Clark School Home UMD
ECE

ECE News Story

Ephremides is PI for new ONR 'age of information' grant

Ephremides is PI for new ONR 'age of information' grant


Anthony Ephremides (ECE/ISR) is the principal investigator for a new three-year, $300,000 research grant from the Office of Naval Research. “AGE OF INFORMATION: Concept, Metric, and Tool for Network Control” will focus on the use of age for wireless network control. Dr. Ephremides is Distinguished University Professor and Cynthia Kim Eminent Professor of Information Technology.

The concept of “age” of updates has emerged as a new idea, a new performance index, and a new tool in the field of Information Science. Its simplicity, novelty, and far-reaching potential have generated rapidly growing interest in several research communities. Some of the seminal work on the subject, following its introduction by R. Yates in 2012, has been done by Dr. Ephremides and his colleagues.

Initially, the notion of “age” was defined in the context of monitoring an ongoing process at a communication source. The source sampled the process at arbitrary instants and transmitted the measured values over a finite-bandwidth (hence, delay inducing) medium to a destination. Each sample constituted an “update” of the value of the process. Age was defined as the difference between the current time t and the sampling time u(t) of the most recently received sample at the destination by the time instant t. This difference, t-u(t), would grow with time linearly until a new update would be received.

The new research will expand the use of age in a number of ways that will enable it to be applied to network control, mostly in the challenging environments of wireless media that are encountered primarily in naval systems. A key ingredient of the new approach will be to use this concept both as a performance metric and as a tool.

In addition to its impact on wireless network control for naval systems, the research may lead to fundamental breakthroughs in the Science of Information.

 

Related Articles:
Ephremides speaks at Princeton EE commencement event
Ephremides and colleagues issued U.S. Patent 9,318,232
Alumnus Tassiulas Wins 2016 IEEE Kobayashi Award
NSF Funds Novel Research to Create Scalable Wireless Networking, Averting Usage Crisis
Hafezi Named 2015 ONR Young Investigator
Ephremides receives NSF grant to bridge wireless network theories
Ephremides Wins IEEE MILCOM Lifetime Acheivement Award
Anyone have recipes for blue marlin?
What a haul!
Ephremides, Rong issued patent for cooperative transmission in wireless networks

November 30, 2017


Prev   Next

Current Headlines

University of Maryland School of Engineering Announces Unprecedented Investment from A. James & Alice B. Clark Foundation

Alumni Profile: Paul Gaske

Clark School Honors Distinguished Members of Engineering Community

Alumnus Profile: Bikash Koley

Leite Research Group’s Invited Review Published in ACS Energy

Ephremides is PI for new ONR 'age of information' grant

UMD Hosts Third Technica with over 800 Students from Around the Country

Srivastava Named Clark School Inaugural Associate Dean for Graduate Affairs

News Resources

Return to Newsroom

Search News

Archived News

Events Resources

Events Calendar

Additional Resources

UM Newsdesk

Faculty Experts