- 1. BLUETOOTH TECHNOLOGY Sanjay Lamba M.Sc. Tech. Mathematics
Central University of Rajasthan Presented By :-
2. Contents
- Bluetooth vs Other Wireless Technologies
- Advantages of Bluetooth Technology
- Disadvantages of Bluetooth Technology
3. Introduction 4. Introduction
- Bluetoothis a short-range and low power wireless technology
originally developed for exchanging data over short distances from
fixed and mobile devices, creating personal area networks
(PANs).
- Short-range radio frequency technology that operates at 2.4 GHz
on an unlicensed Industrial Scientific Medical (ISM) band.
- Effective range of Bluetooth devices is 10 meters.
- It was originally conceived as a wireless alternative to data
cables.
5. Value proposition of Bluetooth Cable replacement Ad hoc
networking Data access point Internet access Cordless headset Cell
phone mouse 6. History
- The word "Bluetooth" is taken from the 10th century Danish
KingHarald Bluetooth , he had been influential in uniting
Scandinavian tribes into a single kingdom.
- Bluetooth was named so because
- 1) Bluetooth technology was developed in Scandinavia.
- 2) Bluetooth technology is able to unite differing industries
such as the cell phone, computing, and automotive markets.
7. Technology Review 8. Technology Review
- Bluetooth uses a radio technology calledfrequency-hopping
spread spectrum.
- Supports data rate of1 Mb/s (originally).
- The Bluetooth specifications are developed and licensed by the
Bluetooth Special Interest Group (SIG).
9. Classes Of Bluetooth
- Bluetooth devices are classified according to
- three different power classes, as shown in the
10.
- Two or more Bluetooth units
- One device acts as a master and the devices connected
- 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
Piconets 11. Piconet formation Master Active Slave Parked Slave
Standby 12. Inter piconet communication Cell phone Cordless headset
Cordless headset Cell phone Master Active Slave Cordless headset
Cell phone mouse 13.
- 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.
Scatternets 14. Scatternetformation Master Active Slave Parked
Slave Standby 15. Bluetooth Protocols Application Framework and
Support Link Manager and L2CAP Radio & Baseband Host Controller
Interface RF Baseband Audio Link Manager L2CAP TCP/IP HID RFCOMM
Applications Data Control 16. Bluetooth Protocols
- Responsible for the modulation and demodulation of data into RF
signals.
- The radio layer describes the physical characteristics a
Bluetooth devices receiver-transmitter component must have.
- Responsible for channel coding and decoding.
- Digitizes the signals received by the radio for passing up the
stack.
- Formats the data it receives from the Link Controller (upper
protocol) for transmission over the channel.
- Responsible for establishing and maintaining the links between
Bluetooth units.
17. Bluetooth Protocols
- The Link Manager Protocol (LMP)
- Handles link setup, authentication, link configuration and
security procedures.
- Establishes all connections with the help of baseband
protocol.
- Host Controller Interface
- The Host Controller Interface (HCI) defines uniform methods for
accessing and controlling the lower layers of the protocol stack
(baseband and the link manager).
- Logical Link Control and Adaptation Protocol (L2CAP)
- Establishing connections across existing ACL( Asynchronous
Connection-oriented)links or requesting an ACL link if one does not
already exist.
- Allow many different applications to use a single ACL link
through multiplexing.
- Repackaging the data packets it receives from the higher layers
into the form expected by the lower layers.
18. Bluetooth Protocols
- Service Discovery Protocol
- Discovering services of other devices.
- Determining the characteristics of those services.
- Telephony Control Protocol Specification (TCS) defines
call
- Control signaling for establishing speech and data calls
between Bluetooth devices, providing them with telephony
services.
- Is a specification for Object data exchange over IR(InfraRed
links).
- Examples for using OBEX include exchanging business cards and
synchronizing calendar applications.
19. Bluetooth vs Other Wireless Technologies 20. Bluetooth vs
Other Wireless Technologies 21. The World According toBluetooth 22.
Different phases of Bluetooth Hands free kit connection Discovery
Pairing Detection of Profiles Connection Data Synchronisation
Hello, I am looking for bluetooth devices Hello, I am an available
Bluetooth device 23. Different phases of Bluetooth Hands free kit
connection 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 24.
Different phases of Bluetooth Hands free kit connection Discovery
Pairing Detection of Profiles Connection Data Synchronisation What
type of profile do you support ? I can doheadsetandhands-free .
What about you ? 25. Different phases of Bluetooth Hands free kit
connection Discovery Pairing Detection of Profiles Connection Data
Synchronisation Ok, we are now connected in Hands-free. I can do
hands-free. 26. Different phases of Bluetooth Hands free kit
connection 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. 27.
- The Hands Free synchronizes its phonebook with the contacts on
the
- The phonebook is vocally available at any time through
Voice
- Recognition, Text To Speech & Voice Tags.
- Synchronization is done only once (at first connection).
Phonebook synchronization Automatic Alessandro Del Piero
Gianluigi Buffon Fabio Cannavaro Fabio Grosso Tiago David Trezeguet
Alessandro Del Piero Gianluigi Buffon Fabio Cannavaro Fabio Grosso
Tiago David Trezeguet 28. Bluetooth Technology
- Advantages and Disadvantages
29. Advantages
- Facilitates Data and Voice Communication
- Offers formation of Ad hoc networks
- Low power consumes battery less
- Stationary and mobile environments
30. Disadvantages
- Interference with other devices
- Bluetooth internet connection gets slow sometimes
31. Future Of Bluetooth 32. Future Of Bluetooth
- Bluetooth has a good future ahead because it meets a basic need
of connectivity.
- Currently a protocol is being researched that would support
large ad hoc networks.
- Latest version of Bluetooth are improving both its security and
capabilities.
- Ultra wide band has been chosen by the Bluetooth Special
Interest Group as the future of Bluetooth Technology.
- New versions of Bluetooth technology will meet the
high-speedand large range.
- Many companies are designing impressive bluetooth applications
in demand.
33. Conclusion
- A new global standard for data and voice
- Low Power, Low range, Low Cost network devices.
- Bluetooth seems to have a bright future after reviewing its
benefits and wide use.
- Further improvements are planned to be made in
34. References
- [1]Future Of Bluetooth Technology
- by Justin Blasdin, Kian Pokorny
- [2]Security Comparison: BluetoothTM Communications vs.
802.11
- Thomas G. Xydis Ph.D, Simon Blake-Wilson
- [3] Bluetooth dot dot attacks
- By John F.David, Michael Barclay
- [4] Bluetooth : A Technology in Demand
- By Aniston Roger, Siamonds Lee
- http://en.wikipedia.org/wiki/Bluetooth
-
http://www.wirelessdevnet.com/channels/bluetooth/features/bluetooth.html
- [7] Introduction To Bluetooth
-
http://www.gsmfavorites.com/documents/bluetooth/introduction/
- [8] Advantages Of Bluetooth
-
http://ezinearticles.com/?What-Are-The-Advantages-Of-Bluetooth-Technology?&id=562666
- [9]Bluetooth vs. Wi-Fi Technology
-
http://www.smallbusinesscomputing.com/webmaster/article.php/3331421
- [10]Hack Device via Bluetooth without owners permission
-
http://www.wonderhowto.com/how-to/video/how-to-hack-a-cell-phone-to-make-free-
phone-calls-218649/
35. 36.
- Thank you for your presence