Wireless PC-Peripherals Communication via Blue Tooth (D0130 project)
Blue Tooth Technoloty
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Transcript of Blue Tooth Technoloty
Good morningWelcome
to the
seminar
Seminar on
Bluetooth
Bluetooth
Open wireless protocol
Uses short range radio technology
Simplifies data
synchronisat-ion
Bluetooth implementation
Uses frequency hopping spread spectrum
Uses Gaussian Frequency shift keying
Developed & licensed by SIG
Bluetooth specification protocol stack
Bluetooth radio Frequency bands
Transmitter characteristics
Receiver characteristics
Baseband
error correction
Hop selection
Bluetooth security
LMPUsed by link managers
Mainly made up
of PDU’s
HCIActs as a command
interface
Communicates the host
stack with the host
controller
L2CAPProvides connection oriented & connectionless
data services
Two link types
-SCO
-ACl
RFCOMMCreates a virtual serial data stream
Acts as a transport layer
Emulation of serial ports
SDPUses a request/response model
Discovers services provided by other Bluetooth devices
AVCTPAudio/visual control transport protocol
AVDTPAudio/visual data transport protocol
TCS-BINTelephony control protocol-binary
bit oriented protocol
ADOPTED PROTOCOLS
It includes-ppp
point-to-point protocol
Tcp/ip/udp
foundation protocol
Obex
object exchange protocol
wae
wireless application environment
Wap
wireless application protocol
Bluetooth profilesDescribes implementation of user
models
Defines parameter ranges of each
protocol
Decreases the risk of
interoperability problems
View of different sections of profiles
How Bluetooth works
Modes of
operationpiconet connection between 2 or more devices
each piconet is identified by a different FHS
follows a master slave mechanism
Scatternet
connection of different piconets
Different versions of
Bluetooth
•AFH, eSCO•High
transmission speed
•EDR•Low power
consumption
• Supports non-encrypted channels
•Required mandatory BD_ADDR
Bluetooth
1.0 & 1.0B
Bluetooth
1.1
Bluetooth
1.2
Bluetooth
2.0
•Extended inquiry response
•Secure simple pairing
Bluetooth
2.1
• AMP• High speed
transport
Bluetooth
3.0
Applications of
Bluetooth
A typical Bluetooth mobile
phone headsetA Bluetooth USB dongle
MOTOROLA –PORTABLE-
BLUETOOTH car-kit-T305 Features-
• Crisp & clear
• Smooth execution
• Fashionable & multi-
faceted
• Mini USB connector
for easy charging
• A Multi-function button
Advantages of
Bluetooth
Universally accepted
economical
Simplifies communication
while driving
Best alternative of data transfer
Instant PAN (personal area network)
Standard protocol
Bluetooth v/s Wi-Fi
-->uses wireless PAN
-->simplifies discovery & setup of Services -->uses wireless LAN
-->requires configuration to setup shared resources
Bluetooth
security
As it has many benefits, also
susceptibility to denial of service
attacks—
Bluejacking
Bluesnarfing
bluebugging
To protect data--Many software patches
available for older Bluetooth
phones
Turn to non-discoverable mode
when not in use
Never pair with unknown
devices or In public places
Disadvantages of Bluetooth
Battery mileage
Bluetooth internet
Thank you for your presence
By,J.Pranaya
Sujata Patnaik