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October 2009 - PowerPoint PPT Presentation


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October 2009. Car Communication Based on Bluetooth Links. Michael HERVE. Plan of the Presentation. Introduction Bluetooth Link Interest of Bluetooth for car communication Different phases of Bluetooth Hands-Free connection Improvements Conclusion. Introduction. Origin of Bluetooth

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Presentation Transcript
slide1

October 2009

Car Communication Based on Bluetooth Links

Michael HERVE

slide2

Plan of the Presentation

  • Introduction
  • Bluetooth Link
  • Interest of Bluetooth for car communication
  • Different phases of Bluetooth Hands-Free connection
  • Improvements
  • Conclusion
slide3

Introduction

  • Origin of Bluetooth
  • Idea of universal compatibility
  • Wireless Link
  • Hands-Free systems
  • Interest of using Bluetooth for car communication
slide4

Introduction

  • Bluetooth Link
  • Interest of Bluetooth for car communication
  • Different phases of Bluetooth Hands-Free connection
  • Improvements
  • Conclusion
slide5

Bluetooth Link

Mobile Network Link

Bluetooth Link

Bluetooth Device

Mobile Phone

slide6

Bluetooth Link

Mobile Network Link

Mobile Phone

slide7

Bluetooth Link

Mobile Network Link

Bluetooth Link

Bluetooth Device

Mobile Phone

slide8

Bluetooth Link

Mobile Network Link

Bluetooth Link

Bluetooth Device

Mobile Phone

slide9

Bluetooth Coding

sinus wave (440 Hz)

slide10

Bluetooth Coding

sinus wave (440 Hz) encoded by bluetooth

slide11

Bluetooth General Information

  • Wireless Connection (2.4 Ghz)
  • Low Power (1mW for Hands Free) compare to 2W for GSM
  • Idea of universal compatibility
  • Wireless Link
  • Hands-Free systems
  • Interest of using Bluetooth for car communication
slide13

Bluetooth profiles

  • What is a profile ?

Interface specification for communication between devices

  • Large range of services for bluetooth devices (Hands-free, A2DP (audio streaming), File Transfert, Printer, IRMC, …)
  • Devices must be able to know which profiles are in commun with devices that want to be connected with.

Discovery Protocol

slide14

Introduction

  • Bluetooth Link
  • Interest of Bluetooth for car communication
  • Different phases of Bluetooth Hands-Free connection
  • Improvements
  • Conclusion
slide15

Interest of Bluetooth for car

  • Enable the connection with different phones (for the different users of the car)
  • No Harware/cable is needed
  • High compatibility between phone and the device
    • Phonebook synchronisation
    • Ringtone
    • Volume
    • Accept/Refuse call
    • Discret Mode
    • DTMF
  • Software can be updated easily
slide16

Interest of Bluetooth for car

  • Security Reasons
  • Goal : having all phone functionnalities with an easier

HMI (Human to Machine Interface)

  • Hands must be substituted by the voice
  • Bluetooth allows universal links with most of the phones
slide17

Introduction

  • Bluetooth Link
  • Interest of Bluetooth for car communication
  • Different phases of Bluetooth Hands-Free connection
  • Improvements
  • Conclusion
slide18

Different phases of Bluetooth Hands free kit connection

Hello, I am looking for bluetooth devices

Discovery

Pairing

Hello, I am an available Bluetooth device

Detection of Profiles

Connection

Data Synchronisation

slide19

Different phases of Bluetooth Hands free kit connection

What is your authentification

Code ?

Discovery

1234…

This code has to be typed on your keyboard

Pairing

Detection of Profiles

Connection

Ok !

Now we are paired

Data Synchronisation

slide20

Different phases of Bluetooth Hands free kit connection

What type of profile do you support ?

Discovery

Pairing

I can do headset and hands-free.

What about you ?

Detection of Profiles

Connection

Data Synchronisation

slide21

Different phases of Bluetooth Hands free kit connection

Discovery

Pairing

Ok, we are now connected in Hands-free.

Detection of Profiles

Connection

I can do hands-free.

Data Synchronisation

slide22

Different phases of Bluetooth Hands free kit connection

To complete my phonebook, I have to synchronise with your contacts

Discovery

Pairing

Detection of Profiles

Connection

Ok, I transfer my 163 contacts.

Data Synchronisation

slide23

Alessandro Del Piero

Gianluigi Buffon

Fabio Cannavaro

Fabio Grosso

Tiago

David Trezeguet

Phonebook synchronisation

  • The Hands Free synchronizes its phonebook with the contacts on the mobile phone.
  • The phonebook is vocally available at any time through Voice Recognition, Text To Speech & Voice Tags.
  • Synchronisation is done only once (at first connection)

Alessandro Del Piero

Automatic

Gianluigi Buffon

Fabio Cannavaro

Fabio Grosso

Tiago

David Trezeguet

slide24

Introduction

  • Bluetooth Link
  • Interest of Bluetooth for car communication
  • Different phases of Bluetooth Hands-Free connection
  • Improvements
  • Conclusion
slide25

Disabling phone algorithms

Could you please disable your signal processing algorithms ?

Ok !

slide26

Disabling phone algorithms

Could you please disable your signal processing algorithms ?

No !

???

Ok

But in fact it’s a no !

slide28

Mobile phone with Gain 2

Common gain on the audio chain

I can hear you very well …

Telephony

Network

Mobile phone with Gain 1

Bluetooth Device

I CANNOT HEAR YOU !

slide29

Mobile phone with Gain 2

Common gain on the audio chain

I can hear you very well …

Telephony

Network

Mobile phone with Gain 1

Bluetooth Device

I CANNOT HEAR YOU !

slide31

Introduction

  • Bluetooth Link
  • Interest of Bluetooth for car communication
  • Different phases of Bluetooth Hands-Free connection
  • Improvements
  • Conclusion
slide32

Conclusion

  • Presentation of Bluetooth
  • Integration of Bluetooth in car communication
  • Limits and exemple of problems encountered
  • The future of Bluetooth
slide33

Thank you !

QUESTIONS ?