- The two protocols most commonly used for IoT devices are MQTT and CoAP, which both belong to communication protocol.
- These two protocols are widely used in the communication of internet because of their respective characteristics and advantages.
IoT protocols refer to protocols used for communication and data transmission between devices in an IoT environment. These protocols can be divided into transmission protocol, communication protocol and industry protocol. They promote the data sharing and interconnection between different devices. The two protocols most commonly used for IoT devices are MQTT and CoAP, which both belong to communication protocol.
What is communication protocol
Communication protocol mainly runs on the traditional internet TCP/IP protocol, is used for data exchange and communication through the internet, such as MQTT, CoAP, AMQP and so on. The characteristic of these communication protocols is that they are based on the existing internet technology can achieve more efficient data transmission and lower power consumption. Due to the diversity of IoT devices and resource limitation, the communication protocols mainly used in IoT scenarios are lightweight, for example, CoAP/LWM2M protocol and MQTT protocol, which are designed for resource-limited environments.
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Two protocols most commonly used
1. MQTT(Message Queuing Telemetry Transport): MQTT is a lightweight messaging protocol that is widely used for communication between devices and servers. The MQTT protocol works like a publish-subscribe model in that allows different devices or clients to exchange messages through a piece of middleware called Broker. MQTT protocol has the following advantages: lightweight, high reliability, support asynchronous communication and offline messages, even if the device is not online can receive and send messages. Therefore, MQTT protocol is one of the most commonly used protocols in iot applications, helps devices to communicate efficiently, and provides a reliable and secure message passing mechanism for iot applications.
2. CoAP (Constrained Application Protocol): CoAP is a resource-oriented protocol designed for in constrained device and network environments to achieve low power, low bandwidth, and low latency communication. CoAP protocol not only supports transferring data, also supports querying resource status, triggering events and other operations, which makes it very suitable for use in the internet of Things. CoAP has a lower overhead, because it uses only a small amount of network resources to transfer data.
These two protocols are widely used in the communication of internet because of their respective characteristics and advantages. MQTT plays an important role in IoT applications due to its efficient messaging mechanism and reliability. And CoAP, because of its resource-oriented nature and low overhead, is suitable for use in resource-constrained IoT devices.
