Bluetooth technology presentation
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Bluetooth is a wireless technology standard for exchanging data over short distances using short-wavelength UHF radio waves in the industrial, scientific and medical radio bands. It allows for the replacement of cables that traditionally connect devices, enabling devices such as phones, laptops, printers, digital cameras, and video game controllers to establish short-range radio links to connect and exchange information. Bluetooth technology works as a universal bridge between existing data networks and provides a mechanism for devices to form short-term networks when in close proximity without needing to be part of a permanent network infrastructure.
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- 2. Introduction to Bluetooth Technology
- 3. Bluetooth is a radio frequency specification for short range, point to point and point to multi point voice and data transfer. In spite of facilitating the replacement of cables, Bluetooth technology works as an universal medium to bridge the existing data networks, a peripheral interface for existing devices and provide a mechanism to form short ad hok network of connected devices away from fixed network infrastructures.
- 4. Why it’s name is Bluetooth?
- 5. Bluetooth was named for the 10th Century Viking king , Harald Blatand (A.K.A., Bluetooth) who peacefully united all the tiny island kingdoms of Denmark, southern Sweden, and southern Norway into one country . In keeping with its namesake, Bluetooth, the new low-cost radio technology, is designed to unite or connect all different types of devices to effectively work as one.
- 6. How Bluetooth Technology Work ?
- 7. The technology of Bluetooth centers around a 9mm x 9mm microchip, which functions as a low cost and short range radio link. Bluetooth Technology provide a 10 meter personal bubble that support simultaneous transmission of both voice and data for multiple devices. Up to 8 devices can be connected in a piconet, and up to 10 piconets can exist within the 10 meter bubble. Each piconet support up to 3 simultaneous full duplex voice devices. Bluetooth wireless technology is designed to be as secure as a wire with up to 128-bit public/private key authentication, and streaming cipher up to 64 bit based on a5 security
- 8. Transmission types and rates : The baseband (single channel per line) protocol combines circuit and packet switching. To assure that packets do not arrive out of order, slots (up to five) can be reserved for synchronous packets. As noted earlier, a different hop signal is used for each packet. Circuit switching can be either asynchronous or synchronous. Up to three synchronous (voice) data channels, or one synchronous and one asynchronous data channel, can be supported on one channel. Each synchronous channel can support a 64 Kb/s transfer rate, which is fully adequate for voice transmissions. An asynchronous channel can transmit as much as 721 Kb/s in one direction and 57.6 Kb/s in the opposite direction. It is also possible for an asynchronous connection to support 432.6 Kb/s in both directions if the link is symmetric.
- 9. Data Transmission Data Transmission synchronous Asynchronous Voice Data
- 10. Network Arrangement Scatternet Piconet A Piconet B 1 2 3 4 1 2
- 11. Error correction and security
- 12. Error correction Types :- Forward Error Correction (FEC) Automatic Repeat Request (ARQ) Security Provided Three Ways :- pseudo-random frequency band hops Authentication encryption
- 14. Bluetooth connections are established via the following techniques: 1.Standby 2.Page/Inquiry 3.Active: 4.Hold 5.Sniff 6.Park
- 15. USAGE MODEL
- 16. Bluetooth Model is Used voice/data access points peripheral interconnects Personal Area Networking (PAN).
- 17. Voice/Data Access Point Voice/data access points is one of the key initial usage models and involves connecting a computing device to a communicating device via a secure wireless link
- 18. Peripheral Interconnects The second category of uses, peripheral interconnects , involves connecting other devices together
- 19. Personal Area Networking: The last usage model, Personal Area Networking (PAN ), focuses on the ad-hoc formation and breakdown of personal networks
- 21. It separates the frequency band into hops. This spread spectrum is used to hop from one channel to another, which adds a strong layer of security. Up to eight devices can be networked in a piconet. Signals can be transmitted through walls and briefcases, thus eliminating the need for line-of-sight. Devices do not need to be pointed at each other, as signals are omni-directional. Governments worldwide regulate it, so it is possible to utilize the same standard wherever one travels
- 23. ADVANTAGES OF BLUETOOTH TECHNOLOGY
- 24. No line of site restrictions as with IrDA. power consumption makes integrated in battery powered devices very practical. 2.4 GHz radio frequency ensures worldwide operability. Tremendous momentum not only within the computer industry but other industries like cellular telephones and transportation.
- 25. APPLICATIONS
- 26. The Internet Bridge An extension of this model could be a mobile computer that allows surfing the Internet irrespective of the location of the user, and regardless of whether the user is cordlessly connected through a mobile phone (cellular) or through a wire line connection (e.g. PSTN, ISDN, LAN, xDSL). 2. Automatic Check-in Hotels are testing, or plan to test, services that allow guests to check in, unlock room doors and even control room temperature with handheld devices equipped with Bluetooth Technology
- 27. References : 1. The official Bluetooth site, http:/www.bluetooth.com 2. http://www.intel.com/mobile/bluetooth
- 28. Thank You
- 29. ? Any Question ?