Relay Reduction and Disjoint Routes Construction for Scatternet Over Bluetooth Radio Systems

Abstract

The advances of computer technology and the population of wireless equipment have promoted the quality of our daily life. The trend of recent communication technology is how to make good use of wireless equipments for constructing an ubiquitous communication environment. Bluetooth is a low cost, low power, and short range communication technology that operates at 2.4GHz ISM bands. Two types of links, ACL and SCO links, are respectively used for transmitting data and voice over Bluetooth radio systems. To avoid the effect of co-channel interference, the radio frequency (RF) module hops over 79 channels in a speed of 1600 times per second. The short packet and the fast hopping increase the communication reliability of two Bluetooth devices. A piconet consists of at most eight Active Bluetooth devices which includes one master and multiple active slaves. The master in a piconet is responsible to manage at most seven active slaves and hundreds parked slaves[5][6].