It is not recommended to merge 2.4g and 5g; because dual-band integration has advantages and disadvantages, some mobile phones may have difficulty connecting to dual-band WiFi; for general wireless routers, if there is no weak signal rejection function, then enable it After dual-band integration, the phone may always be connected to the 2.4G frequency band and will not switch to the faster 2.4G frequency band at all, unless the WIFI is turned on and off manually, so it is recommended to set it up separately.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
Should 2.4g and 5g be merged?
Merging is not recommended.
Dual-band routers have become popular, and some mainstream routers have begun to support dual-band technology, that is, 2.4G and 5G WiFi use the same SSID broadcast, and the terminal device automatically switches to 2.4 based on the signal and rate. G or 5G. So, is it better to combine dual-band or separate dual-band? What are the disadvantages of merging 2.4G and 5G?
The difference, advantages and disadvantages between 2.4G and 5G:
First of all, you need to understand that 2.4G and 5G of WIFI refer to a frequency band of radio waves.
Radio waves have a characteristic. The lower the frequency, the smaller the loss during propagation, so the coverage is wider. The higher the frequency, the opposite is true.
Difference 1: 2.4G has wider coverage than 5G. The 2.4GHz frequency band is relatively unaffected by obstacles, so the signal transmission distance is relatively long. However, throughput will be limited by backward compatibility, and it is difficult to plan the network using only 3 channels.
Difference 2: The channels in the 5G frequency band do not overlap with each other. 5GHz has 13 channels, which do not overlap and interfere with each other. In addition, there are not many devices in the 5G frequency band at present, so the 5G frequency band is like our highway, with only cars and not many cars, and our 2.4G frequency band, except for routers In addition, wireless headsets, mice, keyboards, microwave ovens, etc. are all in this frequency band, so the 2.4G frequency band is just like the roads in our cities. It is very crowded with not only cars, but also tricycles, pedestrians, etc.
Is it necessary to combine dual frequency into one?
The dual-band integration function began to appear on routers, which combines 2.4G and 5G WIFI signals into one signal. Only one SSID and password are set, and then the device can intelligently select the frequency band to access and automatically switch. The mobile phone uses the 5G frequency band first, and only when the 5G signal is weak, it automatically switches to the 2.4G frequency band with stronger penetration and longer transmission distance.
But the current problem is that although general routers can manually set dual-band into one, the mobile phone will not intelligently switch after connecting to a frequency band. For example, in the bedroom, the mobile phone automatically connects to the stronger 2.4G signal. When the mobile phone approaches the living room router, both the 2.4G and 4G signals are very strong, but the mobile phone is still connected to the slower 2.4G signal and will not automatically switch to the higher speed. Fast 5G signal.
Summary:
Dual-band integration has advantages and disadvantages. Some mobile phones may have difficulty connecting to dual-band WiFi. If a general wireless router does not have a weak signal rejection function, then after turning on the dual-band integration, the mobile phone may always be connected to the 2.4G frequency band and will not switch to the faster 2.4G frequency band at all, unless the WIFI is manually turned on and off. Therefore, it is recommended to set them up separately, such as Food and Food_5G, connect to 5G in the living room and 2.4G in the bedroom.
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