Download - Bluetooth Technologies 2
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BLUETOOTH TECHNOLOGY
Presented by,
Ashwini vilas mayekar
Roll no. 3015
T.Y.EX
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CONTENTWhat is Bluetooth ?
Overview of Bluetooth History.
Goal & vision.
Middleware protocol group.
Headset profile.Bluetooth vs. IrDA.
Future of Bluetooth
Advantages.
Dis-Advantages.
Applications.
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What is Bluetooth? Bluetooth wireless technology is an
open specification for a low-cost, low-
power, short-range radio technology forad-hoc wireless communication of voiceand data anywhere in the world.
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Overview of Bluetooth History What is Bluetooth?
Bluetooth is a short-range wireless communicationstechnology.
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 link mobilephones & accessories.
5 companies joined to form the Bluetooth Special InterestGroup (SIG) in 1998.
First specification released in July 1999.
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Bluetooth Goals & Vision
Originally conceived as a cablereplacement technology.
Short-Range Wireless Solution.
Voice and Data Capability.
Worldwide Usability.
Other usage models began to develop: Personal Area Network (PAN).
Wireless telematics.
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Middleware Protocol Group
(contd.)
Service Discovery Protocol (SDP)
Means for applications to discover
device info, services and its
characteristics.
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Headset Profile
Profile provides:
Both devices must provide capability to initiate connection &
accept/terminate calls.
Volume can be controlled from either device.
Audio gateway can notify headset of an incoming call.
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Bluetooth vs. IrD
Bluetooth
Point to Multipoint
Data & Voice
Easier Synchronization
due to omni-directional
and no LOS
requirement
Devices can be mobile
Range 10 m
IrDPoint to point
Intended for Data
Communication
Infrared, LOS communication
Can not penetrate solid objects
Both devices must be stationary,
for synchronization
Range 1 m
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Future of Bluetooth Broadcast channel.
Topology management.
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Advantages of Bluetooth.
Relatively inexpensive transceivers.
Relatively low power required totransmit data.
Short range.
End-to-end encryption (128-bit).
Does not have the line of sight
problems associated with thecompeting infrared (IR) wireless datatransferring protocols.
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Disadvantages of Bluetooth.
The range is limited compared to WI-FI.
Bluetooth networks generally lackscalability.
Bluetooth has limited bandwidth.
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Application
Mobile phone and handset free head set.
Mouse ,keyboard & printer.
OBEX.
Infrared.
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Thank You