Sensor Activity Scheduling for Efficient WSN-based Tracking

With the advance of sensing technologies and its applications, sophisticated (i.e., mobile, wireless) sensor networks are gaining increasing interest. Although such networks allow to implement interesting tracking functionalities, their performance is severely affected by energy limitations. This paper introduces an activity scheduling protocol that extends the network lifetime while the area coverage is kept unchanged. A cost-benefit analysis is conducted in order to assess the cost of the additional number of sensors that should be deployed to implement our protocol. Simulation results show that the proposed approach outperforms the existing scheduling techniques.