Recently a simple concept was identified in the fields of communications, networking, and computer science, that has become known as “Age of Information” or “Age of Information Updates”. It concerns an ongoing process that is sampled at different times and the sampled values transmitted through a system to a receiver. The difference between the current time and the time the most recently received sample was generated is called the “age” of information at the receiver.
There has been a truly explosive rise in the interest of the community in this concept as it has intriguing theoretical implications and numerous applications. In this talk I will introduce this concept and will review some of the many recent studies that deal with it.