Applications, Models, Problems, and Solution Strategies
Hai Liu, Amiya R. Nayak, Ivan Stojmenović · 2010
This chapter first elaborates on wireless sensors; then on wireless sensor networks (WSNs), their properties, models, and application types. Afterwards, it adds actuators to the model and discusses various combinations of sensors and actuators that can form a heterogeneous network with different levels of complexity. The majority of the existing applications for “wireless” sensors rely on a single-hop wireless network to reach a base station (BS) for further processing of the measured phenomena. WSNs usually operate in a multi-hop fashion. There are three types of applications for WSNs and each has its corresponding data communication modes: event-driven, periodic, and on-demand reporting. Hop count can be used as a metric for routing in unit disk graph (UDG) if each node applies the same and fixed transmission power. Wireless sensor actuator networks (WSANs) are emerging as the next generation of WSNs. Controlled Vocabulary Terms actuators; base stations; wireless sensor networks