Hello, my locals
Today, #wifi andWlanWhat difference does it make。
Careful friends, i don't know what you've found, but the network that we're connected to on a national phone shows wireless local area networks or wlan, not what we usually call wifi。
What's the difference between wifi and wlan
Let's find out today
Different definitions
Wlan (wirels local area networks): fully known as wireless local area networks (wlans) is a means of using wireless communications technology (e. GWi-fiAnd bluetooth, etc.) network systems for wireless connectivity and data transmission of equipment within the lan. Wlan's coverage usually ranges from tens of metres to several kilometres, depending on the equipment and environment used。
Wi-fi (wirelseality): is a wlan standard and can be understood as a wireless networking technology. Wi-fi technology provides network connectivity between devices through wireless signals, allowing users to access the internet and share data without the use of cable. Wi-fi coverage is usually within a few dozen metres and is a short distance wireless communication technology。
So, as described above, wlan is a network system that uses radio-frequency technology for data transmission, and wi-fi is a technology in this network system, or one of the many ways in which wlan can be achieved。
Technical standardsZenium
Wlan:wlan includes a number of technical standards, such as the 802. 11 series of standards, which are constantly upgraded to provide higher data transmission rates and more functional features. For example, the latest 802. 11be (i. E. Wifi 7) standard supports multi-resource units (mru) and multi-link (multi-l)Technologies such as ink provide transmission rates up to 23050 mbit/s。
Wi-fi: wifi, as a wlan standard, is improving as technology develops. For example, from the original 802. 11b standard to the latest 802. 11be standard, the transmission rate and functional properties of wifi were significantly increased。
Security and authentication
Wlan: data security can be protected by various authentication methods (e. G. User password authentication, dynamic password authentication, etc.) and encryption techniques (e. G. Wpa, wpa2)。
Wi-fi: encryption techniques such as wpa, wpa2 are also used to protect data security and may be enhanced by filtering mac addresses. Both have similar safeguards in terms of safety。
Coverage and transmission rate coverage
Wlan: the coverage ranges from dozens of metres to a few kilometres and applies to large sites such as offices, schools, businesses, etc。
Wi-fi: the coverage is relatively narrow, usually within tens of metres, and suitable for short distance connections between small sites or equipment。
Transmission rate
Wlan: transmission rates typically range from tens of gigabytes per second to gigabytes per second, depending on the equipment and channel bandwidth used。
Wi-fi: the transmission rate is also high, usually between hundreds of megabits per second and gigabits per second, depending equally on the bandwidth of the equipment and the channel. It needs to be noted, however, that higher transmission rates are likely to be achieved within close range due to the low coverage of wi-fi。
Apply scene
Wlan: because of its wide reach, it is often used to construct largeWireless networkSuch as campus networks, enterprise networks, etc., to meet the demand for large quantities of equipment for simultaneous connectivity and data transmission。
Wi-fi: because of its high transmission rate and moderate coverage, it is often used to connect equipment requiring high-speed wireless communication, such as laptops, smartphones, printers, etc. Wi-fi provides easy wireless connection experience in homes, offices, public places, etc。
Summary
Wi-fi has its unique advantages and characteristics as a standard and technical means of realization for wlan, which is a broader concept covering all lan standards based on wireless communications technology。
Wi-fi and wlan have significant differences in definitions, technical standards, coverage, transmission rates, application scenarios and safety and authentication methods. In practical applications, the two are often used in tandem to meet wireless connectivity and data transmission needs in different scenarios。
