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Today, the editor will share with you the relevant knowledge about what the common communication protocols of the Internet of things are. The content is detailed and the logic is clear. I believe most people still know too much about this, so share this article for your reference. I hope you can get something after reading this article. Let's take a look.

From the point of view of application, the Internet of things system can be divided into IoT devices, gateways, clouds and user terminals.

IoT equipment can be divided into two categories:

Because it supports TCP/IP, it can directly access the Internet of things, such as Wi-Fi, GPRS/3G/4G, etc.

One requires a gateway (to achieve protocol conversion), such as Zigbee, Bluetooth mesh and so on.

In fact, for some scenarios, such as terminal devices communicating through Bluetooth, the phone itself is the equivalent of a gateway. In our project, the device communicates with the phone through Bluetooth, and the terminal data communicates with the cloud through the Wi-Fi or 3G/4G module of the phone. So you can shield the underlying differences and just focus on the development of cloud services.

Common communication protocols of the Internet of things

In the application of the Internet of things, communication technologies include Wi-Fi, RFID, NFC, ZigBee, Bluetooth, LoRa, NB-IoT, GSM, GPRS, 3amp 4G network, Ethernet, RS232, RS485, USB and so on. Introduction to the mainstream communication technology of the Internet of things see > [graffiti footprint of the Internet of things] the mainstream communication mode of the Internet of things.

Related communication protocols (protocol stack, technical standard) include Wi-Fi (IEEE 802.11b), RFID, NFC, ZigBee, Bluetooth, LoRa, NB-IoT, CDMA/TDMA, TCP/IP, WCDMA, TD-SCDMA, TD-LTE, FDD-LTE, TCP/IP, HTTP and so on.

Note: 3GPP divides the development of 5G technical standards into two phases. The first phase of the original plan will be published as part of R15 by the end of 2018 and will only be targeted at NR. The second phase of the standard will be part of R16 by the end of 2019, including the entire 5G architecture (including the core network).

The communication protocols used in the technical framework of the Internet of things are: HTTP/HTTPS, CoAP, MQTT and so on. As shown in the following figure:

Comparison of application layer protocols

Physical layer / data link layer protocol comparison above is all the content of this article "what are the common communication protocols of the Internet of things?" Thank you for reading! I believe you will gain a lot after reading this article. The editor will update different knowledge for you every day. If you want to learn more knowledge, please pay attention to the industry information channel.

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