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Created by Mark Anderson
The following article is taken from the link below.
http://www.sensorsmag.com/articles/0500/72/main.shtml

The article talks about differnet wirelless sensor network that will proliferate in coming years. As wireless sensors come onto the market and become a practical option, sensor networks take on a whole new dimension. The question arises: How can traditional network topologies be adapted to the new communications medium?

The development of network technologies has prompted sensor folks to consider alternatives that reduce costs and complexity and improve reliability. Early sensor networks used simple twisted shielded–pair (TSP) implementations for each sensor. Later, the industry adopted multidrop buses (e.g., Ethernet). Now we’re starting to see true web-based networks (e.g., the World Wide Web) implemented on the factory floor.

The figure shows point-to-point network toplogy. In point-to-point network topologies, each sensor node requires a separate twisted shielded–pair wire connection. The cost is high, configuration management is difficult, and nearly all the information processing is done by the host.

As wireless sensors become real commodities on the market, new options or new arguments for old options are causing professionals to consider network strategies once ruled out. Let’s look at the three classic network topologies (point-to-point, multidrop, and web), assess their strengths and weaknesses, and look at how the rules have changed now that wireless systems are coming online.

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