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The History of Wi-Fi
from:Wi-Fi is a relatively new type of technology that is just starting to attract a wide following worldwide. Some consider it to be one of the most significant innovations in technology since the internet came to the mainstream. Because of it, computers are now able to connect to the internet and to other computers wirelessly.
The precursor of today’s Wi-Fi was developed sometime in the early 1990s by the Netherlands-based company NCR Corporation/AT&T (which later became known as Lucent & Agere Systems). Called WaveLAN, it was originally intended to be used in cash registers.
Several competing standards prevented the immediate success of having wireless networks. However, with the development of the IEEE 802.11 standard and the release of its first protocol in 1997, this technology slowly but surely came into the mainstream. Since then, several protocols were released and several more will be released to address issues such as range and speed.
The first protocol released in 1997, now known as the Legacy mode, operated in the 2.4 GHz frequency. The throughput and data rate are slow by today’s standards, with only 0.9 and 2 Mbit/s, respectively. 802.11 a and b came two years later in 1999 with the a protocol offering faster speeds while the b provided a wider range. The elements of the two were later merged in 2003 when the 802.11g protocol was released. The new protocol offered the speed of the a and the range of the b.
Newer protocols are currently under development. The n, set to be released mid-2009 provides greater speeds and almost double the range of the a/b/g protocols. Another one, the 802.11y, is set to be released in mid-2008 has the same speed as the g protocol although the y has an outdoor range of as much as 5 kilometers.
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