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 …

In the upcoming 5G and beyond systems, ultra-reliable and low latency communication
(URLLC) has been considered as the key enabler to support diverse mission-critical …

Age of information (AoI) was introduced in the early 2010s as a notion to characterize the
freshness of the knowledge a system has about a process observed remotely. AoI was …

In this paper, we consider a wireless broadcast network with a base station sending time-
sensitive information to a number of clients through unreliable channels. The Age of …

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 …

In this paper, we study how to optimally manage the freshness of information updates sent
from a source node to a destination via a channel. A proper metric for data freshness at the …

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 consider a scenario where an energy harvesting sensor continuously
monitors a system and sends time-stamped status updates to a destination. The destination …

An energy-harvesting sensor node that is sending status updates to a destination is
considered. The sensor is equipped with a battery of finite size to save its incoming energy …

Age of Information (AoI) is a performance metric that captures the freshness of the
information from the perspective of the destination. The AoI measures the time that elapsed …