16 citations · 78 across the 41 of their papers we have counts for
15 papers · 1 filter
Age of Information in Locally Adaptive Frame Slotted ALOHA
Zhiling Yue, Howard H. Yang, Meng Zhang +1
We consider a random access network consisting of source-destination pairs. Each source node generates status updates and transmits this information to its intended destination ove…
Goal-oriented Policies for Cost of Actuation Error Minimization in Wireless Autonomous Systems
Emmanouil Fountoulakis, Nikolaos Pappas, Marios Kountouris
We consider the minimization of the cost of actuation error under resource constraints for real-time tracking in wireless autonomous systems. A transmitter monitors the state of a…
Semantics-Aware Active Fault Detection in Status Updating Systems
George Stamatakis, Nikolaos Pappas, Alexandros Fragkiadakis +1
With its growing number of deployed devices and applications, the Internet of Things (IoT) raises significant challenges for network maintenance procedures. In this work we address…
Scheduling Policies for AoI Minimization with Timely Throughput Constraints
Emmanouil Fountoulakis, Themistoklis Charalambous, Anthony Ephremides +1
In 5G and beyond communication systems, the notion of latency gets great momentum in wireless connectivity as a metric for serving real-time communications requirements. However, i…
Joint Sampling and Transmission Policies for Minimizing Cost under AoI Constraints
Emmanouil Fountoulakis, Marian Codreanu, Anthony Ephremides +1
In this work, we consider the problem of jointly minimizing the average cost of sampling and transmitting status updates by users over a wireless channel subject to average Age of…
Autonomous Maintenance in IoT Networks via AoI-driven Deep Reinforcement Learning
George Stamatakis, Nikolaos Pappas, Alexandros Fragkiadakis +1
Internet of Things (IoT) with its growing number of deployed devices and applications raises significant challenges for network maintenance procedures. In this work, we formulate a…
QoS Aware Robot Trajectory Optimization with IRS-Assisted Millimeter-Wave Communications
Cristian Tatino, Nikolaos Pappas, Di Yuan
In this paper, we consider the motion energy minimization problem for a robot that uses millimeter-wave (mm-wave) communications assisted by an intelligent reflective surface (IRS)…
Dynamic Power Control for Time-Critical Networking with Heterogeneous Traffic
Emmanouil Fountoulakis, Nikolaos Pappas, Anthony Ephremides
Future wireless networks will be characterized by heterogeneous traffic requirements. Such requirements can be low-latency or minimum-throughput. Therefore, the network has to adju…
Robot Trajectory Planning With QoS Constrained IRS-assisted Millimeter-Wave Communications
Cristian Tatino, Nikolaos Pappas, Di Yuan
This paper considers the joint optimization of trajectory and beamforming of a wirelessly connected robot using intelligent reflective surface (IRS)-assisted millimeter-wave (mm-wa…
Information Freshness and Packet Drop Rate Interplay in a Two-User Multi-Access Channel
Emmanouil Fountoulakis, Themistoklis Charalambous, Nikolaos Nomikos +2
In this work, we combine the two notions of timely delivery of information in order to study their interplay; namely, deadline-constrained packet delivery due to latency constraint…
Multi-Robot Association-Path Planning in Millimeter-Wave Industrial Scenarios
Cristian Tatino, Nikolaos Pappas, Di Yuan
The massive exploitation of robots for industry 4.0 needs advanced wireless solutions that replace less flexible and more costly wired networks. In this regard, millimeter-waves (m…
Optimal Sampling Cost in Wireless Networks with Age of Information Constraints
Emmanouil Fountoulakis, Nikolaos Pappas, Marian Codreanu +1
We consider the problem of minimizing the time average cost of sampling and transmitting status updates by users over a wireless channel subject to average Age of Information const…
Cacheable and Non-Cacheable Traffic Interplay in a Relay-Assisted Wireless Network
Ioannis Avgouleas, Nikolaos Pappas, Vangelis Angelakis
We study a discrete-time wireless network that serves both cacheable and non-cacheable traffic with assistance of a relay node with storage capabilities for both types of traffic.…
UAV Trajectory Optimization for Time Constrained Applications
Emmanouil Fountoulakis, Georgios S. Paschos, Nikolaos Pappas
Unmanned Aerial Vehicles (UAVs) are poised to revolutionize communications. Utilizing their flexibility and fast deployment, we can deliver content in congested areas or provide se…
The Age of Information in a Discrete Time Queue: Stationary Distribution and Non-linear Age Mean Analysis
Antzela Kosta, Nikolaos Pappas, Anthony Ephremides +1
In this work, we investigate information freshness in a status update communication system consisting of a source-destination link. Initially, we study the properties of a sample p…