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Erschienen in:
19.02.2019 | Original Research Paper
SECoG: semantically enhanced mashup of CoAP-based IoT services
Erschienen in: Service Oriented Computing and Applications | Ausgabe 1/2019
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Abstract
One of the noticeable characteristics of the Internet-of-Things (IoT) devices is that they are resource-constrained, which makes them incompatible with the standard Internet protocols, e.g., HTTP. Nevertheless, IoT offers the Constrained Application Protocol (CoAP) as an alternative protocol for IoT devices where it is considered to be lightweight in regard to power consumption, network traffic, and so on. The main challenges associated with CoAP, however, still remain unsolved where most of the state-of-the-art approaches group servers manually and return the exact matches only. To address these issues, we propose a novel Semantically Enhanced CoAP Gateway (SECoG) for complex service mashups. SECoG enables users to create a simple or complex CoAP service mashup via a single HTTP request. Furthermore, a prototype implementation of SECoG was deployed on a real-world testbed to evaluate the proposed approach in terms of the reliability, execution time, network traffic, and accuracy.