THE BLUETOOTH BLUES IMAGINE WORLD WITHOUT WIRES
Submitted by, Sanjeev Kumar Tiwary 7th sem Electronics & telecommunication engineering Padmashree Krutartha Acharya college of engineering.
POINTS TO DISCUSS • • • • • • • • • • •
History of Bluetooth What is Bluetooth? Technical viewpoint Potential uses Bluetooth stack protocol Technical information Specifications and features Future of Bluetooth Security Competing Technologies of Bluetooth Conclusion
HISTORY • The Bluetooth specification was first developed in 1994 by Sven Mattison and Jaap Haartsen, who were working for Ericsson Mobile Platforms in Lund, Sweden
• The specifications were formalized by the Bluetooth Special Interest Group (SIG). The SIG was formally announced on May 20, 1998 • The Bluetooth system is named after Harald Blatand, a tenth-century Danish Viking king, who united Denmark and Norway
WHAT IS BLUETOOTH? • Bluetooth is a new communication system for electrical devices in the home. A Bluetooth is a wireless system that uses radio waves for communication. It has the ability to communicate with many different devices at once without interference • Bluetooth is an open standard for shortrange transmission of digital voice and data that supports point-to-point and multipoint applications • Bluetooth is based on a low-cost, low power, short range radio link. Bluetooth cuts the cord that used to tie up digital devices. when two Bluetooth devices come within 50 meters range of each other , they establish a connection together
POTENTIAL USES OF BLUETOOTH • • • • •
• • • •
Phones and pagers Modems LAN access devices Headsets Notebook computers Desktop and handheld computers Printers Fax machines Keyboards & Joysticks
BLUETOOTH PROTOCOL STACK • The heart of the Bluetooth specification is the Bluetooth protocol stack By providing well-defined layers of functionality, the Bluetooth specification ensures interoperability of Bluetooth devices and encourages adoption of Bluetooth technology. • Bluetooth is defined as a layered protocol architecture consisting of core protocols, cable replacement and telephony control protocols, and adopted protocols
CORE ARCHITECTURAL BLOCKS • Channel manager The channel manager is responsible for creating, managing, and destroying L2CAP channels for the transport of service protocols
• L2cap resource manager The L2CAP resource manager block is responsible for managing the ordering of submission of fragments to the baseband
• Device manager The device manager is the functional block in the baseband that controls the general behavior of the Bluetooth enabled device
• Link manager The link manager is responsible for the creation, modification, and release of logical links
• Link controller The link controller is responsible for the encoding and decoding of
Bluetooth packets
SECURITY • Non secure mode No security measures are utilized. Any other Bluetooth device can access the data and services of a device.
Authentication
• Service level enforced security Enacts security measures based on authorization. In this mode, different trust levels can be defined for each of the services offered by the device
• Link level enforced security Requires both authentication and encryption. The Bluetooth device initiates security procedure before the channel
is established.
Security mode
HEALTH CONCERNS • That the carrier waves used by Bluetooth's transmitters use the same frequency range as microwave Ovens (Bluetooth uses 2.402 GHz to 2.480 GHz). • Actually, the transmitting power is far too weak to be noticeable for humans. When using a wireless phone or a Bluetooth device, some of the emitted RF energy is absorbed by the body. The penetration depth is about 1.5 cm at 2450 MHz which means that the absorption is very superficial. • The radiated output power of Bluetooth devices is low when compared to other widely used mobile devices, so it is assumed that the potential for health risks are also correspondingly lower
INFRARED TECHNOLOGY • One of the 3 IrDA-standards that are used today is called ”IrDA-Data”, and this standard is primarily meant for data transmission. But the main differences as compared to Bluetooth are: • IrDA is not omnidirectional, as is Bluetooth. The IrDA-beam has to be aimed at the receiving antenna. • IrDA must have a free line of sight. • IrDA is point-to-point; only 2 units at a time can communicate
BLUETOOTH vs WI-FI • The popular term for a high-frequency wireless local area network. The consumerfriendly name for the 802.11b engineering standard Wi-Fi uses the same radio frequencies as Bluetooth • Bluetooth has generally lower speed than that of 802.11b wireless LANs. • Bluetooth components (chips and radios) and device adapters are cheaper than wireless LAN components and adapters. • Bluetooth chips have lower power consumption - less drain on battery
CONCLUSION • The hottest new technological wave of the future is Bluetooth. This groundbreaking technology is growing so fast that it will be built in to products. Ease of use combined with increasing availability leads us to believe that Bluetooth will soon become common as big hair. • As Bluetooth technology becomes more main stream, go ahead and take it for a whirl and enjoy a cable less and hands-free environment.
THANK YOU!!!
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