摘要
针对基于物联网的智能抄表系统节点众多、可靠性要求高、网络拓扑多变的特点,提出了一种用于智能抄表系统的高效时分多址E-TDMA协议。该协议基于Mesh网络架构,采用分布式协同调度的方式局部调整节点的时隙分配,并能进行网络拓扑调整。此外,E-TDMA还提供差异服务。采用NS2对协议进行仿真比较,结果显示,E-TDMA具有更好的性能,为基于物联网的智能抄表系统提供了高效的信道接入和可靠的质量保证。
Smart meter reading system based on Internet of Things contains large number of nodes, and requires high reliability. In the system, network topology is variable. This paper presents E-TDMA, an efficient TDMA protocol, for the smart meter reading system. Based on Mesh network architecture, E-TDMA partly adjusts the slot allocation by distributed cooperative scheduling, and adjusts network topology if necessary. Besides, E-TDMA provides differentiated services. NS2 simulation results show that E-TDMA outperforms TDMA, and provides efficient channel access and reliable QoS for the smart meter reading system based on Internet of Things.
出处
《计算机工程与应用》
CSCD
2013年第21期37-41,共5页
Computer Engineering and Applications
基金
中央高校基本科研业务费专项资金资助(No.ZYGX2009J092)
航空科学基金(No.20110580002)
关键词
物联网
智能抄表系统
媒体接入
高效时分多址
分布式协同调度
Internet of Things
smart meter reading system
Media Access Control （MAC）
effective Time Division Multiple Access （TDMA）
distributed cooperative scheduling
