A Distributed Dynamic Channel Assignment and Routing Framework for Cognitive Sensor Systems

Celimuge WU  Satoshi OHZAHATA  Yusheng JI  Toshihiko KATO  

IEICE TRANSACTIONS on Information and Systems   Vol.E97-D   No.10   pp.2613-2622
Publication Date: 2014/10/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2013THP0012
Type of Manuscript: Special Section PAPER (Special Section on Frontiers of Internet of Things)
sensor networks,  routing protocols,  channel assignment,  cognitive radio,  

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With the increase of the number of wireless sensing or metering devices, the collection of sensing data using wireless communication becomes an important part of a smart grid system. Cognitive radio technology can be used to facilitate the deployment of smart grid systems. In this paper, we propose a data collection and dissemination framework for cognitive radio smart grid systems to fully utilize wireless resources while maintaining a reliably connected and efficient topology for each channel. In the proposed framework, each sensor node selects a channel considering the primary user (PU) channel utilization and network connectivity. In this way, the data collection and dissemination can be performed with a high reliability and short delay while avoiding a harmful effect on primary users. We use computer simulations to evaluate the proposed framework.