Handover in bluetooth networks using signal parameters

Bluetooth is an established standard for low cost, low power, wireless personal area network. Currently Bluetooth does not support any handover protocol in which handoff occurs dynamically, when a Bluetooth device is moving out of the piconet. This paper presents Bluetooth handover concept in terms of measuring the signal parameters with respect to localization. These parameters are Received Signal Strength Indicator (RSSI), Link Quality (LQ), Transmitted Power Link (TPL) and Received Power (RX). According to the experimental analysis based on Bluetooth specifications, only Received Power RX is best suited for distance estimation and handover decision. Furthermore this paper discusses location estimation techniques, Bluetooth signal parameters for distance estimation and finally experimental analysis of signal parameters and their comparisons with distance is discussed. The main objective of this paper is to analyze the relation between Signal parameters and Handover. The parameter selected for distance based measurement can be used as threshold value for handover initiation. A l l the work is being done in BlueZ using Linux kernel 2.6.