{"id":85553,"date":"2021-11-22T11:09:52","date_gmt":"2021-11-22T05:39:52","guid":{"rendered":"https:\/\/techvidvan.com\/tutorials\/?p=85553"},"modified":"2021-11-22T11:09:52","modified_gmt":"2021-11-22T05:39:52","slug":"iot-protocols","status":"publish","type":"post","link":"https:\/\/techvidvan.com\/tutorials\/iot-protocols\/","title":{"rendered":"IoT Protocols – A Complete Guide"},"content":{"rendered":"

In this article, we will see some of the most common IoT protocols. So let\u2019s get started.\u00a0<\/span><\/p>\n

IoT Protocols<\/h3>\n

The wireless hardwares used in IoT are the <\/span>nodes <\/b>and the<\/span> base stations<\/b>. Nodes or <\/span>clients <\/b>are the devices that connect to the base stations. Base stations are the <\/span>routers <\/b>or <\/span>gateways<\/b>. We will discuss the protocols used between these devices.\u00a0<\/span><\/p>\n

Why are IoT protocols important?<\/span><\/h3>\n

The ability to interact with each other and resolve common problems is what separates Iot devices from traditional computers. These interactions are only possible if there is a medium or means of communication in the IoT ecosystem. The IoT protocols are thus a common \u201clanguage\u201d that allows devices to interact with other Iot devices. The IoT protocols lay\u00a0 down standards that are adopted in every Iot ecosystem for proper functioning and to avoid security threats.\u00a0<\/span><\/p>\n

There is no universal protocol that helps in communicating with all IoT devices yet. The OMA Lightweight protocol manages devices easily and offers adaptive solutions.\u00a0<\/span><\/p>\n

Types of IoT Protocols<\/h3>\n

IoT protocols are briefly classified into two types:<\/span><\/p>\n

1. IoT data protocols<\/span><\/h4>\n
a. Message Queuing Telemetry Transport(MQTT)<\/span><\/h5>\n

MQTT is one of the prime IoT protocols. MQTT protocol is a type of IoT communication protocol that is famous and is gaining popularity due to its transportation of messages through the <\/span>publish\/subscribe <\/b>messaging. It is lightweight and easily transfers data between two or more machines.<\/span><\/p>\n

Devices share information through a <\/span>broker or server<\/b>. Download the broker in your PC, MAC, Linux system or in Raspberry pie. The most common brokers available in the market these days are HIVEMQ and Mosquito.\u00a0<\/span><\/p>\n

MQTT is different to the regular client-server model. It divides clients into two groups. MQTT brokers act as a mediator and pass on the messages from the clients(publishers in MQTT) to the consumers who receive data on the other end(MQTT subscriber).\u00a0<\/span><\/p>\n

\"Message<\/a><\/p>\n

Base stations such as LPWAN receive messages from a sensor. The base station publishes the message on the MQTT broker. The broker passes on or forwards the message through the<\/span> TCP\/IP<\/b> protocols. Only those devices that subscribe to the given topic receive the messages.\u00a0<\/span><\/p>\n

b. Advanced Message Queuing Protocol<\/span><\/h5>\n

JPMorgan Chase& Co founded the AMQP protocol in 2003. This is an important protocol in IoT. It offers exchange of data within the network and it is open TCP\/IP protocol.\u00a0<\/span><\/p>\n

AMQP Protocol focuses mainly on banking systems and other businesses. It uses either the request-response messaging or the publisher-subscriber model.\u00a0<\/span><\/p>\n

Publishers generate messages and consumers at the other end pick those messages to process them. Message brokers make sure that the right message goes to the right consumer.\u00a0<\/span><\/p>\n

The brokers uses two components to achieve this as shown in the diagram:<\/span><\/p>\n