What is WIFI？

Basic understanding of WIFI

WIFI was originally the abbreviation for wireless fidelity. The full English name of Wi-Fi is wireless fidelity. In the context of wireless local area networks, it refers to “wireless compatibility certification”. It is essentially a commercial certification and also a wireless networking technology. , Used to connect to the computer through a network cable, but now it is connected to the network through radio waves; a common wireless router.

Wi-Fi Internet access can be simply understood as wireless Internet access. Almost all smart phones, tablets and laptops support Wi-Fi Internet access, which is the most widely used wireless network transmission technology today. In fact, the wired network signal is converted into a wireless signal, and the wireless router is used for the reception of related computers, mobile phones, tablets, etc. that support its technology. If the mobile phone has Wi-Fi function, when there is Wi-Fi wireless signal, it can go online without going through the network of China Unicom, saving the data charge.

How does Wi-Fi work?

On the technical side, the IEEE 802.11 standard defines the protocols that enable communications with current Wi-Fi-enabled wireless devices, including wireless routers and wireless access points. Wireless access points support different IEEE standards.

Each standard is an amendment that was ratified over time. The standards operate on varying frequencies, deliver different bandwidth, and support different numbers of channels.

802.11Standard rate and frequency band development history