How to understand the Wi-Fi mesh network to better use the Wi-Fi system?

As our houses become smarter, we will need better Wi-Fi systems. In order to make the most of your smart home devices, you not only need to have signal coverage in every corner of the house to consistently obtain reliable Wi-Fi, but also need to provide reliability for the security cameras and video doorbells around the house and outdoor Wi-Fi connection. Relying on traditional WiFi technology is basically unlikely, so the best way to get good Wi-Fi wherever needed is to replace the old router with a new Wi-Fi mesh system.

In a nutshell, Wi-Fi Mesh (also known as "Full House Wi-Fi") creates a single Wi-Fi network around your living space through a base station router connected to a network modem, and then places a series of clients around you node. If you need more Wi-Fi signals to cover a distant area of your home, just add another node. Each of these nodes sends out the same Wi-Fi signal, so no matter which node your device is connected to, the network has the same name and password, and a stable network connection.

First, Wi-Fi is a radio technology. Any device with Wi-Fi can receive and transmit digital signals, such as data, audio, or video. Wi-Fi signal coverage is usually about 150 feet (45 meters), but only under ideal field conditions. Because Wi-Fi is a radio, it is subject to interference from other radio signals (such as microwave ovens) and physical barriers (such as walls, ceilings, and floors). The thicker the barrier, the stronger the concrete or steel, the smaller the signal range, the weaker the signal.

In most homes, a good Wi-Fi connection may only be within 40-50 feet of the router, and only in multiple layers directly above or below the router room. Because smart home devices such as cameras, video doorbells, and smart speakers need a good and stable Internet connection, you need to spread a layer of fast Wi-Fi throughout the home. For this, you will need a mesh network.

Wi-Fi has two frequency bands: 2.4GHz and 5GHz. The signal sent on 2.4 GHz travels farther, but the transmission efficiency is not as good as the signal sent on 5 GHz. On the contrary, the propagation distance of the 5GHz signal is not far, but the amount of data that can be transmitted is about 10 times higher than that of 2.4GHz. In each of these frequency bands, there are many channels carrying signals; the frequency band is regarded as a highway, and the channel is regarded as each lane on the highway.

There are also different versions of consumer Wi-Fi: chronologically b, g, n, ac, and the most recent ax, all of which are named after IEEE 802.11. Compared with previous standards, each protocol can provide higher speed and more reliable connection. The Wi-Fi Alliance launched a simpler Wi-Fi ID system in 2018: since then, Wi-Fi is now called Wi-Fi 5, and ax Wi-Fi is called Wi-Fi 6, although the earlier Nomenclature may continue to exist. The standard used by router or mesh system users is usually indicated in the model-router models beginning or ending with AC use ac or Wi-Fi 5.

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