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Integrating Wireless Sensor Networks with the Web Host Publication: Extending the Internet to Low power and Lossy Networks (IP+SN 2011) Authors: W. Colitti, K. Steenhaut and N. De Caro Publication Date: Apr. 2011
Abstract: IPv6 over Low power Wireless Personal Area Networks (6LoWPAN) has accelerated the integration of Wireless Sensor Networks (WSNs) and smart objects with the Internet. At the same time, the Constrained Application Protocol (CoAP) has made it possible to provide resource constrained devices with RESTful web service functionalities and consequently to integrate WSNs and smart objects with the Web. The use of Web services on top of IP based WSNs facilitates the software reusability and reduces the complexity of the application development. This work focuses on RESTful WSNs. It describes CoAP, highlights the main differences with HTTP and reports the results of a simple experiment showing the benefits of CoAP in terms of power consumption compared to HTTP. The paper also describes the design and development of an end-to-end IP based architecture integrating a CoAP over 6LowPAN Contiki based WSN with an HTTP over IP based application. The application allows a user to access WSN data directly from a Web browser. The main system's building blocks and functionalities are described. External Link.
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