Knowledge literacy in the 5G era: Understanding the Internet of Things

What is IoT

The Internet of Things (IoT) is abbreviated as IOT, which means the Internet of Things connected to each other. It is a network that extends and expands on the basis of the Internet to enable communication between things.

Simply put, all the objects around us have a chip that can be connected to the Internet, and objects can exchange information with each other.

The Internet of Things is another wave of information industry after computers, the Internet, and mobile Internet.

The Internet of Things is generally a wireless network. Through the physical network, it is possible to use a central computer to centrally manage and control devices and machines. At the same time, it is also possible to control home devices with mobile phones (smart home direction), etc.

What is the background of the birth of the Internet of Things?

The Internet of Things is the natural choice of the times and meets the development needs of human society.

Since the end of the 20th century, the global economy has continued to be sluggish, and there is an urgent need for the emergence of an emerging technology to promote productivity changes and become a new engine for economic growth.

In the late 20th century, the concepts of smart buildings and smart homes emerged in the United States and Europe. In 1995, Bill Gates made a detailed description of the application of IoT technology in home scenarios in his book "The Road Ahead", which gave people a preliminary understanding of IoT applications.

In 1999, MIT's Auto-ID Lab made the feasibility of IoT technology concrete.

The name of the Internet of Things came from the report "The Internet of Things" released by the International Telecommunication Union in 2005;

By 2009, IBM's three-step physical network strategy had received widespread response from industry and academia around the world.

China began to attach great importance to the Internet of Things technology in 2009

What are the architecture and components of the Internet of Things?

The Internet of Things mainly includes four levels: perception and control layer, network layer, and application layer.

Internet of Things

IoT Network Architecture

Physical Network Communication Protocol

It is necessary to understand this because traditional communication protocols such as the Http protocol are large in content and are not suitable for information dissemination under the Internet of Things.

Currently there are: MQTT protocol, CoAP protocol, AMQP protocol, etc.

Current Applications of IoT

Smart manufacturing, smart robots, smart homes, smart cities, smart transportation, autonomous driving, etc.