Ponte message broker bridge configuration using mqtt and coap protocol for interoperability of iot

Abstract

Internet of Things is emerging technology from few years where autonomous devices and technology communicate without human intervention. For IoT, many smart objects are interconnected and communicate through infrastructure of internet that is the base of a global network. The major challenge of IoT automation is to inter-connect heterogeneous devices, sensors and real-time application. Research has demonstrated recent development for a varied scope of solutions and devices of IoT eco-system. However, each interoperable technology provides its proprietary infrastructure and mechanism to communicate, which leads to IoT interoperability issue. Many research organizations, IoT industry and standardization institutes are working for empowering interoperability of resources between autonomous IoT devices. These efforts are categorized according to its implementation and usage considerations. The interoperable communication mechanism also depends on communication protocols and its communication models used at application layer. Major devices use MQTT, CoAP, RestAPI, AMQP and HTTP protocols at application layer for communication. This paper is intended to describe interoperability types and its impact on seamless communication. As a solution of interoperability issue, message bridge can be implemented between application layer protocols of request-response and publish-subscribe communication models. This paper demonstrate message bridge approach based on Ponte, which is open source IoT project designed by Eclipse for intercommunication between application layer protocols. The paper also demonstrates working of Ponte with the resolution of open issue related to message retention for cross protocol communication.