The hottest technology in personal computing is wireless networking , which allows users to share a high -speed Internet connection among multiple computers without being tethered to wires or wall jacks .Known as Wi-Fi ,this wireless system is commonly used to connect computers in various rooms of a home, but it is also popping up in public places like airports , hotel lobbies and coffee shops.
The following points are broadly discussed in the paper::
1.Wi-Fi networks use radio technologies called IEEE 802.11b or 802.11a to provide secure ,reliable ,fast wireless connectivity.
2.The emergence of Short Service Message (SMS) capability combined with the advent of location technology and browser enabled mobile services offer prospects for accelerated growth with in the mainstream consumer market.
3.Wireless application protocol(WAP) provides a set of data protocols that are simultaneously optimized for the restrictive wireless network environment and independent of the underlying type of wireless network.
4.First generation cellular networks used analog radio technologies.
5.Second generation networks use digital technologies and can support both voice and data calls.
6.Third generation networks are packet – based networks that support simultaneous voice and data traffic, including multimedia.
7.So called 2.5G (2 ½ generation) represent an intermediate step, adding higher capacity to existing 2G (second generation) networks.
8. For the security of wireless networks Wired Equivalent privacy (WEP), a basic encryption technology is provided.
9.Bluetooth technology and Wi-Fi technology have been compared.
10.The use of wireless connectivity in deeply embedded systems has been discussed.
11.In the last section applications of wireless communication are described broadly.
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