An Inter-Networking Mechanism with Stepwise Synchronization for Wireless Sensor Networks

Sensors

Hiroshi Yamamoto¹  Naoki Wakamiya² 

[1] Graduate School of Information Science and Technology, Osaka University, 1-5 Yamadaoka, Suita, Osaka 565-0871, Japan;

关键词: wireless sensor network;    synchronization;    pulse-coupled oscillator model;   

DOI  :  10.3390/s110908241

来源: mdpi

【 摘 要 】

To realize the ambient information society, multiple wireless networks deployed in the region and devices carried by users are required to cooperate with each other. Since duty cycles and operational frequencies are different among networks, we need a mechanism to allow networks to efficiently exchange messages. For this purpose, we propose a novel inter-networking mechanism where two networks are synchronized with each other in a moderate manner, which we call stepwise synchronization. With our proposal, to bridge the gap between intrinsic operational frequencies, nodes near the border of networks adjust their operational frequencies in a stepwise fashion based on the pulse-coupled oscillator model as a fundamental theory of synchronization. Through simulation experiments, we show that the communication delay and the energy consumption of border nodes are reduced, which enables wireless sensor networks to communicate longer with each other.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.