Unquestionably, OMNeT simulator is functional to simulate the IoT protocols and this article is about the depiction of the functions of protocols such as DDS, MQTT and COAP along with OMNeT simulator.

• The message queue telemetry transport is abbreviated as MQTT and it is deployed in OMNeT++ simulation to perform the M2M communication in IoT based smart applications
• CoAP is used to perform the HTTP based communication in OMNeT++ simulation
• The utilization of data distribution service (DDS) is to perform the data transmission in real time systems operating in distributed environment

          Mainly, we have highlighted some protocols that are used for various types of applications.

• CoAP
• AMQP
• DDS
• XMPP
• MQTT
• ZigBee
• Bluetooth(BLE)
• 6LoWPAN