Team Topic Presentation Team 6

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Team Topic PresentationTeam 6

• BLUETOOTH
• 
  

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What is Bluetooth?

• Cable Replacement
• Automatic Connectivity
• Hidden Computing
• Few Examples
• Automatic Door Opening.
• Automatic synchronization of your PDA, Cell
  Phone, Desktop and Laptop.

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Why is it called Bluetooth?

• Named after Herald Blataand.
• Blataand means Bluetooth.
• Unified Denmark and Norway during 10th century.
• Bluetooth unifies telecommunication and computing
  devices.

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The History of Bluetooth

• 1994 - L.M. Ericcson of Sweden
• Decided to keep this technology license free.
• 1998 SIG was formed.
• Now, there are more than 2500 members.

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How does Bluetooth work?

• Short range, adhoc networks called PAN or
  piconets.
• Maximum 8 units in a piconet. 1 Master and 7
  Slaves.
• Part of different piconets at the same time.
• Dynamic and automatic connectivity.
• Radio frequency. 2.4 GHz band. 10M 100 M
  range.
• Data rate 1 Mbps.
• Inquiry and Paging procedures are used to
  establish connectivity.

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How is it different?

• IrDA OBEX Infrared Tech.
• Line of sight required.
• Cannot link more than two devices at the
  same time.
• Cellular Technology Radio frequency Tech.
• Communication is through a base unit.
• Wireless LAN IEEE 802.11 standard.
• Meant for Heavy traffic . (11 Mbps)
• Server based architecture. (Permanent
  Network)
• WAP Radio frequency Tech.
• Limited to providing internet access to
  mobile devices like PDA and Cell phones.

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Technical challenges addressed by BT

• Universal acceptance and usage
• Small size
• Low power consumption
• Adaptability
• Automatic connectivity and synchronizer
• Security
• Inter Operability

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The BT System Architecture

• Radio Layer
• Operates in 2.4 GHz band.
• Bandwidth 2400 2483 MHz. 79 Channels.
• Uses Spread Spectrum Communication.
• Hops frequency _at_ 1600 times a second. Hop
  slot is
• 625 micro seconds.
• Short data packets.
• Highly redundant error correction scheme

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System Architecture

• Baseband
• Controls the radio
• Provides frequency hop sequence
• Provides lower level encryption for secure links
• Two types of Links SCO and ACL
• Provides functionalities for establishing
  connections.

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System Architecture

• Link Manager Protocol
• Piconet management
• Link configuration
• Security functions

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System Architecture

• Logical Link Control and Adaptation Protocol
• Multiplexing
• Segmentation and Reassembly
• Quality of Service

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System Architecture

• Host Controller Interface
• Additional Layers required
• HCI Driver
• HCI

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System Architecture

• Application Layer
• Support Protocols required for direct access
  between application and L2CAP
• TCS Telephony Control Protocol Spec
• RFCOMM RF Communications
• SDP Service Discover Protocol

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Usage Models

• Proposed Usage Models
• Three in One Phone
• Briefcase Trick
• Automatic Synchronizer
• Wireless Headsets

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Future

• 40 of all electronic trading by 2004
• Sale of embedded chip (BT chips) for various
  products will touch 700 M mark by 2006.
• Bluetooth chips will cost laptop manufacturers
  around 30/-
• SIG is aiming at making the BT chips available at
  5/- per module.