Skander Azzaz
ABSTRACT
Fault-tolerance is one of the main issues in Wireless Sensor Networks (WSNs) where applications require a continuous service. In this paper, we show how to use a small number of mobile robots to handle failures that may occur in the WSN. We study two strategies: Centralized Manager Strategy (CMS) and CMS with anticipation noted by CMS* to detect, report sensor failures and coordinate the movement of robots. The goal is to minimize the dysfunction time and avoid the coverage and connectivity degradation of the network upon a failure. The CMS is based on the Centralized Manager Algorithm [1] that we improve to ensure that the central manager robot receives a report upon an occurred failure. This manager robot selects a maintainer robot to replace the failed sensor. However, in the CMS* we propose, the manager robot anticipates the sensor failure and reacts before it happens using an energy state model representing the behavior of a sensor based on a discrete time Markov chain.
- Y. Mei, C. Xian, Y. Charlie, Repairing Sensor Network Using Mobile Robots, WWASN, 2006.Google Scholar
- Y. Gao, K.Wu, and F. Li, Analysis on the redundancy of wireless sensor networks, WSNA, 2003. Google ScholarDigital Library
- S. Tang, An analytical traffic flow model for cluster-based wireless sensor networks, Pervasive, 2006.Google Scholar
- M. Khan, Z.A. Belleudy and C. Auguin, Analytical Model for Energy Consumption Analysis in Grid Based Wireless Sensor Networks, New Technologies, Mobility and Security, 2009. Google ScholarDigital Library
- A. Deokwoo Jung; Savvides, An Energy Efficiency Evaluation for Sensor Nodes with Multiple Processors, Radios and Sensors,INFOCOM 2008.Google Scholar
- S. Mahfoudh, Energy effciency in wireless ad hoc and sensor networks: routing, node activity scheduling and cross-layering,thesis INRIA, 2010.Google Scholar
- A. Nemra and N. Aouf, Robust INS/GPS Sensor Fusion for UAV Localization Using SDRE Nonlinear Filtering, Sensors Journal, 2010.Google Scholar
- The Network Simulator ns-2,http://www.isi.edu/nsnam/ns.Google Scholar
- C. Perkins, E. Belding-Royer and S. Das, Ad hoc On demand Distance Vector (AODV) Routing, IETF RFC 3561, 2003. Google ScholarDigital Library
- Y. Mei, Y.-H. Lu, Y. C. Hu, and C. G. Lee, A Case Study of Mobile Robot's Energy Consumption and Conservation Techniques, ICAR, 2005..Google Scholar
Index Terms
- Repairing sensors strategies in fault-tolerant wireless sensor networks
Recommendations
The Three-Tier Security Scheme in Wireless Sensor Networks with Mobile Sinks
Mobile sinks (MSs) are vital in many wireless sensor network (WSN) applications for efficient data accumulation, localized sensor reprogramming, and for distinguishing and revoking compromised sensors. However, in sensor networks that make use of the ...
Distributed Multilevel k-Coverage Energy-Efficient Fault-Tolerant Scheduling for Wireless Sensor Networks
AbstractThe expected k-coverage, prolonged network lifetime, and fault-tolerance capabilities play a vital role in the success of various application operations in Wireless Sensor Networks (WSNs), as they are the key performance indicators of WSNs. The k-...
Multi-level clustering architecture and protocol designs for wireless sensor networks
WICON '08: Proceedings of the 4th Annual International Conference on Wireless InternetWireless sensor network (WSN) consists of sensors for measuring and gathering data in a variety of environments. These sensors, with the size and battery constraints, usually have limited transmission ranges due to the low-power wireless radio ...
Comments