communication resources reasonably. Tests show that this method not only avoids the waste of bandwidth, but also saves energy consumption, and has great practical value.