Research Scientist,
College Of Computing,
Georgia Institute of Technology,
Atlanta, GA. 30332-0280
Home: 955 Juniper St Unit 3317,
Atlanta, GA 30309
Phone: (404) 964 9591
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Rajnish Kumar, Ph.D. Research Scientist, College Of Computing, Georgia Institute of Technology, Atlanta, GA. 30332-0280 Home: 955 Juniper St Unit 3317, Atlanta, GA 30309 Phone: (404) 964 9591
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Systems and architectural support for wireless sensors networking, mobile multimedia and distributed systems.
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| Scalable Video Conferencing: This project explores the research issues involved in scaling video conferencing to hundreds of simultaneous participants. As the number of participants increase, traditional approach of broadcasting all streams requires high amount of computation and networking resources. We take the simple approach of fusing input video streams into a single collage and transporting the collage back to different participants. How to generate collage in real-time while maintaining a bounded end-to-end delay is the focus of this research. | |
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Priority-aware Situation Awareness (ASAP): While Moore's law has held true for predicting the growth of processing power, the volume of data that applications are called upon to handle is growing similarly, if not faster. The enormous amount of sensing data continually generated for real-time analysis coupled with the inherent dynamism and computationally demanding nature, make situation awareness a challenging CPS domain for networked systems. To face this challenge, we propose to transition from the sense-fuse-actuate characterization of these applications to a new sense-prioritize-fuse-actuate characterization. Adding the prioritize step will help not only in an effective use of the available resources, but also in providing real-time guarantees in the presence of data deluge. Developing an integrated fusion and prioritization architecture for situation awareness is the focus of this ongoing research.
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| Distributed fusion support (DFuse): DFuse is an architectural framework for dynamic application-specified data fusion in sensor networks. It bridges an important abstraction gap for developing advanced fusion applications that takes into account the dynamic nature of applications and sensor networks. Elements of the DFuse architecture include a fusion API, a distributed role assignment algorithm that dynamically adapts the placement of the application task graph on the network, and an abstraction migration facility that aids such dynamic role assignment. Experimental evaluations show that the API has low overhead, and simulation results show that the role assignment algorithm significantly increases the network lifetime over static placement. This project is in its mature stage, and our current focus here is now to integrate fusion with prioritization algorithms as part of the ASAP project. | |
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Mobile Virtual Sensors: A Scalable Programming and Execution Framework for Smart Surveillance,
Rajnish Kumar, Junsuk Shin, Liviu Iftode and Umakishore Ramachandran In the proceedings of The Fifth Workshop on Embedded Networked Sensors, June 2008. |
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ASAP: A Camera Sensor Network for Situation Awareness,
Junsuk Shin, Rajnish Kumar, Dushmanta Mohapatra, Umakishore Ramachandran, and Mostafa Ammar In the proceedings of The 11th International Conference On Principles of Distribyted Systems (OPODIS'07), December 2007. |
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RF2ID: A Reliable Middleware Framework for RFID Deployment,
Nova Ahmed, Rajnish Kumar, Robert Steven French, and Umakishore Ramachandran In the proceedings of The 21st IEEE International Parallel & Distributed Processing Symposium (IPDPS), March 2007. |
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Systems Support for Cross-layering in Protocol Stack,
Rajnish Kumar, Santashil PalChaudhuri, Charles Reiss and Umakishore Ramachandran In the proceedings of The 2nd International Conference on Mobile Ad-hoc and Sensor Networks (MSN 2006). |
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On Improving Wireless Broadcast Reliability of Sensor Networks Using Erasure Codes,
Rajnish Kumar, Arnab Paul, Umakishore Ramachandran and David Kotz In the proceedings of The 2nd International Conference on Mobile Ad-hoc and Sensor Networks (MSN 2006). |
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Dynamic Data Fusion For Future Sensor Networks,
Umakishore Ramachandran, Rajnish Kumar, Matthews Wolenetz, Brian Cooper, Bikash Agarwalla, Junsuk Shin, Phil Hutto, and Arnab Paul In The ACM Transactions on Sensor Networks, To appear, August 2006 issue. |
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LAWN: A lightweight authentication protocol for wireless networks,
Arnab Paul, Rajnish Kumar, Umakishore Ramachandran In Proceedings of the 4th IEEE International Conference on Network Computing Applications (NCA 05), July 2005 |
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A Simulation-Based Study of Wireless Sensor Network Middleware,
Matthew Wolenetz, Rajnish Kumar, Junsuk Shin, Umakishore Ramachandran In International journal on network management (IJNM), special issue on sensor networks, 2005 |
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Fountain Broadcast for Wireless Networks,
Rajnish Kumar, Arnab Paul, and Umakishore Ramachandran In Proceedings of Second International Workshop on Networked Sensing Systems (INSS 2005) |
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Design of Adaptive Overlays for Multi-scale Communication in Sensor Networks,
Santashil PalChaudhuri et.al. In Proceedings of IEEE DCOSS 2005 |
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Middleware Guidelines for Future Sensor Networks,
PDF Matthew Wolenetz, Rajnish Kumar, JunSuk Shin, and Umakishore Ramachandran, BASENETS 2004, October 2004 |
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DFuse: A Framework for Distributed Data Fusion,
PDF Rajnish Kumar, Matthews Wolenetz, Bikash Agarwalla, Junsuk Shin, Phil Hutto, and Umakishore Ramachandran, In Proceedings of ACM SenSys 2003, Los Angeles,CA. |
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Selecting Devices for Aggregation,
PDF Rajnish Kumar, Vahe Poladian, Ira Greenberg, Alan Messer, and Dejan Milojicic, In Proceedings of WMCSA 2003, Monterey, CA. |
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Iterative Adaptation for Mobile Clients Using Existing APIs,
PDF Eyal de Lara, Yogesh Chopra, Rajnish Kumar, Nilesh Vaghela, Dan S. Wallach, and Willy Zwaenepoel, To appear in IEEE Transactions on Parallel and Distributed Systems (TPDS). |
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Collaboration and Multimedia Authoring on Mobile Devices ,
PDF Eyal de Lara, Rajnish Kumar, Dan S. Wallach, and Willy Zwaenepoel, In Proceedings of first International Conference on Mobile Systems, Applications, and Services (MobiSys), May 2003, San Francisco, CA. |
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Collaboration and Document Editing on Bandwidth-Limited Devices,
PDF Eyal de Lara, Rajnish Kumar, Dan S. Wallach, and Willy Zwaenepoel, In Proceedings of the Workshop on Application Models and Programming Tools for Ubiquitous Computing(UbiTools'01). Atlanta, Georgia. September, 2001 |
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| Complete publication list |
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| May 2003 - Aug 2006 : | PhD, College of Computing, Georgia Institute of Technology, Atlanta, GA. |
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| August 2000 - May 2003 : | Rice University, Houston, TX Major : Computer Science, Degree : Master of Science, Advisor : Prof. Willy Zwaenepoel |
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| June 1999 - June 2000 : | Oracle India Development Center , Bangalore, India. | |
| July 1995 - May 1999 : | Indian Institute of Technology, Kharagpur, India, Major : Computer Science and Engineering, Degree : Bachelor of Technology |
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| Past - May 1995 : | Jawahar Navodaya Vidyalaya , Supaul (Bihar), India. Gyan Sarovar School, Saharsa (Bihar), India |
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Wireless Technology Forum
Dogwood Toastmasters (Atlanta) Atlanta Toastmasters TiE Atlanta Technology Association of Georgia |