Abstract
Bluetooth, IEEE802.11, and GPRS wireless technologies have been widely used nowadays. Bluetooth is a wireless communication technology that provides low cost, low power consumption, and short-range radio network connections. IEEE802.11 supports a higher (54Mbps) transmission rate, and longer (300meters) transmission range compared to Bluetooth. IEEE802.11 consumes more energy than Bluetooth, which limits the use of mobile device, powered by battery. On the other hand, GPRS technology enables mobile device connecting to Internet anywhere provided the existence of base stations and supports high-speed mobility during communication. However, the user is charged in using GPRS due to the use of licensed bandwidth and provides relative low transmission rate compared with Bluetooth and 802.11. Integrating the Bluetooth, IEEE802.11, and GPRS systems that take advantages from all of them will enable the efficient use of radio resource which provide the communication with high bandwidth and low cost. This paper proposes a novel mechanism for resolving the seamless handoff problem between Bluetooth and IEEE 802.11, providing advantages of lower power consumption from Bluetooth and high transmission rate from 802.11. A seamless platform has been implemented that support full functions of Bluetooth HCI driver on Windows operating system. The supported Bluetooth HCI driver facilitates functions for seamless handoff control including link connection and disconnection, monitoring link quality, and switching between active and sleep modes.
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