Embedded Bluetooth

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Embedded Bluetooth Gang Xie presents to EE281
Class Stanford University 11/22/2002
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Bluetooth Was Originally a Cable-Replacement
Technology
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In the Office
You arrive at the office
While in a meeting,
When inspecting equipment,
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On the road
You arrive at the airport
You enter the airport waiting lounge,
You get on the rent-a-car bus,
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Documentation
Profiles describe how the technology is used,
i.e., how different parts of the specification
can be used to fulfill a desired function for a
Bluetooth device.
Specification describes how the technology works,
i.e., the Bluetooth protocol architecture.
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Bluetooth Specification Protocol Stack
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Bluetooth Profile Structure
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Radio Specification

• PDU format
• The Bluetooth system is operating in the 2.4 GHz
  ISM (Industrial Scientific Medicine) band. The
  regulatory range of this frequency band is 2.400
  2.4835 GHz.
• The Bluetooth radio accomplishes spectrum
  spreading by in 79 hops displaced by 1 MHz.
• Radio modulation uses GFSK.

Operating frequency bands
0
1
2
78
2.402 GHz
2.480 GHz
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Baseband Specification
There is one master and one or more slaves in
each piconet
Packet format
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Service Discovery Protocol Specification

• Protocol Data Unit format
• PDU ID identifies the type of PDU
• Transaction ID uniquely identifies request PDUs
  and is used to match response PDUs to request
  PDUs
• Parameter Length

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Bluetooth Design and Development Tools

• Design tools RF and digital design tools,
  simulators, and other tools
• Development tools including modules, chipsets,
  RA and digital kits, protocol implementations and
  other tools
• Testing/evaluation tools

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Key Features

• Robustness
• Low complexity
• Low power battery powered
• Low cost about 5

• Fast acknowledgement
• Fast frequency hopping scheme
• Shorter packets

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References

• http//www.bluetooth.com/
• http//www.palowireless.com/
• http//e-www.motorola.com/
• http//www.brainboxes.com/
• http//www.google.com/