Welcome to Home page of Vishal Kumar Singh

I was a research staff in CS at Columbia University, My advisor is Prof. Henning Schulzrinne.

In the recent past, I was doing research in the area application management(failure and performance) for end user applications and applications deployed in cloud environment. For more details on end user application diagnosis, Please visit Dyswis (paper) and also see QoEScope (which determines cause of quality of experience deterioration in real time conferencing application. I also investigated use of virtualization for scalability and reliability of VoIP and issues related to it.

In the past, I worked on SIP/SIMPLE based presence technology. More details can be found at Presence Project Page. We developed benchmarking standard for presence server called as SIMPLEstone, scalability architecture for presence deployment, presence traffic optimization techniques and applied presence in different application(SABIT) scenarios.

Publications

Conference Papers

Min Ding, Vishal Singh, Yueping Zhang, and Guofei Jiang, "Application Dependency Discovery Using Matrix Factorization," IEEE/ACM IWQoS (short paper), June 2012.

Zhenyu Wu, Yueping Zhang, Vishal Singh, Guofei Jiang, and Haining Wang, "NetDEO: Automating Network Design, Evolution, and Optimization," IEEE/ACM IWQoS, June 2012.

Devdutt Patnaik, Ashish Bijlani and Vishal Singh, "Towards High-Availability for Enterprise IP Telephony using Virtual Machines", IMSAA 2010, Bangalore, India, Dec 2010.

Y Gu, G. Jiang, Vishal Singh, Yueping Zhang, "Optimal Probing for Unicast Network Delay Tomography",INFOCOM 2010, San Diego, CA, March 2010.

Yueping Zhang, Vishal Singh, Yu Gu, and Guofei Jiang, "Adaptive IP Service Management for Large-Scale Heterogeneous Networks", in proceedings in IWQoS 2009.

Vishal Kumar Singh, Henning Schulzrinne and Piotr Boni,"A New SIP Event Package For Group Membership Management in Advanced Communications",(awarded as 3rd best paper) in proceedings of IMSAA 2008, Bangalore, India.

Vishal Kumar Singh, Henning Schulzrinne and Kai Miao, "DYSWIS: An Architecture for Automated Network Diagnosis", in proceedings of IEEE/IFIF NOMS’2008, Salvadore, Brazil.

Vishal K. Singh, Henning Schulzrinne, Piotr Boni, Boris Elman and David Kenneson, "Presence Aware Location-Based Service For Managing Mobile Communications", IEEE’s CCNC, Jan 2007.

Kai X. Miao, Henning Schulzrinne, Vishal Kumar Singh and Qianni Deng, "Distributed Self Fault-Diagnosis for SIP Multimedia Applications", IFIP/IEEE Management of Multimedia and Mobile Networks and Services, Oct 2007.

Shruti L. Gandhi, Vishal K. Singh, Henning Schulzrinne, "Analyzing User Behavior in Instant Messaging", Annual Conference of ITA (Information Technology Alliance), 2007.

J Shiva Shankar, Vishal Kumar Singh, Damodar P., "SNMP Over SIP - The future of Network Management", IEEE/IFIP Network Operations and Management Symposium, April 2004, Seoul, Korea.

Vishal Kumar Singh, Shiva Shankar J and Damodar P., "Distributed Agent Architecture for IP telephony availability", Technical Report, 2004.

US Patents

US 7,733,769 Method and apparatus for identifying a media path in a network. http://assignments.uspto.gov/assignments/q?db=pat&pat=7733769

US 7,525,952 Method and apparatus for determining the source of user-perceived voice quality degradation in a network telephony environment. http://assignments.uspto.gov/assignments/q?db=pat&pat=7525952

US 8,031,628 Optimal probing for unicast network delay tomography.

8031628, OPTIMAL PROBING FOR UNICAST NETWORK DELAY TOMOGRAPHY http://assignments.uspto.gov/assignments/q?db=pat&pub=20100118715

8443080, SYSTEM AND METHOD FOR DETERMINING APPLICATION DEPENDENCY PATHS IN A DATA CENTER http://assignments.uspto.gov/assignments/q?db=pat&pat=8443080

SYSTEMS AND METHODS FOR APPLICATION DEPENDENCY DISCOVERY (in the process of assignment) http://assignments.uspto.gov/assignments/q?db=pat&pub=20120191843

Data Processing: US 20140064066 A1 http://www.google.com/patents/US20140064066

Network Management US 9253042 B2 http://www.google.com/patents/US9253042

Network Self-Protection US 20130176852 A1 https://www.google.com/patents/US20130176852

Policy-Aware Based Method for Deployment of Enterprise Virtual Tenant Networks, US 20130185438 A1 https://www.google.com/patents/US20130185438

Patents Pending

METHOD FOR ENABLING A WIRELESS CLIENT TO LOCATE OTHER WIRELESS CLIENTS", 2007. Patent pending (PCT/US2007/022188).

DERIVED PRESENCE-AWARE SERVICE FROM ASSOCIATED ENTITIES. Patent pending (US 2008/0016100 A1)

Communicating network management information using session initiation protocol architecture. Patent pending (US 20060123103) http://assignments.uspto.gov/assignments/q?db=pat&pub=20060123103

OFSense: Light-Weight Networking Sensing With OpenFlow http://assignments.uspto.gov/assignments/q?db=pat&pub=20130185419

FlowSense: Light-Weight Networking Sensing With OpenFlow http://assignments.uspto.gov/assignments/q?db=pat&pub=20130191530

Technical Reports

Vishal Kumar Singh, Henning Schulzrinne, Markus Isomaki and Piotr Boni, "Presence Traffic Optimization Techniques", Columbia University Technical Report CUCS-041-06, New York, NY, Nov 2006.

Vishal Kumar Singh and Henning Schulzrinne, "A Survey of Security Issues and Solutions in presence", Columbia University Technical Report CUCS-019-06, New York, NY, Feb 2006.

Vishal Kumar Singh and Henning Schulzrinne, "SIMPLEStone – A Presence Server Benchmarking Standard", Columbia University Technical Report CUCS-023-06, New York, NY, Feb 2006.

Vishal Kumar Singh and Henning Schulzrinne, "Presence Server Scalability Architectures".