Energy Efficient Design of Wireless Sensor Networks explores how to optimize energy supply in wireless sensor networks (WSNs), which is more complex than in conventional wired networks because it involves not only reducing the energy consumption of a single sensor node, but also maximizing the lifetime of an entire network. The book focuses on mobile wireless sensor networks characterized by poor connectivity, examining ways to exploit the mobility of nodes to optimize their energy consumption and maximize the lifetime of the entire network on two main levels, the neighbor's discovery phase and data transfer methods.