The difference between wlan and wifi

The difference between wlan and wifi

1. The relationship between wireless LAN and wifi

Tech & Gear WiFi can support two Internet standards, WiFi and WAPI, while WiFi can only support WiFi. in short, WiFi is a wireless network technology developed based on WLAN, a huge network system, and they belong to a subset of the relationship.

2. The difference between wlan and wifi

Difference 1: Different frequency bands

Culture The current WLAN common standard IEEE is a series of 802.11 standard, using 5GHz frequency band and 2.4GHz, when using IEEE 802.11a, the maximum speed supported by 5GHz is 54Mbps, when using IEEE 802.11b and IEEE 802.11g, the maximum speed supported by 2.4 GHz is 11Mbps and 54Mbps respectively. Similar to Bluetooth, WiFi is a short-range wireless technology in the 2.4GHz band. When the signal is weak, the bandwidth will automatically adjust from 72Mbps to 5.5Mbps, 2Mbps and 1Mbps according to the current signal condition to ensure the stability and reliability of the network.

Difference 2: Different signal coverage

Tech & Gear The coverage range of wireless LAN is larger than wifi, it uses antenna technology, the coverage range can reach 5 km, even in a large area of wireless LAN connection will not see any significant network speed changes, more suitable for schools, airports, shopping centers, train stations, cinemas and other large venues to ensure good network conditions, there are a large number of users, while wi fi coverage range is relatively small, a large area of the signal will be weakened, so more suitable for home and office use.

Difference 3: Different cell phone versions show different

As mentioned above, WLAN can support both wi fi and wapi standards, both of which can be used on cell phones developed in China, but foreign and some versions of cell phones only support wi fi, so some cell phones only connect to wi fi, which is one of the differences between wi fi and WLAN. We can also distinguish between phone versions by the connection shown on the network.

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