The sensor nodes of a wireless grain depot surveillance system are deployed in crystal grids, which provide lot of valid position information. To avoid the energy consumption unbalance of the single hop routing model adopted by LEACH prot

Advances in wireless sensor network (WSN) technology has provided the availability of small and low-cost sensor nodes with capability of sensing various types of physical and environmental conditions, data processing, and wireless communication. Vari

Wireless sensor networks with mobile sink are ex-pected to increase the flexibility for gathering information in large-scale sensing and detecting environments. Energy saving becomes one of the most important features of the sensor nodes to extend th