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Carlos Pereira

Successive Interference Cancellation in Vehicular Networks to Relieve the Negative Impact of the Hidden Node Problem. Carlos Pereira. Outline. Problem Statement Idea Evaluation metrics Results Conclusions. Problem Statement. Hidden Node Amount of packet collisions increases for:

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Carlos Pereira

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  1. Successive Interference Cancellation in Vehicular Networks to Relieve the Negative Impact of the Hidden Node Problem Carlos Pereira

  2. Outline • Problem Statement • Idea • Evaluation metrics • Results • Conclusions

  3. Problem Statement • Hidden Node • Amount of packet collisions increases for: • Increasing Vehicle density • Increasing Transmitted Power • Increasing of Packet Size • Increasing of Beaconing rate Unsynchronized transmissions Packet Collisions Increasingofload

  4. Idea: Recoverpacketsfromcollisionsusing SIC • Objective • Feasibility/Benefit Study • Requirements • Characterization/Evaluation of packet collision

  5. Evaluation metrics • Reception and Drop Probabilities • Probability of being involved in a collision • Number of packets overlapping • Energy distribution of colliding packets • Probability of Recovery through SIC

  6. Results • Packet drop probability • 60 Veh/km; 4 Lanes; TxPower = 20; Packet Size = 500 Bytes; Beacon Rate = 6Hz

  7. Results • Packet drop probability • Reasons for Drop in StartRx(60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate = 6Hz)

  8. Results • Packet drop probability • Reasons for Drop in EndPreamble(60 Veh/km; 4 Lanes;TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate =6Hz)

  9. Results • Packet drop probability • Reasons for Drop in EndHeader(60 Veh/km; 4 Lanes;TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate =6Hz)

  10. Results • Packet drop probability • Reasons for Drop in EndRx(60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate =6Hz)

  11. Results • Packet drop probability • Variationof Beacon rate (60 Veh/km; 4 Lanes; TxPower = 20 dB; Packet Size = 300 Bytes)

  12. Results • Packet drop probability • Variationof Beacon rate in StartRx(60 Veh/km; 4 Lanes; TxPower = 20 dB; Packet Size = 300 Bytes)

  13. Results • Packet drop probability • Variationof Beacon rate in EndPreamble(60 Veh/km; 4 Lanes; TxPower = 20 dB; Packet Size = 300 Bytes)

  14. Results • Packet drop probability • Variationof Beacon rate in EndRx(60 Veh/km; 4 Lanes; TxPower = 20 dB; Packet Size = 300 Bytes)

  15. Results • Packet drop probability • VariationofPacketSize(60 Veh/km; 4 Lanes; TxPower = 20 dB; Beacon Rate = 6Hz)

  16. Results • Packet drop probability • VariationofPacketSize in StartRx(60 Veh/km; 4 Lanes; TxPower = 20 dB; Beacon Rate = 6Hz)

  17. Results • Packet drop probability • VariationofPacketSize in EndPreamble(60 Veh/km; 4 Lanes; TxPower = 20 dB; Beacon Rate = 6Hz)

  18. Results • Packet drop probability • VariationofPacketSize in EndRx(60 Veh/km; 4 Lanes; TxPower = 20 dB; Beacon Rate = 6Hz)

  19. Results • Packet drop probability • VariationofVehicleDensity(4 Lanes; TxPower = 20 dB; Packet Size = 500 Bytes; Beacon Rate = 6Hz)

  20. Results • Packet drop probability • VariationofVehicleDensityin StartRx(4 Lanes; TxPower = 20 dB; Packet Size = 500 Bytes; Beacon Rate = 6Hz)

  21. Results • Packet drop probability • VariationofVehicleDensityin EndPreamble(4 Lanes; TxPower = 20 dB; Packet Size = 500 Bytes; Beacon Rate = 6Hz)

  22. Results • Packet drop probability • VariationofVehicleDensityin EndRx(4 Lanes; TxPower = 20 dB; Packet Size = 500 Bytes; Beacon Rate = 6Hz)

  23. Results • Packet drop probability • VariationofTxPower(60 Veh/km; 4 Lanes; Packet Size = 500 Bytes; Beacon Rate =6Hz)

  24. Results • Packet drop probability • VariationofTxPower in StartRx(60 Veh/km; 4 Lanes; Packet Size = 500 Bytes; Beacon Rate =6Hz)

  25. Results • Packet drop probability • VariationofTxPower in EndPreamble(60 Veh/km; 4 Lanes; Packet Size = 500 Bytes; Beacon Rate =6Hz)

  26. Results • Packet drop probability • VariationofTxPower in EndRx(60 Veh/km; 4 Lanes; Packet Size = 500 Bytes; Beacon Rate =6Hz)

  27. Results • Probability of being involved in a collision

  28. Results • Probability of being involved in a collision

  29. Results • Number of packets overlapping • Average

  30. Results • Number of packets overlapping • Average

  31. Results • Number of packets overlapping • Histogram (60 Veh/km; 4 Lanes; Packet Size = 500 Bytes; Beacon Rate = 2 Hz)

  32. Results • Number of packets overlapping • Histogram (60 Veh/km; 4 Lanes; Packet Size = 500 Bytes; Beacon Rate = 6 Hz)

  33. Results • Number of packets overlapping • Histogram (60 Veh/km; 4 Lanes; Packet Size = 500 Bytes; Beacon Rate = 10 Hz)

  34. Results • Energy distribution of colliding packets • Histogram for 1 Interferer (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate = 2 Hz)

  35. Results • Energy distribution of colliding packets • Histogram for 1 Interferer (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate = 6 Hz)

  36. Results • Energy distribution of colliding packets • Histogram for 1 Interferer (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate = 10 Hz)

  37. Results • Energy distribution of colliding packets • Histogram for 3 Interferers (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate = 2Hz)

  38. Results • Energy distribution of colliding packets • Histogram for 3 Interferers (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate = 6 Hz)

  39. Results • Energy distribution of colliding packets • Histogram for 3 Interferers (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate = 10 Hz)

  40. Results • Energy distribution of colliding packets • Histogram for 5 Interferers (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate = 6 Hz)

  41. Results • Energy distribution of colliding packets • Histogram for 5 Interferers (60 Veh/km; 4 Lanes; TxPower = 20dB; Packet Size = 500 Bytes; Beacon Rate = 10 Hz)

  42. Conclusions Our feeling… Benefit Load 6 Mbps

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