Good morning
Welcome
to the
seminar

Seminar on
Bluetooth

Bluetooth
Simplifies
Open Uses short
data
wireless range radio
synchronisat
protocol technology
-ion

Bluetooth implementation
Developed
& licensed
Uses by SIG
Gaussian
Frequency
Uses shift keying
frequency
hopping
spread
spectrum

Bluetooth specification protocol stack

Bluetooth radio
 Frequency bands
Transmitter characteristics
Receiver characteristics
Baseband
 error correction
Hop selection
Bluetooth security

LMP
Used by link managers
Mainly made up
of PDU’s
HCI
Acts as a command
interface
Communicates the host
stack with the host
controller

L2CAP
Provides connection oriented
& connectionless
data services
Two link types
-SCO
-ACl
RFCOMM
Creates a virtual serial data
stream
Acts as a transport layer
Emulation of serial ports

SDP
Uses a request/response
model
Discovers services provided
by other Bluetooth devices
AVCTP
Audio/visual control
transport protocol
AVDTP
Audio/visual data transport
protocol

TCS-BIN
Telephony 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 profiles
Describes 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
operation
piconet
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
• Supports non-
• Required encrypted
mandatory channels
BD_ADDR
Bluetooth Bluetooth
1.0 & 1.0B 1.1
Bluetooth Bluetooth
2.0 1.2
• EDR • AFH, eSCO
• Low power • High
consumption transmission
speed

•Extended inquiry
Bluetooth response
•Secure simple pairing
2.1
Bluetooth • AMP
• High speed
3.0 transport

Applications of
Bluetooth
A typical Bluetooth mobile A Bluetooth USB dongle
phone headset

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