bluetooth kusum
Post on 09-Apr-2018
221 Views
Preview:
TRANSCRIPT
-
8/7/2019 bluetooth kusum
1/12
-
8/7/2019 bluetooth kusum
2/12
Bluetooth wireless technology is an open specification for a lowcost, low power, short- range radio technology for ad-hoc wireless
communication of voice and data anywhere in the world
-
8/7/2019 bluetooth kusum
3/12
-
8/7/2019 bluetooth kusum
4/12
` What is Bluetooth?->Bluetooth is a short-range wireless communication technolgy
` Why this name?->It was taken from the 10th century Danish King Harald Blatand who unifiedDenmark and Norway.
` When does it appear?->1994 Ericsson study on a wireless technology to link mobile phones& accessories.
->5 companies joined to form the Bluetooth Special Interest Group
(SIG) in 1998.->First specification released in July 1999.
-
8/7/2019 bluetooth kusum
5/12
Notebook PCs &Desktop computers
Printers PDAs
Other handhelddevices
Cell phones Wireless peripherals:
Headsets Cameras
CD Player
TV/VCR/DVD
Access Points
Telephone AnsweringDevices
Cordless Phones
Cars
-
8/7/2019 bluetooth kusum
6/12
` Originally conceived as a cable replacement technology.
` Short-range wireless solutions
` Open specifications
` Voice & data capability
` Worldwide usability
` Other usage models began to develop:
->Personal area network(PAN)
->Ad-hoc networks
->Data/voice access points->wireless telemetics
-
8/7/2019 bluetooth kusum
7/12
Connection TypeSpread Spectrum (Frequency Hopping)
& Time Division Duplex (1600 hops/sec)
Spectrum2.4 GHz ISMOpen Band (79 MHz of
spectrum = 79 channels)
Modulation Gaussian FrequencyS
hift KeyingTransmission Power 1 mw 100 mw
Data Rate 1 Mbps
Range 30 ft
Supported Stations 8 devicesData Security Authentication Key 128 bit key
Data Security Encryption Key 8-128 bits (configurable)
Module size 9 x 9 mm
-
8/7/2019 bluetooth kusum
8/12
` Bluetooth will support wireless point-to-point and point-to-
multipoint (broadcast) between devices in a piconet.
` Point to Point Link
Master - slave relationship
Bluetooth devices can function as masters or slaves` Piconet
It is the network formed by a Master and one or more
slaves (max 7)
Each piconet is defined by a different hopping channel to
which users synchronize to
Each piconet has max capacity (1 Mbps)
m s
s s s
m
-
8/7/2019 bluetooth kusum
9/12
-
8/7/2019 bluetooth kusum
10/12
` Security Measures
Link Level Encryption & Authentication.
Personal Identification Numbers (PIN) fordeviceaccess.
Long encryption keysare used (128 bit keys).
These keysare nottransmitted overwireless. Other
parametersaretransmitted overwireless which in
combination with certain information known to thedevice,
can generatethe keys.
Furtherencryption can bedoneattheapplication layer.
-
8/7/2019 bluetooth kusum
11/12
` Success of Bluetooth depends on how well it is
integrated into consumer products
Consumers are more interested in applications than the
technology
Bluetooth must be successfully integrated into consumerproducts
Must provide benefits for consumer
Must not destroy current product benefits
`
Key Success Factors Mass Production at Low Cost
Ease of Use
End User Experience
-
8/7/2019 bluetooth kusum
12/12
THANKS
top related