نتایج جستجو برای: bluetooth

تعداد نتایج: 4559  

2004
Marc Haase Matthias Handy

Bluetooth enabled devices are potentially vulnerable against passive tracking attacks because of their unique and invariant device address. The contribution of this paper is the exploration of tracking vulnerability of Bluetooth devices. We implemented BlueTrack, a tracking system based on off-the-shelf components. We tested our system at two sites, at a university building with several lecture...

2003
Antti Kotanen Marko Hännikäinen Helena Leppäkoski Timo Hämäläinen

This paper presents a design and an implementation of the Bluetooth local positioning application. Positioning is based on received power levels, which are converted to distance estimates according to a simple propagation model. The extended Kalman filter computes 3D position estimate on the basis of distance estimates. With the used Bluetooth hardware, the mean absolute error of positioning wa...

2003
Martin Connolly Cormac J. Sreenan

The Bluetooth protocol is one of the better-known technologies in the field of pervasive computing and is now beginning to emerge in the consumer electronics marketplace in devices such as digital cameras, mobile phones and laptops. This paper examines the performance of the Bluetooth protocol using a simulator developed as part of the University of Berkeley’s Network Simulator (ns) [1]. In par...

2004
Jehn-Ruey Jiang Bing-Rong Lin Yu-Chee Tseng

The device discovery time of Bluetooth is prohibitively long. This may significantly impact many mobile applications. In this work, we start by analyzing the frequency-matching delay of Bluetooth for both versions V1.1 and V1.2. We then propose three schemes to speed up the device discovery procedure of Bluetooth. The result is a significant reduction of average frequency-matching time from 23....

2004
Jim Lansford Adrian Stephens

This article provides an introduction to issues of coexistence between Bluetooth and WiFiTM (IEEE 802.1 1 b), with particular attention toscenarios requiring simultaneousoperation, or Sim-OPTM, of both s stems in very close proximiiy. The article explains basic interference mechanisms an cy quantifies their impact through both actual measurements and simulation. W e have developed a detailed si...

2002
J. Dunlop N. Amanquah

With the emergence of many short range wireless connectivity solutions it is expected that a wide range of devices will become connected together to form a sea of networked devices. Such an environment has considerable potential for service provision and Bluetooth has been specifically designed for operation in such an environment. However networks of this type must be equipped with the means t...

2001

Agilent 2 Introduction Bluetooth TM wireless technology is an open specification for a wireless personal area network. It provides limited range RF connectivity for voice and data transmissions between information appliances. Bluetooth wireless technology eliminates the need for interconnecting cables and enables ad hoc networking among devices. Named after a tenth-century Danish King, Bluetoot...

Journal: :IEEE Transactions on Intelligent Transportation Systems 2015

2010
Shrirang Mare David Kotz

Many people believe mobile healthcare (mHealth) would help alleviate the rising cost of healthcare and improve the quality of service. Bluetooth, which is the most popular wireless technology for personal medical devices, is used for most of the mHealth sensing applications. In this paper we raise the question – Is Bluetooth the right technology for mHealth? To instigate the discussion we discu...

2013
Martin Herrmann Stephan Günther

KURZFASSUNG Es gibt nur wenige Geräte, die Bluetooth Monitoring oder Injection ermöglichen, da sich dies auf Grund spezieller Eigenschaften des Bluetoothprotokolls als schwierig erweist. Kommerzielle Hardware, welche hierzu in der Lage ist, ist oftmals zu teuer für die Allgemeinheit, weshalb Alternativen wie das Ubertooth Project entwickelt werden. Hierdurch wird es möglich, Angriffe auf Blueto...

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