4_BT_ - 4b. Bluetooth Communications 1. Introduction 2....

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
1 4b. Bluetooth Communications 1. Introduction 2. Bluetooth Architecture, Piconets / Scatternets 3. Bluetooth Radio System Architecture a. Radio Spectrum b. Interference Immunity c. Multiple Access Scheme d. The Modulation Scheme e. Medium Access Control 4. The Bluetooth Frame Format 5. Voice and Data Links 6. Packed-Based Communication a. Physical Link Definition b. Connection Establishment c. Error Correction d. Power Management e. Interpiconet Communications 7. Bluetooth Applications 8. The Bluetooth Protocol Architecture (T. 310-317) 1. The Physical Radio Layer 2. The Baseband Layer 3. The L2CAP 4. The Middleware Layer 5. The Application Layer
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Bluetooth Communications . 802.15 A cable replacement technology 1 Mb/s symbol rate Range 10+ meters Single chip radio at low power & low price ($5) Bluetooth is considered as a secure short-range wireless network. Why not use Wireless LANs? - power - cost No Another wireless LAN
Background image of page 2
3 802.11 Replacement for Ethernet Supported data rates 11, 5.5, 2, 1 Mbps; and recently up to >20 Mbps in 2.4 GHz up to 54 Mbps in 5.7 GHz band (802.11 a) Range Indoor 20 - 25 meters Outdoor: 50 – 100 meters Transmit power up to 100 mW Cost: Chipsets $ 35 – 50 AP $200 - $1000
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Bluetooth working group history February 1998: The B luetooth S pecial I nterest G roup promoter : Ericsson, IBM, Intel, Nokia, Toshiba. May 1998: Announcement of the Bluetooth SIG . July 1999: version 1.0A is released. December 1999: version 1.0B is released. March 2001: version 1.1 is released Where Did the Name Come From? Herald Blatant “Bluetooth II ”–King of Denmark 940-981 AC. Noted for unifying Denmark and Sweden.
Background image of page 4
5 Applications User benefits Multiple device access (phone, music) Cordless phone benefits Hands free operation Conference Table Cordless Computer Business Card Exchange Instant Postcard Computer Speakerphone Cordless headset
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6 Bluetooth Profiles Generic Access Service Discovery Cordless Telephone Intercom Serial Port Headset Dial-up Networking Fax LAN Access Generic Object Exchange Object Push File Transfer Synchronization
Background image of page 6
7 Technical Overview
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8 Design considerations high bandwidth conserve battery power cost < $10 Data signal x(t) Recovered data signal Goal: cost power spectrum Noise, interference
Background image of page 8
9 EM Spectrum ISM band ν LF HF VHF UHF SHF EHF MF AM radio UV S/W radio FM radio TV cellular ν 1 MHz 1 kHz 1 GHz 1 THz 1 PHz 1 EHz infrared visible X rays Gamma rays 902 – 928 MHz 2.4 – 2.4835 GHz 5.725 – 5.785 GHz ISM band λ 30kHz 300kHz 3MHz 30MHz 300MHz 30GHz 300GHz 10km 1km 100m 10m 1m 10cm 1cm 100mm 3GHz ISM band
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
10 Unlicensed Radio Spectrum 902 Mhz 928 Mhz 26 Mhz 83.5 Mhz 125 Mhz 2.4 Ghz 2.4835 Ghz 5.725 Ghz 5.785 Ghz cordless phones, baby monitors, Wireless LANs 802.11 Cell.
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 97

4_BT_ - 4b. Bluetooth Communications 1. Introduction 2....

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online