通信学报 ›› 2020, Vol. 41 ›› Issue (4): 92-101.doi: 10.11959/j.issn.1000-436x.2020060

• 学术论文 • 上一篇    下一篇

面向工业物联网的IEEE 802.11ah协议RAW在线式重分组方法

孙彦景1,杨俊秋1,陈岩1,王艳芬1,陈晓晶2,刘丰祯2,孙智3   

  1. 1 中国矿业大学信息与控制工程学院,江苏 徐州 221116
    2 天地(常州)自动化股份有限公司,江苏 常州 213015
    3 纽约州立大学布法罗分校电气学院,布法罗 14260
  • 修回日期:2020-03-02 出版日期:2020-04-25 发布日期:2020-04-30
  • 作者简介:孙彦景(1977- ),男,山东滕州人,博士,中国矿业大学教授、博士生导师,主要研究方向为嵌入式实时系统、无线传感器网络、信息物理系统|杨俊秋(1994- ),男,四川泸州人,中国矿业大学硕士生,主要研究方向为无线网络|陈岩(1994- ),男,江苏睢宁人,中国矿业大学博士生,主要研究方向为无线网络、边缘计算、物联网等|王艳芬(1962- ),女,江苏徐州人,博士,中国矿业大学教授,主要研究方向为信号处理与通信|陈晓晶(1981- ),男,江苏南通人,天地(常州)自动化股份有限公司高级工程师,主要研究方向为煤矿自动化、数字化、智能化研发等|刘丰祯(1990- ),男,山东潍坊人,天地(常州)自动化股份有限公司助理研究员,主要研究方向为矿井无线通信、矿井监控|孙智(1981- ),男,北京人,博士,纽约州立大学布法罗分校教授,主要研究方向为无线通信网络、水下无线通信、磁感应通信
  • 基金资助:
    国家重点研发计划基金资助项目(2017YFC0804400)

RAW online regrouping method in IEEE 802.11ah protocol for industrial Internet of things

Yanjing SUN1,Junqiu YANG1,Yan CHEN1,Yanfen WANG1,Xiaojing CHEN2,Fengzhen LIU2,Zhi SUN3   

  1. 1 School of Information and Control Engineering,China University of Mining and Technology,Xuzhou 221116,China
    2 Tiandi (Changzhou) Automation Co.,Ltd.,Changzhou 213015,China
    3 Department of Electrical Engineering,University at Buffalo,the State University of New York,Buffalo 14260,USA
  • Revised:2020-03-02 Online:2020-04-25 Published:2020-04-30
  • Supported by:
    The National Key Research and Development Program of China(2017YFC0804400)

摘要:

针对标准RAW机制无法适应网络环境变化做出调整,且分组依赖连续的AID问题,提出一种基于伪随机序列的RAW重分组方法。AP在关联阶段为节点分配一个伪随机序列作为地址码,在分组阶段采用分组复合码携带分组信息。该方法实现了非连续AID节点在线式重分组,减小了重分组的时间开销。为使RAW合理分配资源,解决组间负载不平衡问题,提出了基于期望信道时间的RAW重分组方法,以信道利用率为分组依据,优化了节点RAW组、RAW持续时间和RAW分组数。NS3仿真结果表明,所提方法显著提高了IEEE 802.11ah协议的网络性能。

关键词: 监测传感网, IEEE802.11ah协议, RAW机制, 伪随机序列

Abstract:

Aiming at the problem that the standard RAW mechanism cannot adjust to changes in the network and the grouping depends on continuous AIDs,a RAW regrouping method based on a pseudo-random sequence was proposed.The AP assigned a pseudo-random sequence to the node as the address code during the association phase,and used compound code to carry groups information during the grouping phase.It implemented online regrouping of discontinuous AID nodes and reduced the overhead of regrouping.In order to rationally allocate resources in RAW and solve the problem of load imbalance between groups,a RAW regrouping method based on expected channel time was proposed.Based on channel utilization,the RAW groups,RAW duration,and numbers of RAW were optimized.NS3 simulation results show that the proposed method significantly improves the performance of IEEE 802.11ah protocol networks.

Key words: monitoring sensor network, IEEE 802.11ah protocol, RAW mechanism, pseudo random sequence

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