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VII System Architecture
Ron Heft
Nissan Technical Center North America
2
Vehicle Infrastructure
Integration2
OverviewOverview
• Where we Stand
• System architecture and components– Onboard Equipment (OBE)– Roadside Equipment (RSE)– Backside message switch
• Use case / data flow examples– Traffic probe data (V–I center)– Intersection signal violation warning (I local–V)
• Where we Stand
• System architecture and components– Onboard Equipment (OBE)– Roadside Equipment (RSE)– Backside message switch
• Use case / data flow examples– Traffic probe data (V–I center)– Intersection signal violation warning (I local–V)
3
Vehicle Infrastructure
Integration3
Where We StandWhere We Stand
• Architecture and Technology Committee– Co-Chaired by:
• George Gilhooley, Florida DOT• Ron Heft, Nissan
• Initial Architecture– Subject to change– Feasibility and Functional testing planned
• Architecture and Technology Committee– Co-Chaired by:
• George Gilhooley, Florida DOT• Ron Heft, Nissan
• Initial Architecture– Subject to change– Feasibility and Functional testing planned
4
Vehicle Infrastructure
Integration4
System PictureSystem Picture
Infrastructure Data System
DSRC Roadside
End User
DSRC Vehicle-to-Vehicle
Vehicle andRoad Data
Driver
Road Data
RSEOBE
Vehicle Side Road Side Back Side
5
Vehicle Infrastructure
Integration5
System Block DiagramSystem Block Diagram
RoadsideEquipment
OnboardEquipment Message
Switch
SubscriberSubscriberApplicationsApplications
5.9 DSRC5.9 DSRC
EndEndUserUser
DriverDriver
Vehicle Vehicle DataData
Driver Driver HMIHMI
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Vehicle Infrastructure
Integration6
DSRCDSRCAntennaAntenna
GPSGPSAntennaAntenna
HMI HMI DevicesDevices
CANCAN
ChassisChassisBodyBodyDevicesDevices
The Onboard EquipmentThe Onboard Equipment
DSRCTransceiver
VehicleServicesInterface
ApplicationProcessor
GPSReceiver
HMI DevicesInterface
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Vehicle Infrastructure
Integration7
DSRCDSRCAntennaAntenna
GPSGPSAntennaAntenna
Signal Controller Signal Controller
The Roadside Equipment The Roadside Equipment
DSRCTransceiver
BackhaulCommunications
Interface
GPSReceiver
RSUApplicationProcessor
LocalControllerInterface
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Vehicle Infrastructure
Integration8
PublicPublicSubscriberSubscriber
ApplicationsApplications
PrivatePrivateServicesServices
AIDMessage
Agent
VehicleVehicleProxyProxyServerServer
BackhaulCommunications
Interface
Backside Message SwitchBackside Message Switch
IPv6Router
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Vehicle Infrastructure
Integration9
Privacy and SecurityPrivacy and Security
• No permanent public identifier in the OBE
• Encrypted communications betweenRSE and OBE
• Licensed transmitters– Both RSE and OBE
• No message retention in the system
• Authenticated sources for all messages
• Authorized end users
• No permanent public identifier in the OBE
• Encrypted communications betweenRSE and OBE
• Licensed transmitters– Both RSE and OBE
• No message retention in the system
• Authenticated sources for all messages
• Authorized end users
10
Vehicle Infrastructure
Integration10
ExampleTraffic Probe DataExampleTraffic Probe Data
RSE
OBE
MessageSwitch
SubscriberSubscriberApplicationsApplications
5.9 DSRC5.9 DSRC
EndEndUserUserVehicle Vehicle
DataDataVehicle
CAN Bus and GPS
SAE/AASHTO DSRC Probe
Message
Application Database
User Access Application
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Vehicle Infrastructure
Integration11
RSEOBE
5.9 DSRC5.9 DSRC
DriverDriver
Vehicle Vehicle DataData
Driver Driver HMIHMI
Intersection Intersection ControllerController
SAE/AASHTOSignal Phase
MessageSignal
ControllerState
Violation Alert
ISVW RSEApplicationISVW OBE
Application
ExampleIntersection Signal Violation WarningExampleIntersection Signal Violation Warning
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Vehicle Infrastructure
Integration12
Summary Summary
• Initial architecture framework
• Meets use cases
• Flexible applications support
• Addresses security and privacy
• Low demand on backside technologies
• Initial architecture framework
• Meets use cases
• Flexible applications support
• Addresses security and privacy
• Low demand on backside technologies
RoadsideUnit
OnboardUnit
MessageSwitch
SubscriberApplications
5.9 DSRC
EndUser
Driver
Vehicle Data
Driver HMI
