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8/9/2019 Sunil Bluetooth
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BLUETOOTH TECHNOLOGYPrepared By: Sunil
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Whats With the Name?
The name Bluetooth was named after 10th centuryViking king in Denmark Harald Bluetooth who unitedand controlled Denmark and Norway.
The name was adopted because Bluetooth wirelesstechnology is expected to unify the
telecommunications and computing industries
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Who Started Bluetooth?
Bluetooth Special Interest Group (SIG)
Founded in Spring 1998
By Ericsson, Intel, IBM, Nokia, Toshiba;
Now more than 2000 organizations joint the SIG
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What Is Bluetooth?
Bluetooth is an open standard for short-rangedigital radio to interconnect a variety of devices Cell
phones, PDA, notebook computers, modems,
cordless phones, pagers, laptop computers, printers,cameras by developing a single-chip, low-cost,radio-based wireless network technology
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Bluetooth
Simplifying communications between:- devices and the internet- data synchronization
Operates in licensed band at 2.4ghz
Uses frequency hoping spread spectrum Omni directional, no requiring line of sight Bluetooth offers data speeds of up to 1 Mbps up to 10
meters (Short range wireless radio technology ) Unlike IrDA, Bluetooth supports a LAN-like mode
where multiple devices can interact with each other. The key limitations of Bluetooth are security and
interference with wireless LANs. Short range wireless radio technology
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Bluetooth
Bluetooth is a PAN Technology
Offers fast and reliable transmission for
both voice and data
Support both packet-switching and circuit-switching
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Bluetooth
Personal Area Network (PAN) Bluetooth isa standard that will
Eliminate wires and cables between both
stationary and mobile devices Facilitate both data and voice
communications
Offer the possibility of ad hoc networks and
deliver synchronicity between personal
devices
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Bluetooth Topology
Bluetooth-enabled devices can automaticallylocate each other
Topology is established on a temporary and
random basis Up to eight Bluetooth devices may be
networked together in a master-slave
relationship to form a Piconet
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Cont.
One is master, which controls and setup thenetwork
All devices operate on the same channel and
follow the same frequency hopping sequence Two or more piconet interconnected to form ascatter net
Only one master for each piconet
A device cant be masters for two piconets
The slave of one piconet can be the master ofanother piconet
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A piconet
is an ad-hoc computer networkof devicesusing Bluetooth technology protocols toallow one masterdevice to interconnect
with up to seven active slave devices Up to 255 further slave devices can be
inactive, orparked, which the master device
can bring into active status at any time.
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A Typical Bluetooth Network Piconet
Master sends its globally unique 48-bit id andclock Hopping pattern is determined by the 48-bit device ID Phase is determined by the masters clock
Why at most 7 slaves? (because a three-bit MAC adress is used). Parked and standby nodes
Parked devices can not actively participate in thepiconet but are known to the network and can be
reactivated within some milliseconds 8-bit for parked nodesNo id for standby nodes Standby nodes do not participate in the piconet
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Bluetooth Frequency
Has been set aside by the ISM( industrial ,sientificand medical ) for exclusive use of Bluetooth wirelessproducts
Communicates on the 2.45 GHz frequency
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Frequency Selection
FH is used for interference mitigationand media access;
TDD (Test-Driven Development) is usedfor separation of the transmission
directions In 3-slot or 5-slot packets
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How Does It Work?
Bluetooth is a standardfor tiny, radio frequencychips that can be plugged
into your devices
The information is then transmitted to your device
These chips were designed totake all of the information thatyour wires normally send, and
transmit it at a specialfrequency to something
called a receiverBluetooth chip.
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Bluetooth Chip
RFBaseband
Controller
Link
Manager
Bluetooth Chip
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SPECIFICATIONS
Application Specifications These specifications include the following
Profiles Cordless Telephony
Serial Port
Headset Intercom
Dialup Networking
Fax
File Transfer Service Discovery Application
Generic Access
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PowerManagement Benefits
Cable Replacement Replace the cables for peripheral devices
Ease of file sharing
Panel discussion, conference, etc. Wireless synchronization
Synchronize personal information contained in the addressbooks and date books between different devices such asPDAs, cell phones, etc.
Bridging of networks Cell phone connects to the network through dial-up
connection while connecting to a laptop with Bluetooth.
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Bluetooth Devices
Telephones Headsets Computers Cameras
PDAs Cars Etc
Bluetooth will soon be enabled in
everything from:
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Bluetooth Products 1
Bluetooth-enabledPC Card
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Bluetooth Products 2
Bluetooth-enabledPDA
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Bluetooth Products 3
Bluetooth-enabledCell Phone
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Bluetooth Products 4
Bluetooth-enabledHead Set
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Usage Models
Cordless computer Ultimate headset
Three-in-one phone
Interactive conference (file transfer)
Direct network access
Instant postcard
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Wireless Technologies
There are two technologies that have beendeveloped as wireless cable replacements:
Infrared (IRDA) and radio (Bluetooth).
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Why Not Infrared?
Intended for point to point links Limited to line of sight have a narrow angle (30 degree cone), Low penetration power
Distance covered is low(1 meter approx) have a throughput of 9600 bps to 4 Mbps IrDA has proven to be a popular technology with
compliant ports currently available in an array of
devices including: embedded devices, phones,modems, computers (PCs) and laptops, PDAs,printers, and other computer peripherals
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Compare Infrared, Bluetooth
Bluetooth Infrared
ConnectionType
SpreadSpectrum
Infrared, narrowbeam
Spectrum 2.4GHz Optical 850nano meters
Data Rate 1Mbps 16Mbps
Range 30 Feet 3 Feet
SupportedDevices
Upto 8 2
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Advantages (+)
Wireless (No Cables)
No Setup Needed
Low Power Consumption (1 Milliwat)
Industry Wide Support
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Disadvantages (-)
Short range (10 meters)
Small throughput rates- Data Rate 1.0 Mbps
Mostly for personal use (PANs) Fairly Expensive
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Bluetooths Future
The future of this technology becoming a standard is likely
With a strong industry pushing behind it, success is inevitable.
Often, with new technology, early changes meanreconstruction. Not With Bluetooth, instead, there will be
an improvement to the existing standard.
Bluetooth will soon be known as Bluetooth 2.2 as they are trying todevelop the product to better fulfill the needs of consumers
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The End
Thank You, for attending my presentation.