工业无线网络实时传输调度算法研究综述

A Survey of Real-time Transmission Scheduling Algorithms for Industrial Wireless Network

无线网络是工业物联网中一种具有良好前景的网络互联技术.它的应用为工业现场设备部署提供了极大便利,使设备摆脱了线缆的束缚,从而在空间上选点更为灵活,同时能够节省线材和人力等方面的成本.然而,无线通信易受环境噪声影响,尤其是在复杂电磁干扰的工业环境中,易导致无线传输的时延增大和数据丢失.这些问题对于传输实时性要求较高的工业控制系统是非常不利的因素.为了提高无线网络在工业环境中数据传输的实时性,学者们设计了多种传输调度算法,以提高无线通信的实时性和可靠性,从而满足工业应用的需求.综述了工业无线网络传输调度算法的研究现状,对其发展历程、问题定义、评价指标、分类方法和现有标准等方面进行了全面总结,详细阐述了具有代表性的调度算法的工作原理,并指出了未来的研究方向.

The wireless network provides great convenience for the deployment of industrial devices,gets rid of the shackles of cables,makes the deployment of devices more flexible,and saves the cost of materials and manpower,which is the development trend of the industrial internet of things.However,since wireless communication is susceptible to interference,especially in the industrial environment with complex electromagnetic interference,it is easy to lead to increased delay and data loss in wireless transmission,which is a disadvantage for industrial control systems that require high real-time transmission.In order to improve the real-time performance of data transmission in wireless networks in industrial environments,researchers have designed a variety of industrial wireless network transmission scheduling algorithms to improve the real-time and reliability of wireless communication to meet the industrial application requirements.This paper reviews the current researches of transmission scheduling algorithms for industrial wireless network,and comprehensively summarizes the development history,problem definitions,evaluation metrics,classification methods and existing standards,and elaborates the working principles of representative scheduling algorithms in detail,and points out the future research direction.