7 papers
Optimal Sampling and Actuation for Real-Time Monitoring of Markov Sources
Mehrdad Salimnejad, Anthony Ephremides, Marios Kountouris +1
This paper studies efficient data management and timely information dissemination for real-time monitoring of an N-state Markov process, with the objective of enabling accurate sta…
Semantics in Actuation Systems: From Age of Actuation to Age of Actuated Information
Ali Nikkhah, Anthony Ephremides, Nikolaos Pappas
In this paper, we study the timeliness of actions in communication systems where actuation is constrained by control permissions or energy availability. Building on the Age of Actu…
Real-Time Remote Monitoring of Correlated Markovian Sources
Mehrdad Salimnejad, Marios Kountouris, Nikolaos Pappas
We investigate real-time tracking of two correlated stochastic processes over a shared wireless channel. The joint evolution of the processes is modeled as a two-dimensional discre…
Age of Information-Aware Cognitive Shared Access Networks with Energy Harvesting
Georgios Smpokos, Dionysis Xenakis, Marios Kountouris +1
This study investigates a cognitive shared access network with energy harvesting capabilities operating under Age of Information (AoI) constraints for the primary user. Secondary t…
Pull-Based Query Scheduling for Goal-Oriented Semantic Communication
Pouya Agheli, Nikolaos Pappas, Marios Kountouris
This paper addresses query scheduling for goal-oriented semantic communication in pull-based status update systems. We consider a system where multiple sensing agents (SAs) observe…
So Timely, Yet So Stale: The Impact of Clock Drift in Real-Time Systems
Mehrdad Salimnejad, Nikolaos Pappas, Marios Kountouris
In this paper, we address the problem of timely delivery of status update packets in a real-time communication system, where a transmitter sends status updates generated by a sourc…