Information AboutWwan |
| CATEGORIES ABOUT WIRELESS WIDE AREA NETWORK | |
| wireless networking | |
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DESCRIPTION A WWAN differs from a WLAN (e.g. wireless LAN ) because it uses Cellular Network technologies such as WIMAX , UMTS , GPRS , CDMA2000 , GSM , CDPD , Mobitex , HSDPA or 3G to transfer data. It can use also LMDS and Wi-Fi to connect to the Internet . These cellular technologies are offered regionally, nationwide, or even globally and are provided by a wireless service provider for a monthly usage fee. Various computers now have integrated WWAN capabilities (Such as HSDPA in Centrino ). This means that the system has a cellular radio ( GSM / CDMA ) built in, which allows the user to send and receive data. There are two basic means that a mobile network may use to transfer data:
Since radio communications systems do not provide a physically secure connection path, WWANs typically incorporate sophisticated encryption and authentication methods to make them more secure. Examples of providers for WWAN include: Sprint, Verizon, or AT&T. SEE ALSO
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