What is the difference between WLAN and WiFi?

WLAN wireless internet, its full name is: Wireless Local area Networks, the Chinese explanation is: Wireless LAN, is a use of radio frequency (Radio Frequency RF) technology for transmission of the system, This technology is not used to replace the cable local area network, but to make up for the shortage of wired local area network, in order to reach the goal of network extension, so that wireless local area network can use a simple access architecture to enable users through it, without network cable, no distance restrictions of the unobstructed networks. WLANs use the ISM (Industrial, Scientific, medical) radio broadcast band to communicate. The 802.11A standard for WLANs uses the 5 GHz band to support the maximum speed of Mbps, while the 802.11B and 802.11g standards use the 2.4 GHz band to support the maximum Mbps and Mbps speeds respectively. At present, WLAN contains protocol standards: IEEE802.11B protocol, IEEE802.11A protocol, ieee802.11g protocol, IEEE802.11E protocol, ieee802.11i protocol, Wireless Application Protocol (WAP).

WIFI (wirelessfidelity, wireless fidelity) is a brand based on the IEEE 802.11 series standard Wireless network communication technology, designed to improve interoperability between wireless network products based on IEEE 802.11 standards, by Wi-Fi Federation (Wi-Fi Alliance holds, in short, WiFi is a wireless networking technology that used to connect computers over the Internet, and now it's connected by radio waves. And Wi-Fi Alliance (also known as: Wireless LAN Standardization Organization WECA) was founded in 1999, when the name is called Wireless Ethernet Compatibility Alliance (WECA), in October 2002, officially renamed Wi-Fi Alliance.

What are the differences between WLAN and WiFi?

Difference one: WiFi is included in the WLAN, the power of transmitting signal is different, the coverage range is different

In fact, WiFi is a trademark of the Wlana (Wireless LAN Alliance), which only guarantees that the goods using the trademark can co-operate with each other, not in fact related to the standard itself, but because WiFi The main use of the 802.11B protocol, so people are becoming accustomed to using WiFi to address the 802.11B protocol. In terms of inclusion, WiFi is a standard for WLANs, which are included in WLANs and are part of a new technology in WLAN protocol adoption. WiFi coverage of up to 300 feet (about 90 meters), the largest WLAN (plus antenna) can reach 5KM.

Difference two: The coverage of the wireless signal range is different

WIFI (Wireless Fidelity), also known as the 802.11B Standard, its biggest advantage is the high transmission speed, can reach 11Mbps, in addition to its effective distance is also very long, but also with the various 802.11DSSS equipment compatible. Wireless internet has become a reality. Radio waves cover a wide range of Bluetooth technology based radio coverage is very small, the radius of about 50 feet about 15 meters, and Wi-Fi radius of up to 300 feet about 90 meters, the office from needless to say, is in the whole building can also be used. But with the development of WiFi technology, the future coverage of WiFi signals will be wider.