I. Introduction
Bluetooth [1] is a low-power, low-cost, short-range technology that was developed to replace cables between electronic devices. Bluetooth devices can form small networks called “piconets” in which one node is a “master” and upto seven others are “slaves”. A piconet can be used to connect electronic devices such as mobile phones, PDAs, headsets; such a network is referred to as a PAN (Personal Area Network) [2].