The Role and Design of Communication System for Automated Driving

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The Role and Design of Communication System for Automated Driving Gaurav Bansal, Yaser P. Fallah, Mohammad Fanaei, Amin Tahmasbi-Sarvestani, John B. Kenney and Matthew C. Valenti

3. Proposed System Model

1. Motivation

5. Resource Allocation Algorithm Innovative solutions for controlling power, message rate, message content are required

Wireless Communications would be quite important for getting a non line-of-sight view for the automated driving vehicles Wireless communication is quite important technology for getting a non line-of-sight view for the automated driving vehicles

Data to Be Broadcast

Communication Rate Communication Module

Communication Power

Data From Other Vehicles

Multi-Resolution Data Processing Module

Network Performance Feedback

CSAM = Cooperative Situational Awareness Message

 We propose a novel adaptive content control algorithm 

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Main Idea: – Automated car should not only transmit its GPS information (as in DSRC safety communications), • Also transmit other object information – Cars, pedestrians, potholes, signs etc.. – Notices on the map using its local sensors (camera, radar, Lidar etc.)

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 We Set-up NS3 Simulations 

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Descent-based control to determine the message size to

maintain a target CBP

4. Present Day DSRC 2. Communication for Automated Driving

Message Content

Dynamic changes in the map are represented Distance Dependent content and prioritization for important

changes on the MAP

Total Length of the Highway = 4Km Number of Cars on the road = 100 per Km Power = 500m transmission range Message Rate = 10 Hz Packet Size:  DSRC Safety Message = 350 Bytes 

Automated Driving Message = 350 + x*50 Bytes  X represents how many other objects vehicle is observing from local sensors  50 Bytes represent an estimate of object information

Channel Busy Percentage (CBP) Results Significant improvement in Information-age metrics using our content control algorithm

CBP becomes very high for Automated Driving Communication CBP is around 60%-70%. Close to optimal use of wireless channel.

Communications can play a critical role in Automated driving  Scalability of the communication system would be important  Innovative solutions (Message content, Power, Message Rate Control) would be required for designing such a system 

Communication should collaborate with other local sensors (cameras, radars etc.) in building the real-time map of the road Packet Size = 350 Bytes

6. Conclusion

Packet Size = 2350 Bytes; x = 50