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 …

In this paper, we introduce a new performance metric in the framework of status updates that
we will refer to as the Age of Incorrect Information (AoII). This new metric deals with the …

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 …

In this paper, we investigate a network where N links contend for the channel using the well-
known carrier sense multiple access scheme. By leveraging the notion of stochastic hybrid …

This paper investigates the probability that the delay and the peak-age of information
exceed a desired threshold in a point-to-point communication system with short information …

In this paper, we examine the potentials of Non-Orthogonal Multiple Access (NOMA),
currently rivaling Orthogonal Multiple Access (OMA) in 3rd Generation Partnership Project …

Multiple sources submit updates to a monitor through an M/M/1 queue. A stochastic hybrid
system (SHS) approach is used to derive the average age of information (AoI) for an …

A large body of applications that involve monitoring, decision making, and forecasting
require timely status updates for their efficient operation. Age of Information (AoI) is a newly …