In the 4G era, this problem was actually not solved well, and the network on the high-speed rail was intermittent. The speed of 500km/h will produce a serious Doppler effect, and there will be some challenges for frame format processing. In addition, the extremely fast speed may produce frequent handoffs, which also poses some challenges to the stability of the data link.

The full name of 5G is the fifth-generation mobile communication technology, and the 5G network and 5G frequency band are completely different things in the 5G concept. It can be said that the 5G frequency band is the basic resource of 5G communication, and the 5G network is the application basis of 5G communication.

Ethernet can be connected to the internet so that it can realize long-distance communication and realize monitoring on a global scale, which is not possible with RS485.When multiple RS485 devices are needed to connect to the computer, the traditional way is to use a multi-serial port card, that is, use the extended serial port on the computer to implement multiple RS485 serial ports.

Through DTU products, devices can transmit data wirelessly. No matter how far apart they are, they can interact and process data through a wireless network.

What is the DTU in the Internet of Things? The Chinese name of DTU is "wireless data transmission terminal". According to the different transmission methods and networks used in data transmission, DTU devices can be divided into many types, such as: 4G DTU, NB-IOT DTU , LORA DTU, GPRS DTU.

Industrial computers generally use assembly lines and internal installation of independent equipment, which is inconvenient for wired broadband access and wifi networking. Therefore, 4G communication module industrial-grade plug-in IoT sim card wireless routing is the main method for industrial computer networking.

Compared with ordinary routers, 4G industrial routers can connect more network devices. 4G industrial routers can connect at least two or more network devices, and can connect hundreds of IPs to the Internet at the same time. Such efficient operation must be equipped with powerful The blessing of forwarding performance and the number of tape drives can be realized;

Under normal circumstances, factory production will use this "monster" to solve a variety of complex problems, thereby simplifying the problem and greatly improving the efficiency of the factory.And ordinary home routers can only meet a certain range, low efficiency, low strength, low density, forwarding performance and limited tape drive capacity.

Whether it is 4G industrial routers or routers of other networks, their working principles are roughly the same;It's just that more 4G industrial routers will be used in the industry. Because 4G industrial routers are adaptable to resist harsh external environments, the software and hardware coordination capabilities of 4G industrial routers will be stronger.

When customers want to buy 4G industrial routers, they don't know which brand is good, which brand is reliable, and which brand is trustworthy.So the question is, how to choose a 4G industrial router?What is the basis for selection? What 4G industrial router should I choose? The overall process can be divided into 5 steps: