Dipak Ghosal - Research Page

Research Interest

My primary interests are in the areas of high-speed and wireless networks with particular emphasis on the impact of these new technologies on the network and higher layer protocols and applications. Building on the past extensive experience in protocol and architectural issues of the existing telephone network, I currently interested in routing and security issues in IP Telephony. I am  interested in P2P networks with particular emphasis on incentives for resource contributions. I am also interested in mobile ad hoc and sensor networks, particularly, in challenges in and applications  of vehicular ad hoc networks. Finally, I am interested in the protocols and architectural issues in next generation wireless and cellular networks. 

Current and Past Research Projects

• VGrid: A Vehicular Ad Hoc Grid Computing (NSF)
• End-System Optimization for High-Speed Data Transfer (Pending)
• VoIP and Related Security Research
• Transport Protocols for Genome-to-Life Applications (Los Alamos National Labs/UCD Completed)
• Security Issues in IP Telephony (NSF Completed)
• Mobile Ad Hoc Networks for Facilities Protection (SANDIA National Lab Completed)
• Faculty Early Career Development (CAREER) Grant (NSF Completed) 
• Pseudo-Serving to Complement Internet Web-Caching (NSF Completed) 

• A. Banerjee, D. Ghosal, and B. Mukherjee, Modeling and Analysis to Estimate the End-System Performance Bottleneck Rate for High-Speed Data Transfer, Fifth International Workshop on Protocols for Fast Long-Distance Networks (PFLDNet) 2007, Los Angeles. [pdf]
• B. Khorashadi, A. P. Chen, C. –Nee Chuah, D. Ghosal,  Impact of power on the performance of TCP in vehicular ad hoc networks, Invited Paper, Fourth Annual Conference on Wireless On demand Network Systems and Services, January 24-26, 2007, Obergurgl, Austria. [pdf]
• J. Yick,  G. Pasternack, B. Mukherjee, and D. Ghosal, Placement of network services in a wireless sensor network, to appear in the  International Journal of Wireless and Mobile Computing, 2007. [pdf]
• A. Banerjee, W. Feng, B. Mukherjee, and D. Ghosal, RAPID: An End-System Aware Protocol for Intelligent Data-Transfer over Lambda-Grids, in the Proceedings of the IEEE/ACM International Parallel and Distributed Processing Symposium (IPDPS 2006), Rhode Island, Greece, April 2006. [pdf]
• A. P. Chen, B. Khorashadi, C.-Nee Chuah, D. Ghosal, and H. M.  Zhang, Smoothing Vehicular Traffic Flow using Vehicular-based Ad Hoc Networking & Computing Grid (VGrid), IEEE ITSC 2006, September 17-20, 20006, Toronto, Canada. [pdf]
• S. Narayan, J. Pandya, P. Mohapatra, and D. Ghosal, Analysis of Windowing and Peering Schemes for Cache Coherency in Mobile Devices, International Conference on Networking, Waterloo Canada, May 2005. [pdf]
• S. Mueller and D. Ghosal,  Analysis of a Distributed Algorithm to Determine Multiple Routes with Path Diversity in Ad Hoc Networks, 3rd Intl. Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2005, Riva del Garda, Trentino, Italy, April 3 - 7, 2005. [pdf]
• V. Pandey, D. Ghosal, and B. Mukherjee, Exploiting User Profiles to Support Differentiated Services in Next-Generation Wireless Networks. IEEE Network Magazine, September 2004. [pdf]
• W. Wen, B. Mukherjee, S.-H. Gary Chan, D Ghosal, LVMSR: an efficient algorithm to multicast layered video, Computer Networks 41 (2003), 363–383. [pdf]
• X.-yan Fang and D. Ghosal, Performance Modeling and QoS Evaluation of MAC/RLC Layer in GSM/GPRS Networks, ICC 2003 General Conference - Networking, May 2003. [pdf]
• K. Kong and D. Ghosal, Mitigating Server-Side Congestion in the Internet Through Pseudoserving, IEEE/ACM Transactions on Networking, August, 1999. [pdf]
   

Current Research Group 

• Jennifer Yick (PhD) - (Co-advisor: Biswanath Mukherjee) Research topic: Sensor networks 
• Amitabha Banerjee (PhD) - (Co-advisor: Biswanath Mukherjee) Research Topic: Access Networks and End-System Optimization.
• Vijoy Pandey (Phd) - (Co-advisor: Biswanath Mukherjee) Research Topic: Enabling architectures for supporting differentiated services in next generation wireless cellular networks
• Behrooz Khorashadi (PhD) - Research Topic: Challenges and applications in VGrid over Vehicular Ad Hoc Networks.
• Andrei Dragos (PhD) - (Co-advisor: Biswanath Mukherjee) Research Topic: Network Scheduling in Next Generations Circuit Oriented Networks.
• Yali Liu (PhD) - (Co-advisor: Biswanath Mukherjee) Research Topic: Application of signal processing techniques in network data analysis.
• Xiaoling Qui (PhD) - (Co-advisor: Biswanath Mukherjee) Research Topic: Wireless broadband access networks.
• Viswanath Ramamurthy (PhD) - (Co-advisor: Biswanath Mukherjee) Research Topic: MIMO

Visitors

• Prof Deshi Li () Research Topic - Sensor Networks
• Dr. Sandhya Narayan (Visiting Researcher) - Analysis of  Ad Hoc Peer-to-Peer Communication in Caching in Wireless Devices.

Other Information

Dipak Ghosal       Networks Lab

Dipak Ghosal 
Department of Computer Science
University of California, Davis, CA 95616
Phone: (530) 754-9251
Fax : (530) 752-4767
E-mail: ghosal@cs.ucdavis.edu  dghosal@ucdavis.edu