1 citations · 2 across the 11 of their papers we have counts for
12 papers
When Fresh Information Is Not Enough: Age-of-Actuation-Optimal Scheduling for Energy-Harvesting Actuators
Ali Nikkhah, Anthony Ephremides, Nikolaos Pappas
We study transmission scheduling in an energy-harvesting actuation system where an actuation requires both a received update and available energy. While age of information (AoI) me…
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…
Optimizing Version Innovation Age for Monitoring Markovian Source in Energy-Harvesting Systems
Mehrdad Salimnejad, Anthony Ephremides, Marios Kountouris +1
We study the real-time remote tracking of a two-state Markov process by an energy harvesting source. The source decides whether to transmit over an unreliable channel based on the…
Age of Information Versions: a Semantic View of Markov Source Monitoring
Mehrdad Salimnejad, Marios Kountouris, Anthony Ephremides +1
We consider the problem of real-time remote monitoring of a two-state Markov process, where a sensor observes the state of the source and makes a decision on whether to transmit th…
Version Innovation Age and Age of Incorrect Version for Monitoring Markovian Sources
Mehrdad Salimnejad, Marios Kountouris, Anthony Ephremides +1
In this paper, we propose two new performance metrics, coined the Version Innovation Age (VIA) and the Age of Incorrect Version (AoIV) for real-time monitoring of a two-state Marko…
Age of Actuated Information and Age of Actuation in a Data-Caching Energy Harvesting Actuator
Ali Nikkhah, Anthony Ephremides, Nikolaos Pappas
In this paper, we introduce two metrics, namely, age of actuation (AoA) and age of actuated information (AoAI), within a discrete-time system model that integrates data caching and…
Age of Actuation and Timeliness: Semantics in a Wireless Power Transfer System
Ali Nikkhah, Anthony Ephremides, Nikolaos Pappas
In this paper, we investigate a model relevant to semantics-aware goal-oriented communications, and we propose a new metric that incorporates the utilization of information in addi…