Abstract
We consider a hybrid wireless sensor network with static and mobile nodes. Static sensors monitor the environment and report events occurring in the sensing field. Mobile sensors are then dispatched to visit these event locations to conduct more advanced analysis. The sensing field may contain obstacles of any shape and size. A big challenge is how to dispatch the mobile sensor to the event location without colliding with any obstacles and in a shortest path. Therefore the objective of the paper is to dispatch the mobile sensor to the event location in a hybrid wireless sensor network in the presence of obstacles. Our solution proposes a simple way to dispatch the mobile sensor to the event location in the presence of obstacle. This paper contributes in defining a more general and easiest dispatch solution in the presence of obstacle. Index terms: Collision-Free Path, Mobile Sensor, Hybrid WSN, Global Positioning System, Dispatch, Static WSN.
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