Networked and Embedded Systems Laboratory

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Sensor networks are quickly becoming a flexible, inexpensive, and reliable
platform to provide solutions for a wide variety of applications in real-world
settings. For instance, sensor systems have been used for medical monitoring,
detection and classification for defense purposes, and to perform environmental
monitoring. The increase in the proliferation of sensor networks has paralleled
the use of more heterogeneous systems in deployments.
This thesis presents a framework that enables interoperability between varied
sensor systems and also details some of the fundamental capabilities needed in
such an environment. The ESP framework aims to provide a standard method to
manage, query, and interact with sensor network systems. We provide a method
to describe sensor systems using ESPml, a XML schema, as the modeling language.
The fundamental goal of the schema is to be able to describe sensors
in a simple, compact manner while still having the ability to represent essential
details such as the general setup, the type of data that can be provided, and the
commands that are available. In addition, we present a web services based frameix
work that provides the basic capabilities for locating, managing, and querying
the sensor systems. Finally, challenges such as authentication schemes, logging
services, context integrity, and client interfaces are also explored.

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