Provisioning geographic data-centric dissemination in wireless sensor networks

Authors:
Hyunjun Choi;Hwangnam Kim;Sunshin An;Minsu Kim;Young Ki Jeon
Affiliations:
School of Electrical Engineering, Korea University, Seoul, Korea;School of Electrical Engineering, Korea University, Seoul, Korea;School of Electrical Engineering, Korea University, Seoul, Korea;System Lab2, Telecommunication Division, Telecommunication Business, Samsung Electronics Co., Ltd., Suwon, Korea;System Lab2, Telecommunication Division, Telecommunication Business, Samsung Electronics Co., Ltd., Suwon, Korea
Venue:
ICUFN'09 Proceedings of the first international conference on Ubiquitous and future networks
Year:
2009

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Abstract

In this paper, we propose to enhance a data-centric dissemination framework with geographic information and network-level caching in wireless sensor networks. The proposed framework enhances data-centric routing with three principal components: (1) publish/subscribe paradigm to coordinate sources and sinks; (2) geographic diffusion to mitigate unnecessary data forwarding; (3) network-level caching to process data or reduce redundancy in message delivery. We implemented the framework in ns-2 simulator, and conducted a simulation study to evaluate its performance in comparison with existing routing protocols. The simulation results indicate that the framework enhances message delivery ratio, reduces message delivery overhead, and saves energy consumption, regardless of wireless link errors.