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Terminology
Wi-Fi Alliance (Formerly Name: WECA (Wireless Ethernet Compatibility Alliance))
It is an organization that aims to promote the spread of Wireless LAN, and it guarantees the
interoperability of products that meet the Wireless LAN standard.
IEEE802.11b
It is one of the wireless LAN standards set by 802 committee that formulates a standard of the LAN
technology in IEEE (the Institute of Electrical and Electronics Engineers). By using the 2.4GHz license-
free frequency band, you can perform communication at a speed of 11Mbps at the maximum.
IEEE802.11g
By using the 2.4GHz license-free frequency band as well as IEEE802.11b, you can perform
communication at a speed of 54Mbps at the maximum, which is about 5 times the speed of
IEEE802.11g. Moreover, there is an upward compatibility with IEEE802.11b.
IEEE802.11n
It is a next-generation Wireless LAN standard that is being developed with the aim of producing the
maximum transmission speed of 600Mbps by using the technology called MIMO, combines multiple
channels and performs transmission. It is being designed to have a compatibility with IEEE802.11b
and IEEE802.11g.