IoT network protocols comparison for the purpose of IoT constrained networks

In this paper, a comparison of Internet of Things protocols used for data transfer in Internet of Things constrained networks is presented. Setting up such a network with a large number of physical interconnected IoT devices can be a challenge. In the IoT world, one of the key challenges is to efficiently support M2M communication in constrained networks. This can be achieved using MQTT (Message Queuing Telemetry Transport) and CoAP (Constrained Application Protocol) protocols. Choosing the appropriate protocol can be difficult while developing IoT application. There are several conditions that need to be considered while determining which protocol should be used. In this paper, we will evaluate performance and compare these protocols through different scenarios.