Análise de Desempenho dos Protocolos de Aplicação CoAP, MQTT e Radnet Protocol para Internet das Coisas

Abstract

The Internet of Things (IoT) is an area with significant advances, receiving much attention from researchers and industry. It enables the interconnection of everyday objects or devices, programmed hardware, software, sensors, actuators, and network connections to meet a variety of applications. Several application layer protocols that enable this communication have already been established. The appropriate choice of protocols in the application layer is fundamental to the performance, security, and functionality of a specific application. This layer is the closest to the end user, playing a crucial role in the interaction between applications and underlying network services. Thus, this research aims to analyze the performance of the CoAP, MQTT, and RadNet protocols in agricultural applications, emulating the network environment with Linux network namespaces. For the tests of all selected protocols, we combine three dimensions: three protocols, four quantitative metrics (RTT, latency, jitter and packet delivery rate), and three scalability metrics (message size, bandwidth, and number of devices). Applications for sending and receiving messages between clients and servers/brokers were developed.