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Greening the Last Mile Access

Speaker: Nirwan Ansari
New Jersey Institute of Technology

March 26, 2015 - 4:00 p.m. to 5:00 p.m.
Location: Amos Eaton 214
Hosted By: Dr. Bulent Yener (x6907)


Provisioning a myriad of emerging bandwidth-hungry applications and services is exacerbating bandwidth demand across networking infrastructure, notably the access (last mile) portion, as well as revving up energy consumption in this humongous infrastructure, and thus fueling continuous surge of carbon footprints. Reducing carbon footprints is crucial in alleviating the direct impact of greenhouse gases on the earth environment and the climate change. In the future high capacity access networks, the wireline access part will be made up of fiber-to-the-home or hybrid fiber-to-the-node (FTTN), and the wireless part will be provisioned by various advanced technologies, such as advanced antenna techniques, heterogeneous networks with mixed high/low power base stations deployment, and cooperative communications. Greening such high capacity access networks is a great challenge of the coming decade. To tackle the challenge, we advocate and introduce the "capacity-adaptive" feature into the envisioned network to help decrease the network energy consumption. While many applications at end users are bandwidth demanding, end users may not run these applications all the time. Thus, a significant amount of energy and resources have been wasted by provisioning the same high data rate to end users all the time. Taking advantage of the bursty and dynamic nature of the access network traffic, we propose a capacity-adaptive green access network which reduces the network energy consumption by switching from the "high-capacity high-power" mode into the "low-capacity low-power" mode when the network is lightly loaded.


Professor Nirwan Ansari received BSEE (summa cum laude with a perfect GPA) from the New Jersey Institute of Technology (NJIT), MSEE from the University of Michigan, Ann Arbor, and PhD from Purdue University, West Lafayette, IN. He is Distinguished Professor of Electrical and Computer Engineering at NJIT, where he joined in 1988. He has also assumed various administrative positions at NJIT. He has been Visiting (Chair) Professor at several universities including as High-level Visiting Scientist of 111 Base at Beijing University of Posts and Telecommunications.
Prof. Ansari authored Media Access Control and Resource Allocation (Springer, 2013) with J. Zhang and Computational Intelligence for Optimization (Springer, 1997) with E.S.H. Hou, and edited Neural Networks in Telecommunications (Springer, 1994) with B. Yuhas. He has also (co-)authored over 450 technical papers, over one third of which were published in widely cited refereed journals/magazines. He has guest-edited a number of special issues, covering various emerging topics in communications and networking. His current research focuses on green communications and networking, cloud computing, and various aspects of broadband networks.
Prof. Ansari has served on the Editorial Board and Advisory Board of ten journals, including as a Senior Technical Editor of IEEE Communications Magazine (2006-2009). He was elected to serve in the IEEE Communications Society (ComSoc) Board of Governors as a member-at-large (2013-2015). He has chaired ComSoc technical committees, and has been actively organizing numerous IEEE International Conferences/Symposia/Workshops, assuming various leadership roles. He frequently delivers keynote addresses, distinguished lectures, tutorials, and invited talks. Some of his recognitions include IEEE Fellow (Class of 2009), several Excellence in Teaching Awards, a couple of best paper awards, NCE Excellence in Research Award (2014), ComSoc AHSN TC Outstanding Service Recognition Award (2013), NJ Inventors Hall of Fame Inventor of the Year Award (2012), Thomas Alva Edison Patent Award (2010), and designation as an IEEE Communications Society Distinguished Lecturer (2006-2009). He has also been granted over twenty-five US patents.

Last updated: March 17, 2015