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 freshness is crucial for time-critical IoT applications, eg, monitoring and control.
We consider an IoT status update system with users, energy harvesting sensors, and a …

We consider a resource-constrained IoT network, where multiple users make on-demand
requests to a cache-enabled edge node to send status updates about various random …

A novel status update information system is designed by jointly considering wireless energy
harvesting diversity, status update transmission diversity, and hybrid automatic repeat …

We consider a resource-constrained IoT network, where users make on-demand requests to
a cache-enabled edge node to send status updates about various random processes, each …

Caching the high definition map (HDM) on the edge network can significantly alleviate
energy consumption of the roadside sensors frequently conducting the operators of the …

In status update systems, multiple features carried by the status updating process require
pursuit of objectives beyond timeliness measured by the age of information of updates. We …

Herein, minimization of time-averaged age-of-information (AoI) in an energy harvesting (EH)
source setting is considered. The EH source opportunistically samples one or multiple …

The age of information (AoI) has attracted increasing attentions as a new metric and tool to
capture the timeliness of reception and freshness of data, which is different from the …

It is critical to reach a balance between information freshness and energy consumption in
energy-limited Internet of Things networks. In this paper, we consider that the update …