Sumit Rangwala
"A mind once stretched by a new idea never regains its original dimensions."
Oliver Wendell Holmes
Research Projects
WCP and WCPCap: Congestion Control for Multi-hop Wireless Mesh Networks
WCP and WCPCap are congestion control schemes for multi-hop wireless networks with any-to-any traffic pattern. WCP is a rate-based, end-to-end distributed congestion control scheme that shares congestion status and average RTTs of flows in a neighborhood to achieve fairness through correct congestion signaling and rate clocking of all the flows in the network. In contrast, WCPCap is an explicit rate feedback scheme that estimates spare capacity in a neighborhood and apportions it fairly among flows traversing the neighborhood. WCP and WCPCap has been implemented in Qualnet while WCP has also been implemented for Linux using Click Modular Router.
Publications
Sumit Rangwala, Apoorva Jindal, Ki-Young Jang, Konstantinos Psounis and Ramesh Govindan. Understanding Congestion Control in Multi-hop Wireless Mesh Networks, in Proceedings of the ACM/IEEE International Conference on Mobile Computing and Networking (MobiCom), September 2008. [PostScript] [PDF] [PROCEEDINGS] [BibTeX]
Sumit Rangwala, Apoorva Jindal, Ki-Young Jang, Konstantinos Psounis and Ramesh Govindan. Neighborhood-centric congestion control for multi-hop wireless mesh networks, ACM/IEEE Transactions on Networking, June 2011. [PDF] [BibTeX]
Talks
Sumit Rangwala. Understanding Congestion Control in Multi-hop Wireless Mesh Networks, ACM/IEEE International Conference on Mobile Computing and Networking (MobiCom), September 2008. [PPT][PPTX] [BibTeX]
Posters
Sumit Rangwala, Apoorva Jindal, Ki-Young Jang, Konstantinos Psounis and Ramesh Govindan. Understanding Congestion Control in Multi-hop Wireless Mesh Networks, In USC Invited Workshop on Theory and Practice in Wireless Networks, USC, Los Angeles, May 2008. [PPTX] [PPT]
Software
WCP has been implemented in Qualnet as well as in Click Modular Router. Both the implementations are available here
IFRC: Interference-Aware Fair Rate Control
IFRC is a distributed congestion control scheme for wireless sensor networks. For a wireless network consisting of N nodes sending data to a single base station (many-to-one traffic pattern) over multiple hops, IFRC provides fair and efficient rate to all the flows in the network. IFRC has been implemented on Tmote Sky, a wireless sensor networks platform.
Publications
Sumit Rangwala, Ramakrishna Gummadi, Ramesh Govindan and Konstantinos Psounis. Interference-Aware Fair Rate Control in Wireless Sensor Networks, in Proceedings of ACM SIGCOMM Symposium on Network Architectures and Protocols, September 2006. [PostScript] [PDF] [PROCEEDINGS] [BibTeX]
Talks
Sumit Rangwala. Interference-Aware Fair Rate Control in Wireless Sensor Networks, SIGCOMM, September 2006. [PPT] [BibTeX]
Sumit Rangwala. Interference Aware Fair Rate Control in Wireless Sensor Networks, Center for Embedded Networked Sensors (CENS), March 2006. [BibTeX]
Software
IFRC has been implemented on Tmote and tested on 40 nodes on our testbed. Code for IFRC is available here as well as here.
Wisden: Wireless Sensor Network for Structural Health Monitoring
Wisden is a wireless sensor network based data acquisition system for structural health monitoring. Consisting of reliable data delivery, data synchronization and data compression schemes it provides support for data acquisition of vibration data up to 200Hz along 3-axes. Wisden had been deployed on a real building (which was shaken using hydraulic shakers) and a seismic test structure.
Experience gained from Wisden has resulted in Tenet, a new architecture for sensor networks. Wisden had now been developed as an application on Tenet architecture.
Publications
Ning Xu, Sumit Rangwala, Krishna Kant Chintalapudi, Deepak Ganesan, Alan Broad, Ramesh Govindan and Deborah Estrin. A Wireless Sensor Network for Structural Monitoring, in Proceedings of the ACM Conference on Embedded Networked Sensor Systems, pp. 13--24, ACM Press, November 2004. [PDF] [PROCEEDINGS] [BibTeX]
Krishna Chintalapudi, Jeongyeup Paek, Nupur Kothari, Sumit Rangwala, John Caffrey, Ramesh Govindan, Erik Johnson and Sami Masri. Monitoring Civil Structures with a Wireless Sensor Network , No. 2, in IEEE Internet Computing, pp. 26--34, March/April 2006. [HTML] [BibTeX]
Ramesh Govindan, Eddie Kohler, Deborah Estrin, Fang Bian, Krishna Chintalapudi, Om Gnawali, Sumit Rangwala, Ramakrishna Gummadi and Thanos Stathopoulos. Tenet: An Architecture for Tiered Embedded Networks, No. 7, CENS, UCLA, November 10 2005. [PDF] [BibTeX]
Talks
Sumit Rangwala. A Wireless Sensor Network for Structural Monitoring, ACM Sensys'04, Nov 2004. [PPT] [BibTeX]
Software
Code for Wisden is available here.
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Last Updated: Thu Apr 25 18:05:53 PDT 2013