• About
  • Connected Vehicle
  • Architecture
  • Approach
  • Viewpoints
  • Security
• Applications
• Views
  • Enterprise
  • Functional
  • Physical
  • Communications
• Standards
  • CV Standards
  • CV Standards Plan
• Resources
  • Databases
  • Diagrams
  • Documents
  • Presentations
  • Tools
  • Training
• Glossary
  • Acronyms
• Contact Us

location and time Quintuple

Bidirectional?: False

location and time (A-Interconnect): This CVRIA application interconnect encapsulates all of the Layer 2 information flows between the 'RSE Position Correction Support' application object and the 'Field Location and Time Data Source' physical object. In this case, there is only a single Layer 2 flow associated with this interconnect, so the Layer 1 application interconnect name and the Layer 2 information flow name are both 'location and time'. This application interconnect is uni-directional since the underlying layer 2 information flows go from 'Field Location and Time Data Source' to 'Roadside Equipment'.

Field Location and Time Data Source (Source Physical Object): The 'Field Location and Time Data Source' provides accurate position information for field devices such as Roadside Equipment (RSE). While a Global Positioning System (GPS) Receiver is the most common implementation, this physical object represents any technology that provides a position fix in three dimensions and time with sufficient accuracy.

Roadside Equipment (Destination Physical Object): 'Roadside Equipment' (RSE) represents the Connected Vehicle roadside devices that are used to send messages to, and receive messages from, nearby vehicles using Dedicated Short Range Communications (DSRC) or other alternative wireless communications technologies. Communications with adjacent field equipment and back office centers that monitor and control the RSE are also supported. This device operates from a fixed position and may be permanently deployed or a portable device that is located temporarily in the vicinity of a traffic incident, road construction, or a special event. It includes a processor, data storage, and communications capabilities that support secure communications with passing vehicles, other field equipment, and centers.

RSE Position Correction Support (Destination Application Object): "RSE Position Correction Support" broadcasts differential positioning data to enable precise locations to be determined by passing vehicles, supporting Connected Vehicle applications that require highly accurate positioning. The differential positioning data may be calculated directly by a precisely located RSE that is operating as a reference station or received from an external reference station and relayed to passing vehicles.