30 The Dimensioning of Non-Token-Bucket Parameters for Efficient and Reliable QoS Routing Decisions in Bluetooth Ad Hoc Network Halabi Hasbullah and Mahamod Ismail Universiti Teknologi PETRONAS, Universiti Kebangsaan Malaysia, Malaysia 1. Introduction 1.1 Bluetooth applications and its technical issues For specific applications, such as in Wireless Personal Area Network (WPAN), Bluetooth ad hoc network can be suitably deployed as a substitution for other technologies to provide the last meter connectivity solutions. In a WPAN, as specified in IEEE 802.15 Specification, nearby devices can be connected together for short-range communications to form a personal networking setup, for instance between a hand phone and an ear phone, an access point and a PDA, a GPS receiver and a navigator, etc. The other short-range technologies, such as Wireless Sensor Network (WSN), ZigBee, and Radio Frequency IDentification (RFID) may not be able to create such personal networking capability. Bluetooth communications technology was originally designed and intended to replace the cable connectivity between these nearby devices. Now, all the devices within the WPAN are neatly and seamlessly connected together without cable cumbersome, as well as providing mobility support to end users. To some extent, roaming facility is provided to allow a user to move around from one coverage area to another. This roaming service may be applicable in a museum or shopping mall where information about items or products is transmitted transparently to users’ or clients’ mobile devices, while they are on the move. In this way, the users would be more informative about the services and products offering around them. However, Bluetooth ad hoc network is constrained by limited resources due to its low- power and short-range communication capability, as described by (Haartsen, 1998). The smallest networking unit of Bluetooth, called piconet, can support up to 8 active mobile devices at a time. A greater number of mobile devices in vicinity can only be supported by creating multiple piconets, which now a scatternet that interconnects multiple piconets is developed. Additionally, its communications range can only cover to a maximum of 100 meters and beyond this range multi-hop communication using multiple relay devices is required. This is in contradiction to WLAN, WiFi and WiMAX setups, where hundreds of mobile devices are handled simultaneously and wider coverage area is obtained by using only a single cell. However, with no exception, Bluetooth ad hoc network is also carrying multimedia, interactive, and real-time data, and the demands for transporting these data www.intechopen.com