A technical ppt on Bluetooth communication Technology

1. Communication
By-
Ankita Saha
BSSE/UT/EC/14/013

2.  What is luetooth?

3. • Invented in 1994 by
Ericsson Mobile
Communications
• Bluetooth ‘SIG’ in1998

4. • Ad-hoc Network
A wireless ad-hoc
network is
decentralized type
of wireless network.
The network is ad-
hoc because it
doesn’t rely on a
pre-existing
infrastructure

5. 5
 BT States
Standby
Inquiry Page
Transmit Connected
Park Hold Sniff
Unconnected
Connecting
Active
Low power
. Initially, all nodes in
standby.
. Node (master) can begin
inquiry to find nearby
devices.
. Piconet is then formed.
. Devices join by paging.

6. Piconets
• Basic unit of Bluetooth
networking
• Master and one to seven
slave devices
• Master determines channel
and phase

7. Scatternets
• Interconnection of multiple piconets.

8. • Device discovery
• Listeners respond
with their address.
 Inquiry

9. 9
 Paging Master
Active Slave
Parked Slave
Standby
• Device enters paging to
invite others to join its
piconet.
• Establishes links with nodes
in proximity.
• Paging message unicast to
selected receiver.
• Receiver sends ACK.
• Sender becomes master,
receiver slave.

10.  Range and Data Rate
Bluetooth version Maximum speed Maximum range
3.0 25 Mbit/s 10 meters (33 ft)
4.0 25 Mbit/s 60 meters (200 ft)
5 50 Mbit/s 240 meters (800 ft)

11. Class
Max. permitted power Typ. range
(m)(mW) (dBm)
1 100 20 ~100
2 2.5 4 ~10
3 1 0 ~1
 Power Management

12.  Application of Bluetooth
• In Vending machine
• Email delivery to the PC
• The E-wallet
• The underground train
• Bluetooth headset

13.  Advantages of Bluetooth
• Minimal Hardware Dimensions
• Low price
• Low power consumption
• Easy to use
 Disadvantage of Bluetooth
• Data transfer between two devices is slow
compare to Wi-Fi direct
• Range of a BT is 15-30 ft (10mtrs)