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On behalf of our associate editors, the TMC steering committee, and the TMC staff, we wish you a happy and prosperous New Year! As we discussed in last month’s editorial, TMC has successfully made the transition to the OnlinePlus™ format. OnlinePlus provides big benefits for our subscribers, being 20 percent cheaper than last year’s paper-based subscription, in addition to being environmentally sound and providing convenient and ubiquitous access to all our issues. We thank you for continuing to support the Transactions and look forward to hearing from you on ways to improve its content and delivery.
In the coming year, in addition to continuing to publish top-quality archival material, we plan to bring you selected outstanding papers from highly selective conferences such as DySPAN, MobiCom, and MobiSys in special sections of upcoming issues. We hope, with this endeavor, to try to expose our readership to a nice balance between definitive research in various subfields of mobile computing and cutting-edge research on impactful problems of relatively immediate importance.
Over the past year, our Editorial Board has performed outstanding and tireless service on behalf of the mobile computing community, and for this we thank them. The Board continues to evolve, and we take this opportunity to welcome several new Associate Editors: Raouf Boutaba, Augustin Chaintreau, Romit Roy Choudhury, Sneha Kasera, Li Erran Li, Archan Misra, Michael J. Neely, Cristina Nita-Rotaru, Injong Rhee, Vikram Srinivasan, Ravi Sundaram, Kun Tan, and Steve Weber. They collectively strengthen our expertise in cellular systems, disruption tolerant networking, mobile computing systems, wireless security, wireless network optimization, game theory, cognitive radios, and information theory. We are excited to have them on board and thank them for agreeing to serve.
Finally, we'd like to also acknowledge several Associate Editors whose terms recently expired: Tracy Camp, Martin Haenggi, David Kotz, T.V. Lakshman, Mingyan Liu, Sanjay Shakkottai, Rajeev Shorey, Tajana Simunic-Rosing, Andras Valko, and Yongguang Zhang. Their incredible service over these few years has contributed greatly to increasing the journal’s quality and reputation, and they will be missed! We wish them the best in their future endeavors.
Ramesh Govindan, Editor-in-Chief
Ram Ramanathan, Associate Editor-in-Chief

Raouf Boutaba is a professor of computer science at the University of Waterloo. He held visiting professor positions at the University of Toronto (Canada), the University of Pierre et Marie Curie, the University of Versailles, ENST - Paris, Paris 13, and Paris 5 (France), and POSTECH (Korea). He served as a distinguished speaker of the IEEE Communications Society and the IEEE Computer Society. He is the chairman of the Technical Committee on Autonomic Communications and served as the chair of the IEEE Communications Society Technical Committee on Information Infrastructure. He is a past chair of the IFIP Working Group on Networks and Distributed Systems Management, past director of the Conference Publications Board, past director of the Related Societies Board, and past director of the standards board of the IEEE Communications Society. He is the founding Editor-in-Chief of the IEEE Transactions on Network and Service Management (2007-2010), on the advisory editorial board of the Journal of Network and Systems Management, and on the editorial boards of the KICS/IEEE Journal of Communications and Networks and the Journal on Internet Services and Applications. He also served in the past as an editor for several other journals such as Computer Networks and guest edited special issues for several journals including three issues of the IEEE Journal on Selected Areas in Communications. He served as the general or program chair for a number of IEEE and IFIP conferences including ICC, GlobeCom, NOMS, Networking, CCNC, and others. His research interests include network, resource, and service management in wired and wireless networks. He has published extensively in these areas and received several journal and conference Best Paper Awards such as the IEEE 2008 Fred W. Ellersick Prize Paper Award, the 2001 KICS/IEEE Journal on Communications and Networks Best Paper Award, the IM 2007 and 2009 Conference Best Paper Awards, and the CNSM 2010 Best Paper Award, among others. He also received several other recognitions such as Premier's Research Excellence Award, two industry research excellence awards, and a fellowship of the Faculty of Mathematics, a David R. Cheriton faculty fellowship, and an outstanding performance award from the University of Waterloo. He also received the IEEE Communications Society Hal Sobol Award and the IFIP Silver Core in 2007, the IEEE Communications Society Joe LociCero award, and the IFIP/IEEE Dan Stokesbury award in 2009.

Augustin Chaintreau studied at INRIA and Ecole Normale Superieure in Paris where he graduated in 2006. During his PhD studies, he worked at Intel Research and IBM as a research intern. He has been an assistant professor in the Computer Science Department of Columbia University since fall 2010, where he works on the analysis of social networks and performance of networking algorithms. Prior to joining Columbia, he worked as member of the technical staff in the Thomson Paris Research Lab (now called Technicolor), where he initiated research combining experiments and theoretical analysis of mobile networks taking advantage of local links created by physical proximity. He supervised a team leading to eight articles in highly competitive conferences—receiving the Best Paper Award at ACM SIGMETRICS and ACM SIGCOMM CoNEXT, as well as a second rank in the ACM Student Research Competition Grand Final—and five patent applications. He served on the program committees of ACM SIGCOMM, ACM SIGMETRICS, ACM MobiCom, ACM MobiHoc, IEEE INFOCOM, and IEEE ISIT and is an area editor for the ACM SIGCOMM Computer Communication Review and recently became area editor for ACM SIGMOBILE MC2R.

Romit Roy Choudhury received the PhD degree from the University of Illinois at Urbana-Champaign. He joined Duke University after graduation in Fall 2006, where he is now an assistant professor of Electrical and Computer Engineering and Computer Science. He spent the summer of 2010 as a visiting researcher at Microsoft Research, Redmond. His research interests are in wireless networking, mainly at the MAC/PHY layer, and in mobile computing at the application layer. He received the US National Science Foundation CAREER Award in January 2008 and was appointed the Nortel Networks Assistant Professor in 2009. He has served on several conference TPCs, including IEEE INFOCOM, IEEE ICDCS, ACM MobiCom, ACM MobiSys, and ACM Sensys, as well as on the editorial boards of journals, including ACM CCR and Elsevier COMNET. He is also a regular reviewer for papers from the IEEE Transactions on Mobile Computing, the IEEE Transactions on Wireless Communications, the IEEE Transactions on Vehicular Technology, the IEEE/ACM Transactions on Networking, and the ACM Transactions on Sensor Networks. He was the program chair of IEEE WiMesh 2010 and a steering committee member of the ACM S3 workshop. For more details on his research and activities, visit the Systems Networking Research Group (SyNRG) website at

Sneha Kasera received the PhD degree in computer science from the University of Massachusetts Amherst and the master’s degree in electrical communication engineering from the Indian Institute of Science Bangalore. He is now an associate professor in the School of Computing at the University of Utah in Salt Lake City. From 1999-2003, he was a member of the technical staff in the Mobile Networking Research Department of Bell Laboratories. He has held research and development positions at Wipro Infotech and the Center for Development of Advanced Computing in Bangalore, India. Dr. Kasera’s research interests include computer networks and systems encompassing mobile and pervasive systems and wireless networks, network security and reliability, social network applications, overload and congestion control, and multicast communication. He was a recipient of the 2002 Bell Labs President’s Gold Award for his contribution to wireless data research. He has served on many technical program committees including those of ACM MobiCom, ACM Sigmetrics, IEEE INFOCOM, IEEE ICNP, and IEEE SECON, among others. He was the technical program committee cochair for the IEEE ICNP and SECON conferences in 2011. He is currently serving on the editorial boards of the IEEE/ACM Transactions on Networking and ACM/Spring Wireless Networks. In the past, he served as an associate editor of ACM Sigmobile MC2R and Elsevier COMNET.

Li Erran Li received the PhD degree in computer science from Cornell University in 2001, where Joseph Y. Halpern was his advisor. Since graduation, he has been with Bell Labs. His research interests are in networking with a focus on wireless networking and mobile computing. He is an associate editor of Wireless Networks and the IEEE Transactions on Parallel and Distributed Systems, and a guest editor for the IEEE Journal on Selected Areas in Communications special issue on non-cooperative behavior in networking. He is on the steering committee of the ACM MobiSys Workshop on Mobile Cloud Computing and Services (MCS). He has served as a TPC member for ACM MobiCom, ACM MobiHoc, IEEE INFOCOM, and IEEE ICNP many times. He has published more than 50 papers.

Archan Misra received the PhD degree in electrical and computer engineering from the University of Maryland at College Park in May 2000 and the BTech degree in electronics and communication engineering from IIT Kharagpur in August 1993. He is currently an associate professor of information systems at Singapore Management University (SMU), where he also holds the position of deputy director of the five-year government-funded Living Analytics Research Center (LARC). His current research interests include energy-efficient context extraction on mobile devices, mobile phone-based activity recognition, and collaborative stream processing in advanced wireless networks. Prior to joining SMU, he was a senior scientist in the Applied Research Division of Telcordia Technologies, where he led research in areas related to pervasive computing middleware, high-performance cognitive wireless networks, and smart grids. Earlier, from 2001-2008, he served as a research staff member at the IBM T.J. Watson Research Center, where he worked in the broad area of mobile & pervasive computing and stream computing systems. He has published extensively in the areas of pervasive computing, wireless and sensors networks, and context-aware mobile computing. He is a coauthor on papers that received Best Paper Awards from EUC 2008, ACM WOWMOM 2002, and IEEE MILCOM 2001 and was a Best Paper Award nominee at IEEE Percom 2011 and IEEE WoWMoM 2008. While at IBM, he was a task lead on the US ARL-UK MoD-funded 10-year ITA project on fundamental research in network information sciences, a project lead on the Artemis project on applying stream computing technologies for online health analytics, and a technical lead on several projects related to advanced presence technologies for converged telecom networks. Earlier, as an intern at IBM Research in 1995, he deployed one of the world’s first experimental Mobile IP testbeds for nomadic computing. He is presently on the editorial board of the Elsevier Journal of Pervasive and Mobile Computing and also served as a technical editor of the IEEE Wireless Communications magazine from 2004-2008. From 2005-2008, he served as the chair of the IEEE Computer Society's Technical Committee on Computer Communications (TCCC). As part of his professional service, he served as the general chair for MobiQuitous 2009 and as the TPC chair/vice-chair for COMSNETS 2011, IEEE ISWCS 2009, IEEE MASS 2008, IFIP Networking 2008, and IEEE WoWMoM 2006. He delivered invited keynote lectures related to his research on mobile computing and sensor data management at ICST MobilWare 2010 and IEEE WoWMoM 2009. More information can be found at

Michael J. Neely received the BS degrees in both electrical engineering and mathematics from the University of Maryland, College Park, in 1997. He then received a three year Department of Defense NDSEG Fellowship for graduate study at the Massachusetts Institute of Technology, where he received the MS degree in electrical engineering and computer science in 1999 and the PhD degree in 2003. During the summer of 2002, he did an internship in the Distributed Sensor Networks Group at Draper Labs in Cambridge. He joined the Faculty of Electrical Engineering at the University of Southern California in 2004, where he is currently an associate professor. His research interests are in the areas of stochastic network optimization and queuing theory, with applications to wireless networks, mobile ad hoc networks, and switching systems. He received the US National Science Foundation CAREER Award in 2008 and the Viterbi School of Engineering Junior Research Award in 2009. He is a member of Tau Beta Pi and Phi Beta Kappa.

Cristina Nita-Rotaru is an associate professor in the Department of Computer Science at Purdue University, where she established the Dependable and Secure Distributed Systems Laboratory (DS2) and is a member of the Center for Education and Research in Information Assurance and Security (CERIAS). Her research lies at the intersection of information security, distributed systems, and computer networks. The overarching goal of her work is designing and building practical distributed systems and network protocols that are robust to failures and attacks while coping with the resource constraints existent in computing systems and networks. She was a recipient of the US National Science Foundation CAREER Award in 2006 and a recipient of the Purdue Teaching for Tomorrow Award in 2007. She has served on the technical program committee of numerous conferences in security, networking, and distributed systems. She is currently an associate editor for Elsevier Computer Communications and the ACM Transactions on Information and System Security. She currently serves as an assistant director for CERIAS.

Injong Rhee is a professor of computer science at North Carolina State University and runs the Networking Research Lab (NRL). He works primarily on network protocols for the Internet. His major contributions in the field include the development of congestion control protocols, called BIC and CUBIC. Since 2004, these protocols have been the default TCP algorithms for Linux and are currently being used by about 45 percent of Internet web servers around the world and by several tens of millions of Linux users for daily Internet communication. He also invented several multimedia streaming and multicast technologies licensed to companies for commercial applications. He started a company based on these technologies in 2000, where he developed and launched the world's first video streaming products and push-to-talk (PTT) VoIP products for cell phones. His recent research topics include mobile ad hoc networks, delay/disruption tolerant networks, and P2P systems. He consults for companies including Boeing, Lucent Technologies, CISCO, Korea Telecom, LG Electronics, and LG Datacom. He received the US National Science Foundation CAREER Award in 1999 and the NCSU New Inventor's award in 2000.

Vikram Srinivasan received the ME degree from the Indian Institute of Science in 1998 and the PhD degree from the University of California, San Diego, in 2003. He was an assistant professor at the National University of Singapore from 2003-2007. Since 2007, he has been with Alcatel-Lucent Bell Labs. He has published extensively in various top tier IEEE and ACM journals and conferences including the ACM/IEEE Transactions on Networking, the I EEE Transactions on Mobile Computing, the IEEE Transactions on Wireless Communications, ACM MobiCom, IEEE INFOCOM, and more. He served as the area editor of the ACM Mobile Computer Communications Review from 2006-2010. He has served on the program committees of several conferences including ACM MobiCom and IEEE INFOCOM.

Ravi Sundaram received the BTech degree from IIT (Madras) and the MS and PhD degrees from the Massachusetts Institute of Technology. His primary research interests lie in networks and algorithms. He is interested in network performance and approximation algorithms for the design and efficient utilization of networks. He enjoys devising efficient schemes for improving the performance of network-based applications and validating their use through innovative systems implementations. He is also interested in network security and game theoretic aspects of network usage. In the past, he has worked in complexity theory and combinatorics. He joined Northeastern University in the fall of 2003. Prior to that, he was the director of engineering at Akamai Technologies, where he played a critical role in the build out of the world's leading content delivery network; he established the mapping group which is responsible for directing browser requests (over 10 billion a day) to the optimal Akamai server.

Kun Tan received the BE, MS, and PhD degrees all from Tsinghua University, Beijing, China, in 1997, 1999, and 2002, respectively. He is a researcher in the Wireless and Networking Group (WNG) at Microsoft Research Asia (MSRA), Beijing, China. He has broad interests in general networking and systems. His research has focused on congestion control, architecture and protocols of mobile and wireless networking, and software radio systems. He is a member of both the ACM and IEEE. He has served as a program committee member of ACM SIGCOMM, ACM MobiCom, ACM MobiHoc, IEEE DySPAN, and IEEE SECON, and as a program cochair of the ACM MobiArch Workshop.

Steve Weber received the BS degree in 1996 from Marquette University in Milwaukee, Wisconsin, and the MS and PhD degrees from The University of Texas at Austin in 1999 and 2003, respectively. He joined the Department of Electrical and Computer Engineering at Drexel University in 2003, where he is currently an associate professor. His research interests are centered around the mathematical modeling of computer and communication networks, specifically streaming multimedia and ad hoc networks.

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