What is the relationship between WI-FI and WLAN?

This article mainly gives you a detailed introduction of the relationship between WI-FI and WLAN, and give you a detailed introduction, I believe you have read this article will have a clearer understanding of WLAN and WI-FI.

WLAN is short for Wireless Local Area Network. It refers to the application of Wireless communication technology to interconnect computer devices to form a Network system that can communicate with each other and share resources. The essence of a wireless LAN is that it no longer uses communication cables to connect computers with the network, but is connected in a wireless way, making the network construction and terminal mobility more flexible.

The WLAN communication system is used in the same building as an alternative to a wired LAN. WLAN uses the ISM (Industrial, Scientific, and Medical) radio broadcast frequency band for communication. The WLAN 802.11a standard uses a 5 GHz band and supports a maximum speed of 54 Mbps. The 802.11b and 802.11g standard use a 2.4 GHz band, which supports a maximum speed of 11 Mbps and 54 Mbps respectively.

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Wi-Fi-FiWirelessFidelity, similar to Bluetooth, is a short-distance wireless technology used in offices and homes. This technology uses a 2-4 GHz band, which is currently not licensed as a wireless band. Currently, two standards are available: IEEE802.11a and IEEE802.11b. This technology has its own advantages, so it is favored by manufacturers.

WI-FI is a non-profit organization held by a few American information companies with strong interest leverage and pointer. They have developed their own WIFI standards.
WEP, WPA

Wi-Fiwireless fidelity wireless fidelity) is essentially a commercial certification. Products with Wi-Fi Certification comply with IEEE 802.11b wireless network specifications, it is currently the most widely used WLAN standard and uses a 2.4 GHz band. The IEEE 802.11b wireless network specification is a variant of the IEEE 802.11 Network specification. The maximum bandwidth is 11 Mbps. when the signal is weak or there is interference, the bandwidth can be adjusted to 5.5 Mbps, 2 Mbps, and 1 Mbps. The bandwidth is automatically adjusted to effectively ensure the stability and reliability of the network.

Wi-Fi ID

Since the implementation of IEEE 802.11b, wireless networks have made great strides. Therefore, there have been more and more products based on this technology, and it is necessary to solve the compatibility problem between products of various manufacturers. Because IEEE is not responsible for testing the compatibility of IEEE 802.11b wireless products, this work is undertaken by a self-developed non-profit organization, the Wi-Fi Alliance. This alliance includes the most important wireless LAN equipment manufacturers, such as Intel and Broadcom, and well-known Chinese vendors such as ASUS and BenQ. All products that pass the Wi-Fi Alliance compatibility test are allowed to be marked with "Wi-Fi CERTIFIED. Therefore, when purchasing IEEE 802.11b wireless products, we 'd better choose products with Wi-Fi tags to ensure compatibility between products.

Wi-FiWirelessFidelity, wireless compatibility certification) is officially named "IEEE802.11b". Like Bluetooth, it is also a short-distance wireless technology used in the office and home. Although this technology is worse than Bluetooth in terms of data security, it is superior in terms of radio wave coverage. Wi-Fi coverage can reach around 300 feet or about 90 meters. Needless to say, the Office can also be used in a small building.
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Wi-Fi is a standard for WLAN. Maximum WLAN antenna) Up to 5 KM ...... It's not comparable to WIFI ......
Note! IEEE 8021B and 8021B are two different standards !!! The IEEE802.11a standard is a follow-up standard of IEEE802.11b. Its original design is to replace the 802.11b standard. However, the GHz band does not require a license. This band belongs to specialized frequencies such as industry, education, and medical care, it is public and requires a license to work in the 5.15-8.825GHz band.