2. C3PO & VGrid

The current project C3PO builds on  the previous project VGrid. 


Project Summary

In addition to low cost and robust wireless communication devices, vehicles can also be equipped with storage, processing, and sensing capability. An ad hoc network of such vehicles can provide a number of important networking, computing, and sensing primitives.
First, using local storage, each vehicle can act as a store-and-forward mobile router and an ad hoc network of vehicles can form an intelligent transit network. Second, using the local processing capability, an ad hoc network of vehicles can form an on-demand and dynamic grid computing engine. Third, with the sensing capability, the vehicles can together function as a distributed mobile sensor network. In this research project, we consider the application of robust traffic state estimation and distributed traffic management using a hybrid network consisting of roadside sensor infrastructure and cooperative ad hoc computing formed by invehicle sensors equipped with networking, processing, and storage capability.

In this NSF funded project, we will utilize the sensing and computation capabilities of vehicles and the grid computing engine to develop robust estimation and control algorithms for distributed traffic management. Through simulation and analysis we will investigate the effectiveness of these schemes to smooth vehicular traffic flows with the goal to reduce accidents, minimize congestion delays and maximize throughput. We will also investigate the required degree of penetration to make such a system effective.

As part of this research, we will develop the software architecture, the networking protocols, and the resource management algorithms to create the grid computing engine, VGrid, and integrate it with the roadside sensor infrastructure. New challenges arise due
to the dynamic nature of the ad hoc grid computer as both the topology and the node membership change with time. We will develop an integrated simulation tool that has both a realistic vehicular mobility model and communication/networking layers that capture the dynamics of wireless channels. Using this simulation tool, we will investigate the performance characteristics of a hybrid sensing-computing-control system, and identify design and modeling issues to improve the performance of such a system


Fred Liu
Kartik Pandit
Behrooz Khorashadi
Collin Smith
Haning Du
J. LeBrun
Andrew Chen
Joey Anda
Chen-Nee Chuah
Michael Zhang
Dipak Ghosal


  1. Bojin Liu. Dipak Ghosal, Chen-Nee Chuah, H. Michael Zhang, "Reducing Greenhouse Effects via Fuel Consumption-Aware Variable Speed Limit (FC-VSL), " IEEE Transactions on Vehicular Technology, 2012. 
  2. Bojin Liu. Dipak Ghosal, Chen-Nee Chuah, H. Michael Zhang, "Analysis of the Information Storage Capability of VANET for Highway and City Traffic," Transportation Research Part C, Special Issue on Data Management in Vehicular Networks, 2012. 
  3. Behrooz Khorashadi, Dipak Ghosal, Chen-Nee Chuah, Michael Zhang,  "Distributed Automated Incident Detection with VGrid," IEEE Wireless Communications, vol. 18, Issue 1, pp. 64-73, 2010.
  4. Bojin Liu, Behrooz Khorashadi, Dipak Ghosal, Chen-Nee Chuah, Michael Zhang  "Assessing the VANET’s Local Information Storage Capability under Different Traffic Mobility," The 29th Conference on Computer Communications, IEEE INFOCOM Mini Conference, San Diego, CA, March 2010.
  5. Behrooz Khorashadi, Bojin Liu, Haining Du, Dipak Ghosal, Chen-Nee Chuah, and Michael Zhang  "Smoothing Vehicular Traffic Flow with VGrid," Transportation Research Board 2010 Annual Meeting, January 2010
  6. Bojin Liu, Behrooz Khorashadi, Haining Du, Chen-Nee Chuah, Michael Zhang, Dipak Ghosal  "VGSim: An Integrated Networking and Microscopic Vehicular Mobility Simulation Platform," IEEE Communications Magazine Volume 47 Issue 5, May 2009.
  7. C-N. Chuah, H. Du, D. Ghosal, B. Khorashadi, B. Liu, C. Smith, and H. M. Zhang, "Distributed Vehicular Traffic Control and Safety Applications with VGrid," IEEE Wireless Hive Networks Conference, Austin, TX, August, 2008.
  8. H. Du, M. Zhang, C-N. Chuah, and D. Ghosal, " A Finer Resolution Cellular Automata Model for Inter-Vehicle Communication Applications," Transportation Research Board 2008 Annual Meeting, pp 13, January 2008.
  9. Behrooz Khorashadi, Andrew Chen, Chen-Nee Chuah, Dipak Ghosal, Michael Zhang  "Impact of Transmission Power on the Performance of TCP in Vehicular Ad Hoc Networks," 2007 Fourth Annual Conference on Wireless on Demand Network Systems and Services (WONS '07), 24-26 Jan. 2007, Austria.
  10. Andrew Chen, B. Khorashadi, Chen-Nee Chuah, Dipak Ghosal, Michael Zhang "Smoothing Vehicular Traffic Flow using Vehicular-based Ad Hoc Networking & Computing Grid (VGrid)" in IEEE Intelligent Transportation Systems Conference, 2006 (ITSC '06), pp. 349-354, Toronto, Ontario, 17-20, September 2006.
  11. B. Khorashadi, Andrew Chen, Chen-Nee Chuah, Dipak Ghosal, Michael Zhang "Impact of Transmission Power on the Performance of UDP in Vehicular Ad Hoc Networks" Proceedings of IEEE International Conference on Communications, ICC 2007, Glasgow, Scotland, 24-28 June 2007.
  12. B. Khorashadi, Xin Liu, Dipak Ghosal, "Determining the Peer Resource Contributions in a P2P Contract," 2nd Int. Workshop HOT-P2P 2005, July 2005
  13. J. Anda, J. LeBrun, D. Ghosal, C-N. Chuah, and H. M. Zhang, "VGrid: Vehicular Ad Hoc Networking and Computing Grid for Intelligent Traffic Control," IEEE Vehicular Technology Conference, May/June 2005.

Thesis and Dissertations