1. Vehicular Communication and Optimal Cooperative Positioning
Asghar
Tabatabaei Balaei
University of New South Wales

2. What is cooperative positioning? How does DSRC help?
Outline
DSRC
How does GNSS work?
Why is GNSS not enough?
What is cooperative positioning?
How does DSRC help?
Effect of network parameters on positioning performance
Precise position and reliable Communication

3. Dedicated Short Range Communication (DSRC)
High-speed, short-range, low-latency wireless communications between vehicles
IEEE p standard for wireless access in vehicular environments
Rapid connection establishment and network acquisition
System Components
onboard units (OBU)
Road side units (RSU)

4. At least four satellites with atomic clocks Global coverage
How does GNSS work?
Multilateration
TOA
At least four satellites with atomic clocks
Global coverage
Unlimited number of users
GNSS Signal
Environmental noise

5. Why is GNSS not enough?
GPS
RF Interference

6. Cooperative Positioning

7. Localization Block How dose DSRC help? On Board DSRC Unit Memory
Monte Carlo/Particle Filter Estimator
Ranging & GPS Block
Memory
Adhoc Information Communication Block
Computation Unit

8. How Dose DSRC help?

9. Effect of network parameters on positioning performance

10. Precise position and reliable Communication

11. Summary
Cooperative Positioning is needed to improve the positioning accuracy in the vehicular environment
Communication constraints affect the level of accuracy that we can get from cooperative positioning