Anjur S. (Krishna) Krishnakumar

Director, Networked Systems Research


We have seen time and again that technologies that become popular in the consumer market eventually make their way into the enterprise. The lag time has become shorter and shorter. I am interested in such technologies and their use in enterprise applications in novel ways.

I am also interested in various aspects of short-range wireless networking.  Topics of specific interest are quality-of-service for real-time traffic such as voice and video as well as location determination.


Researchers in my group are engaged in projects in different areas.  A sampling follows:

  • COSA implements a hybrid-cloud model where core features are provided on-premises and enhanced services are activated on-demand from the cloud. COSA is target to SME customers.
  • Browser-based SIP Phone enables any browser (Firefox, Chrome, MS IE) to act as SIP user agent and provides a JavaScript API for embedding SIP-based call control into web pages and web apps including integration with Google. Facebook and other social networking sites.
  • We have all wasted too much time in meeting hell with missing participants and meandering topics. Project Athena incorporates agendas into e-conference systems to guide meetings and make them more effective.
  • Exploration of two-dimensional codes such as QR codes for enterprise applications.
  • Augmented virtuality — exploring the novel use of game engines in business.



Some selected publications:
Exploring a new approach to supporting reliability in virtualized environments: M. Lee, A.S. Krishnakumar, P. Krishnan, N. Singh and S. Yajnik, “Hypervisor-Assisted Application Checkpointing in Virtualized Environments,” in IEEE/IFIP DSN 2011.

Self-configuring wireless telephony with data support: A.S. Krishnakumar, P. Krishnan, and S. Yajnik, “Supporting Legacy Terminals in Multi-Hop Ad-Hoc Wireless Networks,” IEEE Globecom 2008.

  • A paper on the application of Bayesian networks to location estimation: D. Madigan, W. Ju, P. Krishnan, A.S. Krishnakumar, I. Zorych, “Location Estimation in Wireless Networks: A Bayesian Approach,” in Statistica Sinica, April 2006.
  • A theoretical model to determine the limits of signal-strength based location estimation: