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A reliable broadcast routing scheme based on mobility prediction for VANET

A reliable broadcast routing scheme based on mobility prediction for VANET. Peiyuan Lai, Xinhong Wang, Ning Lu, Fuqiang Liu Broadband Wireless Communication and Multimedia Laboratory, Tongji University, Shanghai, China IEEE Intelligent Vehicles Symposium(IVS), 2009. Outline. Introduction

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A reliable broadcast routing scheme based on mobility prediction for VANET

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  1. A reliable broadcast routing scheme based on mobility prediction for VANET Peiyuan Lai, Xinhong Wang, Ning Lu, Fuqiang Liu Broadband Wireless Communication and Multimedia Laboratory, Tongji University, Shanghai, China IEEE Intelligent Vehicles Symposium(IVS), 2009 I-Hsin Liu

  2. Outline Introduction RB-MP Protocol Simulation Conclusion

  3. Introduction • Vehicular Ad hoc NETworks (VANETs) are expected to support some applications. • traffic alert dissemination • file sharing

  4. Introduction Analyzes of traditional routing protocols for Mobile Ad hoc NETworks (MANETs) demonstrated that their performance is poor in VANETs. The main problem with these protocols in VANETs environments is their route instability.

  5. Introduction • The traditional route is established a fixed succession of nodes between the source and destination. • the routes leads to frequent broken routes in the presence of VANETs’ high mobility.

  6. Introduction • Many packets are dropped. • The overhead due to route repairs or failure notifications increases. • low delivery ratios • high transmission delays

  7. Goal Proposed a reliable broadcast routing scheme based on mobility prediction (RB-MP) to achieve an efficient multi-hop broadcast. This scheme selects the reliable and efficient rebroadcast nodes, according to the prediction holding time provided by position and relative velocity.

  8. Goal To make the broadcast communication as reliable as possible. To enhance bandwidth efficiency.

  9. Assumption Each vehicles equipped with a GPS and a wireless communication device.

  10. RB-MP Protocol Nodei R Nodej <ID, previousPosition, currentPosition,Speed>

  11. RB-MP Protocol Previous position Current position Nodei D0 D R Nodej

  12. RB-MP Protocol Previous position Current position Nodei D0 D R Nodej

  13. RB-MP Protocol Previous position Current position Nodei D0 D Nodej return 1, if D-D0>0 return -1, if D-D0<0

  14. RB-MP Protocol E D A A C B return 1, if D-D0>0 return -1, if D-D0<0 If PHT-PUP(position updating period) > 0 Select the biggest PHT to rebrodcast. Else select the fastest node to rebrodcast.

  15. Simulation

  16. Simulation

  17. Simulation

  18. Simulation

  19. Simulation

  20. Conclusion In this paper, we have presented a new efficient multi-hop broadcast scheme RB-MP for VANET. In particular, it is showed that RB-MP is more reliable and efficient than UMB in high mobility situation.

  21. Thank You

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