• Deepak Singh
• Harish Kumar

Internet of Things is a most common and trending term between students and researchers. And it is a technology which could change the shape of world. Different types of devices required different type of protocol for communication. There are some problems in WSN like static allocation of sensor and nodes and gateway, small lifetime of participating nodes, loss of packets during delivery and end to end delay etc. To overcome these problems we require IOT based scenario. In IOT, TCP and UDP are used as transport layer protocols to achieve QoS for IOT devices. In IOT applications existing transport and security protocols like TCP/ UDP and TSL/DTLS are not suitable for connection overhead, latency, and connection migration. In this paper, we have highlighted the protocols that are used in the application layer and transport layer. We have discussed about the CoAP, MQTT, XMPP, LwM2M and AMQP.

IoT, CoAP, MQTT, XMPP, LwM2M and AMQP Protocols.

"A SURVEY OF PROTOCOLS USED IN IOT AT APPLICATION LAYER AND TRANSPORT LAYER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.82-86, May-2019, Available :http://www.jetir.org/papers/JETIR1905115.pdf

"A SURVEY OF PROTOCOLS USED IN IOT AT APPLICATION LAYER AND TRANSPORT LAYER", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp82-86, May-2019, Available at : http://www.jetir.org/papers/JETIR1905115.pdf