Bluetooth Technology : versions,working,architecture,scope,protocol stack,advantages and disadvantages.

1. BLUETOOTH
TECHNOLOGY

2. GROUP MEMBERS
Devika Sindwani
Parikshith Rai
Rishabh Upadhaye
Yash Parekh
Vinod Pradhan

3. WHAT IS BLUETOOTH?
 The development of the “short-link” radio technology, later named Bluetooth, was
initiated in 1989 by Dr. Nils Rydbeck, CTO at Ericsson Mobile and Dr. Johan Ullman
 A wireless technology standard for exchanging data over short distances from fixed and
mobile devices, and building personal area networks
 Invented by telecom vendor Ericsson in 1994
Maintained by Bluetooth Special Interest Group
( Ericsson, Intel, Nokia, Toshiba ,IBM )
Compatible hardware Mobile phones, personal
computers, gaming consoles
Physical range Typically less than 10 m, up to 100 m

4. VERSIONS

6. SCOPE
 Provide communication between peripheral devices
 Used by modern healthcare devices to send signals to monitors
 Rapid Data Transfer
 Used for Dial-Up networking
 Hands free voice communication
 Enables mobile computers to connect to fixed LAN

7. BLUETOOTH ARCHITECTURE
PICONET

8.  Piconet can have upto eight active nodes (1 master and 7 slaves) or stations
within the distance of 10 meters.
 Only one primary or master station in each piconet.
 Communication between the primary and the secondary can be one-to-one or
one-to-many
 All communication is between master and a slave. Salve-slave communication
is not possible
 Can have upto 255 parked nodes

9.  Formed by combining various piconets
 Slave in one piconet can act as a master or primary in other
piconet (Bridge Slave)
 A station cannot be a master in two piconets
Scatternet

10. BLUETOOTH PROTOCOL STACK

11. Radio Frequency : Defines Air Interface,Frequency Bands,Frequency
Hopping,Modulation Technique and transmit Power Classes
Baseband : Addressing Scheme,Packet Frame Format,Timing and
Power Control Algorithms for establishing connection between bluetooth
devices
Link Manager Protocol : Establish link and maintain it.Also responsible
for authentication and Encryption and packet size negotiation
L2CAP ( Logical Link Control and Adaptation Protocol) : Adapts
upper layer frame to Base band layer frame format and vice versa
Service Discovery Protocol : Service related queries including device
information

13. ADVANTAGES
 Makes Connectivity Convenient
 Wireless
 Free to Use
DISADVANTAGES
 Can be Hacked
 Short Range Communication
 Low File Sharing Speed
 Can only connect two devices at once