A ZigBee controlled lighting system with improved resistance to wireless interference

2014 IEEE Asia Pacific Conference on Wireless and Mobile Pub Date : 2014-10-13 DOI:10.1109/APWIMOB.2014.6920294

Jun Yao, Zhizhong Zhang, P. Dong, K. Holtman

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引用次数: 5

Abstract

Various wireless technologies, such as Wi-Fi, Bluetooth, and ZigBee (802.15.4), work in the 2.4GHz ISM (industrial, scientific and medical) band. As a low cost and low power wireless protocol, ZigBee is easy to be interfered by the other wireless communications such as Wi-Fi. In this paper, a new system architecture for ZigBee controlled lighting system is proposed to protect ZigBee networks against Wi-Fi interference. A router controller instead of an end-device remote controller is used to send the commands to all other nodes. In addition, a new algorithm called ZPA is adopted in the router controller by utilizing the RTS/CTS mechanism of Wi-Fi devices. Theoretical analysis indicates the packet loss rate is reduced by two aspects of this new architecture: Improved SINR and short collision time. Experiments on our testbed show that this system architecture is effective to reduce the PER of ZigBee networks under Wi-Fi interference. Especially, only requiring modifications to the router controller is practical for realistic deployment of ZigBee controlled lighting system.

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一个ZigBee控制的照明系统，提高了对无线干扰的抵抗力

各种无线技术，如Wi-Fi、蓝牙和ZigBee(802.15.4)，在2.4GHz ISM(工业、科学和医疗)频段工作。ZigBee作为一种低成本、低功耗的无线协议，容易受到Wi-Fi等其他无线通信的干扰。本文提出了一种新的ZigBee控制照明系统体系结构，以保护ZigBee网络免受Wi-Fi干扰。使用路由器控制器而不是终端设备远程控制器来向所有其他节点发送命令。此外，利用Wi-Fi设备的RTS/CTS机制，在路由器控制器中采用了一种新的算法ZPA。理论分析表明，该新架构从提高信噪比和缩短碰撞时间两个方面降低了丢包率。实验结果表明，该系统架构能够有效降低Wi-Fi干扰下ZigBee网络的PER。特别是，只需修改路由器控制器即可实现ZigBee控制照明系统的实际部署。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 IEEE Asia Pacific Conference on Wireless and Mobile

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