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Wi-Fi Wireless Fi-delity
Wi-Fi wireless high-fidelity was originally the acronym is now considered a synonym for 802.11 wireless local area network. Wi-Fi technical specifications for the IEEE proposed by the Wi-Fi Alliance certification, ensuring interoperability of different wireless products.
In 1996, the U.S. networking equipment maker Lucent Technologies (Lucent) take the lead in initiating the formation of Wireless Ethernet Compatibility Alliance (Wireless Ethernet Compatibility Alliance, WECA), proceed with the creation of wireless network protocols (WLAN), the development of initial development to flow, and momentum is far off Bluetooth (Blue-tooth) after. In 1999, WECA renamed as Wi-Fi Alliance, the re-structure of a set of certification standards, proposed by the industry's wireless network access technologies - 802.11 a series of specifications, including 802.11.b, 802.11.a, 802.11. And so on.
Wi-Fi as a nickname for 802.11b, and IEEE 802.3 Ethernet as a nickname for the same reason. This stage, through the Wi-Fi Alliance testing compatibility of wireless networking products, even if different manufacturers, but also interoperability and compatibility, such as the PCMCIA wireless network card, USB wireless modules. According to Wi-Fi Alliance Data shows that since the League started in 2000 has been certified, there are approximately 680 products have been Wi-Fi certification, certified products expected by the end of 2003 will exceed 1000.
At present, Wi-Fi Alliance is making great efforts to promote Wi-Fi Zone program, ready to Wi-Fi certification mark to extend the provision of public wireless internet service hotspots (Hpt Spot) applications. The alliance also announced the future of the standard certification process, such as the wireless security for WPA (Wi-Fi Protected Access) V2, that is, 802.11i will be the first three quarters of 2004 through the certification; and to provide VoIP and enhanced multimedia support The 802.11e, also plans to 3rd quarter of 2004 through the Wi-Fi certified.

WIM Wireless instant messaging
Similar by AOL, MSN, or Yahoo! Provide online instant messaging service, which provides a "presence" management functions, and instant wireless text messaging. If you put aside, "presence" management did not mention, WIM also provides real-time text messages, but with the SMS message storage and transmission among the different functions.
Service through the WIM, users can specify a different user groups, and that group members will continue to note, another member of the "accessibility." Individuals can also specify a specific time in the "accessibility", and their preferred mode of communication, such as such as SMS, e-mail, or voice calls.
WIM For businesses, presents several advantages, including through the WIM "presence" function to enhance the effectiveness of productivity and work together (for example, whiteboard functionality for remote meetings), the immediate nature of the consultancy work, as well as file sharing other possible applications.

WiMAX (Worldwide Interoperability for Microwave Access)
WiMAX initially will be called wireless "hot spots" (hot-spot) to jointly support 802.16a technology industry. These companies include Cometa Networks, T-Mobile and Wayport account. "Hot spots" to provide wireless Internet connections, using the technology is Wi-Fi, also known as 802.11a/802.11b, under another set of standards. LaBrecque said that these hot spots can use 802.16a equipment companies, their effective range of up to 30 miles, data transfer rate of up to 70MBps, can substitute for the provision of this Wi-Fi connection used for expensive wired network.
WiMAX members include Airspan Networks, Aperto Networks, Ensemble Communications, Fujitsu Microelectronics America, Intel, Nokia, OFDM Forum, Proxim and Wi-LAN. Component manufacturers also joined the WiMAX, make this organization function similar to the Wi-Fi Alliance in the wireless networking market to play.