28-04-2011, 09:47 AM
Presented by:
Kinnari Shah
[attachment=12969]
Origin
Bluetooth is a computing and telecommunications industry specification that describes how various communication devices like mobile phones, computers, and personal digital assistants can easily interconnect with each other using a short-range wireless connection.
Universal radio interface in the 2.4 GHz (ISM Band) frequency gives 10 to 100 meter range.
ISM stands for Industrial, Scientific and Medical Band which is license free in nearly all countries.
Eliminates cables
Inexpensive
Easy to set up and use
Readily available
Device compatibility
1 Mbps for Version 1.2
Up to 3 Mbps supported for Version 2.0
It is designed to have very low power consumption.
It uses Frequency Hopping to provide a robust and high B/W communication.
Named from Danish King Harald Bluetooth king of Denmark and Norway.
The logo was designed by a Scandinavian firm in which the characters H & B were used.
Invented in 1994 by L. M. Ericsson, Sweden
Bluetooth SIG (Special Interest Group) was founded by Ericsson, IBM, Intel, Nokia and Toshiba in Feb 1998.
More than 2500 members today.
Bluetooth version 1.0 , 1.1 , 2.0 ,3.0 and 4.0 have been released.
BLUETOOTH RADIO is a transceiver which transmits and receives modulated electrical signals from peer Bluetooth devices.
BASEBAND is the physical layer of the Bluetooth which manages physical channels and links along with services like error correction, data whitening, hop selection.
ACL is Asynchronous Connection-Less physical page link for transmitting data over the physical channels. ACL page link provides a packet switched connection between the master and all the active slaves.
SCO is Synchronous Connection-Oriented physical page link for voice-like information. It is a symmetric, point-to-point page link between the master and a specific slave. It behaves like a circuit-switched connection.
Link Manager essentially handles page link set-up, security and control. It provides services like authentication, encryption control, power control
L2CAP is the Logical Link Control and Adaptation Layer protocol. It provides connection-less and connection-oriented data services to upper layer protocols.It is also used for Multiplexing , Segmentation and Reassembling of packets.
SDP is Service Discovery Protocol for applications to discover which services are available and characteristics of the services that are available.
RFCOMM is a simple transport protocol, It supports up to 60 simultaneous connections between two Bluetooth devices.
Other Protocols-TCP (Transmission Control Protocol) , Jini technology, WAP Wireless Access Protocol.
Piconet
A Piconet is a collection of up to 8 devices one of which is a master.
These devices frequency hop together.
They use the master’s clock for synchronization.
Slaves can be in any of the following modes:
Park, Hold, Sniff, and Active.
Scatternet
Scatter net consists of several Piconets connected by devices.
These devices can be slaves in all Piconets or master in one Piconet and slaves in others .
CPU Core: Allows Bluetooth Module to handle inquiries and authentication.
Link Manager (LM) : LM software runs on CPU core. LM discovers other remote LMs and communicates with them via LMP(Link Manager Protocol) using services of the LC (Link Controller).
Link Controller (LC) : Performs Setup, Authentication, Link Configuration , along with LM
Gateway : It plays the role of the Master in the Piconet. It controls establishment of the network, and gathers related information.
Ease of installation –no wires needed.
Automatic Connection- doesn’t require too many buttons to be clicked
Inexpensive
Low Energy requirements
Less interference –Frequency Hop technique
It employs frequency hopping with 1600 hops/sec over 79 channels.
Thus, data is present for only 625 us on any 1 channel.
Pass key is upto 16 numeric characters long and 128 bit authenticated on any connection request.
Bluetooth is a mature technology
Bluetooth is a low-cost wireless technology
Bluetooth can be easily integrated into your products.
Bluetooth represents a great chance for sensor-networked architecture.
Kinnari Shah
[attachment=12969]
Origin
Bluetooth is a computing and telecommunications industry specification that describes how various communication devices like mobile phones, computers, and personal digital assistants can easily interconnect with each other using a short-range wireless connection.
Universal radio interface in the 2.4 GHz (ISM Band) frequency gives 10 to 100 meter range.
ISM stands for Industrial, Scientific and Medical Band which is license free in nearly all countries.
Eliminates cables
Inexpensive
Easy to set up and use
Readily available
Device compatibility
1 Mbps for Version 1.2
Up to 3 Mbps supported for Version 2.0
It is designed to have very low power consumption.
It uses Frequency Hopping to provide a robust and high B/W communication.
Named from Danish King Harald Bluetooth king of Denmark and Norway.
The logo was designed by a Scandinavian firm in which the characters H & B were used.
Invented in 1994 by L. M. Ericsson, Sweden
Bluetooth SIG (Special Interest Group) was founded by Ericsson, IBM, Intel, Nokia and Toshiba in Feb 1998.
More than 2500 members today.
Bluetooth version 1.0 , 1.1 , 2.0 ,3.0 and 4.0 have been released.
BLUETOOTH RADIO is a transceiver which transmits and receives modulated electrical signals from peer Bluetooth devices.
BASEBAND is the physical layer of the Bluetooth which manages physical channels and links along with services like error correction, data whitening, hop selection.
ACL is Asynchronous Connection-Less physical page link for transmitting data over the physical channels. ACL page link provides a packet switched connection between the master and all the active slaves.
SCO is Synchronous Connection-Oriented physical page link for voice-like information. It is a symmetric, point-to-point page link between the master and a specific slave. It behaves like a circuit-switched connection.
Link Manager essentially handles page link set-up, security and control. It provides services like authentication, encryption control, power control
L2CAP is the Logical Link Control and Adaptation Layer protocol. It provides connection-less and connection-oriented data services to upper layer protocols.It is also used for Multiplexing , Segmentation and Reassembling of packets.
SDP is Service Discovery Protocol for applications to discover which services are available and characteristics of the services that are available.
RFCOMM is a simple transport protocol, It supports up to 60 simultaneous connections between two Bluetooth devices.
Other Protocols-TCP (Transmission Control Protocol) , Jini technology, WAP Wireless Access Protocol.
Piconet
A Piconet is a collection of up to 8 devices one of which is a master.
These devices frequency hop together.
They use the master’s clock for synchronization.
Slaves can be in any of the following modes:
Park, Hold, Sniff, and Active.
Scatternet
Scatter net consists of several Piconets connected by devices.
These devices can be slaves in all Piconets or master in one Piconet and slaves in others .
CPU Core: Allows Bluetooth Module to handle inquiries and authentication.
Link Manager (LM) : LM software runs on CPU core. LM discovers other remote LMs and communicates with them via LMP(Link Manager Protocol) using services of the LC (Link Controller).
Link Controller (LC) : Performs Setup, Authentication, Link Configuration , along with LM
Gateway : It plays the role of the Master in the Piconet. It controls establishment of the network, and gathers related information.
Ease of installation –no wires needed.
Automatic Connection- doesn’t require too many buttons to be clicked
Inexpensive
Low Energy requirements
Less interference –Frequency Hop technique
It employs frequency hopping with 1600 hops/sec over 79 channels.
Thus, data is present for only 625 us on any 1 channel.
Pass key is upto 16 numeric characters long and 128 bit authenticated on any connection request.
Bluetooth is a mature technology
Bluetooth is a low-cost wireless technology
Bluetooth can be easily integrated into your products.
Bluetooth represents a great chance for sensor-networked architecture.
