Bluetooth is a wireless technology standard used to connect electronic devices like computers, phones, and headphones. It uses short-range radio transmissions to form piconets between paired devices and scatternets linking multiple piconets. Bluetooth devices operate in classes based on their transmission range from 1 to 100 meters. Common uses of Bluetooth include wireless keyboards, headphones, and transferring contacts between phones.

1. by
SRINIVASAN.K
Bluetooth

2. • Bluetooth is a wireless technology that is mainly used
for transfer data between different electronic devices
for ad-hoc wireless communication of voice and data
anywhere in the world.”
• a standard for a small , cheap radio chip to be
plugged into computers, printers, mobile phones, etc

3.  Harald Bluetooth : 10th century Danish King, managed
to unite Denmark and Norway
 He was also successful in converting all the Danes to
Christianity.
 Bluetooth SIG (Special Interest Group) :
Founded in 1998 by : Ericsson, Intel, IBM, Toshiba and Nokia
Currently more than 2500 adopter companies
Created in order to promote, shape an define the specification
and position Bluetooth in the market place Current specification :
Bluetooth 2.1

4.  Piconets
 Scatternets

5. Definition
“Two or more Bluetooth units sharing the same channel”
One device acts as a master and the devices connected
to it act as slaves.
Slaves can not directly send data to each other.
In effect, the master acts as a switch for the piconet
and all traffic must pass through the master.
There can be up to 7 active slaves in a piconet but only
one master.

6. Master
Active Slave
Parked Slave
Standby

8. Definition
“A set of two or more interconnected piconets form scatternets.”
A Bluetooth unit can be a slave in two or more piconets, but it can be
a master in only one.
Devices that participate in two or more piconets may act as
“gateways.”
Bluetooth units can only transmit and receive data in one piconet at a
time.
Piconets may be identified by the master's identity and clock.
Devices give notification of inactivation to master before becoming
inactive in its piconet for a finite length of time.

9. Master
Active Slave
Parked Slave
Standby

11. 14.11
Bluetooth layers

12. 12
RF
Baseband
Link Manager
L2CAP
RFCOMM/SDP
Applications
Link Controller
Host Controller Interface
PHY
Data Link Layer
Network Layer
Transport Layer
Session Layer
Presentation Layer
Application
OSI/ISO

13. 13
 Radio: physically transmits/receives data.
 Baseband/Link Controller: controls PHY.
 Link Manager: controls links to other devices.
 Host Controller:e2e communication.
 Logical Link Control: multiplexes/demultiplexes data
from higher layers.
 RFCOMM: RS323-like serial interface.
 SDP: allows service discovery among Bluetooth
devices.

14. 8 16 Variable 16 8
Flags Address Data FCS Flags

15. 14.15
Frame format types

16.  FR define its own 4 bytes frame format
 The address area ( 2 bytes)
10 bits represents the actual circuit identifier
6 bits of fields related to congestion management
 Flags indicate the beginning and end of the frame
 Three primary components make up the frame relay
frame
The user –data portion
The frame check sequwnce(FCS)
The header and address area

17.  The following are the three basic security services specified
in the Bluetooth standard:
◦ Authentication
 verifying the identity of communicating devices. User
authentication is not provided natively by Bluetooth.
◦ Confidentiality
 preventing information compromise caused by
eavesdropping by ensuring that only authorized devices
can access and view data.
◦ Authorization
 allowing the control of resources by ensuring that a
device is authorized to use a service before permitting it
to do so.

18.  Laptops
 Cellular phones
 Personal digital assistants
 Headsets
 Cable less connections to Printers
 Bluetooth Mouses
 Bluetooth Keyboards
 GPS etc…

19.  There are three classes of Bluetooth devices.
Class 3 Radio: have range up to 1 meters or 3 feet.
Class 2 Radio: most commonly found in mobile
devices – have range of 10 metes or 30 feet.
Class 1 Radio: used primarily in Industrial use cases –
have range of 100 meters or 300 feet.

21. Eliminates wires
Facilitates Data and Voice Communication
Offers formation of Ad hoc networks
Standardized protocol
Free of charge
Easy to use
Low power and consumes less battery
Stationary and mobile environments

22. Relatively short range
Less secure
Interference with other devices
Mediocre Data rates
Bluetooth internet connection gets slow sometimes
More battery power when Bluetooth is enable on the
phone all day

23. How to use of bluetooth
Discovery
Pairing
Detection
of Profiles
Connection
Data
Synchronisation
Hello, I am
looking for
bluetooth
devices
Hello, I am
an available
Bluetooth
device

24. How to use of bluetooth
Discovery
Pairing
Detection
of Profiles
Connection
Data
Synchronisation
What is your
authentification
Code ?
1234…
This code has
to be typed
on your
keyboard
Ok !
Now we are
paired

25. How to use of bluetooth
Discovery
Pairing
Detection
of Profiles
Connection
Data
Synchronisation
What type of
profile do you
support ?
I can do headset
and hands-free.
What about you
?

26. How to use of bluetooth
Discovery
Pairing
Detection
of Profiles
Connection
Data
Synchronisation
Ok, we are
now
connected in
Hands-free.
I can do
hands-free.

27. How to use of bluetooth
Discovery
Pairing
Detection
of Profiles
Connection
Data
Synchronization
To complete
my
phonebook, I
have to
synchronise
with your
contacts
Ok, I transfer
my 163
contacts.

28.  Bluetooth is a short range radio link wireless
technology used to connect various device by a
invisible link getting rid of wires.
 Bluetooth seems to have a bright future after
reviewing its benefits and wide use.

29. Last but not the least,
WHENEVER THINK OF
WIRELESS,
”THINK BLUETOOTH”,
this is the best way of
communication.

30. Thank you for
Your
presence