19-07-2012, 10:09 AM
BLUETOOTH TECHNOLOGY
The Technology (updated).ppt (Size: 812.5 KB / Downloads: 29)
Example
Modern office
Pc
Keyboard / mouse
PDA
Printer
Headset
Others – Digi cam, mp3 player
Evolution of data transfer
Cables
Cds/floppy/pen drive
Need for Wireless
Infrared
Bluetooth
Wifi
Bluetooth: A History
Started by Ericsson mobile communications in 1994
Name comes from the 10th century Danish King Herald Bluetooth (A.D 940–985)
Logo
A Scandinavian firm originally designed the logo at the time the SIG was formally introduced to the public
The logo unites the Runic alphabetic characters "H", which looks similar to an asterisk, and a "B", which are the initials for Herald Bluetooth
SIG & Technology over the years
SIG
In September1998, five companies Ericsson, Nokia, IBM, Toshiba and Intel formed a Special Interest Group (SIG).
The main tasks for the Bluetooth SIG.
Bluetooth Technology Over the Years
Bluetooth was officially introduced in 1998
The first Bluetooth core specification version 1.1 was introduced in 1998
In 2003 Bluetooth core specification version 1.2 was adopted by the Bluetooth SIG
In 2004,Bluetooth version 2.0 + EDR(Enhanced data rate) was introduced
In 2009,Bluetooth SIG adopted core specification version 3.0
Product Association
Phone : Music, data.
Laptop : Transfer data ,connect to various gadgets.
Printer : Wireless print data, photos.
Camera : Send images to printer, mobile, pc.
Product Association (Cont’d)
TV : Unique slide show.
Headset : Keep your hands free.
Photo Viewer : Without memory cards.
Gaming : Wireless controllers.
Bluetooth: Advantages
Bluetooth Devices are Wireless
Bluetooth Technology is Inexpensive
Multiple Product Association.
Low Energy Consumption
Bluetooth is Automatic.
Bluetooth: Disadvantages
One device at a Time
Low Data Transfer Rate
Security Threats
Bluejacking
Bluesnarfing
Bluebugging
Protocol
Detecting the presence of other devices
Establishing communications guidelines between two devices (AKA: Handshaking)
Determining the various connection characteristics
How to format a message
How to start and end a message
What to do with corrupted or incorrectly formatted messages
How to recognize unexpected connection loss, and what to do next
Ending the connection or “conversation”
Bluetooth: How does it work?
Frequency – 2.4Ghz
Standard protocol
PAN / Piconet – Master & Slave
Profile
Hopping - AFH
Comparison with Other Technologies
Wi-Fi
A Wi-Fi enabled device can connect to the Internet when within range of a wireless network connected to the Internet
Bluetooth technology costs a third of Wi-Fi to implement
Bluetooth technology uses a fifth of the power of Wi-Fi
Under Wi-Fi, different certified versions have varying data transfer rates and work under different frequencies
Comparison with Other Technologies (Cont’d)
InfraRed (IrDA)
IrDA is used to provide wireless connectivity for devices that would normally use cables to connect
Point-to-point, narrow angle (30° cone), ad-hoc data transmission standard designed to operate over a distance of 0 to 1 meter and at speeds of 9600 bps to 16 Mbps
Not able to penetrate solid objects and has limited data exchange applications compared to Bluetooth
IrDA is mainly used in payment systems, in remote control scenarios or when synchronizing two PDAs with each other
Bluetooth: The Future
It meets a basic need of connectivity in close proximity hence high demand expected to grow
Since the formation of the original group, more than 1800 manufacturers worldwide have joined the initiative worldwide
Adoption of smart phones and handheld devices, Bluetooth will have tremendous effects on everyday life
Combining with other technologies e.g. 4G and 5G