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1.
We develop algorithms for finding minimum energy disjoint paths in an all-wireless network, for both the node and link-disjoint cases. Our major results include a novel polynomial time algorithm that optimally solves the minimum energy 2 link-disjoint paths problem, as well as a polynomial time algorithm for the minimum energy k node-disjoint paths problem. In addition, we present efficient heuristic algorithms for both problems. Our results show that link-disjoint paths consume substantially less energy than node-disjoint paths. We also found that the incremental energy of additional link-disjoint paths is decreasing. This finding is somewhat surprising due to the fact that in general networks additional paths are typically longer than the shortest path. However, in a wireless network, additional paths can be obtained at lower energy due to the broadcast nature of the wireless medium. Finally, we discuss issues regarding distributed implementation and present distributed versions of the optimal centralized algorithms presented in the paper.Anand Srinivas is currently a PhD candidate in the Laboratory for Information and Decision Systems (LIDS) at MIT. He recieved his Masters of Science in EECS from MIT in 2004, and his Bachelors of Applied Science in Computer Engineering from the University of Toronto in 2001. In 2004 he also received a Masters of Science in Aerospace Engineering from MIT. His current research interests include reliability and energy-efficiency in wireless ad-hoc networks, routing and network optimization, graph theory, and the design of efficient algorithms. E-mail: anand3@mit.eduEytan Modiano received his B.S. degree in Electrical Engineering and Computer Science from the University of Connecticut at Storrs in 1986 and his M.S. and Ph.D. degrees, both in Electrical Engineering, from the University of Maryland, College Park, MD, in 1989 and 1992 respectively. He was a Naval Research Laboratory Fellow between 1987 and 1992 and a National Research Council Post Doctoral Fellow during 1992–1993 while he was conducting research on security and performance issues in distributed network protocols.Between 1993 and 1999 he was with the Communications Division at MIT Lincoln Laboratory where he designed communication protocols for satellite, wireless, and optical networks and was the project leader for MIT Lincoln Laboratory’s Next Generation Internet (NGI) project. He joined the MIT faculty in 1999, where he is presently an Associate Professor in the Department of Aeronautics and Astronautics and the Laboratory for Information and Decision Systems (LIDS). His research is on communication networks and protocols with emphasis on satellite, wireless, and optical networks.He is currently an Associate Editor for Communication Networks for IEEE Transactions on Information Theory and for The International Journal of Satellite Communications. He had served as a guest editor for IEEE JSAC special issue on WDM network architectures; the Computer Networks Journal special issue on Broadband Internet Access; the Journal of Communications and Networks special issue on Wireless Ad-Hoc Networks; and for IEEE Journal of Lightwave Technology special issue on Optical Networks. He is the Technical Program co-chair for Wiopt 2006 and vice- chair for Infocom 2007. E-mail: modiano@mit.edu 相似文献
2.
Multi-radio diversity in wireless networks 总被引:1,自引:0,他引:1
This paper describes the Multi-Radio Diversity (MRD) wireless system, which uses path diversity to improve loss resilience in wireless local area networks (WLANs). MRD
coordinates wireless receptions among multiple radios to improve loss resilience in the face of path-dependent frame corruption
over the radio. MRD incorporates two techniques to recover from bit errors and lower the loss rates observed by higher layers,
without consuming much extra bandwidth. The first technique is frame combining, in which multiple, possibly erroneous, copies of a given frame are combined together in an attempt to recover the frame
without retransmission. The second technique is a low-overhead retransmission scheme called request-for-acknowledgment (RFA), which operates above the link layer and below the network layer to attempt to recover from frame combining failures. We
present an analysis that determines how the parameters for these algorithms should be chosen.
We have designed and implemented MRD as a fully functional WLAN infrastructure based on 802.11a. We evaluate the MRD system
under several different physical configurations, using both UDP and TCP, and measured throughput gains up to 3× over single
radio communication schemes employing 802.11’s autorate adaptation scheme.
Computer and Communication Sciences, EPFL, Switzerland.
Allen Miu received his Ph.D. degree at the Massachusetts Institute of Technology in 2006 and is currently a wireless systems architect
at Ruckus Wireless, Inc. He received his S.M. in Computer Science from MIT and a B.Sc. with highest honors in Electrical Engineering
and Computer Science from the University of California at Berkeley. He previously worked on the Cricket Indoor Location System
and was a research intern at Microsoft Research, Redmond in 2000 and Hewlett-Packard Laboratories, Palo Alto in 2002. His
research interests include wireless networks, location systems, mobile computing, and embedded systems.
Hari Balakrishnan is an Associate Professor in the EECS Department and a member of the Computer Science and Artificial Intelligence Laboratory
(CSAIL) at MIT. His research interests is in the area of networked computer systems. In addition to many widely cited papers,
several systems developed as part of his research are available in the public domain. He received a Ph.D. in Computer Science
from the University of California at Berkeley in 1998 and a B.Tech. from the Indian Institute of Technology (Madras) in 1993.
His honors include an Alfred P. Sloan Research Fellowship (2002), an NSF CAREER Award (2000), the ACM doctoral dissertation
award for his work on reliable data transport over wireless networks (1998), and seven award-winning papers at various top
conferences and journals, including the IEEE Communication Society’s William R. Bennett Prize (2004). He has also received
awards for excellence in teaching and research at MIT (Spira, Junior Bose, and Harold Edgerton faculty achievement awards).
C. Emre Koksal received his B.S. degree in Electrical Engineering from the Middle East Technical University, Ankara in 1996. He received
his S.M. and Ph.D. degrees from MIT in Electrical Engineering and Computer Science in 1998 and 2002 respectively. He was a
postdoctoral fellow in the Networks and Mobile Systems Group in the Computer Science and Artificial Intelligence Laboratory
at MIT until 2003. Since then he has been a senior researcher jointly in the Laboratory for Computer Communications and the
Laboratory for Information Theory at EPFL, Switzerland. His general areas of interest are wireless communications, computer
networks, information theory, stochastic processes and financial economics. He also has a certificate on Financial Technology
from the Sloan School of Management at MIT. 相似文献
3.
Theodore S. Stamoulakatos Antonis S. Markopoulos Miltiadis E. Anagnostou Michalis E. Theologou 《Wireless Personal Communications》2007,40(4):523-538
This paper presents a technique which is based on pattern recognition techniques, in order to estimate Mobile Terminal (MT)
velocity. The proposed technique applies on received signal strength (RSS) measurements and more precisely on information
extracted from Iub air interface, in wIDeband code-division multiple access (WCDMA) systems for transmission control purposes.
Pattern recognition is performed by HIDden Markov Model (HMM), which is trained with downlink signal strength measurements
for specific areas, employing Clustering LARge Applications (CLARA) like a clustering method. Accurate results from a single
probe vehicle show the potential of the method, when applied to large scale of MTs.
Theodore S. Stamoulakatos is a Senior Research Associate with the Department of Electrical and Computer Engineering at National Technical University
of Athens (NTUA). He received his B.Sc. in Mathematics from University of the Aegean, Greece, in 1997, and the M.Sc. in Computer
Applications from Dublin City University, Ireland, in 1999 with scholarship from the Irish Ministry of Education. On April
’05 he received his Ph.D. degree from the Department of Electrical Engineering and Computer Science of the National Technical
University of Athens.
He has been lecturing in DCU various courses including Algorithms & Data Structures, Computer Systems, and Advanced Network
Management to both undergraduate and postgraduate students. During his research in NTUA, he has been actively involved in
many European and National projects that match his research interests. Both his academic as well as his industrial experience
(four years in OTEnet S.A.) allow him to publish several papers in journals and international conferences, which are in the
fields of Mobile and Personal Communication Networks, Active Networks, Location Based Services as well as Network and Service
Management. Dr. Stamoulakatos is a member of the IEEE.
Antonis E. Markopoulos obtained his degree in Informatics and Telecommunications Engineering from University of Athens, Greece in 2000. During his
studies he participated in various research projects dealing with the management of fixed and wireless networks. He has also
industrial experience for 2 years in INTRASOFT International S.A participating in several projects, national and European.
He received his PhD in the field of Cellular and Wireless Communication from the National Technical University of Athens in
2005, where he is working as a Senior Research Engineer in the Telecommunication Laboratory. He has published several papers
in journals, international conferences and book chapters. His research interests are in the fields of cellular and wireless
networks of present and future generation (4G, WLAN/WPAN, WiMAX) and more specific in the areas of radio resource management
and security. He has been mainly involved in many European (IST-CELLO, IST-PACWOMAN, IST-MAGNET, a.o) and National (Greek
IST, GGRT) projects. Dr Markopoulos is a member of the IEEE and of the Greek Association of Mechanical and Electrical Engineers.
Miltiades E. Anagnostou was born in Athens, Greece, in 1958. He received the Electrical Engineer’s Diploma from the National Technical University
of Athens (NTUA) in 1981. In 1987 he received his PhD in the area of computer networks. Since 1989 he has been teaching at
the Electrical and Computer Engineering School of NTUA, where he is currently a Full Professor. He teaches courses on modern
telecommunications, computer networks, formal specification, stochastic processes, and network algorithms. His research spans
several fields, including broadband networks, mobile and personal communications, service engineering, mobile agents, pervasive
computing, network algorithms and queuing systems. He is a member of the IEEE and the ACM.
Michael E. Theologou received the degree in Electrical Engineering from Patras University and his Ph.D. degree from the Department of Electrical
Engineering and Computer Science of the National Technical University of Athens.
Currently he is a Professor at National Technical University of Athens, Department of Electrical and Computer Engineering
conducting teaching and research in the wider area of Telecommunication Networks and Systems. His research interests are in
the fields of Mobile and Personal Communication Networks, Computer Networks, Quality of Service. He has many publications
in the above areas. 相似文献
4.
In this paper we develop distributed approaches for power allocation and scheduling in wireless access networks. We consider
a model where users communicate over a set of parallel multi-access fading channels, as in an orthogonal frequency division
multiple access (OFDMA) system. At each time, each user must decide which channels to transmit on and how to allocate its
power over these channels. We give distributed power allocation and scheduling policies, where each user’s actions depend
only on knowledge of their own channel gains. Assuming a collision model for each channel, we characterize an optimal policy
which maximizes the system throughput and also give a simpler sub-optimal policy. Both policies are shown to have the optimal
scaling behavior in several asymptotic regimes.
Xiangping Qin received the B.S. and M.S. degrees in Electrical Engineering from Tsinghua University,China in 1998 and 2000 respectively,
and the Ph.D. degree in Electrical Engineering from Northwestern University in 2005. She is currently a senior engineer at
Samsung Information Systems America. In 2005/2006, She was a postdoctoral associate in the Department of Electrical and Computer
Engineering at Boston University. In 2004, she was an intern on the technical staff of Intel Cooperate Technology Laboratory,
Oregon. Her primary research interests include wireless communication and data networks. She is the recipient of aWalter P.
Murphy Fellowship for the 2000/2001 academic year from the ECE Department at Northwestern University.
Randall A. Berry received the B.S. degree in Electrical Engineering from the University of Missouri-Rolla in 1993 and the M.S. and Ph.D. degrees
in Electrical Engineering and Computer Science from the Massachusetts Institute of Technology in 1996 and 2000, respectively.
In September 2000, he joined the faculty of Northwestern University, where he is currently an Associate Professor in the Department
of Electrical Engineering and Computer Science. In 1998 he was on the technical staff at MIT Lincoln Laboratory in the Advanced
Networks Group, where he worked on optical network protocols. His current research interests include wireless communication,
data networks and information theory. Dr. Berry is the recipient of a 2003 NSF CAREER award and the 2001-02 best teacher award
from the ECE Department at Northwestern. He is currently serving on the editorial board of IEEE Transactions on Wireless Communications and is a guest editor of an upcoming special issue of IEEE Transactions on Information Theory on “Relaying and Cooperation in Networks.” 相似文献
5.
In this paper we study connection admission control (CAC) in IEEE 802.11-based ESS mesh networks. An analytical model is developed
for studying the effects of CAC on mesh network capacity. A distributed CAC scheme is proposed, which incorporates load balancing
when selecting a mesh path for new connections. Our results show that connection level performance, including both average
number of connections and connection blocking probability, can be greatly improved using the proposed mechanism compared to
other admission control schemes.
Dongmei Zhao received the Ph.D. degree in Electrical and Computer Engineering from the University of Waterloo, Waterloo, Ontario, Canada
in June 2002. Since July 2002 she has been with the Department of Electrical and Computer Engineering, McMaster University,
Hamilton, Ontario, Canada where she is an assistant professor. Dr. Zhao’s research interests include modeling and performance
analysis, quality-of-service provisioning, access control and admission control in wireless networks. Dr. Zhao is a member
of the IEEE.
Jun Zou received his B. Eng. and M. Eng. Degrees from Tianjin University, China in 1999 and 2002, respectively. He worked at Siemens
Communication Networks Ltd., Beijing from 2002 to 2004. Currently, he is a PhD. student at McMaster University, Canada. His
research interests include wireless networking, routing protocols, architecture of next generation networks and network security.
Terence D. Todd received the B.A.Sc., M.A.Sc. and Ph.D. degrees in Electrical Engineering from the University of Waterloo, Waterloo, Ontario,
Canada. While at Waterloo Dr. Todd spent 3 years as a Research Associate with the Computer Communications Networks Group (CCNG).
He is currently a Professor of Electrical and Computer Engineering at McMaster University in Hamilton, Ontario, Canada. At
McMaster he has been the Principal Investigator on a number of projects in the optical networks and wireless networking areas.
Professor Todd spent 1991 on research leave in the Distributed Systems Research Department at AT&T Bell Laboratories in Murray
Hill, NJ. He also spent January-December 1998 on research leave at The Olivetti and Oracle Research Laboratory in Cambridge,
England. While at ORL he worked on the piconet project which was an early embedded wireless network testbed. Dr. Todd’s research
interests include metropolitan/local area networks, wireless communications and the performance analysis of computer communication
networks and systems. Dr. Todd is a past Editor of the IEEE/ACM Transactions on Networking and currently holds the NSERC/RIM/CITO
Chair on Pico-Cellular Wireless Internet Access Networks
Dr. Todd is a Professional Engineer in the province of Ontario and a member of the IEEE. 相似文献
6.
Mohammed Smadi Terence D. Todd Vytas Kezys Vahid Azhari Dongmei Zhao 《Wireless Networks》2008,14(6):815-829
In this paper we consider vertical handoff for enterprise-based dual-mode (DM) cellular/WLAN handsets. When the handset roams
out of WLAN coverage, the DM's cellular interface is used to maintain the call by anchoring it through an enterprise PSTN
gateway/PBX. Soft handoff can be achieved in this case if the gateway supports basic conference bridging, since a new leg
of the call can be established to the conference bridge while the existing media stream path is active. Unfortunately this
requires that all intra-enterprise calls be routed through the gateway when the call is established. In this paper we consider
a SIP based architecture to perform conferenced dual-mode handoff and propose a much more scalable mechanism for short-delay
environments, whereby active calls are handed off into the conference bridge prior to the initiation of the vertical handoff.
Results are presented which are taken from a dual-mode handset testbed, from analytic models, and from simulations which characterize
the scalability of the proposed mechanism.
Mohammed Smadi received the B.Eng and Mgmt and M.A.Sc degrees in Computer Engineering from McMaster University in Hamilton, Ontario, Canada.
Mohammed received an NSERC doctoral award in 2005 and is currently a Ph.D. student at the Wireless Networking Group at McMaster
University.
Terence D. Todd received the B.A.Sc, M.A.Sc and Ph.D. degrees in Electrical Engineering from the University of Waterloo, Waterloo, Ontario,
Canada. While at Waterloo he spent 3 years as a Research Associate with the Computer Communications Networks Group (CCNG).
He is currently a Professor of Electrical and Computer Engineering at McMaster University in Hamilton, Ontario, Canada.
Professor Todd spent 1991 on research leave in the Distributed Systems Research Department at AT&T Bell Laboratories in Murray
Hill, NJ. He also spent 1998 on research leave at The Olivetti and Oracle Research Laboratory in Cambridge, England. While
at ORL he worked on the piconet project which was an early embedded wireless network testbed.
Dr. Todd’s research interests include metropolitan/local area networks, wireless communications and the performance analysis
of computer communication networks and systems. He is a past Editor of the IEEE/ACM Transactions on Networking and currently
holds the NSERC/RIM/CITO Chair on Pico-Cellular Wireless Internet Access Networks.
Dr. Todd is a Professional Engineer in the province of Ontario and a member of the IEEE.
Vytas Kezys was born in Hamilton, Canada in 1957. He received the B.Eng. degree in Electrical Engineering from McMaster University, Canada,
in 1979.
From 1979 to 1998, Mr. Kezys was involved in radar and communications research as Principal Research Engineer at the Communications
Research Laboratory, McMaster University. While at McMaster, his research activities included array signal processing for
low-angle tracking radar, radar signal processing, and smart antennas for wireless communications. Mr. Kezys was founder and
President of TalariCom Inc., a start-up company that developed cost effective smart antenna technologies for broadband wireless
access applications.
Currently, Mr. Kezys is Director of Advanced Products at Research in Motion in Waterloo, Canada.
Vahid S. Azhari received his B.S. and M.S. from the Department of Electrical and Computer Engineering, IUST and University of Tehran, Iran,
in 2000 and 2003 respectively. His M.S. research focused on designing scheduling algorithms for switch fabrics. He also worked
for two years for the Iranian Telecommunication Research Centre on developing software for SDH switches. He is currently pursuing
his Ph.D. degree at the Wireless Networking Laboratory, McMaster University, Canada. His main area of research includes handoff
management in integrated wireless networks, WLAN deployment techniques, and wireless mesh networks.
Dongmei Zhao received the Ph.D. degree in Electrical and Computer Engineering from the University of Waterloo, Waterloo, Ontario, Canada
in June 2002. Since July 2002 she has been with the Department of Electrical and Computer Engineering, McMaster University,
Hamilton, Ontario, Canada where she is an assistant professor. Dr. Zhao’s research interests include modeling and performance
analysis, quality-of-service provisioning, access control and admission control in wireless cellular networks and integrated
cellular and ad hoc networks. Dr. Zhao is a member of the IEEE. 相似文献
7.
The proper functioning of mobile ad hoc networks depends on the hypothesis that each individual node is ready to forward packets
for others. This common assumption, however, might be undermined by the existence of selfish users who are reluctant to act
as packet relays in order to save their own resources. Such non-cooperative behavior would cause the sharp degradation of
network throughput. To address this problem, we propose a credit-based Secure Incentive Protocol (SIP) to stimulate cooperation
among mobile nodes with individual interests. SIP can be implemented in a fully distributed way and does not require any pre-deployed
infrastructure. In addition, SIP is immune to a wide range of attacks and is of low communication overhead by using a Bloom
filter. Detailed simulation studies have confirmed the efficacy and efficiency of SIP.
This work was supported in part by the U.S. Office of Naval Research under Young Investigator Award N000140210464 and under
grant N000140210554.
Yanchao Zhang
received the B.E. degree in Computer Communications from Nanjing University of Posts and Telecommunications, Nanjing, China,
in July 1999, and the M.E. degree in Computer Applications from Beijing University of Posts and Telecommunications, Beijing,
China, in April 2002. Since September 2002, he has been working towards the Ph.D. degree in the Department of Electrical and
Computer Engineering at the University of Florida, Gainesville, Florida, USA. His research interests are network and distributed
system security, wireless networking, and mobile computing, with emphasis on mobile ad hoc networks, wireless sensor networks,
wireless mesh networks, and heterogeneous wired/wireless networks.
Wenjing Lou
is an assistant professor in the Electrical and Computer Engineering department at Worcester Polytechnic Institute. She obtained
her Ph.D degree in Electrical and Computer Engineering from University of Florida in 2003. She received the M.A.Sc degree
from Nanyang Technological University, Singapore, in 1998, the M.E degree and the B.E degree in Computer Science and Engineering
from Xi'an Jiaotong University, China, in 1996 and 1993 respectively. From Dec 1997 to Jul 1999, she worked as a Research
Engineer in Network Technology Research Center, Nanyang Technological University. Her current research interests are in the
areas of ad hoc and sensor networks, with emphases on network security and routing issues.
Wei Liu
received his B.E. and M.E. in Electrical and Information Engineering from Huazhong University of Science and Technology, Wuhan,
China, in 1998 and 2001. In August 2005, he received his PhD in Electrical and Computer Engineering from University of Florida.
Currently, he is a senior technical member with Scalable Network Technologies. His research interest includes cross-layer
design, and communication protocols for mobile ad hoc networks, wireless sensor networks and cellular networks.
Yuguang Fang
received a Ph.D. degree in Systems Engineering from Case Western Reserve University in January 1994 and a Ph.D degree in Electrical
Engineering from Boston University in May 1997. He was an assistant professor in the Department of Electrical and Computer
Engineering at New Jersey Institute of Technology from July 1998 to May 2000. He then joined the Department of Electrical
and Computer Engineering at University of Florida in May 2000 as an assistant professor, got an early promotion to an associate
professor with tenure in August 2003 and a professor in August 2005. He has published over 150 papers in refereed professional
journals and conferences. He received the National Science Foundation Faculty Early Career Award in 2001 and the Office of
Naval Research Young Investigator Award in 2002. He has served on many editorial boards of technical journals including IEEE
Transactions on Communications, IEEE Transactions on Wireless Communications, IEEE Transactions on Mobile Computing and ACM
Wireless Networks. He is a senior member of the IEEE. 相似文献
8.
In this paper, we study an approach for sharing channels to improve network utilization in packet-switched cellular networks.
Our scheme exploits unused resources in neighboring cells without the need for global coordination. We formulate a minimax
approach to optimizing the allocation of channels in this sharing scheme. We develop a measurement-based distributed algorithm
to achieve this objective and study its convergence. We illustrate, via simulation results, that the distributed channel sharing
scheme performs significantly better than the fixed channel scheme over a wide variety of traffic conditions.
This research was supported in part by the National Science Foundation through grants ECS-0098089, ANI-0099137, ANI-0207892,
ANI-9805441, ANI-0099137, and ANI-0207728, and by an Indiana 21st century grant. A conference version of this paper appeared
in INFOCOM 99. This work was done when all the authors were at Purdue University.
Suresh Kalyanasundaram received his Bachelors degree in Electrical and Electronics Engineering and Masters degree in Physics from Birla Institute
of Technology and Science, Pilani, India in 1996. He received his Ph.D. from the School of Electrical and Computer Engineering,
Purdue University, in May 2000. Since then he has been with Motorola, working in the area of performance analysis of wireless
networks.
Junyi Li received his B.S. and M.S. degrees from Shanghai Jiao Tong University, and Ph.D. degree from Purdue University. He was with
the Department of Digital Communications Research at Bell Labs, Lucent Technologies from 1998 to 2000. In 2000 as a founding
member he jointed Flarion Technologies, where he is now Director of Technology. He is a senior member of IEEE.
Edwin K.P. Chong received the B.E.(Hons.) degree with First Class Honors from the University of Adelaide, South Australia, in 1987; and the
M.A. and Ph.D. degrees in 1989 and 1991, respectively, both from Princeton University, where he held an IBM Fellowship. He
joined the School of Electrical and Computer Engineering at Purdue University in 1991, where he was named a University Faculty
Scholar in 1999, and was promoted to Professor in 2001. Since August 2001, he has been a Professor of Electrical and Computer
Engineering and a Professor of Mathematics at Colorado State University. His current interests are in communication networks
and optimization methods. He coauthored the recent book, An Introduction to Optimization, 2nd Edition, Wiley-Interscience,
2001. He was on the editorial board of the IEEE Transactions on Automatic Control, and is currently an editor for Computer
Networks. He is an IEEE Control Systems Society Distinguished Lecturer. He received the NSF CAREER Award in 1995 and the ASEE
Frederick Emmons Terman Award in 1998.
Ness B. Shroff received his Ph.D. degree from Columbia University, NY in 1994. He is currently an Associate Professor in the School of Electrical
and Computer Engineering at Purdue University. His research interests span the areas of wireless and wireline communication
networks. He is especially interested in fundamental problems in the design, performance, scheduling, capacity, pricing, and
control of these networks. His research is funded by various companies such as Intel, Hewlett Packard, Nortel, AT&T, and L.
G. Electronics; and government agencies such as the National Science Foundation, Indiana Dept. of Transportation, and the
Indiana 21st Century fund.
Dr. Shroff is an editor for IEEE/ACM Trans. on Networking and the Computer Networks Journal, and past editor of IEEE Communications
Letters. He was the conference chair for the 14th Annual IEEE Computer Communications Workshop (in Estes Park, CO, October
1999) and program co-chair for the symposium on high-speed networks, Globecom 2001 (San Francisco, CA, November 2000). He
is also the Technical Program co-chair for IEEE INFOCOM'03 and panel co-chair for ACM Mobicom'02. He received the NSF CAREER
award in 1996. 相似文献
9.
We propose an innovative resource management scheme for TDMA based mobile ad hoc networks. Since communications between some
important nodes in the network are more critical, they should be accepted by the network with high priority in terms of network
resource usage and quality of service (QoS) support. In this scheme, we design a location-aware bandwidth pre-reservation
mechanism, which takes advantage of each mobile node’s geographic location information to pre-reserve bandwidth for such high
priority connections and thus greatly reduces potential scheduling conflicts for transmissions. In addition, an end-to-end
bandwidth calculation and reservation algorithm is proposed to make use of the pre-reserved bandwidth. In this way, time slot
collisions among different connections and in adjacent wireless links along a connection can be reduced so that more high
priority connections can be accepted into the network without seriously hurting admissions of other connections. The salient
feature of our scheme is the collaboration between the routing and MAC layer that results in the more efficient spatial reuse
of limited resources, which demonstrates how cross-layer design leads to better performance in QoS support. Extensive simulations
show that our scheme can successfully provide better communication quality to important nodes at a relatively low price. Finally,
several design issues and future work are discussed.
Xiang Chen received the B.E. and M.E. degrees in electrical engineering from Shanghai Jiao Tong University, Shanghai, China, in 1997
and 2000, respectively. Afterwards, he worked as a MTS (member of technical staff) in Bell Laboratories, Beijing, China. He
is currently working toward the Ph.D. degree in the department of Electrical and Computer Engineering at the University of
Florida. His research is focused on protocol design and performance evaluation in wireless networks, including cellular networks,
wireless LANs, and mobile ad hoc networks. He is a member of Tau Beta Pi and a student member of IEEE.
Wei Liu received the BE and ME degrees in electrical engineering from Huazhong University of Science and Technology, Wuhan, China,
in 1998 and 2001, respectively. He is currently pursuing the P.hD. degree in the Department of Electrical and Computer Engineering,
University of Florida, Gainesville, where he is a research assistant in the Wireless Networks Laboratory (WINET). His research
interest includes QoS, secure and power efficient routing, and MAC protocols in mobile ad hoc networks and sensor networks.
He is a student member of the IEEE.
Hongqiang Zhai received the B.E. and M.E. degrees in electrical engineering from Tsinghua University, Beijing, China, in July 1999 and January
2002 respectively. He worked as a research intern in Bell Labs Research China from June 2001 to December 2001, and in Microsoft
Research Asia from January 2002 to July 2002. Currently he is pursuing the Ph.D. degree in the Department of Electrical and
Computer Engineering, University of Florida. He is a student member of IEEE.
Yuguang Fang received a Ph.D. degree in Systems and Control Engineering from Case Western Reserve University in January 1994, and a Ph.D.
degree in Electrical Engineering from Boston University in May 1997. From June 1997 to July 1998, he was a Visiting Assistant
Professor in Department of Electrical Engineering at the University of Texas at Dallas. From July 1998 to May 2000, he was
an Assistant Professor in the Department of Electrical and Computer Engineering at New Jersey Institute of Technology. In
May 2000, he joined the Department of Electrical and Computer Engineering at University of Florida where he got the early
promotion to Associate Professor with tenure in August 2003 and to Full Professor in August 2005. He has published over 180
papers in refereed professional journals and conferences. He received the National Science Foundation Faculty Early Career
Award in 2001 and the Office of Naval Research Young Investigator Award in 2002. He is currently serving as an Editor for
many journals including IEEE Transactions on Communications, IEEE Transactions on Wireless Communications, IEEETransactions
on Mobile Computing, and ACM Wireless Networks. He is also actively participating in conference organization such as the Program
Vice-Chair for IEEE INFOCOM’2005, Program Co-Chair for the Global Internet and Next Generation Networks Symposium in IEEE
Globecom’2004 and the Program Vice Chair for 2000 IEEE Wireless Communications and Networking Conference (WCNC’2000). 相似文献
10.
In this paper, we develop an analytical model to evaluate the delay performance of the burst-frame-based CSMA/CA protocol
under unsaturated conditions, which has not been fully addressed in the literature. Our delay analysis is unique in that we
consider the end-to-end packet delay, which is the duration from the epoch that a packet enters the queue at the MAC layer
of the transmitter side to the epoch that the packet is successfully received at the receiver side. The analytical results
give excellent agreement with the simulation results, which represents the accuracy of our analytical model. The results also
provide important guideline on how to set the parameters of the burst assembly policy. Based on these results, we further
develop an efficient adaptive burst assembly policy so as to optimize the throughput and delay performance of the burst-frame-based
CSMA/CA protocol.
Kejie Lu received the B.E. and M.E. degrees in Telecommunications Engineering from Beijing University of Posts and Telecommunications,
Beijing, China, in 1994 and 1997, respectively. He received the Ph.D. degree in Electrical Engineering from the University
of Texas at Dallas in 2003. In 2004 and 2005, he was a postdoctoral research associate in the Department of Electrical and
Computer Engineering, University of Florida. Currently, he is an assistant professor in the Department of Electrical and Computer
Engineering, University of Puerto Rico at Mayagüez. His research interests include architecture and protocols design for computer
and communication networks, performance analysis, network security, and wireless communications.
Jianfeng Wang received the B.E. and M.E. degrees in electrical engineering from Huazhong University of Science and Technology, China, in
1999 and 2002, respectively, and the Ph.D. degree in electrical engineering from University of Florida in 2006. From January
2006 to July 2006, he was a research intern in wireless standards and technology group, Intel Corporation. In October 2006,
he joined Philips Research North America as a senior member research staff in wireless communications and networking department.
He is engaged in research and standardization on wireless networks with emphasis on medium access control (MAC).
Dapeng Wu received B.E. in Electrical Engineering from Huazhong University of Science and Technology, Wuhan, China, in 1990, M.E. in
Electrical Engineering from Beijing University of Posts and Telecommunications, Beijing, China, in 1997, and Ph.D. in Electrical
and Computer Engineering from Carnegie Mellon University, Pittsburgh, PA, in 2003.
Since August 2003, he has been with Electrical and Computer Engineering Department at University of Florida, Gainesville,
FL, as an Assistant Professor. His research interests are in the areas of networking, communications, multimedia, signal processing,
and information and network security. He received the IEEE Circuits and Systems for Video Technology (CSVT) Transactions Best
Paper Award for Year 2001, and the Best Paper Award in International Conference on Quality of Service in Heterogeneous Wired/Wireless
Networks (QShine) 2006.
Currently, he serves as the Editor-in-Chief of Journal of Advances in Multimedia, and an Associate Editor for IEEE Transactions
on Wireless Communications, IEEE Transactions on Circuits and Systems for Video Technology, IEEE Transactions on Vehicular
Technology, and International Journal of Ad Hoc and Ubiquitous Computing. He is also a guest-editor for IEEE Journal on Selected
Areas in Communications (JSAC), Special Issue on Cross-layer Optimized Wireless Multimedia Communications. He served as Program
Chair for IEEE/ACM First International Workshop on Broadband Wireless Services and Applications (BroadWISE 2004); and as a
technical program committee member of over 30 conferences. He is Vice Chair of Mobile and wireless multimedia Interest Group
(MobIG), Technical Committee on Multimedia Communications, IEEE Communications Society. He is a member of the Best Paper Award
Committee, Technical Committee on Multimedia Communications, IEEE Communications Society.
Yuguang Fang received a Ph.D. degree in Systems Engineering from Case Western Reserve University in January 1994 and a Ph.D. degree in
Electrical Engineering from Boston University in May 1997. He was an assistant professor in the Department of Electrical and
Computer Engineering at New Jersey Institute of Technology from July 1998 to May 2000. He then joined the Department of Electrical
and Computer Engineering at University of Florida in May 2000 as an assistant professor and got an early promotion to an associate
professor with tenure in August 2003 and to a full professor in August 2005. He has published over 200 papers in refereed
professional journals and conferences. He received the National Science Foundation Faculty Early Career Award in 2001 and
the Office of Naval Research Young Investigator Award in 2002. He has served on several editorial boards of technical journals
including IEEE Transactions on Communications, IEEE Transactions on Wireless Communications, IEEE Transactions on Mobile Computing
and ACM Wireless Networks. He have also been actively participating in professional conference organizations such as serving
as The Steering Committee Co-Chair for QShine, the Technical Program Vice-Chair for IEEE INFOCOM’2005, Technical Program Symposium
Co-Chair for IEEE Globecom’2004, and a member of Technical Program Committee for IEEE INFOCOM (1998, 2000, 2003–2007). He
is a senior member of the IEEE. 相似文献
11.
An important objective of next-generation wireless networks is to provide quality of service (QoS) guarantees. This requires
a simple and efficient wireless channel model that can easily translate into connection-level QoS measures such as data rate,
delay and delay-violation probability. To achieve this, in Wu and Negi (IEEE Trans. on Wireless Communications 2(4) (2003)
630–643), we developed a link-layer channel model termed effective capacity, for the setting of a single hop, constant-bit-rate arrivals, fluid traffic, and wireless channels with negligible propagation
delay. In this paper, we apply the effective capacity technique to deriving QoS measures for more general situations, namely,
(1) networks with multiple wireless links, (2) variable-bit-rate sources, (3) packetized traffic, and (4) wireless channels
with non-negligible propagation delay.
Dapeng Wu received B.E. in Electrical Engineering from Huazhong University of Science and Technology, Wuhan, China, in 1990, M.E. in
Electrical Engineering from Beijing University of Posts and Telecommunications, Beijing, China, in 1997, and Ph.D. in Electrical
and Computer Engineering from Carnegie Mellon University, Pittsburgh, PA, in 2003. From July 1997 to December 1999, he conducted
graduate research at Polytechnic University, Brooklyn, New York. During the summers of 1998, 1999 and 2000, he conducted research
at Fujitsu Laboratories of America, Sunnyvale, California, on architectures and traffic management algorithms in the Internet
and wireless networks for multimedia applications.
Since August 2003, he has been with Electrical and Computer Engineering Department at University of Florida, Gainesville,
FL, as an Assistant Professor. His research interests are in the areas of networking, communications, multimedia, signal processing,
and information and network security. He received the IEEE Circuits and Systems for Video Technology (CSVT) Transactions Best
Paper Award for Year 2001.
Currently, he is an Associate Editor for the IEEE Transactions on Vehicular Technology and Associate Editor for International
Journal of Ad Hoc and Ubiquitous Computing. He served as Program Chair for IEEE/ACM First International Workshop on Broadband
Wireless Services and Applications (BroadWISE 2004); and as TPC member of over 20 conferences such as IEEE INFOCOM'05, IEEE
ICC'05, IEEE WCNC'05, and IEEE Globecom'04. He is Vice Chair of Mobile and wireless multimedia Interest Group (MobIG), Technical
Committee on Multimedia Communications, IEEE Communications Society. He is a member of the Award Committee, Technical Committee
on Multimedia Communications, IEEE Communications Society. He is also Director of Communications, IEEE Gainesville Section.
Rohit Negi received the B.Tech. degree in Electrical Engineering from the Indian Institute of Technology, Bombay, India in 1995. He
received the M.S. and Ph.D. degrees from Stanford University, CA, USA, in 1996 and 2000 respectively, both in Electrical Engineering.
He has received the President of India Gold medal in 1995.
Since 2000, he has been with the Electrical and Computer Engineering department at Carnegie Mellon University, Pittsburgh,
PA, USA, where he is an Assistant Professor. His research interests include signal processing, coding for communications systems,
information theory, networking, cross-layer optimization and sensor networks. 相似文献
12.
Subalakshmi Venugopal Wesley Chen T. D. Todd Krishna Sivalingam 《Wireless Networks》2007,13(1):93-105
This paper considers a low power wireless infrastructure network that uses multi-hop communications to provide end user connectivity.
A generalized Rendezvous Reservation Protocol (RRP) is proposed which permits multi-hop infrastructure nodes to adapt their
power consumption in a dynamic fashion. When nodes have a long-term association, power consumption can be reduced by having
them periodically rendezvous for the purpose of exchanging data packets. In order to support certain applications, the system
invokes a connection set up process to establish the end-to-end path and selects node rendezvous rates along the intermediate
nodes to meet the application’s quality of service (QoS) needs. Thus, the design challenge is to dynamically determine rendezvous
intervals based on incoming applications’ QoS needs, while conserving battery power. In this paper, we present the basic RRP
mechanism and an enhanced mechanism called Rendezvous Reservation Protocol with Battery Management (RRP-BM) that incorporates
node battery level information. The performance of the system is studied using discrete-event simulation based experiments
for different network topologies. The chief metrics considered are average power consumption and system lifetime (that is to be maximized). The QoS metrics specified are packet latency and end-to-end setup latency. It is shown that the
use of the RRP-BM can increase the lifetime up to 48% as compared to basic RRP by efficiently reducing the energy consumption.
This work was supported by a grant from the Natural Sciences and Engineering Research Council of Canada and Communications
and Information Technology Ontario (CITO). Part of the research was supported by Air Force Office of Scientific Research grants
F-49620-97-1-0471 and F-49620-99-1-0125; Laboratory for Telecommunications Sciences, Adelphi, Maryland; and Intel Corporation.
The authors may be reached via e-mail at todd@mcmaster. ca, krishna@umbc. edu. The basic RRP mechanism was presented at the
IASTED International Conference on Wireless and Optical Communications, Banff, Canada, July 2002.
Subalakshmi Venugopal received her Bachelors in Computer Science from R.V. College of Engineering, Bangalore, India and her M.S. degree in Computer
Science from Washington State University. She interned as a student researcher at the Indian Institute of Science, Bangalore,
India. Ms. Venugopal is currently employed with Microsoft Corporation in Redmond, WA and is part of the “Kids and Education
Group”. Her research interests include low power wireless ad hoc networks.
Zhengwei (Wesley) Chen received the M.E. in Electrical & Computer Engineering Dept from McMaster University in Canada in 2002. He joined Motorola
Inc. as a CDMA2000 system engineer in 2000. In 2002, he joined UTStarcom as a manager of the Global Service Solution Department.
He is currently in charge of R&D for Advanced Services related to the TVoIP and Softswitch products.
Terry Todd received the B.A.Sc, M.A.Sc and Ph.D degrees in Electrical Engineering from the University of Waterloo in Waterloo, Ontario,
Canada. While at Waterloo he also spent 3 years as a Research Associate with the Computer Communications Networks Group (CCNG).
During that time he worked on the Waterloo Experimental Local Area Network, which was an early local area network testbed.
In 1991 Dr. Todd was on research leave in the Distributed Systems Research Department at AT&T Bell Laboratories in Murray
Hill, NJ. He also spent 1998 as a visiting researcher at The Olivetti and Oracle Research Laboratory (ORL) in Cambridge, England.
While at ORL he worked on the piconet project, which was an embedded low power wireless network testbed. Dr. Todd is currently
a Professor of Electrical and Computer Engineering at McMaster University in Hamilton, Ontario, Canada. At McMaster he has
been the Principal Investigator on a number of major research projects in the optical and wireless networking areas. He currently
directs a large group working on wireless mesh networks and wireless VoIP. Professor Todd holds the NSERC/RIM/CITO Chair on
Pico-Cellular Wireless Internet Access Networks. Dr. Todd’s research interests include metropolitan/local area networks, wireless
communications and the performance analysis of computer communication networks and systems. Professor Todd is a Professional
Engineer in the province of Ontario.
Krishna M. Sivalingam is an Associate Professor in the Dept. of CSEE at University of Maryland, Baltimore County. Previously, he was with the School
of EECS at Washington State University, Pullman from 1997 until 2002; and with the University of North Carolina Greensboro
from 1994 until 1997. He has also conducted research at Lucent Technologies’ Bell Labs in Murray Hill, NJ, and at AT&T Labs
in Whippany, NJ. He received his Ph.D. and M.S. degrees in Computer Science from State University of New York at Buffalo in
1994 and 1990 respectively; and his B.E. degree in Computer Science and Engineering in 1988 from Anna University, Chennai
(Madras), India. While at SUNY Buffalo, he was a Presidential Fellow from 1988 to 1991.
His research interests include wireless networks, optical wavelength division multiplexed networks, and performance evaluation.
He holds three patents in wireless networks and has published several research articles including more than thirty journal
publications. He has published an edited book on Wireless Sensor Networks in 2004 and edited books on optical WDM networks
in 2000 and 2004. He served as a Guest Co-Editor for special issues of the ACM MONET journal on “Wireless Sensor Networks”
in 2003 and 2004; and an issue of the IEEE Journal on Selected Areas in Communications on optical WDM networks (2000). He
is co-recipient of the Best Paper Award at the IEEE International Conference on Networks 2000 held in Singapore. His work
has been supported by several sources including AFOSR, NSF, Cisco, Intel and Laboratory for Telecommunication Sciences. He
is a member of the Editorial Board for ACM Wireless Networks Journal, IEEE Transactions on Mobile Computing, Ad Hoc and Sensor
Wireless Networks Journal, and KICS Journal of Computer Networks.
He serves as Steering Committee Co-Chair for IEEE/CreateNet International Conference on Broadband Networks (BroadNets) that
was created in 2004. He is currently serving as General Co-Vice-Chair for the Second Annual International Mobiquitous conference
to be held in San Diego in 2005 and as General Co-Chair for the First IEEE/CreateNet International Conference on Security
and Privacy for Emerging Areas in Communication Networks (SecureComm) to be held in Athens, Greece in Sep. 2005. He served
as Technical Program Co-Chair for the First IEEE Conference on Sensor and Ad Hoc Communications and Networks (SECON) held
at Santa Clara, CA in 2004; as General Co-Chair for SPIE Opticomm 2003 (Dallas, TX) and for ACM Intl. Workshop on Wireless
Sensor Networks and Applications (WSNA) 2003 held in conjunction with ACM MobiCom 2003 at San Diego, CA; as Technical Program
Co-Chair of SPIE/IEEE/ACM OptiComm conference at Boston, MA in July 2002; and as Workshop Co-Chair for WSNA 2002 held in conjunction
with ACM MobiCom 2002 at Atlanta, GA in Sep 2002. He is a Senior Member of IEEE and a member of ACM. 相似文献
13.
Francisco M. Delicado Pedro Cuenca Luis Orozco-Barbosa Antonio Garrido 《Wireless Personal Communications》2005,34(1-2):67-90
Recent advances on wireless technology are enabling the design and deployment of multiservice wireless networks. In order
to be able to meet the QoS requirements of the various applications, it is essential to deploy QoS provisioning mechanisms.
In this paper, we present a QoS framework to support various types of services in a wireless networking environment. Under
this QoS framework, we propose various resource request mechanisms. We carry out a comparative study of the proposed schemes.
Our simulation results show the effectiveness of the mechanisms when supporting different services, such as video, voice,
best-effort and background traffic.
Francisco M. Delicado This author received his M.Sc. degree in Physics (Electronics and Computer Science) from the University Complutense of Madrid,
Madrid, Spain in 1995. He is currently a Ph.D. degree student in the Department of Computer Engineering at the University
of Castilla-La Mancha. His research interests include high-performance networks, specially wireless LAN, QoS over WLAN, video
compression, video transmission and error-resilient protocol architectures.
Pedro Cuenca This author received his M.Sc. degree in Physics (Electronics and Computer Science, award extraordinary) from the University
of Valencia in 1994. He got his Ph.D. degree in Computer Engineering in 1999 from the Polytechnic University of Valencia,
Spain. In 1995 he joined the Department de Computer Engineering at the University of Castilla-La Mancha. He is currently an
Associate Professor of Communications and Computer Networks. He has also been a visiting researcher at The Nottingham Trent
University, Nottingham (England) and at the Multimedia Communications Research Laboratory, University of Ottawa (Canada).
His research topics are centered in the area of high-performance networks, wireless LAN, video compression, QoS video transmission
and error-resilient protocol architectures. He has served in the organization of International Conferences as Session Chair.
He has been reviewer for several Journals and for several International Conferences. He is a member of the IFIP 6.8 Working
Group and a member of the IEEE.
Luis Orozco-Barbosa This author received the B.Sc. degree in electrical and computer engineering from Universidad Autonoma Metropolitana, Mexico,
in 1979, the Diplome d'Etudes Approfondies from ENSIMAG, France, in 1984 and the Doctorat de l'Universite from Universite
Pierre et Marie Curie, France, in 1987, both in computer science. From 1991 to 2002, he was a Faculty Member of Computer Engineering
at the School of Information Technology and Engineering (SITE), University of Ottawa, Canada. In 2002, he joined the Department
of Computer Engineering at Universidad de Castilla La Mancha (SPAIN) where he is currently Director of the Albacete Research
Institute of Informatics. He has published over 180 papers in international Journals and Conferences on computer networks
and performance evaluation. His current research interests include Internet protocols, video communications, wireless networks,
traffic modeling and performance evaluation. He is a member of the IEEE.
Antonio Garrido This author received the degree in physics (electronics and computer science) and the Ph.D. degrees from the University of
Granada, Spain, in 1986 and University of Valencia, Spain, in 1991, respectively. In 1986, he joined the Department of Computer
Engineering at the University of Castilla-La Mancha, where he is currently a Full Professor of Computer Architecture and Technology
and Dean of the EscuelaPolitecnica Superior de Albacete (School of Computer Engineering). His research interests include high-performance
networks, telemedicine, video compression, and video transmission. He has published over 40 papers in international journals
conferences on performance evaluation of parallel computer and communications systems and compression and transmission in
high-speed networks. He has led several research projects in telemedicine, computer networks and advanced computer system
architectures. 相似文献
14.
In order to conserve battery power in very dense sensor networks, some sensor nodes may be put into the sleep state while
other sensor nodes remain active for the sensing and communication tasks. In this paper, we study the node sleep scheduling
problem in the context of clustered sensor networks. We propose and analyze the Linear Distance-based Scheduling (LDS) technique
for sleeping in each cluster. The LDS scheme selects a sensor node to sleep with higher probability when it is farther away
from the cluster head. We analyze the energy consumption, the sensing coverage property, and the network lifetime of the proposed
LDS scheme. The performance of the LDS scheme is compared with that of the conventional Randomized Scheduling (RS) scheme.
It is shown that the LDS scheme yields more energy savings while maintaining a similar sensing coverage as the RS scheme for
sensor clusters. Therefore, the LDS scheme results in a longer network lifetime than the RS scheme.
Jing Deng received the B.E. and M.E. degrees in Electronic Engineering from Tsinghua University, Beijing, P. R. China, in 1994 and
1997, respectively, and the Ph.D. degree in Electrical and Computer Engineering from Cornell University, Ithaca, NY, in 2002.
Dr. Deng is an assistant professor in the Department of Computer Science at the University of New Orleans. From 2002 to 2004,
he visited the CASE center and the Department of Electrical Engineering and Computer Science at Syracuse University, Syracuse,
NY as a research assistant professor, supported by the Syracuse University Prototypical Research in Information Assurance
(SUPRIA) program. He was a teaching assistant from 1998 to 1999 and a research assistant from 1999 to 2002 in the School of
Electrical and Computer Engineering at Cornell University. His interests include mobile ad hoc networks, wireless sensor networks,
wireless network security, energy efficient wireless networks, and information assurance.
Wendi B. Heinzelman is an assistant professor in the Department of Electrical and Computer Engineering at the University of Rochester. She received
a B.S. degree in Electrical Engineering from Cornell University in 1995 and M.S. and Ph.D. degrees in Electrical Engineering
and Computer Science from MIT in 1997 and 2000 respectively. Her current research interests lie in the areas of wireless communications
and networking, mobile computing, and multimedia communication. Dr. Heinzelman received the NSF Career award in 2005 for her
work on cross-layer optimizations for wireless sensor networks, and she received the ONR Young Investigator award in 2005
for her research on balancing resource utilization in wireless sensor networks. Dr. Heinzelman was co-chair of the 1st Workshop
on Broadband Advanced Sensor Networks (BaseNets '04), and she is a member of Sigma Xi, the IEEE, and the ACM.
Yunghsiang S. Han was born in Taipei, Taiwan, on April 24, 1962. He received the B.S. and M.S. degrees in electrical engineering from the National
Tsing Hua University, Hsinchu, Taiwan, in 1984 and 1986, respectively, and the Ph.D. degree from the School of Computer and
Information Science, Syracuse University, Syracuse, NY, in 1993. From 1986 to 1988 he was a lecturer at Ming-Hsin Engineering
College, Hsinchu, Taiwan. He was a teaching assistant from 1989 to 1992 and from 1992 to 1993 a research associate in the
School of Computer and Information Science, Syracuse University. From 1993 to 1997 he was an Associate Professor in the Department
of Electronic Engineering at Hua Fan College of Humanities and Technology, Taipei Hsien, Taiwan. From 1997 to 2004 he was
with the Department of Computer Science and Information Engineering at National Chi Nan University, Nantou, Taiwan. He was
promoted to Full Professor in 1998. From June to October 2001 he was a visiting scholar in the Department of Electrical Engineering
at University of Hawaii at Manoa, HI, and from September 2002 to January 2004 he was the SUPRIA visiting research scholar
in the Department of Electrical Engineering and Computer Science and CASE center at Syracuse University, NY. He is now with
the Graduate Institute of Communication Engineering at National Taipei University, Taipei, Taiwan. His research interests
are in wireless networks, security, and error-control coding. Dr. Han is a winner of 1994 Syracuse University Doctoral Prize.
Pramod K. Varshney was born in Allahabad, India on July 1, 1952. He received the B.S. degree in electrical engineering and computer science
(with highest honors), and the M.S. and Ph.D. degrees in electrical engineering from the University of Illinois at Urbana-Champaign
in 1972, 1974, and 1976 respectively. Since 1976 he has been with Syracuse University, Syracuse, NY where he is currently
a Professor of Electrical Engineering and Computer Science and the Research Director of the New York State Center for Advanced
Technology in Computer Applications and Software Engineering. His current research interests are in distributed sensor networks
and data fusion, detection and estimation theory, wireless communications, intelligent systems, signal and image processing,
and remote sensing he has published extensively. He is the author of Distributed Detection and Data Fusion, published by Springer-Verlag
in 1997 and has co-edited two other books. Dr. Varshney is a member of Tau Beta Pi and is the recipient of the 1981 ASEE Dow
Outstanding Young Faculty Award. He was elected to the grade of Fellow of the IEEE in 1997 for his contributions in the area
of distributed detection and data fusion. In 2000, he received the Third Millennium Medal from the IEEE and Chancellor's Citation
for exceptional academic achievement at Syracuse University. He serves as a distinguished lecturer for the AES society of
the IEEE. He is on the editorial board Information Fusion. He was the President of International Society of Information Fusion
during 2001. 相似文献
15.
This paper studies scheduling algorithms for an infra-structure based wireless local area network with multiple simultaneous
transmission channels. A reservation-based medium access control protocol is assumed where the base station (BS) allocates
transmission slots to the system mobile stations based on their requests. Each station is assumed to have a tunable transmitter
and tunable receiver. For this network architecture, the scheduling algorithms can be classified into two categories: contiguous
and non-contiguous, depending on whether slots are allocated contiguously to the mobile stations. The main objective of the
scheduling algorithms is to achieve high channel utility while having low time complexity. In this paper, we propose three
scheduling algorithms termed contiguous sorted sequential allocation (CSSA), non-contiguous round robin allocation (NCRRA)
and non-contiguous sorted round robin allocation (NCSRRA). Among these, CSSA schedules each station in contiguous mode, while
other two algorithms, NCRRA and NCSRRA, schedule stations in non-contiguous mode. Through extensive analysis and simulation,
the results demonstrate that the CSSA with only slightly increased complexity can achieve much higher channel utility when
compared to the existing contiguous scheduling algorithms. The NCRRA and NCSRRA on the other hand, results in significantly
lower complexity, while still achieving the optimal channel utility compared to existing non-contiguous scheduling algorithms.
Chonggang Wang received a B.Sc. (honors) degree from Northwestern Polytechnic University, Xi'an, China, in 1996, and M.S. and Ph. D. degrees
in communication and information system from University of Electrical Science and Technology in China, Chengdu, China, and
Beijing University of Posts and Telecommunications, Beijing, China, in 1999 and 2002, respectively. From September 2002 to
November 2003 he has been with the Hong Kong University of Science and Technology, Hong Kong, where he is an associate researcher
in the Department of Computer Science. He is now a post-doctoral research fellow in University of Arkansas, Arkansas. His
current research interests are in wireless networks with QoS guarantee, sensor networks, peer-to-peer and overlay networks.
Bo Li received the B.S. (summa cum laude) and M.S. degrees in the Computer Science from Tsinghua University, Beijing, P. R. China,
in 1987 and 1989, respectively, and the Ph.D. degree in the Electrical and Computer Engineering from University of Massachusetts
at Amherst in 1993. Between 1994 and 1996, he worked on high performance routers and ATM switches in IBM Networking System
Division, Research Triangle Park, North Carolina. Since January 1996, he has been with Computer Science Department, the Hong
Kong University of Science and Technology, where he is an associated professor and co-director for the ATM/IP cooperate research
center, a government sponsored research center. Since 1999, he has also held an adjunct researcher position at the Microsoft
Research Asia (MSRA), Beijing, China. His current research interests include wireless mobile networking supporting multimedia,
video multicast and all optical networks using WDM, in which he has published over 150 technical papers in referred journals
and conference proceedings. He has been an editor or a guest editor for 16 journals, and involved in the organization of about
40 conferences. He was the Co-TPC Chair for IEEE Infocom'2004. He is a member of ACM and a senior member of IEEE.
Krishna M. Sivalingam (ACM ‘93) is an Associate Professor in the Dept. of CSEE at University of Maryland, Baltimore County. Previously, he was
with the School of EECS at Washington State University, Pullman from 1997 until 2002; and with the University of North Carolina
Greensboro from 1994 until 1997. He has also conducted research at Lucent Technologies' Bell Labs in Murray Hill, NJ, and
at AT&T Labs in Whippany, NJ. He received his M.S. and Ph.D. degrees in Computer Science from State University of New York
at Buffalo in 1990 and 1994 respectively; and his B.E. degree in Computer Science and Engineering in 1988 from Anna University,
Chennai (Madras), India. While at SUNY Buffalo, he was a Presidential Fellow from 1988 to 1991. His research interests include
wireless networks, optical wavelength division multiplexed networks, and performance evaluation. He holds three patents in
wireless networks and has published several research articles including more than twenty-five journal publications. He has
published an edited book on Wireless Sensor Networks in 2004 and on optical networks in 2000 and in 2004. He is a member of
the Editorial Board for ACM Wireless Networks Journal, IEEE Transactions on Mobile Computing, and KICS Journal of Computer
Networks. He has served as a Guest Co-Editor for special issues of ACM MONET on “Wireless Sensor Networks” in 2003 and 2004
and an issue of IEEE Journal on Selected Areas in Communications on optical WDM networks (2000). He is co-recipient of the
Best Paper Award at the IEEE International Conference on Networks 2000 held in Singapore. His work has been supported by several
sources including AFOSR, NSF, Cisco, Intel and Laboratory for Telecommunication Sciences. He is a member of the Editorial
Board for ACM Wireless Networks Journal, IEEE Transactions on Mobile Computing, and KICS Journal of Computer Networks. He
is serving as Technical Program Co-Chair for the First IEEE Conference on Sensor Communications and Networking to be held
in Santa Clara, CA in 2004. He has served as General Co-Chair for SPIE Opticomm 2003 (Dallas, TX) and for ACM Intl. Workshop
on Wireless Sensor Networks and Applications (WSNA) 2003 held on conjunction with ACM MobiCom 2003 at San Diego, CA. He served
as Technical Program Co-Chair of SPIE/IEEE/ACM OptiComm conference at Boston, MA in July 2002; and as Workshop Co-Chair for
WSNA 2002 held in conjunction with ACM MobiCom 2002 at Atlanta, GA in Sep 2002. He is a Senior Member of IEEE and a member
of ACM.
Kazem Sohraby received the BS, MS and PhD degrees in electrical engineering and the MBA from the Wharton School, University of Pennsylvania,
Philadephia. He is a Professor of the Electrical Engineering Department, College of Engineering, University of Arkansas, Fayetteville.
Prior to that, he was with Bell Laboratories, Holmdel, NJ. His areas of interest include computer networking, signaling, switching,
performance analysis, and traffic theory. He has over 20 applications and granted patents on computer protocols, wireless
and optical systems, circuit and packet switching, and on optical Internet. He has several publications, including a book
on The Performance and Control of Computer Communications Networks (Boston, MA: 1995). Dr Sohraby is a Distinguished Lecturer
of the IEEE Communications Society, and serves as its President's representative on the Committee on Communications and Information
Policy (CCIP). He served on the Education Committee of the IEEE Communications Society, is on the Editorial Boards of several
publications, and served as Reviewer and Panelist with the National Science Foundation, the US Army and the Natural Sciences
and Engineering Research Council of Canada. 相似文献
16.
Future wired-wireless multimedia networks require diverse quality-of-service (QoS) support. To this end, it is essential to
rely on QoS metrics pertinent to wireless links. In this paper, we develop a cross-layer model for adaptive wireless links,
which enables derivation of the desired QoS metrics analytically from the typical wireless parameters across the hardware-radio
layer, the physical layer and the data link layer. We illustrate the advantages of our model: generality, simplicity, scalability
and backward compatibility. Finally, we outline its applications to power control, TCP, UDP and bandwidth scheduling in wireless
networks.
The work by Q. Liu and G. B. Giannakis are prepared through collaborative participation in the Communications and Networks
Consortium sponsored by the U.S. Army Research Laboratory under the Collaborative Technology Alliance Program, Cooperative
Agreement DAAD19-01-2-0011. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes
notwithstanding any copyright notation thereon. The work by S. Zhou is supported by UConn Research Foundation internal grant
445157.
Qingwen Liu (S’04) received the B.S. degree in electrical engineering and information science in 2001, from the University of Science
and Technology of China (USTC). He received the M.S. degree in electrical engineering in 2003, from the University of Minnesota
(UMN). He currently pursues his Ph.D. degree in the Department of Electrical and Computer Engineering at the University of
Minnesota (UMN).
His research interests lie in the areas of communications, signal processing, and networking, with emphasis on cross-layer
analysis and design, quality of service support for multimedia applications over wired-wireless networks, and resource allocation.
Shengli Zhou (M’03) received the B.S. degree in 1995 and the M.Sc. degree in 1998, from the University of Science and Technology of China
(USTC), both in electrical engineering and information science. He received his Ph.D. degree in electrical engineering from
the University of Minnesota, 2002, and joined the Department of Electrical and Computer Engineering at the University of Connecticut,
2003.
His research interests lie in the areas of communications and signal processing, including channel estimation and equalization,
multi-user and multi-carrier communications, space time coding, adaptive modulation, and cross-layer designs. He serves as
an associate editor for IEEE Transactions on Wireless Communications since Feb. 2005.
G. B. Giannakis (Fellow’97) received his Diploma in Electrical Engineering from the National Technical University of Athens, Greece, 1981.
From September 1982 to July 1986 he was with the University of Southern California (USC), where he received his MSc. in Electrical
Engineering, 1983, MSc. in Mathematics, 1986, and Ph.D. in Electrical Engineering, 1986. After lecturing for one year at USC,
he joined the University of Virginia in 1987, where he became a professor of Electrical Engineering in 1997. Since 1999 he
has been a professor with the Department of Electrical and Computer Engineering at the University of Minnesota, where he now
holds an ADC Chair in Wireless Telecommunications.
His general interests span the areas of communications and signal processing, estimation and detection theory, time-series
analysis, and system identification -- subjects on which he has published more than 200 journal papers, 350 conference papers
and two edited books. Current research focuses on transmitter and receiver diversity techniques for single- and multi-user
fading communication channels, complex-field and space-time coding, multicarrier, ultra-wide band wireless communication systems,
cross-layer designs and sensor networks.
G. B. Giannakis is the (co-) recipient of six paper awards from the IEEE Signal Processing (SP) and Communications Societies
(1992, 1998, 2000, 2001, 2003, 2004). He also received the SP Society’s Technical Achievement Award in 2000. He served as
Editor in Chief for the IEEE SP Letters, as Associate Editor for the IEEE Trans. on Signal Proc. and the IEEE SP Letters, as secretary of the SP Conference Board, as member of the SP Publications Board, as member and vice-chair of the Statistical
Signal and Array Processing Technical Committee, as chair of the SP for Communications Technical Committee and as a member
of the IEEE Fellows Election Committee. He has also served as a member of the IEEE-SP Society’s Board of Governors, the Editorial
Board for the Proceedings of the IEEE and the steering committee of the IEEE Trans. on Wireless Communications. 相似文献
17.
In order to support the diverse Quality of Service (QoS) requirements for differentiated data applications in broadband wireless
networks, advanced techniques such as space-time coding (STC) and orthogonal frequency division multiplexing (OFDM) are implemented
at the physical layer. However, the employment of such techniques evidently affects the subchannel-allocation algorithms at
the medium access control (MAC) layer. In this paper, we propose the QoS-driven cross-layer subchannel-allocation algorithms
for data transmissions over asynchronous uplink space-time OFDM-CDMA wireless networks. We mainly focus on QoS requirements
of maximizing the best-effort throughput and proportional bandwidth fairness, while minimizing the upper-bound of scheduling
delay. Our extensive simulations show that the proposed infrastructure and algorithms can achieve high bandwidth fairness
and system throughput while reducing scheduling delay over wireless networks.
Xi Zhang (S’89-SM’98) received the B.S. and M.S. degrees from Xidian University, Xi’an, China, the M.S. degree from Lehigh University,
Bethlehem, PA, all in electrical engineering and computer science, and the Ph.D. degree in electrical engineering and computer
science (Electrical Engineering—Systems) from The University of Michigan, Ann Arbor, USA.
He is currently an Assistant Professor and the Founding Director of the Networking and Information Systems Laboratory, Department
of Electrical and Computer Engineering, Texas A&M University, College Station, Texas, USA. He was an Assistant Professor and
the Founding Director of the Division of Computer Systems Engineering, Department of Electrical Engineering and Computer Science,
Beijing Information Technology Engineering Institute, Beijing, China, from 1984 to 1989. He was a Research Fellow with the
School of Electrical Engineering, University of Technology, Sydney, Australia, and the Department of Electrical and Computer
Engineering, James Cook University, Queensland, Australia, under a Fellowship from the Chinese National Commission of Education.
He worked as a Summer Intern with the Networks and Distributed Systems Research Department, Bell Laboratories, Murray Hills,
NJ, and with AT&T Laboratories Research, Florham Park, NJ, in 1997. He has published more than 80 technical papers. His current
research interests focus on the areas of wireless networks and communications, mobile computing, cross-layer designs and optimizations
for QoS guarantees over mobile wireless networks, wireless sensor and Ad Hoc networks, wireless and wireline network security,
network protocols design and modeling for QoS guarantees over multicast (and unicast) wireless (and wireline) networks, statistical
communications theory, random signal processing, and distributed computer-control systems.
Dr. Zhang received the U.S. National Science Foundation CAREER Award in 2004 for his research in the areas of mobile wireless
and multicast networking and systems. He is currently serving as an Editor for the IEEE Transactions on Wireless Communications,
an Associated Editor for the IEEE Transactions on Vehicular Technology, and and Associated Editor for the IEEE Communications
Letters, and is also currently serving as a Guest Editor for the IEEE Wireless Communications Magazine for the Special Issues
of “Next Generation of CDMA vs. OFDMA for 4G Wireless Applications”. He has served or is serving as the Panelist on the U.S.
National Science Foundation Research-Proposal Review Panel in 2004, the WiFi-Hotspots/WLAN and QoS Panelist at the IEEE QShine
2004, as the Symposium Chair for the IEEE International Cross-Layer Designs and Protocols Symposium within the IEEE International
Wireless Communications and Mobile Computing Conference (IWCMC) 2006, the Technical Program Committee Co-Chair for the IEEE
IWCMC 2006, the Poster Chair for the IEEE QShine 2006, the Publicity Co-Chair for the IEEE WirelessCom 2005, and as the Technical
Program Committee members for IEEE GLOBECOM, IEEE ICC, IEEE WCNC, IEEE VTC, IEEE QShine, IEEE WoWMoM, IEEE WirelessCom, and
IEEE EIT. He is a Senior Member of the IEEE and a member of the Association for Computing Machinery (ACM).
Jia Tang (S’03) received the B.S. degree in electrical engineering from Xi’an Jiaotong University, Xi’an, China, in 2001. He is currently
a Research Assistant working towards the Ph.D. degree in the Networking and Information Systems Laboratory, Department of
Electrical and Computer Engineering, Texas A&M University, College Station, Texas, USA. His research interests include mobile
wireless communications and networks, with emphasis on cross-layer design and optimizations, wireless quality-of-service (QoS)
provisioning for mobile multimedia networks, wireless diversity techniques, and wireless resource allocation.
Mr. Tang received the Fouraker Graduate Research Fellowship Award from the Department of Electrical and Computer Engineering,
Texas A&M University in 2005. 相似文献
18.
Multiprotocol Label Switching (MPLS) has gained momentum in recent years as an effective tool to provide Quality of Service
(QoS) in a variety of networks. This has in turn created active interest in the area of recovery in MPLS based networks. A
number of recovery schemes for MPLS domains have been proposed in recent years. However, the current schemes lack support
for recovery in dynamic network topologies. In this paper, a new flexible signaling protocol for LSP rerouting in dynamic
network environments is introduced. The signaling protocol recovers from node and link failures reactively, taking a local
approach to LSP reestablishment. The performance of the signaling protocol is evaluated through simulations. Results indicate
that the protocol can effectively and efficiently handle rerouting in dynamic networks with a low protocol signaling overhead
as compared to contemporary MPLS rerouting protocols. This would enable the MPLS based IP-QoS support mechanisms to extend
to dynamic network topologies.
A preliminary version of this work was presented at the 2004 IEEE International Conference on Communications, Paris.
Ramprasad Nagarajan has received his B.E. degree in Electronics and Telecommunications from Pune University, India in 1999. He received his M.S.
degree in Electrical and Computer Engineering from the Ohio State University, Columbus, OH in 2004. Currently, he is a Wireless
Network Engineer in Nortel Networks, specializing in the area of network architecture and design of wireless packet core networks.
Ramprasad’s current research interests include the study of wireless network evolution trends, next generation wireless networks,
network capacity planning, performance analysis, and optimization. He is a member of the IEEE.
Eylem Ekici has received his B.S. and M.S. degrees in Computer Engineering from Bogazici University, Istanbul, Turkey, in 1997 and 1998,
respectively. He received his Ph.D. degree in Electrical and Computer Engineering from Georgia Institute of Technology, Atlanta,
GA, in 2002. Currently, he is an assistant professor in the Department of Electrical and Computer Engineering of the Ohio
State University, Columbus, OH. Dr. Ekici’s current research interests include wireless sensor networks, vehicular communication
systems, next generation wireless systems, and space-based networks, with a focus on routing and medium access control protocols,
resource management, and analysis of network architectures and protocols. He also conducts research on interfacing of dissimilar
networks. 相似文献
19.
JaeSheung Shin Kyounghwan Lee Aylin Yener Thomas F. La Porta 《Mobile Networks and Applications》2006,11(4):593-611
There has been much recent attention on using wireless relay networks to forward data from mobile nodes to a base station.
This network architecture is motivated by performance improvements obtained by leveraging the highest quality links to a base
station for data transfer. With the advent of agile radios it is possible to improve the performance of relay networks through
intelligent frequency assignments. First, it is beneficial if the links of the relay network are orthogonal with respect to
each other so that simultaneous transmission on all links is possible. Second, diversity can be added to hops in the relay
network to reduce error rates. In this paper we present algorithms for forming such relay networks dynamically. The formation
algorithms support intelligent frequency assignments and diversity setup. Our results show that algorithms that order the
sequence in which nodes join a relay network carefully, achieve the highest amount of diversity and hence best performance.
This research is supported in part by NSF grant CNS-0508114.
JaeSheung Shin received the B.S. and M.S. degree in Computer Science and Engineering from DongGuk University, Korea, in 1991 and 1993, respectively.
He is currently working toward the Ph.D. degree in Computer Science and Engineering at the Pennsylvania State University,
University Park. He is a research assistant at the Networking and Security Research Center (NSRC). Prior to joining Pennsylvania
State University, he was with Electronics and Telecommunications Research Institute (ETRI), Korea, since 1993. He worked on
development of 2G and 3G wireless cellular core network elements. His research interests include mobility management and signaling
for wireless cellular and routing and resource allocation for multi-radio multi-hop wireless cellular networks.
Kyounghwan Lee received the B.S. degree in Electrical and Electronics Engineering from University of Seoul, Seoul, Korea, in 2000, and the
M.S. degree in Information and Communication Engineering from Gwangju Institute of Science and Technology, Gwangju, Korea,
in 2002. He is currently a Ph.D candidate at the Electrical Engineering department at the Pennsylvania State University and
a research assistant at the Wireless Communications and Networking Laboratory (WCAN@PSU). His research interests include wireless
communication theory and relay networks. E-mail: kxl251@psu.edu
Aylin Yener received the B.S. degrees in Electrical and Electronics Engineering, and in Physics, from Bogazici University, Istanbul,
Turkey, in 1991, and the M.S. and Ph.D. degrees in Electrical and Computer Engineering from Rutgers University, NJ, in 1994
and 2000, respectively. During her Ph.D. studies, she was with Wireless Information Network Laboratory (WINLAB) in the Department
of Electrical and Computer Engineering at Rutgers University, NJ. Between fall 2000 and fall 2001, she was with the Electrical
Engineering and Computer Science Department at Lehigh University, PA, where she was a P.C. Rossin assistant professor. Currently,
she is with the Electrical Engineering department at the Pennsylvania State University, University Park, PA, as an assistant
professor. Dr. Yener is a recipient of the NSF CAREER award in 2003. She is an associate editor of the IEEE Transactions on
Wireless Communications. Dr. Yener’s research interests include performance enhancement of multiuser systems, wireless communication
theory and wireless networking.
Thomas F. La Porta received his B.S.E.E. and M.S.E.E. degrees from The Cooper Union, New York, NY, and his Ph.D. degree in Electrical Engineering
from Columbia University, New York, NY. He joined the Computer Science and Engineering Department at Penn State in 2002 as
a Full Professor. He is the Director of the Networking Research Center at Penn State. Prior to joining Penn State, Dr. La
Porta was with Bell Laboratories since 1986. He was the Director of the Mobile Networking Research Department in Bell Laboratories,
Lucent Technologies. He is an IEEE Fellow and Bell Labs Fellow. Dr. La Porta was the founding Editor-in-Chief of the IEEE
Transactions on Mobile Computing. He has published over 50 technical papers and holds 25 patents. 相似文献
20.
A major issue in the design and operation of ad hoc networks is sharing the common spectrum among links in the same geographic
area. Bandwidth allocation, to optimize the performance of networks in which each station can converse with at most a single
neighbor at a time, has been recently studied in the context of Bluetooth Personal Area Networks. There, centralized and distributed,
capacity assignment heuristics were developed, with applicability to a variety of ad hoc networks. Yet, no guarantees on the
performance of these heuristics have been provided. In this paper, we extend these heuristics such that they can operate with
general convex objective functions. Then, we present our analytic results regarding these heuristics. Specifically, we show
that they are β-approximation (β<2) algorithms. Moreover, we show that even though the distributed and centralized algorithms
allocate capacity in a different manner, both algorithms converge to the same results. Finally, we present numerical results
that demonstrate the performance of the algorithms.
Randeep Bhatia received the Ph.D. degree in Computer Science from University of Maryland, the M.S. degree in Mathematics and Computer Science
from University of Illinois at Chicago and the B.Tech. degree in Computer Science and Engineering from Indian Institute of
Technology, Delhi. He is currently with the High Speed Networks Research Department at Bell Labs, Lucent technologies, working
on network design, traffic engineering and scheduling algorithms. His current research interests are in the area of QoS for
multimedia services in wireless data networks.
Adrian Segall received the B.Sc. and M.Sc. degrees in electrical engineering from the Technion, Israel Institute of Technology in 1965
and 1971, respectively, and the Ph.D. degree in electrical engineering with a minor in statistics from Stanford University
in 1973. After serving active duty in the Israel Defense Forces, he joined in 1968 the Scientific Department of Israel’s Ministry
of Defense. From 1973 to 1974 he was a Research Engineer at System Control Inc., Palo Alto, CA and a Lecturer at Stanford
University. From 1974 to 1976 he was an Assistant Professor of Electrical Engineering and Computer Science at the Massachusetts
Institute of Technology. From 1987 to 1998 he was on the faculty of the Department of Computer Science at the Technion. He
is presently Benjamin Professor of Computer-Communication Networks in the Department of Electrical Engineering, Technion,
Israel Institute of Technology. From 1982 to 1984 he was on leave with the IBM T.J.Watson Research Center, Yorktown Heights,
NY. He held visiting positions with IBM, AT&T and Lucent Bell Labs. His current research interests are in the area of optical
networks, wireless, sensor and ad-hoc networks. Dr. Segall is an IEEE Fellow and has served in the past as Editor for Computer
Communication Theory of the IEEE Transactions on Communications, Editor for the IEEE Information Theory Society Newsletter
and Senior Editor for the IEEE Journal on Selected Areas in Communications. He was selected as an IEEE delegate to the 1975
IEEE-USSR Information Theory Workshop, and is the recipient of the 1981 Miriam and Ray Klein Award for Outstanding Research
and of the 1990 Taub Award in Computer Science.
Gil Zussman received the B.Sc. degree in Industrial Engineering and Management and the B.A. degree in Economics (both summa cum laude) from the Technion—Israel Institute of Technology in 1995. He received the M.Sc. degree (summa cum laude) in Operations Research from Tel-Aviv University in 1999 and the Ph.D. degree in Electrical Engineering from the Technion—Israel
Institute of Technology in 2004. Between 1995 and 1998, he served as an engineer in the Israel Defense Forces. He is currently
a Postdoctoral Associate in the Laboratory for Information and Decision Systems in MIT. His current research interests are
in the area of ad hoc and sensor networks. In particular, he is interested in energy efficient protocols, medium access control
protocols, and personal area networks. Gil received the Knesset (Israeli Parliament) Award for distinguished students, the
Best Student Paper Award at the IFIP-TC6 Networking 2002 Conference, and the IEEE Communications Magazine Best Paper Award
at the OPNETWORK 2002 Conference. In 2004 he received the Marie Curie Outgoing International Fellowship and the Fulbright
Fellowship. 相似文献