bluetooth technology paper presentation

[seminar class]

PRESENTED BY:
Ashish Kumar Maurya

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BLUETOOTH TECHNOLOGY
Example : The Networked Home
Overview of Bluetooth History
What is Bluetooth?
Bluetooth is a short-range wireless communications technology.
Why this name?
It was taken from the 10th century Danish King Harald Blatand who unified Denmark and Norway.
When does it appear?
1994 – Ericsson study on a wireless technology to page link mobile phones & accessories.
5 companies joined to form the Bluetooth Special Interest Group (SIG) in 1998.
First specification released in July 1999.
BLUETOOTH-DONGLE
SOFTWARE FOR BLUETOOTH
What is Bluetooth?
“Bluetooth wireless technology is an open specification for a low-cost, low-power, short-range radio technology for wireless communication of voice and data anywhere in the world.”
Ultimate Headset
Cordless Computer
Timeline
1994 : Ericsson study complete
1995 : Engineering work begins
1997 : Intel agrees to collaborate
1998 : Ericsson, Intel, IBM, Nokia & Toshiba
1999 : Bluetooth Specification 1.0A
promoter group expanded: 3Com, Lucent, Microsoft & Motorola
2000 : Bluetooth Specification 1.0B, 2000+ adopters
2001 : First retail products released, Specification 1.1
2003 : Bluetooth Specification 1.2
2005 : Bluetooth Specification 2.0 (?)
Technical features
Bluetooth Frequency
Classification
Piconet Structure
Bluetooth Protocol Stack
L2CAP
Service provided to the higher layer:
L2CAP provides connection-oriented and connectionless data services to upper layer protocols
Protocol multiplexing and demultiplexing capabilities
Segmentation & reassembly of large packets
L2CAP permits higher level protocols and applications to transmit and receive L2CAP data packets up to 64 kilobytes in length.
File Transfer Profile
Headset Profile
Core Bluetooth Products
Notebook PCs & Desktop computers
Printers
PDAs
Other handheld devices
Cell phones
Wireless peripherals:
Headsets
Cameras
Security
Personal Identification Numbers (PIN) for device access.
Long encryption keys are used (128 bit keys).
These keys are not transmitted over wireless. Other parameters are transmitted over wireless which in combination with certain information known to the device, can generate the keys.
A Comparison
Bluetooth vs. IrD
Bluetooth
Point to Multipoint
Data & Voice
Devices can be mobile
Range 10 m