Rest-based sensor networks with OData

• Published in: 11th Annual Conference on Wireless On-Demand Network Systems and Services, IEEE/IFIP WONS 2014 - Proceedings pp. 33 - 40
• Main Authors: Thoma, Matthias, Kakantousis, Theofilos, Braun, Torsten
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-01-2014
• Subjects: Application protocols; Connecting system; Data models; Energy utilization; Enterprise interoperability; Enterprise networks; Gateway devices; Gateways (computer networks); Industrial research; Industry; Internet of things; Interoperability; Logic gates; Protocols; RESTful Services; Semantics; Sensor networks; Sensor nodes; Technical interoperability; Temperature sensors; Web environment; Wireless sensor networks; XML
• ISBN: 9781479949373; 147994937X
• DOI: 10.1109/WONS.2014.6814719

RESTful services gained a lot of attention recently, even in the enterprise world, which is traditionally more web-service centric. Data centric RESfFul services, as previously mainly known in web environments, established themselves as a second paradigm complementing functional WSDL-based SOA. In the Internet of Things, and in particular when talking about sensor motes, the Constraint Application Protocol (CoAP) is currently in the focus of both research and industry. In the enterprise world a protocol called OData (Open Data Proto-col) is becoming the future RESTful data access standard. To integrate sensor motes seamlessly into enterprise networks, an embedded OData implementation on top of CoAP is desirable, not requiring an intermediary gateway device. In this paper we introduce and evaluate an embedded OData implementation. We evaluate the OData protocol in terms of performance and energy consumption, considering different data encodings, and compare it to a pure CoAP implementation. We were able to demonstrate that the additional resources needed for an OData/JSON implementation are reasonable when aiming for enterprise interoperability, where OData is suggested to solve both the semantic and technical interoperability problems we have today when connecting systems.