NTCIP OPTIMIZED FOR WIRELESS COMMUNICATIONS

The increasing availability of wireless communications has presented agencies with a potentially more cost effective means of communicating with intersection controllers versus the use of standard wired techniques. Inherent latencies and business models for deployment of wireless communications require that the communications with intersection controllers be managed in a manner different from the techniques used for connection to the controllers over standard wired techniques. An analysis of the amount of actual useful data typically transmitted vs. the total amount of data transmitted reveals that for a typical system, where once-per-second status monitoring is desired, approximately 92% of the transmissions result in no new data about the intersection, or expressed differently, only 8% of the transmissions are being used for useful data (which also includes significant overhead). This is very inefficient use of the available bandwidth and becomes even more critical where the bandwidth must be shared or has a cost associated with the number of bytes transmitted/received. This paper describes an approach that utilizes the trap capabilities defined in NTCIP 1103 along with some extensions to the trap mechanism; the extensions to the standard proposed allow the agency to control the amount of data sent over the wireless networks on an intersection-by-intersection basis while still meeting their varying needs for real-time monitoring and control. These extensions also support such enhanced concepts as backup control centers and peer-to-peer communications.

• Supplemental Notes:
  • Full conference proceedings are available on CD-ROM.
• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Patton, K M
  • Rausch, B
• Conference:
  • At the Crossroads: Integrating Mobility Safety and Security. ITS America 2004, 14th Annual Meeting and Exposition
  • Location: San Antonio, Texas
  • Date: 2004-4-26 to 2004-4-28
• Publication Date: 2004

Language

• English

Media Info

• Pagination: 13p

Subject/Index Terms

• TRT Terms: Communication systems; Computer programs; Cost effectiveness; Data collection; Intersection elements; Monitoring; Optimization; Real time information; Traffic control; Transmission lines; Wireless communication systems
• Subject Areas: Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00976089
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 8 2004 12:00AM