I was a Sr. Research Engineer in the Metropolitan Wireless Group of Nokia-Siemens-Networks Strategy and Development in Mountain View, CA. I was working on Mobile Networking involving mesh networks, ad hoc networks, sensor networks, at the MAC and IP/routing layers. I used to work on Mobile IPv6, Context Transfers, QoS issues, header compression and optimization issues in general. I went to school at University of California, Los Angeles, where I got a MS ('95) and a PhD ('00) from the EE Department, and prior to UCLA, to Ecole Centrale Paris where I received another MS ('95). My dissertation was about optimization in networks of heterogeneous customers. I was a visiting researcher at Stanford, in the EES&OR department (now MS&E) between 1997 and 2000 (host: Nicholas Bambos), a visiting scholar in the CSAIL lab at MIT in the Fall of 2003 (host: Hari Balakrishnan), a visiting scholar in the EECS dept at UC, Berkeley in the Fall of 2004 (host: Venkat Anantharam) and a visiting professor at Keio University (host: Jun Murai) in the Winter'06-Spring'07.

Journal Papers:

• Andres Arjona, Cedric Westphal, Jukka Manner, Antti Yla-Jaaski, Sami Takala, Can the Current Generation of Wireless Mesh Networks Compete with Cellular Voice?, accepted to Elsevier Computer Communications journal, 2008.

Conference Papers:

2008

• Liaoruo Wang, Benyuan Liu, Dennis Goeckel, Don Towsley, Cedric Westphal, Connectivity in Cooperative Wireless Ad Hoc Networks, in Proc. of ACM MobiHoc 2008, Hong-Kong, May 2008 (acceptance rate 14.7%)
• Cedric Westphal, Karim Seada, Charles Perkins, Ryuji Wakikawa, Adaptive Path Accumulation for Reactive Routing Protocols in MANETs, in Proc. of IEEE MASS 2008, Atlanta, September 2008 (acceptance rate 13%).
• Cedric Westphal, James Kempf,, A Compact Routing Architecture for Mobility, to appear in ACM SIGCOMM'08 Workshop MobiArch'08, August 2008, Seattle.
• Cedric Westphal, Charles Perkins, Ryuji Wakikawa, Route Hitting Probability for a Class of Ad Hoc Routing Protocols, in Proc. of SPASWIN 2008, Berlin, April 2008.
• Andres Arjona, Cedric Westphal, Antti Yla-Jaaski, Martin Kristensson, Towards High Quality VoIP in 3G Networks: An Empirical Study, in Proc. of AICT'08, Athens, June 2008. Best Paper Award.
• Cedric Westphal, Karim Seada, Charles Perkins, Ryuji Wakikawa, A Study of the Route Discovery Process in Reactive MANETs, NSN Technical Report, currently under review.
• Cedric Westphal, Yali Wang, Charles Perkins, Ryuji Wakikawa, Reactive Routing in Ad Hoc Networks With No Flooding, NSN Technical Report, currently under review.

  2007

• Cedric Westphal, Little Tom Thumb Went Straight Home, in Proc. of IEEE INFOCOM 2007, Anchorage, May 2007 (acceptance rate 18%).
• Andres Arjona, Cedric Westphal, Sami Takala, , Empirical Analysis of the Single-Radio Mesh Architecture: Performance, Limitations and Challenges, in Proc. of ACM IWCMC'07.
• Liaoruo Wang, Benyuan Liu, Dennis Goeckel, Don Towsley, Cedric Westphal, Connectivity with Noncoherent Cooperation in Extended Wireless Networks, in the first workshop of ITA, September 2007.
• Cedric Westphal, Properties of Opportunistic and Collaborative Ad Hoc Networks, in Proc. of IEEE Globecom'07, DC, November 2007.
• Karim Seada, Cedric Westphal, Charles Perkins, Analyzing Path Accumulation for Route Discovery in Ad Hoc Networks, in Proc. of IEEE WCNC'07, Hong-Kong, March 2007.
• Cedric Westphal, Performance of Routing in Sensor Networks with a Mobile Access Point, in Proc. of IEEE WCNC'07, Hong-Kong, March 2007.

  2006

• Cedric Westphal, Opportunistic Routing in Dynamic Ad Hoc Networks: the OPRAH protocol, in Proc. of IEEE MASS'06.
• Cedric Westphal, On the Information Lifetime and the Localization Cost in Sensor Networks with Random Topologies, in Proc. IEEE SECON 2006, September 2006.
• Cedric Westphal, Randomized Channel Selection in Multichannel Access Point Networks, in Proc. of IEEE VTC Fall 2006, Montreal, Canada.
• Joy Ghosh, Cedric Westphal, Hung Ngo, Chunming Qiao, Bridging Intermittently Connected Mobile Ad hoc Networks (ICMAN) with Sociological Orbits - Poster at IEEE Infocom 2006, Barcelona.
• Cedric Westphal, Layered IP Header Compression Architecture for Multi-Hop Compression, in Proc. of IEEE ICC 2006, Istanbul, Turkey.

  2005

• Cedric Westphal, On Maximizing the Lifetime of Distributed Information in Ad Hoc Networks with Individual Constraints, in the Sixth ACM International Symposium on Mobile Ad Hoc Networking and Computing, MOBIHOC 2005, Urbana-Champaign, USA.
• Claude Richard, Charles Perkins, Cedric Westphal, Defining an Optimal Active Route Time-Out for the AODV Routing Protocol, poster submission, IEEE SECON 2005, Santa Clara, California.
• Cedric Westphal, Quantized Scheduling for Radio Networks with Heterogenous Fading Characteristics, in Proc. of the IEEE Wireless Mobility Conference (WiMOB) 2005, Montreal, Quebec.
• Cedric Westphal, On Maximizing the Lifetime of Distributed Information in Ad Hoc Networks with Individual Constraints: The Random Topology Case, in the first workshop on Spatial Stochastic Modeling of Wireless Networks (SPASWIN) 2005, Riva del Garda, Italy [Due to oversight on my part, the title of this paper is the same has the MobiHoc paper above, despite focusing on the random topology as opposed to the lattice and tree topology.]
• Cedric Westphal, Rajeev Koodli, Stateless Header Compression, in Proc. of IEEE ICC 2005, Seoul, Korea.

2004 and earlier

• Cedric Westphal, Monitoring Proportional Fairness in cdma2000 HDR Networks, in Proc. of IEEE Globecom 2004, Dallas, TX.
• Cedric Westphal, Improvements on Header Compression, in Proc. of the IEEE Globecom 2003, San Francisco, CA.
• Cedric Westphal, Rajeev Koodli, IP Header Compression: a study of context establishment, WCNC2003, New-Orleans, LA.
• Cedric Westphal, Frequency-based user dependent header compression, Globecom 2002, Taiwan.

Tutorials and Presentations:

• Cedric Westphal, Wireless Mesh Networks, half-day tutorial presented at European Wireless 2007, Paris, April 2007.
• Cedric Wespthal, Metropolitan Wireless Mesh Networks, special lecture for SOI Asia Project, Tokyo, March 2007.
• Cedric Westphal, Critical Search Diameter in Ad Hoc Networks with Individual Constraints, to be presented at INFORMS Applied Probability Society Conference, Ottawa, July 2005.
• Cedric Westphal (plus an assist from Ronald Hu, Antti Toskala, Charles Perkins and a few others), High-Speed Cellular Networks, Networking 2005, Waterloo, Canada.
• Cedric Westphal, Nick Bambos, On the Stability of Multi-Class Queueing Networks, INFORMS Applied Probablility Society Conference, NYC, July 2001.

Community Service:

• Vice General Chair, IEEE Infocom 2010, San Diego, CA.
• Publicity Chair, ACM Mobicom 2008, San Francisco, CA.
• Publicity Chair, IEEE Infocom 2008, Phoenix, AZ.
• Area Editor, Elsevier Computer Network (COMNET), since 2005.
• Co-Chair for the Tutorial Program for IEEE SECON 2004 and 2005.
• Co-Chair for Demos and Posters, IEEE SECON 2006.
• Panelist for the National Science Foundation (NSF), 2005, 2006 and 2007.
• Panelist for the European Union Framework Programme for Research and Technological Development, 2008.
• TPC Chair, Mobile and Wireless Track, IFIP Networking 2006, Coimbra, Portugal.
• Publication Chair, IEEE MASS 2006, Vancouver, Canada.
• Patronage and Sponsorship Chair, IEEE SECON 2007.
• Workshop Chair, for the 19th International Symposium on Personal, Indoor and Mobile Radio Communication, IEEE PIMRC'08.
• Member of the Technical Program Committee for: IEEE INFOCOM 2003, 2004, 2005, 2006, 2007, 2008 and 2009, for WMASH 2003, the First ACM International Workshop on Wireless Mobile Applications and Services on WLAN Hotspots, for GLOBECOM Symposium on Wireless Communications, 2003, Symposium on Ad Hoc and Sensor Networks 2006, 2007 and 2008, for IEEE ASWN 2002, 2003, 2004 and 2005, for IEEE SECON 2004, 2005, 2006, 2007 and 2008, for IEEE Conference on Mobile Ad-Hoc Sensor Systems MASS 2004, 2005, 2006 and 2007, for IEEE 62nd Semiannual Vehicular Technology Conference, VTC Fall 2005, for SPASWIN workshop on Spatial Stochastic Modeling of Wireless Networks 2005 and 2006, for the IEEE Workshop on High Performance Switching and Routing 2005, Hong-Kong, P.R. China, for the 2nd International Symposium on Wireless Communication Systems 2005 (ISWCS2005), Siena, Italy, for the RAWNET workshop on Resource Allocation in Wireless Networks 2006, for the IEEE ICDCS International Conference on Distributed Computing Systems 2006, for ACM MobiHoc 2006, for IEEE ICC 2007, 2008 and 2009, for IFIP Networking Conference 2006, 2007 and 2008, for AINTEC Asian Internet Engineering Conference 2007, for the 2nd, 3rd and 4th Broadband Wireless Access Workshop 2008, for the Social Nets 2008 Workshop.
• Reviewer for IEEE Transactions on Mobile Computing, for IEEE Transactions on Communications, for IEEE Transactions on Wireless Communications, for IEEE Networks journal, for Wireless Networks journal, for Networld+Interop Engineers Conference 2001, for ASWN 2001, the IEEE workshop on Application Services in Wireless Networks ASWN 2001, for IEEE ICC 2003, for GLOBECOM 2004, for GLOBECOM Symposium on Wireless Networks 2007, for the 1st EuroNGI Conference on Next Generation Internet Networks 2005, for ACM Mobicom 2004, 2005, and for the (Wiley) Journal of Wireless Communications and Mobile Computing.

My dissertation:

• Cedric Westphal, Stability and Scheduling in Multiclass Queueing Networks, University of California, Los Angeles, 2000.

My patents:

Due to lenghty processing times in patent offices, this list is very partial

• Cedric Westphal, A Quantized Scheduler for Multi-User Wireless Access, US Patent 7162249, Filing date: September 17, 2004. Publication date: January 9, 2007.
• Cedric Westphal, System and Method for Using a Mobile Router Tunneling Protocol to Locate Functionality in a Distributed Architecture, US Patent 7058052, Filing date: April 11, 2003. Publication date: June 6, 2006.
• Cedric Westphal, A Layered Compression Architecture for Multi-Hop Header Compression, European Patent EP1,529.391. Filing date: August 14, 2003. Publication date: May 11, 2005.
• Ove Strandberg, Martha Zimet, Cedric Westphal, Differentiated Service Network and Method of Operating a Differentiated Service Network, European Patent EP1,293,069. Filing date: June 18, 2001. Publication date: March 19, 2003.

IETF drafts:

• Cedric Westphal, Rajeev Koodli, Charles Perkins, QoS Context Relocation
• Cedric Westphal, Charles Perkins, Piggybacked Binding Updates
• Cedric Westphal, Hemant Chaskar, QoS Signaling for NSIS
• Cedric Westphal, Charles Perkins, Piggybacking study

How to reach me: see at the top

Nokia Research Center
313 Fairchild Drive
Mountain View, CA
+1 650-625-2000
cedric (dot) westphal-at-nsn (dot) com

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