Abstract:
Smart dust is an emerging
technology made up from tiny, wireless sensors or motes. These large scale
networks of wireless sensors are becoming increasingly tractable. Advances in
hardware technology and engineering design have led to dramatic reductions in
size, power consumption and cost for digital circuitry, wireless communications
and Micro Electro Mechanical Systems (MEMS). This has enabled very compact,
autonomous and mobile nodes, each containing one or more sensors, computation
and communication capabilities, and a power supply. This paper gives a profound
description about the technology and also the working of a mote, which are very
tiny wireless sensors and also about the history. It also gives a detailed description
about types of transmission between sensors and the antennas. The optical mode
of transmission is most effective one. It also states the various challenges
faced for the development of mobile networking protocols for Smart Dust. The
missing ingredient is the networking and applications layers needed to harness
this revolutionary capability into a complete system. Thus we review the key
elements of the emergent technology of "Smart Dust" and outline the
research challenges they present to the mobile networking and systems
community, which must provide coherent connectivity to large numbers of mobile
network nodes co-located within a small volume.
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