Toward Reliable and Efficient Reporting in Wireless Sensor Networks

Energy efficiency is one of the major concerns in wireless sensor networks, since it impacts the network lifetime. In this paper, we investigate the relationship between sensor network performance, particularly its lifetime, and the number of active reporting nodes N by using both analytical and simulation approaches. We first demonstrate that decreasing the number of reporting nodes increases the number of reports that need to be sent to the sink in order to achieve the desired information reliability regarding a detected event. On one side, we show that reducing the number of reporting nodes reduces the probability of collision occurrence. Based on these results and as the first main contribution, we derive the optimal number of reporting nodes Nopt energy that minimizes the energy consumed to report reliably the occurrence of an event. In other words, we prove that limiting the reporting tasks of a detected event to a small subset of sensor nodes (i.e., Nopt energy), instead of usin...

• Type: Journal
• Year: 2008
• Where: TMC
• Authors: Fatma Bouabdallah, Nizar Bouabdallah, Raouf Boutaba
• Keywords: Active Reporting Nodes, Reporting Nodes, Sensor Network, TMC 2008