Contents I. Introduction
A networked sensor system is a collection of spatially distributed sensors that are networked. Applications of networked sensor systems include habitat monitoring, animal tracking, forest-fire detection, precision farming, and disaster relief applications [11], [13]. In recent years, networked sensor systems have been implemented in control systems such as robot control systems [2], [8] and target tracking systems [14]. Sensors in a networked sensor system are usually connected wirelessly, and each sensor operates with a battery power source. It is therefore desired for each sensor to prolong the battery life, or equivalently, to achieve power saving [7]. For power saving, the wireless communication of sensors should be restricted, since it takes much power. One of approaches to solve the problem is to select available sensors dynamically. This process is called sensor scheduling.
