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Download Communications and Data Flow Within the FHWA VII Network
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Transcript
VII System Architecture Overview June 2006 VII System Architecture The VII System consists of multiple Sub-systems developed by both Public and Private Entities that will ultimately enable functionality for public and private Services VII Vehicle End Users OBE VII Network Infrastructure VII RSE Management Layer Network Application Application Layer Application Service Network Layer Vehicle Interface To Vehicle Distributed Management Agent Management Agent Local Application Services Layer VII SDN & NAP Communications Service DSRC Interface DSRC Network ApplicationSupporting Services DSRC Interface Network Interface VII Network End Users VII ENOC Public Service Point Private Service Point Centralized Management & Security Systems Public Services Applications Private Services Applications Service Delivery Node (SDN) application-supporting network services Application Support Services Network Access Point (NAP) access control, routing and data transport Backhaul Roadside Network Infrastructure -- Signal Controllers Other RSEs -- Sensor Systems -- Transaction Processors WAN (Backbone) Network Access Network (TDM, Metro Ethernet, IP Network) Other VII NAPs USCG DGPS Service Certificate Authority 1 VII System Services Probe Data Distribution Distribute vehicle generated probe data to subscribing network users Advisory Message Distribution Distribute geographically-focused advisory messages to passing vehicles Map Element Distribution Distribute local intersection and road section maps to passing vehicles is support of safety applications. Position Correction Distribution Distribute position correction information to passing vehicles in support of safety applications. Roadside Infrastructure Support – Interface with signal controllers for distribution of signal phase and timing information to passing vehicles in support of safety applications. – Interface with roadside sensors to forward information to network user or to distribute advisory messages to passing vehicles. – Interface with roadside transaction processing systems. Communications Transportation of data between a vehicle and a network user, optionally supporting preservation of communication session as vehicle move between RSEs. RSE Information Lookup Provide RSE information, such as location or current service offerings to network users. Management Monitoring, configuration and control using network management systems and services. Security Provides for managed security controls and mechanisms. Positioning Utilizes multiple sources to develop accurate vehicle positioning System Time Utilizes GPS (Stratum-1) timing source for system components facilitating synchronization. 2 VII System Architecture A more detailed view of the Sub-Systems. VII Vehicle End Users VII Network Infrastructure OBE Application Layer VII RSE OBE Remote Services Application VII Service Delivery Node (SDN) & Network Access Point (NAP) OBE Local Application Position Correction Generator Network Layer Communications HMI Vehicle I/F OBE Vehicle Interfaces HD Systems SOC Systems OBE DSRC RSE DSRC DSRC Network Map Element Generator CSIRC Systems Local System Interface Network Gateway RSE (Backhaul) Gateway Backhaul Network Roadside Infrastructure Other RSEs -- Signal Controllers -- Sensor Systems -- Transaction Processors Probe Data Integrator Private Service Point Private Services Applications Public Services Applications Probe Data Integrator Buffer/ Proxy ENS Broker RSE Application Supporting Services IP Session Dispatcher Public Service Point NOC Systems Local NMS Agent RSE Information Lookup Agent OSGI Crypto VII ENOC Management Layer RSE Management Positioning Services Layer VII Network End Users VII SDN Gateway VII NAP Application Server Message Delivery Agent Access Gateway Network Interface WAN (Backbone) Gateway Dispatch ESB Application Server Network Interface Access Network (TDM, Metro Ethernet, IP Network) WAN (Backbone) Network Other VII NAPs USCG DGPS Service Certificate Authority 3 Contact Information James Marousek Booz | Allen | Hamilton 13200 Woodland Park Dr. Herndon, VA 20171 (703) 984-0324 Office (703) 969-6047 Mobile [email protected] 4
