Case Study On Bluetooth Technology x6f3t

Presentation of Presented by Student of BBA 1st Semester Section : F

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History Bluetooth SIG Introduction Architecture  

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Piconet Scatternet

System technology System architecture

Contents    

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Bluetooth Development Bluetooth Security Infrared vs. Bluetooth Device that use Bluetooth Advantages & disadvantages Conclusion

History What’s with the Name? King Harald Bluetooth or (Blatand)(A.D.940 to 985)  10th century Viking King in Denmark  Credited for uniting the country & established Christianity Who started Bluetooth?  Ericsson mobile communication 1st introduced BT in 1994  Bluetooth special interest group (SIG) formed in Feb 1998 with 5  Ericsson, Nokia, IBM, Intel & Toshiba 

The rune stone of King blatand

History (Continue) Promoter’s Group  SIG founder’s plus 3COM, Lucent, Microsoft, Motorola  Now, over 1900 Where Did the Logo Come From? 

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The Bluetooth logo design merges the Germanic runes analogous to the modern Latin letters H and B: (for Harald Bluetooth) (Hagall) and (Berkanan) merged together, forming a bind rune.

The logo of Bluetooth

Introduction What is Bluetooth?  A wireless connection that enables devices to exchange information.  It is a short range communication technology facilitating data transmission over short distance from fixed.  It’s a short range radio technology  Intended to create PAN  Operate range of 10 meters (optional 100 meters mode)  1 mw transmission Power

A typical Bluetooth mobile phone headset.

Bluetooth Architecture The main architecture of Bluetooth :  Piconet  Scatternet

Piconet 

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Maximum devices in a piconet :  1 master  7 active slaves  255 standby slaves Master controls entire piconet Device can participate in more than 1 piconet

Structure of piconet

Scatternet 

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A group of piconets with overlapping areas of coverage Each piconet is identified by different frequency hopping Sequence Slave to 1 piconet can be master to another Structure of scatternet

System Technologies Mobile Application • Written in J2ME Technology • Has GUI • Use SMS to control / Monitor home devices

Home Server

PIC Microcontroller

• SMS notification is sent by Server • Receive control/monitor command from Mobile application • open BT connection with corresponding device

• Programmed using C • Accept the BT Connection from Home Server • Either change device status or read device status

SMS Message has command type and device name PIC microcontroller adapted with BT

SMS Message has monitor results Mobile Application has GUI

Home Server PIC microcontroller adapted with BT

System Architecture: Overall System

System Architecture: Home Server Home Server Jsms API 2.1.2

Bluecove

Comm API 2.0

Windows BT Stack

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The Home Server is the core of the system.

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It is connected Via GSM Modem to mobile phone.

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It is connected to the home devices via Bluetooth connection.

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The server is written using Java

Java 2 Virtual Machine Home Server Software Architecture

Bluetooth Development Local Area Network (LAN) • Small Network • Radio Communication • Fixed with limited mobility • Small Distances

Wireless Phone Network

• Large Network • Radio Communication • Relays used • Mobility • Large Distances

Bluetooth Security 

Provides multiple levels of security    

Access Level Data Encryption Data encoding Authentication

System Security: Access Level 

Each assigned access level.

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Access level defines actions that can be performed.

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Only supervisor can add a new & assign privileges.

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Access Level: reduces likelihood of misuse and enhances overall system robustness.

System Security: Encryption 

BT to Home server: security is achieved by the GSM encryption standard implemented at both ends. This is highly robust & no additional security needed.

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Simplified AES (Advanced Encryption Standard) used to secure Bluetooth communication in the system.

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In Bluetooth communication, enquiry occurs at data transference time.

Infrared vs. Bluetooth Infrared (IrDA) : 

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IrDA is uses in remote control for TV, the stereo , the air conditioner etc. In IrDA two devices which establish a connection must take place within face of each other for transmission. IrDA can check only 1 electronic device at the same time.

Bluetooth (BT): 

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BT is uses to Create PAN, to connect BT headset with cell phone. BT device communicate with each other its 10 meter range even when they are not in the same place. BT device can communicate with multiple devices in any certain time.

Advantages & disadvantages Advantages :  Bluetooth Device are wireless.  It’s automatic.  Low interference.  Instant PAN (Personal Area Network)  it’s upgradeable.  Share voice data.  provides secure, flexible and comfortable services inside and outside the home

Disadvantages :  Bluetooth device are expansive.  Relatively slower, it’s about 723 Kbps.  It’s communication range is limited. (10 meters or 30 ft)  Trough Bluetooth, different viruses enter to our PC or Cell phone& Create various Problems.

Devices that Use Bluetooth 

A limited, but growing number of devices use Bluetooth at present. 

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Digital cameras and camcorders Printers Scanners Cell Phones PDAs Laptops Keyboards and Mice Headsets In-car handsfree kits

The future of Bluetooth 

Future work: 

multimedia devices.

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Mix of Bluetooth and WiFi

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logging with other device & share data.

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Automatic configuration of new devices.

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Incorporate intelligent sensors.

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Autonomous monitoring and decision making.