Supporting real-time communications using SDN-based MQTT

• Autor(a) principal: Costa, Pedro Afonso Lopes
• Data de Publicação: 2021
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10773/33927
• topic: Software-defined networking; MQTT; Internet of things; Industry 4.0.

The dissemination of devices typically used in the context of the Internet of Things in the industrial environment led to the adoption of protocols typical of these applications. Such protocols, however, were not designed for the industrial context and consequently do not support the Quality-of-Service level typically required in this type of environment, namely in terms of reliability and timeliness of the communications. One of the protocols typically used is MQTT, which, despite providing some Quality of Services mechanisms, does not fulfill for the requirements demanded by industrial environments. However, the use of Software-Defined Networking protocols can help to mitigate the limitations of the typical protocols of such equipment, complementing them with suitable Quality-of-Service mechanisms. MQTT v5.0 opened the possibility to extend the protocol through user defined properties. In this sense, this work proposes to use these properties and integrate the MQTT protocol with the OpenFlow protocol, allowing the Internet of Things devices to take advantage of the quality of services existing in Open- Flow to enable its use in industrial applications.