1. 1
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
Realistic Mobility & Channel
Models integration in OMNeT++
Final Project Presentation
371-10-03
Naaman Sittsamer
Elad Gross
6.6.2010
Presented By: Instructor:
Dr. Chen Avin

2. 2
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Background
 Project Goal
 Related Work
 Mobility Models
 Channel Model
 Results
 Conclusions
 Future Work
 References

3. 3
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Motivation: lack of inter-vehicular communication.
 Vehicular Ad-Hoc Networks (VANET) uses:
• Safety
• Traffic
• Commercial
 VANET types:
• Vehicle-to-Vehicle
• Vehicle-to-Roadside

4. 4
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 VANET Special Features:
• Very fast stations
• Real-life movement patterns
• Different geographical environments
• Sufficient energy
• Safety deadlines
 Developing VANET’s devices and protocols requires
a realistic simulator !

5. 5
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 To develop and integrate a VANET simulator, for
simulating Mobilicom’s dedicated hardware.
 Emphasis will be given to design and implementation
of channel and mobility models, with multi
environments support.
 The simulator is a generic tool for examining
algorithms and protocols of VANETs.

6. 6
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Some groups are already studying VANETs.
 Most groups generate a suitable simulator to their
research.
 The mobility models varies from Random-Way-Point
(RWP) to traced movements.
 The affect of the mobility model on the channel is
controversial.
 Usually, the channel model in the simulator is
homogenous.

7. 7
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Simulation tool: OMNeT++
• Open source
• Easy for new models programming
• Familiar to us
 Wireless project: MiXiM
• Detailed physical layer
 Device target: “Mobilicom” modem
• Requirements document affects the design

8. 8
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 The designed simulator is unique in its ability to
incorporate urban and country-side environments
 3 different environments :
• Urban
• Sub-Urban
• Open Space
 Main affected variants:
• Mobility: speed
• Channel: attenuation

9. 9
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Example 1:
Legend:
Urban
Sub Urban
Open Space

10. 10
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Example 2:
Legend:
Urban
Sub Urban
Open Space

11. 11
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 System overview:
Car
Local
Mobility
Mobility
Manager
Physical
module
Connection
Manager
Examined
algorithm
Environments
Database

12. 12
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Accelerated Random-Way-Point (ARWP)
• car generates random target and speed and moves
towards it.
• car movement is bounded by topology parameters.
• speed increases/decreases/remains at each step.
• after reaching the target, the car stops for a
random time, and chooses another target…

13. 13
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Accelerated RWP demonstration:
Demonstration
Legend:
Urban
Sub Urban
Open Space

14. 14
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Traci
• Integration of traffic simulator and network
simulator.
Demonstration
SUMO

15. 15
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Traci
• TCP communication between the simulators
• Real maps are used:
Updates positions
Demonstration
SUMOOMNeT++
TCP Client TCP Server

16. 16
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Frame reception process: Transmitted
power
Channel Access
Path-loss
attenuation
Shadowing
attenuation
SINR
calculation
BER/SINR
tables
s
Accept Drop

17. 17
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Hata models for path-loss (reflections)
• .
 Correlated Log-Normal Shadowing (obstacles)
• .
• Correlation:
 As ∆time is smaller → higher correlation.
 As |speed| is smaller → higher correlation.
),|,|,( stdmeanspeedtimefnAttenuatio dB ∆=
)( heightsantennasfrequency,distance,fnAttenuatio dB =

18. 18
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Final attenuation:
dBdBdB
idB
idB
ShadowingPathLossnAttenuatio
ShMaxShadowing
PLSumPathLoss
+=
=
=
}{
}{
1,1 ShPL
2,2 ShPL

19. 19
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 RSSI vs. Distance:

20. 20
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 Throughput vs. Hosts no.
Open
Urban
Sub-Urban
Mixed

21. 21
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 We designed a simulator for future study of VANET.
 Useful for examinations of algorithms and protocols
from layer 2 to application layer.
 Different mobility patterns or channel model can be
integrated within the simulator.

22. 22
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
 More tests on physical channel are required.
 Check Hata model carefully. It may not fit to high
frequencies (~5GHz).
 Examine simulator scalability
 Verification of calculated RSSI with real devices

23. 23
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬

24. 24
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
‫רבה‬ ‫תודה‬
Thanks

25. 25
‫חידושים‬ ‫סיכום‬ ‫ותוצאות‬ ‫ניסוי‬ ‫ודירוג‬ ‫חיפוש‬ ‫תוכן‬ ‫המרת‬ ‫הפרויקט‬ ‫מטרת‬ ‫הקדמה‬
References
• OMNeT simulator website: http://www.omnetpp.org/
• TRACI. http://sourceforge.net/apps/mediawiki/sumo/?title=TraCI
• SUMO Simulation of Urban MObility, http://sumo.sourceforge.net/
• Saha A. K. and Johnson D. B., "Modeling mobility for vehicular ad hoc networks", in Proc. of the ACM
Workshop on Vehicular Ad hoc Networks (VANET), (2004)
• Hafeez KA, Zhao L, Liao Z, BNW Ma, “The Optimal Radio Propagation Model in VANET”, Fourth
International Conference on Systems and Networks Communications (2009).
• Sommer C, Dressler F. "Progressing toward realistic mobility models in VANET simulations". IEEE
Communications Magazine, (2008).
• Sommer C., Yao Z., German R., and Dressler F., "On the Need for Bidirectional Coupling of Road Traffic
Microsimulation and Network Simulation", in 9th ACM International Symposium on Mobile Ad Hoc
Networking and Computing (ACM Mobihoc 2008). Hong Kong, China: ACM, May (2008).
• A. Köpke, M. Swigulski, K. Wessel, D. Willkomm, P. T. K. Haneveld, T. Parker, O. Visser, H. S. Lichte,
and S. Valentin. Simulating wireless and mobile networks in OMNeT++: The MiXiM vision. In Proc. Intl.
Workshop on OMNeT++ (co-located with SIMUTools ’08), Mar. 2008.
• K. Wessel, M. Swigulski, A. Köpke, and D. Willkomm. MiXiM - the physical layer: An architecture
overview. In Proceeding of the 2. International Workshop on OMNeT++, Rome, Italy, Mar. 2009.
• Mobilicom Ltd, http://mobilicom.com
• http://www.youtube.com/watch?v=MGWpjn7ORmI