A New Distributed Localization Algorithm for ZigBee Wireless Networks
Node localization becomes an exciting research area for recently large emergence of ZigBee based wireless applications, where received signal strength indication is adopted as a coarse but simple method on range measurement. Compared with the centralized approach, distributed algorithm that nodes locally calculate their own position coordinates can significantly reduce location-related network traffic; however, this is an intensive process. Unlike commercial digitalhardware-block based method used in CC2431, we propose a novel distributed algorithm that can be implemented based on common 8-bit MCU. In this algorithm, instead of ‘log-normal, ‘piecewise linear path loss model was established, which let only linear operation when estimating range from RSSI. Besides, min-max method, other than maximum likelihood estimation method, was used to simplify coordinate calculation. Furthermore, ZigBee compatible sensor node modules were developed to carry out the contrast experiments, and results demonstrate the new method has close or even better precision compared with basic algorithm, but with lower cost.
ZigBee Node localization RSSI Distributed algorithm
J. Chen X.J. Wu P.Z. Wen F. Ye J.W. Liu
Harbin Institute of Technology Shenzhen Graduate School, Shenzhen 518055, China Guilin University of Electronic Technology, Guilin 541004, China
国际会议
2009年中国控制与决策会议(2009 Chinese Control and Decision Conference)
广西桂林
英文
4451-4456
2009-06-17（万方平台首次上网日期，不代表论文的发表时间）