物联网传输协议MQTT与CoAP比较与应用

Comparison of Io T protocols MQTT and Co AP and their applications

目前在物联网(Io T)领域还没有一个可以适用于所有场景的传输协议。在众多的物联网传输协议中,两个轻量级协议目前应用得最为广泛:MQTT(Message Queue Telemetry)和Co AP(Constrained Application Protocol)。文章从协议特点、实现方式、适用场景等方面对这两个协议进行对比,并进行了服务器端的连接测试仿真,根据两个协议的特点与仿真结果提出了不同应用场景下Io T传输协议选取的建议。

At present, in the field of emerging Internet of Things（Io T）, there is no transmission protocol can be applied to all scenarios. Among the many Io T protocols, two lightweight protocols are currently the most widely used： MQTT（Message Queue Telemetry） and Co AP（Constrained Application Protocol）. This paper compares the two protocols from the characteristics of the protocol, the ways of implementation and the application scenarios, and simulates the server-side connection test. According to the characteristics of the two protocols and the simulation results, the proposal of selecting Io T transmission protocol in different application scenarios is put forward.