CS6304 Analog and Digital Communication

1. CS6304 Analog and Digital Communication

2. Bluetooth Technology

3. Bluetooth is a global, RF-based 2.4 GHz short-range,
connectivity solution for portable, personal devices
it is not just a radio, it is an end-to-end solution
The Bluetooth spec comprises
a HW & SW protocol specification
IEEE 802.15.1 is working on standardizing the PHY
and MAC layers in Bluetooth
More Info:
http://www.bluetooth.org
http://ieee802.org/15/pub/TG1.html

4. Introduction
• What is Bluetooth?
• Why is it useful?
• Governing Standard – Large Consortium

5. History
• 1998 - Bluetooth technology is officially introduced and the BLUETOOTH
• 1999 - Bluetooth 1.0 Specification is introduced.
• 2003 - The BLUETOOTH Version 2.1.
• 2004 - Bluetooth Version 2.0 + EDR (Enhanced Data Rate) is introduced.
• 2007 - Bluetooth Core Specification Version 2.1 + EDR is adopted by the
BLUETOOTH.
• 2009 - Bluetooth Core Specification Version 3.0 + HS (High Speed).

6. How it works?
• Short range wireless connectivity.
• Low power consumption
• Automatic recognition.

7. September 11, 2001 Ian Gifford <giffordi@ieee.org>
7
Data Access Points
Source: Jim Kardach, Intel, [MobileDemo.ppt] 8Jun00 IEEE ComSoc http://grouper.ieee.org/groups/802/15/pub/2000/Jul00/00184r0P802-15_TG1-Bluetooth_IEEE-ComSoc-Pitch-8Jun00.ppt

8. September 11, 2001 Ian Gifford <giffordi@ieee.org>
8
Cable Replacement
Source: Jim Kardach, Intel, [MobileDemo.ppt] 8Jun00 IEEE ComSoc http://grouper.ieee.org/groups/802/15/pub/2000/Jul00/00184r0P802-15_TG1-Bluetooth_IEEE-ComSoc-Pitch-8Jun00.ppt

9. September 11, 2001 Ian Gifford <giffordi@ieee.org>
9
Ad hoc Networking
Source: Jim Kardach, Intel, [MobileDemo.ppt] 8Jun00 IEEE ComSoc http://grouper.ieee.org/groups/802/15/pub/2000/Jul00/00184r0P802-15_TG1-Bluetooth_IEEE-ComSoc-Pitch-8Jun00.ppt

10. September 11, 2001 Ian Gifford <giffordi@ieee.org>
10
Bluetooth RF Specifications
Specified for low cost, single chip implementation
 Noise margin is low
 near-far problem
 low-cost low IF
 integrated VCO
 2.4GHz
Sensitivity traded for low cost integration capability

11. September 11, 2001 Ian Gifford <giffordi@ieee.org>
11
M
M
SS
S
S
P
sb
sb
P
P
The Bluetooth network topology
 Radio designation
 Connected radios can be master or slave
 Radios are symmetric (same radio can be
master or slave)
 Piconet
 Master can connect to 7 simultaneous.
 Each piconet has maximum capacity (1
MSps)
 Unique ID
 Scatternet
 Piconets can coexist in time and space

12. September 11, 2001 Ian Gifford <giffordi@ieee.org>
12
Inter-connected Piconets - The
Scatternet
 Complex
slave
master
master/slave
Printer
Laptop
Laptop
Mouse
Mobile Phone
Headset
LAN
Access Point
Source: Kris Fleming 20Mar01 [Bluetooth-BOF-at-50th-IETF-PAN-Talk.ppt]

13. September 11, 2001 Ian Gifford <giffordi@ieee.org>
13
Application Framework
and Support
Link Manager and L2CAP
Radio & Baseband
Host Controller
Interface
RF
Baseband
Audio
Link Manager
L2CAP
Other TCS RFCOMM
Data
The Bluetooth protocols
 A hardware/software description
 An application framework
SDP
Applications

14. Privacy/Security & Reliability
• Very Important.
• Don’t want data to be shared.
• Security.
– Pairing security.
– Reliability

15. Support of Community

16. Devices
• Laptops
• Gaming Consoles
• Headsets
• Cell Phones
• Printers

17. Ease of Use
• Very easy to use.
• Connection is fast and simple.
• More devices are Bluetooth capable.

18. Future
• Diverse applications with Bluetooth.
• Faster transfer rate.