Date Added: Apr 2010
Wireless sensor networks are now being considered for mission critical applications, which are often largely unattended and need to operate reliably for years. However, due to the real world communication, sensing and failure realities, clock drift, and node faults, the system performance may degrade significantly over time. It is highly desirable that these natural deteriorations can be monitored continuously and can be corrected with self-healing when necessary. In this paper, the authors introduce a dependency constraint directed self-healing scheme for wireless sensor networks.