| Scope and Method of Study. The applications of Wireless Sensor Networks (WSNs) are rapidly increasing. WSNs are used widely for collecting, storing, and sharing data in all kinds of applications. A typical wireless sensor network is usually composed of tiny sensors and one or several sinks, also called base stations. The sink is mainly for data collection and connecting to the control center.;Findings and Conclusions. Both mobile and static sinks have been proposed in the literature. However, which of these gives a better performance in terms of energy efficiency and packet reception rate has not been studied. In this thesis we investigate three configurations of sinks to measure and compare their performance. In the static configuration, both sinks are static. In the mobile scenario, both sinks are mobile. Finally in the hybrid model, one sink is static and the other is mobile. We look at the energy consumption and packet loss. In these three scenarios, our network consists of sixteen sensors with two robots serving as the sinks. Our results show that static configuration has the lowest packet loss rate, while hybrid and mobile configurations have a long lifetime. |
