5G can play its own powerful role through many applications of the Internet of Things: smart agriculture, smart logistics, smart home, car networking, smart city, etc.

5G refers to the fifth-generation mobile phone mobile communication standard, also known as the fifth-generation communication technology. Compared with 4G networks, 5G has more powerful communication and bandwidth capabilities, which can meet the requirements of high-speed stability and wide coverage of IoT applications.

The main function of DTU is to wirelessly transmit data from remote devices back to the back-end center. To complete data transmission, a complete data transmission system needs to be established. GPRS DTU is a wireless data terminal for the Internet of Things, which uses the public operator's network GPRS network (also known as G network) to provide users with wireless long-distance data transmis···

The main differences between LoRaWAN and 3GPP:Another major difference between LoRaWAN and 3GPP is the use of unlicensed spectrum. LoRaWAN allows easy deployment of "campus" networks (smart cities, smart buildings, smart airports, smart factories) with thousands of devices in a small area. The corporate network can be completely under the control of the customer, and the data is still encrypted en···

Many people confuse the two concepts of LoRaWAN and LoRa. In fact, LoRaWAN refers to the networking protocol of the MAC layer. And LoRa is just a physical layer protocol. Although the existing LoRaWAN networking basically uses LoRa as the physical layer, the LoRaWAN protocol also lists that GFSK can also be used as the physical layer in some frequency bands.

IoT gateway can integrate the data collected by different terminals and transmit it to the next level to complete the transmission of information between each level. The IoT gateway can realize the protocol conversion between perception networks and communication networks, as well as between different types of perception networks; it can realize both wide area network communication and local area ···

MQTT and Modbus can complement each other to improve the performance of the Internet of Things. Using Modbus as a local interface to manage devices, and using MQTT as a global protocol to expand the range of devices, both have played an important role.

When the communication distance is tens of meters to thousands of meters, the RS-485 serial bus standard is widely used. RS-485 uses balanced transmission and differential reception, so it has the ability to suppress common mode interference. The standard value of the maximum transmission distance of the RS-485 interface is 4000 feet (about 1219 meters), which is actually up to 3000 meters. In add···

Serial port and COM port refer to the physical interface form (hardware). And TTL, RS-232, RS-485 refer to the level standard (electrical signal).

Modbus gateway can be called Ethernet communication gateway, it can realize the conversion between Modbus RTU/ASCII and Modbus TCP protocol. The Modbus protocol is divided into two types, one is Modbus RTU (or ASCII) based on RS485, and the other is Modbus TCP based on Ethernet. Modbus gateway is a converter that converts Modubs RTU device data into Modbus TCP data.