18 citations · 75 across the 18 of their papers we have counts for
22 papers
Stochastic Multi-Robot Monitoring on Graphs under Markovian Mobility
Walid Ben-Ameur, Tijani Chahed, Shamisa Nematollahi
We study a stochastic multi-robot monitoring problem on a connected graph , where each robot moves according to a Markov chain on and monitors the closed neighborhood…
From Individual to Shared Ownership: A Coalitional Game Approach to Sustainable Co-investment
Yue Yu, Andrea Araldo, Tijani Chahed +1
This paper proposes a cooperative game-theoretic framework for sustainable co-investment in shared infrastructure under regulatory incentives. Multiple heterogeneous operators co-i…
Shared Infrastructure Investment and Pricing: Stackelberg Equilibria in Risk-Aware Take-or-Pay Contracts
Amal Sakr, Andrea Araldo, Tamer Başar +1
We study a shared infrastructure deployed by an Infrastructure Provider (InP) and used by multiple firms generating revenues through resource usage. We focus on a challenging setti…
Continuity of VaR and Continuous Differentiability of CVaR under Decision-Dependent Losses
Amal Sakr, Andrea Araldo, Tamer Başar +1
Value-at-risk (VaR) and conditional value-at-risk (CVaR) are widely used in risk-aware optimization and equilibrium models. When the loss depends on a decision variable, the induce…
Constrained Online Convex Optimization with Memory and Predictions
Mohammed Abdullah, George Iosifidis, Salah Eddine Elayoubi +1
We study Constrained Online Convex Optimization with Memory (COCO-M), where both the loss and the constraints depend on a finite window of past decisions made by the learner. This…
Co-Investment in Mobile Edge Computing with Infrastructure Update and Dynamic Participation
Amal Sakr, Andrea Araldo, Tijani Chahed +1
Mobile Edge Computing (MEC) requires Network Operators (NOs) to undertake substantial infrastructure investments, while most revenues are captured by Service Providers (SPs) offeri…
Co-Investment under Revenue Uncertainty Based on Stochastic Coalitional Game Theory
Amal Sakr, Andrea Araldo, Tijani Chahed +1
The introduction of new services, such as Mobile Edge Computing (MEC), requires a massive investment that cannot be assumed by a single stakeholder, for instance the Infrastructure…
Multiple Resource Allocation in Multi-Tenant Edge Computing via Sub-modular Optimization
Ayoub Ben-Ameur, Andrea Araldo, Tijani Chahed
Edge Computing (EC) allows users to access computing resources at the network frontier, which paves the way for deploying delay-sensitive applications such as Mobile Augmented Real…
Initial Access Optimization for RIS-assisted Millimeter Wave Wireless Networks
Charbel Bou Chaaya, Mohamad Assaad, Tijani Chahed
Reconfigurable Intelligent Surfaces (RIS) are considered a key enabler to achieve the vision of Smart Radio Environments, where the propagation environment can be programmed and co…
RIS-assisted Cell-Free MIMO with Dynamic Arrivals and Departures of Users: A Novel Network Stability Approach
Charbel Bou Chaaya, Mohamad Assaad, Tijani Chahed
Reconfigurable Intelligent Surfaces (RIS) have recently emerged as a hot research topic, being widely advocated as a candidate technology for next generation wireless communication…
Coalitional Game-Theoretical Approach to Coinvestment with Application to Edge Computing
Rosario Patanè, Andrea Araldo, Tijani Chahed +2
We propose in this paper a coinvestment plan between several stakeholders of different types, namely a physical network owner, operating network nodes, e.g. a network operator or a…
Cache Allocation in Multi-Tenant Edge Computing via online Reinforcement Learning
Ayoub Ben-Ameur, Andrea Araldo, Tijani Chahed
We consider in this work Edge Computing (EC) in a multi-tenant environment: the resource owner, i.e., the Network Operator (NO), virtualizes the resources and lets third party Serv…
Optimal Policies of Advanced Sleep Modes for Energy-Efficient 5G networks
Fatma Ezzahra Salem, Tijani Chahed, Eitan Altman +2
We study in this paper optimal control strategy for Advanced Sleep Modes (ASM) in 5G networks. ASM correspond to different levels of sleep modes ranging from deactivation of some c…
A Two Phase Investment Game for Competitive Opinion Dynamics in Social Networks
Swapnil Dhamal, Walid Ben-Ameur, Tijani Chahed +1
We propose a setting for two-phase opinion dynamics in social networks, where a node's final opinion in the first phase acts as its initial biased opinion in the second phase. In t…
A Stochastic Game Framework for Analyzing Computational Investment Strategies in Distributed Computing
Swapnil Dhamal, Walid Ben-Ameur, Tijani Chahed +3
We study a stochastic game framework with dynamic set of players, for modeling and analyzing their computational investment strategies in distributed computing. Players obtain a ce…
Optimal Multiphase Investment Strategies for Influencing Opinions in a Social Network
Swapnil Dhamal, Walid Ben-Ameur, Tijani Chahed +1
We study the problem of optimally investing in nodes of a social network in a competitive setting, where two camps aim to maximize adoption of their opinions by the population. In…
Optimal Investment Strategies for Competing Camps in a Social Network: A Broad Framework
Swapnil Dhamal, Walid Ben-Ameur, Tijani Chahed +1
We study the problem of optimally investing in nodes of a social network in a competitive setting, wherein two camps aim to drive the average opinion of the population in their own…
Offloading traffic hotspots using moving small cells
Aymen Jaziri, Ridha Nasri, Tijani Chahed
In this paper, the concept of moving small cells in mobile networks is presented and evaluated taking into account the dynamics of the system. We consider a small cell moving accor…
Performance Analysis of Small Cells' Deployment under Imperfect Traffic Hotspot Localization
Aymen Jaziri, Ridha Nasri, Tijani Chahed
Heterogeneous Networks (HetNets), long been considered in operators' roadmaps for macrocells' network improvements, still continue to attract interest for 5G network deployments. U…
System level analysis of heterogeneous networks under imperfect traffic hotspot localization
Aymen Jaziri, Ridha Nasri, Tijani Chahed
We study, in this paper, the impact of imperfect small cell positioning with respect to traffic hotspots in cellular networks. In order to derive the throughput distribution in mac…
A New Alternative for Traffic Hotspot Localization in Wireless Networks Using O&M Metrics
Aymen Jaziri, Ridha Nasri, Tijani Chahed
In recent years, there has been an increasing awareness to traffic localization techniques driven by the problematic of hotspot offloading solutions, the emergence of heterogeneous…
Traffic Hotspot localization in 3G and 4G wireless networks using OMC metrics
Aymen Jaziri, Ridha Nasri, Tijani Chahed
In recent years, there has been an increasing awareness to traffic localization techniques driven by the emergence of heterogeneous networks (HetNet) with small cells deployment an…