Tiling-Based Localization Scheme for Sensor Networks Using a Single Beacon

AbdelSalam, Hady S.; Olariu, Stephan; Rizvi, Syed R.

doi:10.1109/glocom.2008.ecp.157

Cited by 9 publications

(1 citation statement)

References 7 publications

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“…1 Furthermore, we assume that each task requires the cooperation of a workforce of w sensors, and consumes one unit of energy from each sensor. (5) The network uses any of the well known localization protocols to localize sensors [2], so each sensor is aware of its current location. Based on sensor location, task location, and sensor sensing range R, each sensor can determine whether it is able to participate in a given task or not.…”

Section: System Modelmentioning

confidence: 99%

Energy-Aware Task Assignment and Data Aggregation Protocols in Wireless Sensor Networks

AbdelSalam

Rizvi

Olariu

2009

2009 6th IEEE Consumer Communications and Networking Conference

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In a typical sensor network environment, sensor energy is considered a precious resource that must be used wisely and only if necessary. Energy-unaware task assignment protocols can deplete the energy of some sensors much more than they do for others. This results in reducing network density around those heavily loaded sensors and eventually creates energy holes that isolate the network into separated islands. These problems have negative impacts on network durability and reliability. To avoid these problems, we propose and evaluate a lightweight management protocol that assigns tasks to sensors based on their energy so that energy consumption is almost even among network sensors. In addition, we propose another mechanism to aggregate data collected by sensors before sending them back to the base station. Our aggregation mechanism supports different aggregation functions including exact evaluation of the minimum, the maximum, and the logical OR and an approximation of the average of the collected sensory data. Using simulation, we compare the lifetime achieved by assigning tasks to network sensors using the proposed protocol against another energyneutral protocol. Simulation results verified that the proposed approach increases network durability by balancing task load among sensors. Also simulation shows that, under reasonable parameters, the error in the approximated value of the average is less than %3.

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Section: System Modelmentioning

confidence: 99%