We summarize recent contributions in the broad area of age of information (AoI). In
particular, we describe the current state of the art in the design and optimization of low …

Information usually has the highest value when it is fresh. For example, real-time knowledge
about the location, orientation, and speed of motor vehicles is imperative in autonomous …

We examine multiple independent sources providing status updates to a monitor through
simple queues. We formulate an age of information (AoI) timeliness metric and derive a …

A source provides status updates to monitors through a network with state defined by a
continuous-time finite Markov chain. An age of information (AoI) metric is used to …

We consider a system consisting of N source nodes communicating with a common receiver.
Each source node has a buffer of infinite capacity to store incoming bursty traffic in the form …

This paper investigates the age of information in a single-source status update system with
energy constraints. Specifically, a source provides status updates to a destination through a …

In this article, we consider the multicast transmission of a real-time Internet-of-Things (IoT)
system, where an access point (AP) transmits timestamped status updates to multiple IoT …

This paper analyzes the age of information in a single-source status update system with
energy constraints. Specifically, a source provides status updates to a destination through a …

This paper studies the “age of information” in a general multi-source multi-hop wireless
network with explicit channel contention. Specifically, the scenario considered in this paper …

This paper studies a multi-source “age of information” problem in multi-hop wireless
networks with packetized status updates and explicit channel contention. Specifically, the …