ABSTRACT
By commanding a large number of sensor nodes capable of sensing, computing, and communication, wireless sensor networks (WSNs) are edging toward wide deployment in a plethora of applications [1, 2]. The communication architecture of a typical wireless
9.6 Conclusions............................................................296 Acknowledgments ...........................................................296 References .........................................................................297
sensor network is illustrated in Figure 9.1. Usually, sensor nodes are scattered in the targeted field in either a random fashion or controlled manner. Each node senses its local environment, performs necessary computation and processing, and sends the sensory data through multihop or directly to the sink. The sink may be a fixed node or a mobile node capable of connecting the sensor network to an existing communication infrastructure where a user can access the reported data.
