1. Bluetooth: Tutorial & Simulation
COE 543
Louai Al-Awami
Graduate Assistant
Computer Engineering Department
Tuesday, June 3 , 2003

2. Outline What is Bluetooth Brief History General Specifications
Modes of Operation
Device Discovery
Network Operation
Network Simulator (NS-2)
Bluehoc

3. What is Bluetooth Open Standard for Low Power Low Cost
Short Range (Pico-cellular)
Ad-Hoc
Voice & Data
Radio Technology

4. What is Bluetooth

5. History -Initiated by Ericsson in 1994 SIG formed in 1998
(Ericsson, Intel, IBM, Toshiba and Nokia )
Now: members

6. General Specifications
Band
2.4 GHz (ISM)
Multiple Access strategy
FHSS
(79 Freq. Hops)
Clock
3.2 kHz
Duplexing
TDD
Range
10cm,10m, 100m (NLOS)
Data rate
780 kbps
Acceptance
Worldwide
Applications
Cable Replacement WLAN- AP

7. Piconets Vs. Scatternet

8. Modes of Operation Active Always listens to packets Sniff Hold
Objective: power conservation and capacity expandability
Active
Always listens to packets
Sniff
listens to packets within certain period and sleeps the rest of the time
Hold
Stops listening until period expires
Park
Keeps synch. with master on periodic basis, but not active
Standby
No participating in any connection

9. Device Discovery Standby Doing nothing Inquiry Searching Paging
Connected
Paging
Inquiry
Standby
Doing nothing
Inquiry
Searching
Paging
Request for connection
Connected
Active connection

10. Inquiry & Paging

11. Connection ACL ACL Master Slave 1 Slave 2 Slave 3 Slave 4 625 us 1 2 31 2 3 4 5 7 6
SCO
SOC
ACL
ACL

12. Bluetooth Protocol Stack

13. Network Simulator-2 (NS-2)
What is NS-2?
Open Source research oriented simulator
TCP- IP- UDP – FTP,……
Where To Get NS-2?
(Free)
What is NS-2 Target Systems?
Unix, Linux , Solaris
Window (Cygwin)

14. Network Simulator-2 (NS-2)
Components of NS-2 NS
The core of NS (C\C++)
TCL
Tools Command Language
OTCL
Object-Oriented TCL
TCLCL
links C\C++ & OTCL
NAM
Network Animator
Xgraph
Generates Statistics

15. Network Simulator-2 (NS-2)
File Structure
Define Procedures
Define nodes (type)
Define Links (Data Rate, Delay)
Define Agents (Protocols)
Define Simulation Scenario

16. BlueHoc Bluetooth Extension to NS-2 includes
Bluetooth Radio
Bluetooth Baseband
Link Manager Protocol (LMP)
Logical Link Control and Adaptation Protocol (L2CAP)
- Scatternet is implemented in BlueScat0.6.

17. Simulation

18. Useful Links http://www.bluetooth.com http://www.isi.edu/nsnam/ns