Publications de Alaeddine El Fawal

Empirical Performance Evaluation of Data Dissemination Mechanisms for Spot Applications

Jean-Yves Le Boudec, Alaeddine El Fawal, Adel Aziz

We evaluate, by measurements on a real testbed, the performance of networking services required for spot applications. We call a “spot application” an application for smartphones (such as “Ad-hoc Flash Sales”) that disseminates information in a local neigh ...

2012

On uncoordinated wireless ad-hoc networks : data dissemination over WIFI and cross-layer optimization for ultra wide band impulse radio

Alaeddine El Fawal

Emerging pervasive wireless networks, pocket switched networks, Internet of things, vehicular networks and even sensor networks present very challenging communication circumstances. They might involve up to several hundreds of wireless devices with mobilit ...

EPFL2009

EZ-Flow: Removing Turbulence in IEEE 802.11 Wireless Mesh Networks without Message Passing

Patrick Thiran, Alaeddine El Fawal, Adel Aziz, David Starobinski

Recent analytical and experimental work demonstrate that IEEE 802.11-based wireless mesh networks are prone to turbulence. Manifestations of such turbulence take the form of large buffer build-up at relay nodes, end-to-end delay fluctuations, and traffic c ...

2009

Vulnerabilities in Epidemic Forwarding

Jean-Yves Le Boudec, Alaeddine El Fawal

We identify vulnerabilities in epidemic forwarding. We address broadcast applications over wireless ad-hoc networks. Epidemic forwarding employs several mechanisms such as inhibition and spread control, and each of them can be implemented using alternative ...

2007

Multi-hop Broadcast from Theory to Reality: Practical Design for Ad Hoc Networks

Jean-Yves Le Boudec, Alaeddine El Fawal

We propose a complete design for a scope limited, multi-hop broadcast middleware, which is adapted to the variability of the ad-hoc environment and works in unlimited ad-hoc networks such as a crowd in a city, or car passengers in a busy highway system. We ...

2007

DOMINO: Detecting MAC layer greedy behavior in IEEE 802.11 hotspots

Jean-Pierre Hubaux, Alaeddine El Fawal, Imad Aad, Maxime Raya

IEEE 802.11 works properly only if the stations respect the MAC protocol. We show in this paper that a greedy user can substantially increase his share of bandwidth, at the expense of the other users, by slightly modifying the driver of his network adapter ...

2006

The Optimal MAC Layer for Low-Power UWB is Non-Coordinated

Jean-Yves Le Boudec, Alaeddine El Fawal, Ruben Merz, Jörg Widmer

We consider the design of the MAC layer for low power, low data-rate, impulse-radio ultra-wide band (IR-UWB) networks. In such networks, the primary concern is energy consumption rather than rate efficiency. We explore several dimensions such as power cont ...

2006

A Robust Signal Detection Method for Ultra Wide Band (UWB) Networks with Uncontrolled Interference

Jean-Yves Le Boudec, Alaeddine El Fawal

We propose a novel detection method for non-coherent synchronization (signal acquisition) in multi-user UWB impulse radio (IR) networks. It is designed to solve the IUI (Inter-User Interference) that occurs in some ad-hoc networks where concurrent transmis ...

Institute of Electrical and Electronics Engineers2006

Synchronizing Method for Impulse Radio Network

Jean-Yves Le Boudec, Alaeddine El Fawal

In IR (Impulse Radio) network, the conventional synchronization (also called signal acquisition) method becomes inefficient and results in a certain failure of synchronization when concurrent transmissions are allowed without controlling their powers. The ...

2005

Tradeoff Analysis of PHY-aware MAC in Low-Rate, Low-Power UWB networks

Jean-Yves Le Boudec, Alaeddine El Fawal, Ruben Merz, Jörg Widmer

We are interested in the design of physical-layer aware medium access control (PHY-aware MAC) for self-organized, low power, low data-rate impulse-radio ultra-wideband (IR-UWB) networks. In such networks, energy consumption is much more of a concern than a ...

2005