Mobile computing over the Internet

There has been a trend to support "computing on move" or mobile computing, where a user is free to roam and he or she still expects an interrupted access to the Internet. To support mobile computing over the Internet, two possible approaches can be considered. One is to use mobile version of IP (Internet Protocol), which could support typical Internet applications. The second approach is to use Wireless ATM (Asynchronous Transfer Mode), an emerging technology where ATM cells are transmitted over wireless links and part of the ATM connection lies in the wireless network. Wireless ATM has received attention due to the need to support mobile multimedia services and also because of an increasing deployment of ATM technology in the Internet and other networks. The paper discusses the challenges and issues that, must be considered before Wireless ATM can be widely deployed in the Internet environment.