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Dr. Yin Sun, Assistant Professor in the Department of Electrical and Computer Engineering at Auburn University, Alabama

Age of Information: Optimizing the Freshness of Real-Time Data

Abstract:  Information usually has the greatest value when it is fresh. For example, real-time knowledge about the location, orientation, and speed of vehicles is imperative in autonomous driving and navigation, and the access to timely updates about the stock price and interest-rate movements is essential for developing trading strategies. The concept of Age of Information was introduced in 2011 to measure the freshness of the information that we have about the status of a remote system. More specifically, the age is the time elapsed since the generation of the latest received message that describes the source status, and our goal is to minimize the age and keep the received data fresh. 

In this talk, we will introduce our recent research on the Age of Information along two directions: In one direction, we optimize the sampling strategies at the remote source node to improve the freshness of information at the receiving end. In the other direction, we develop optimal scheduling strategies to minimize the age in a few network settings involving multiple sources, multiple channels, multiple hops, and/or multiple destinations. Some of these studies provide a perspective on how information ages over time and its connections with Information Theory and Signal Processing. Several future research directions will be discussed in the end. 

Bio:  Yin Sun is an Assistant Professor in the Department of Electrical and Computer Engineering at Auburn University, Alabama. He received his B. Eng. and Ph.D. degrees in electronic engineering from Tsinghua University, Beijing, China, in 2006 and 2011, respectively, and received the Excellent Doctoral Thesis Award of Tsinghua University. He was a postdoctoral scholar at the Ohio State University during 2011-2014, and a research associate at the Ohio State University during 2014-2017. His research interests include wireless communications, communication networks, information status updates, and machine learning. The paper that he co-authored received the Best Student Paper Award at IEEE WiOpt conference 2013. He is the founding co-chair of the First Workshop on the Age of Information.

Hosting Faculty:  Dr. Lei Yang

Friday, October 12, 2018 at 11:00am to 12:00pm

Scrugham Engineering and Mines, 234

Event Type

Lectures and Seminars


College of Engineering, Computer Science and Engineering, Cyber Security Center




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