Notes
Slide Show
Outline
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V2V Safety Framework
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Main Testing Concept
  • Motivation: Collaborative System Requirements
    • Stakeholder Consensus
    • Some Minimum Performance To be Required (transmitter)


  • Scope:
    • Assess performance and reliability
      • 5.9 GHz DSRC communications
      • GPS-based  positioning
    • Diverse geographic locations
    • Environmental Conditions
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Important Subsystems To Evaluate
  • Positioning
    • Based on Global Navigation Satellite Systems (GNSS)
      • assisted by integrated sensors (vehicle bus)
        • wheel speed only in integrated vehicles
    • Relative Positioning Performance for V2V
      • absolute performance needed for V2I and performance guarantees
  • Communications
    • DSRC
      • Range and Link Quality (Power, Antenna, Line-of-Sight)
      • (Network Scalability)
  • Applications
    • Pre-competitive implementations help shape protocols
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Previous System-Level Tests (2009)
    • Absolute Positioning Performance Evaluation






    • Real-Time Kinematic (RTK) Navigation
        • More over-the-air information (pseudoranges)
        • Accuracy comparable to non-RTK transmissions for some correction-enabled receivers (WAAS)
    • Cross-channel interference Evaluation
    • Range, Power, Packet Error Rate Evaluation
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Locations 1-6: Trip Overview Totals
Approximate Totals Per Vehicle Per Group
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Open Road Communications Conditions and Metrics
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Range Statistics
(used for Communications Performance)
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Communications Performance
(Mean Packet Error Rate overall)
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Communications Performance
(Mean Packet Error Rate per environment)
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Communications Performance
(Inter-packet-gap @10Hz / overall)
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Open Road Positioning Conditions and Metrics
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Positioning Fix Availability
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Applications Performance
  • Lane classification of leading vehicles in each group.
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SG0-SG0 Target Classification
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AG1-AG1 Target Classification
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Conclusions