Wireless LAN is expected to continue to be an important form of connection in many business areas. Market expected to grow as the benefits of wireless LANs in mind. Frost & Sullivan estimates the wireless LAN market will be 0.3 miiyar U.S. dollars in 1998 and 1.6 billion dollars in 2005. So far the wireless LAN has been installed in universities, airports, and other large public places. Decrease in the cost of wireless LAN equipment also brought into homes.
However, in Britain the cost is very high from the use of such connections in public so far is restricted to use in place of waiting for business class airport, etc.. Broad market future forecast to recover, corporate offices and central areas of major cities. City of New York has started a pilot program to cover the entire district of the city with wireless Internet. Original wireless LAN devices are very expensive which is only used for wired LAN alternative in places where cabling is difficult or impossible. As a place that has long protected or classroom, although the gap closed from 802.11b (typically 30 feet.) Limit than that used for small buildings. Wireless LAN components is fairly easy to use at home, with many in the set-up so that one PC (PC parents, for example) can be used to share internet connection with the entire family (at the same time remain in the access control PC parent ).
Early development included industry-specific solutions and proprietary protocols, but at the end the 1990s were replaced by standards, primarily the various versions of IEEE 802.11 (Wi-Fi) (see separate article) and HomeRF (2 Mbit / s, it is advisable for the home, antahberantahdi UK ). An alternative ATM-like 5 GHz standardized technology, HIPERLAN, has so far not succeeded in the market, and with the release of the faster 54 Mbit / s 802.11a (5 GHz) and 802.11g standard (2.4 GHz), is almost certainly impossible.
Source : http://id.wikipedia.org/wiki/LAN_nirkabel#Kekurangan