A sweep coverage with two tier architecture for wireless sensor network which is based on Genetic Algorithm and mobile assisted carriers was proposed, called GATSC. In GATSC, the authors firstly distribute the POIs to the mobile sensor nodes to cover and generate mobile node paths without overlapping. Secondly, the mobile sensor node meets with the mobile assisted carrier at a special point that is the nearest point away from the sink node on the mobile node path named POB. Lastly, the mobile assisted carrier transport the data to the sink node to complete the data collection. The simulation results shows that this method not only achieves better performance than existing approaches but also adapts to different network scenarios.
