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Bluetooth

Submitted to: Doctor : Rabie Ramadan Submitted by: Khaled Mohammed Ali Hassan Master’s Student, Cairo University/20 11. Bluetooth. BlueTooth- Some Specifications. Uses unlicensed 2.402 - 2.480 GHz frequency range Frequency hopping spread spectrum 79 hops separated by 1 MHz

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Bluetooth

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  1. Submitted to: Doctor : Rabie Ramadan Submitted by: Khaled Mohammed Ali Hassan Master’s Student, Cairo University/2011 Bluetooth

  2. BlueTooth- Some Specifications • Uses unlicensed 2.402 - 2.480 GHz frequency range • Frequency hopping spread spectrum 79 hops separated by 1 MHz • Maximum frequency hopping rate: 1600 hops/sec • Nominal range: 10 cm to 10 meters • Nominal antenna power: 0 dBm • One complete Bluetooth data packet can be transmitted within each 625 msec hop slot

  3. Potential Bluetooth Markets

  4. Bluetooth Protocol Stack • Adopted Protocols • PPP(Point-To-Point Protocol) • TCP/UDP/IP • OBEX-Session Protocol for IrDA(Infrared Data Association) • Contents Fromat(e.g. vCard, vCalendar) • WAP-Wireless Application Protocol

  5. Bluetooth Protocol Stack

  6. Bluetooth Security • Supports Unidirectional or Mutual Encryption based on a Secret Link key Shared Between Two Devices • Security Defined In 3 modes: • Mode1- No Security • Mode 2 - Service Level Security: Not Established Before Channel is Established at L2CAP • Mode 3 - Link Level Security: Device Initiates Security Before LMP Link is Setup

  7. Bluetooth Security • Devices and Services can be Set for Different Levels of Security • Two Trust Levels are Set for Devices • Trusted Device: Fixed Relationship and Unrestricted Access to All Services • Untrusted : No Permanent relationship and Restricted Services

  8. Bluetooth Security • 3 Levels of Service Access • Require Authorization and Authenication • Require Authentication Only • Default Security for Legacy Applications

  9. The Challenges • Future work is aimed to develop and design a blue tooth-enabled data concentrator for data acquisition and analysis.

  10. CONCLUSION • Blue tooth represents a great chance for sensor-networked architecture. This architecture heralds wireless future for home and also for industrial implementation. With a blue tooth RF link, users only need to bring the devices with in range, and the devices will automatically link up and exchange information. • Thus implementation of blue tooth technology for sensor networks not only cuts wiring cost but also integrates the industrial environment to smarter environment.

  11. CONCLUSION • Today, with a broader specifications and a renewed concentration on interoperability, manufacturers are ready to forge ahead and take blue tooth products to the market place. Embedded design can incorporate the blue tooth wireless technology into a range of new products to meet the growing demand for connected information appliances.

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