We invite you to an IEEE Distinguished Lecture by Prof. Ekram Hossain from University of Manitoba, Winnipeg, Canada. The seminar is organized by the Department of Signals and Systems, Chalmers University of Technology.
Time: Mon Sept 12, 2016, at 14:00-15:00 plus time for Q&A
Location: Room EA, floor 4, EDIT building, Hörsalsvägen 11, Campus Johanneberg, Chalmers University of Technology, Gothenburg
Title: On Coalition-Based Cooperative Packet Delivery in Vehicular Delay-Tolerant Networks Under Uncertainty
Cooperative packet delivery can improve the data delivery performance in wireless networks by exploiting the mobility of the nodes, especially in networks with intermittent connectivity, high delay and error rates such as vehicular delay-tolerant networks (VDTNs). For such a network, we study the problem of rational coalition formation among vehicular nodes to cooperatively deliver packets to other nodes in a coalition. Such coalitions are formed by vehicular nodes which can be either well-behaved or misbehaving in the sense that the well-behaved nodes always help each other for packet delivery, while the misbehaving nodes act selfishly and may not help the other nodes. A Bayesian coalitional game model is developed to analyze the behavior of mobile vehicular nodes in coalition formation in presence of this uncertainty of node behavior (i.e., type). Given the beliefs about the other mobile nodes’ types, each mobile node makes a decision to form a coalition, and thus the coalitions in the network vary dynamically. A solution concept called Nash-stability is considered to find a stable coalitional structure in this coalitional game with incomplete information. We also consider another solution concept, namely, the Bayesian core, which guarantees that no node has an incentive to leave the grand coalition. The Bayesian game model is extended to a dynamic game model for which we propose a method for each vehicular mobile node to update its beliefs about other vehicular nodes’ types when the coalitional game is played repeatedly.
Ekram Hossain (IEEE Fellow) is a Professor in the Department of Electrical and Computer Engineering at University of Manitoba, Winnipeg, Canada. He is a Member (Class of 2016) of the College of the Royal Society of Canada. He received his Ph.D. in Electrical Engineering from University of Victoria, Canada, in 2001. Dr. Hossain’s current research interests include design, analysis, and optimization of wireless/mobile/cognitive/green communications networks with emphasis on 5G cellular, applied game theory and network economics. He has authored/edited several books in these areas (http://home.cc.umanitoba.ca/~hossaina). He was elevated to an IEEE Fellow “for contributions to spectrum management and resource allocation in cognitive and cellular radio networks”. Currently he serves as the Editor-in-Chief for the IEEE Communications Surveys and Tutorials and an Editor for IEEE Wireless Communications. Also, he is a member of the IEEE Press Editorial Board. Previously, he served as the Area Editor for the IEEE Transactions on Wireless Communications in the area of “Resource Management and Multiple Access” from 2009-2011, an Editor for the IEEE Transactions on Mobile Computing} from 2007-2012, and an Editor for the IEEE Journal on Selected Areas in Communications – Cognitive Radio Series from 2011-2014. Dr. Hossain has won several research awards including the IEEE Communications Society Transmission, Access, and Optical Systems (TAOS) Technical Committee’s Best Paper Award in IEEE Globecom 2015, University of Manitoba Merit Award in 2010, 2013, 2014, and 2015 (for Research and Scholarly Activities), the 2011 IEEE Communications Society Fred Ellersick Prize Paper Award, and the IEEE Wireless Communications and Networking Conference 2012 (WCNC’12) Best Paper Award. He was a Distinguished Lecturer of the IEEE Communications Society (2012-2015). He is a registered Professional Engineer in the province of Manitoba.