Cloud-based Middleware for Syntactical Interoperability in Internet of Things

Abstract

Heterogeneity of protocol communications on the Internet of Things can lead to a syntactical interoperability problem. As far known as sensor nodes have different protocols of communication mechanisms with each other. But, sensor nodes should be able to send data with any kind of protocol communication to IoT applications in the cloud environment. So, the collected data is varied and not limited to specified sensor devices. A middleware that capable of works with much different protocol as a bridge between node sensor and IoT application is one best solution to answer a syntactical interoperability problem. This paper proposed a cloud-based middleware that provides a communication interface to receive data from sensor nodes based on Restful and CoAP. Received data then stored into heterogeneous IoT data storage based on the NoSQL database. Interoperability testing methodology was used for experiments and testing. The result shows proposed middleware can receive data from both protocols. The received data could store based on structure data or unstructured data on IoT data storage.