We summarize recent contributions in the broad area of age information (AoI). In particular, we describe current state art design and optimization low-latency cyberphysical systems applications which sources send time-stamped status updates to interested recipients. These desire at recipients be as timely possible; however, this is typically constrained by limited system resources. AoI timeline...

In this letter, we consider the requirement of information freshness in covert communications for first time. With artificial noise (AN) generated from a full-duplex (FD) receiver, formulate covertness maximization problem under average age (AoI) constraint to optimize transmit probability signal. particular, not only represents generation rate signal but also prior alternative hypothesis commu...