We have a small number of openings in the Systems and Networking group for  Post-docs and Researchers . Candidates should hold a PhD, or expect to complete their PhD shortly, and should have a track record of publication in the leading conferences or journals. Further details can be found on the Cambridge Lab web page. On-line application tool.

We have opportunities for strong mid-term PhD candidates available throughout the year - please click on the link for detailed information. I am personally interested in taking on interns outside the summer - please email me directly on this.

My research interests include Distributed Control, Application Performance, Quality of Service and Stochastic Networks. Information on Systems and Networking in Cambridge can be found here.

• Horizon: Balancing TCP over Multiple Paths in Wireless Mesh Networks, Božidar Radunovic, Christos Gkantsidis, Dinan Gunawardena, Peter Key, Mobicom 2008, San Francisco, September 2008.
• Control of communication networks: welfare maximization and multipath transfers, Peter Key and Laurent Massoulié, Philosophical Transactions of the Royal Society A, Volume 366, Issue 1872, June 13, 2008.  Published PDF  HTML  local PDF pre-print.  Royal Society Discussion Meeting Journal Link.
• Non-metric coordinates for predicting network proximity Peter Key and Laurent Massoulié (Thomson, Paris) and Dan-Cristian Tomozei (Ecole Polytechnique, Paris), INFOCOM 08, Minisymposium, Phoenix, April 2008.
•  An Optimization Framework for Opportunistic Multipath Routing in Wireless Mesh Networks,Božidar Radunovic, Christos Gkantsidis, Peter Key, Pablo Rodriguez (Telefonica), INFOCOM 08, Minisymposium, Phoenix, April 2008.
• Dynamic decentralized multi-channel MAC protocols, H. Seferoglu (UC Irvine) , A. Lakshmikantha (UIUC), A. Ganesh (University of Bristol), and Peter Key ITA 08, Information Theory and Applications, , January 2008, UCSD.
• Multipath Code Casting for Wireless Mesh Networks, Christos Gkantsidis, Wenjun Hu, Peter Key, Bozidar Radunovic, Pablo Rodriguez,and Steluta Gheorghiu, ACM CoNEXT 2007, New York, December 2007. http://www.sigcomm.org/co-next2007/
• An Optimization Framework for Practical Multipath Routing in Wireless Mesh, Bozidar Radunovic, Christos Gkantsidis, Peter Key, Pablo Rodriguez (Telefonica Research), and Wenjun Hu (Cambridge Computer Lab), Microsoft Research Technical Report MSR-TR-2007-81, June 2007. PDF
• Path selection and multipath congestion control
Peter Key, Laurent Massoulié and Don Towsley, IEEE Infocom, Alaska, May 2007.
• Multipath routing, congestion control and dynamic load balancing, Peter Key, Laurent Massoulié and Don Towsley, ICASSP, 32nd IEEE International Conference on Acoustics, Speech, and Signal Processing, Hawaii, April 2007.
• Fluid models of integrated traffic and multipath routing, Peter Key and Laurent Massoulié, Queueing Systems, 53(1), 85–98, June 2006.
• Performance analysis of contention based Medium Access Control protocols, Ayalvadi Ganesh, Gaurav Sharma and Peter Key. IEEE Infocom, Barcelona, April 2006
• Efficient quarantining of scanning worms: optimal detection and coordination, A. Ganesh, D. Gunawardena, P. Key, L. Massoulié, and J. Scott, IEEE Infocom, Barcelona, April 2006
• Combining multipath routing and congestion control for robustness, Peter Key and Laurent Massoulié, CISS 2006, 40th Conference on Information Sciences and Systems, Princeton, March 2006, IEEE.
• Schedulable regions and equilibrium cost for multipath flow control: the benefits of coordination, Laurent Massoulié and Peter Key, CISS 2006, 40th Conference on Information Sciences and Systems, Princeton, March 2006, IEEE.
• Congestion Notification and Probing Mechanisms for Endpoint Admission Control, A.J. Ganesh, P.B. Key, D. Polis and R. Srikant, IEEE/ACM Transactions on Networking, Vol 14 No 3, 568--578, June 2006
• Combined Multipath Routing and Congestion Control:  a Robust Internet Architecture, Peter Key, Laurent Massoulié and Don Towsley, MSR Technical Report MSR-TR-2005-111, August 2005
• Fluid Limits and Diffusion Approximations for Integrated Traffic Models with Laurent Massoulié, Microsoft Research Technical Report, MSR-TR-2005-83, June 2005. Under submission.
• Resource allocation with persistent and transient flows, with Supratim Deb and Ayalvadi Ganesh
,PDF IEEE/ACM Transactions on Networking, Vol 13, No 2, April 2005. An earlier version of this paper appeared as an MSR Technical Report TR_ID=MSR-TR-2001-114
• Farsighted Users Harness Network Time-Diversity, with Laurent Massoulié and Milan Vojnovic, IEEE Infocom, March 2005. PDF
• Fair Internet traffic integration: network flow models and analysis, Peter Key, Laurent Massoulié, Alan Bain and Frank Kelly, Annals of Telecommunication, November/December 2004, vol 59, 11-12, pp. 1338-1352
• Emulating Low-priority Transport at the Application Layer: A Background Transfer Service Peter Key, Laurent Massoulié and Bing Wang, Proceedings of ACM SIGMETRICS (SIGMETRICS 2004), New York City, June, 2004. PDF
• PIC: Practical Internet Coordinates for Distance Estimation, Manuel Costa, Miguel Castro, Antony Rowstron, and Peter Key, ICDCS, Tokyo, Japan, March 2004. PDF, ps
• Network Aware Applications: A Background Transfer Service, Peter Key, Laurent Massoulié and Bing Wang, Forty-First Allerton Conference on Communication, Control, and Computing, Allerton, October 2003
• Network characteristics: modelling, measurements and admission control, PDF, Dinan Gunarwardena, Peter Key and Laurent Massoulié, IWQoS 2003, Monterey, June 2003.
• A network flow model for mixtures of file transfers and streaming traffic, Peter Key, Laurent Massoulié, Alan Bain and Frank Kelly.
  Preprint: Microsoft Research Technical Report, MSR-TR-2003-37. PDF   Final version to appear in ITC 18, Berlin, 2003.
• Probing strategies for distributed admission control in large and small scale systems, Peter Key and Laurent Massoulié. PDF(proceedings version) , Postscript,IEEE Infocom, San Francisco 2003).
• Service-Differentiation for Delay-Sensitive Applications: An Optimisation-Based Approach, with Laurent Massoulié and Jonathan Shapiro, Proceedings of IFIP Performance 2002 conference, Rome September 2002.  Final version in Performance Evaluation, 2002, Vol 49, pp 471-489.  see also short version. 
• Modelling the Performance of In-Call Probing for Multi-Level Adaptive Applications, with Alan Bain (Stats Lab, Cambridge), Microsoft Research Technical Report, MSR-TR-2002-06, Jan 2002, PDF , Postscript
• Feedback and bandwidth sharing in networks, A. J Ganesh, P. B.  Key and L. Massoulié. To appear in Proc. 39th Annual Allerton Conference on Communication, Control and Computing, 2001.
• Modelling the Performance of Distributed Admission Control for Adaptive Applications, with Alan Bain, Statistical Laboratory Cambridge, ACM Sigmetrics Performance Evaluation Review, Vol 29 no 3, December 2001, ACM portal,
  MAMA workshop version, June 2001, Postscript
• Modeling RED with Idealized TCP Sources, P. Kuusela, P. Lassila, J. Virtamo and P. Key, in Proceedings of IFIP ATM & IP 2001, pp. 155-166, 2001, Budapest, Hungary, PDF,  (bib)
• Properties of the Virtual Queue Marking Algorithm, with Richard Gibbens (Computer Laboratory Cambridge), and Stephen Turner (Statistical Laboratory, Cambridge), 7th UK Teletraffic Symposium, Dublin, May 2001, IEE Publications, PDF
• Distributed control and resource marking using best-effort routers, with Richard Gibbens (Computer Laboratory, Cambridge), IEEE Network, Vol 15 no 3, May 2001, pp 54-59, PDF
• Resource Pricing for Differentiated Services  KiVS 2001, February 2001, Springer
• Distributed Control and Resource Pricing: Tutorial given jointly with Richard Gibbens (Statistical Laboratory, Cambridge) at Sigcomm 2000
• An ECN-based end-to-end congestion-control framework: experiments and evaluation, Koenraad Laevens, Peter Key and Derek McAuley, Microsoft Research Technical Report, MSR-TR-2000-104, October 2000, Postscript (593KB), PDF (159 KB)
• End-User Policies for Predicting Congestion Patterns in Data Networks (with Laurent Massoulie and Koenraad Laevens), ITC specialists seminar, Monterey 2000).
• Distributed Admission Control, with Frank Kelly (Statistical Laboratory, Cambridge) and Stan Zachary (Heriot-Watt University) December 2000, IEEE Journal on Selected Areas in Communications, vol. 18, no. 12, December 2000, 2617-2628
• User policies in a network implementing congestion pricing with Laurent Massoulie, Workshop on Internet Service Quality Economics (ISQE) , December 1999
• The use of games to assess user strategies for differential Quality of Service in the Internet, with Richard Gibbens (Statistical Laboratory, Cambridge), Workshop on Internet Service Quality Economics (ISQE) , Dec. 1999
• Service Differentiation: Congestion Pricing, Brokers and Bandwidth Futures, NOSSDAV99 Word (66KB) PDF(21KB)
• Differential QoS and Pricing in Networks: where flow-control meets game theory, with Derek McAuley,  IEE Proceedings Software, Vol 146, No 2, March 1999.
• Congestion Pricing for Congestion Avoidance, with Derek McAuley, Paul Barham, Koenraad Laevens, Microsoft Research Technical Report MSR-TR-99-15, Feb 1999.