Leaving the era of mainframes computing
behind, we are now in the era of personal computing. The third wave of
computing i.e. ubiquitous has just begun where the processing environment
exists around us and ebbs into background of our lives. Recent developments of
such environments are being proposed and worked upon; Wireless Sensor Network
(WSN) being the foremost.
WSN is large scale distributed network
consisting of many arbitrarily installed small sensing nodes. These nodes are
small independent devices capable of performing sensing, processing and
communication. The main motivation, behind research into sensor networks, is
its military applications. Recent advances in WSN have opened up new
opportunities in ubiquitous applications in daily life. Thus, distributed
sensor networks represent an evolutionary development step towards smart
environments. The importance of sensor networks can be highlighted by the
number of prominent research projects funded by DARPA such as Smart Dust, NEST
etc.
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