Ubiquitous Sensor Networks

Abstract

Ubiquitous computing is a new concept that could be defined as a technology which can be available anywhere that it is useful and economically viable to expect to find a sensor. Sensor network is recognized to be a key technology for building a ubiquitous system. Small physical dimensions of sensor nodes are often one of the musts in a typical ubiquitous network, since it is dedicated to unobtrusive integration into living, working, scientific, industrial, and other environments. This implies high integration of sensing, computing, and communication capabilities of the devices meeting at the same time application-specific demands. Using mostly wireless infrastructure, ubiquitous technologies are supposed to interface the physical environment in various circumstances such as military, home, working, health, industry, etc. This makes implementation of the ubiquitous sensing highly application-specific. Interfacing issues along with the interoperability between different technologies are the most demanding parts of the system design. Many constraints here bring up challenges in various engineering fields such as sensing, energy conservation, communication, security issues, etc. These issues are often complementary coupled, which makes the process of finding the optimal solution more complicated.