Publications by Olivier Dousse

Opportunistic Sampling for Joint Population Size and Density Estimation

Martin Vetterli, Patrick Thiran, Olivier Dousse, Farid Movahedi Naini

Consider a set of probes, called “agents”, who sample, based on opportunistic contacts, a population moving between a set of discrete locations. An example of such agents are Bluetooth probes that sample the visible Bluetooth devices in a population. Based ...

2015

, , ,

This paper presents an overview of the Mobile Data Challenge (MDC), a large-scale research initiative aimed at generating innovations around smartphone-based research, as well as community-based evaluation of mobile data analysis methodologies. First, we r ...

Elsevier Science Bv2013

Models of 802.11 Multi-Hop Networks: Theoretical Insights and Experimental Validation

Patrick Thiran, Olivier Dousse, Adel Aziz, Mathilde Durvy

Wireless Multi-Hop CSMA/CA Networks are challenging to analyze. On the one hand, their dynamics are complex and rather subtle effects may severely affect their performance. Yet, understanding these effects is critical to operate upper layer protocols, such ...

2011

Population Size Estimation Using a Few Individuals as Agents

Martin Vetterli, Patrick Thiran, Olivier Dousse, Farid Movahedi Naini

We conduct an experiment where ten attendees of an open-air music festival are acting as Bluetooth probes. We then construct a parametric statistical model to estimate the total number of visible Bluetooth devices in the festival area. By comparing our est ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

, ,

We show that CSMA is able to spontaneously synchronize transmissions in a wireless network with constant-size packets, and that this property can be used to devise efficient synchronized CSMA scheduling mechanisms without message passing. Using tools from ...

2010

Self-Organization Properties of CSMA/CA Systems and Their Consequences on Fairness

Patrick Thiran, Olivier Dousse, Mathilde Durvy

Decentralized medium access control schemes for wireless networks based on CSMA/CA, such as the IEEE 802.11 protocol, are known to be unfair. In multihop networks, they can even favor some links to such an extent that the others suffer from virtually compl ...

Institute of Electrical and Electronics Engineers2009

On the Fairness of Large CSMA Networks

Patrick Thiran, Olivier Dousse, Mathilde Durvy

We characterize the fairness of decentralized medium access control protocols based on CSMA/CA, such as IEEE 802.11, in large multi-hop wireless networks. In particular, we show that the widely observed unfairness of the protocol in small network topologie ...

Institute of Electrical and Electronics Engineers2009

Border effects, fairness, and phase transition in large wireless networks

Patrick Thiran, Olivier Dousse, Mathilde Durvy

We characterize the fairness of decentralized medium access control protocols based on CSMA/CA, such as IEEE 802.11, in large multi-hop wireless networks. In particular, we show that the widely observed unfairness of the protocol in small network topologie ...

IEEE Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2008

, , ,

Vehicular Ad Hoc Networks (VANETs) are a peculiar subclass of mobile ad hoc networks that raise a number of technical challenges, notably from the point of view of their mobility models. In this paper, we provide a thorough analysis of the connectivity of ...

2008

Modeling the 802.11 protocol under different capture and sensing capabilities

Patrick Thiran, Olivier Dousse, Mathilde Durvy

Decentralized medium access control schemes for wireless networks based on CSMA/CA, such as the 802.11 protocol, are known to be unfair. In multi-hop networks, they can even favor some connections to such an extent that the others suffer from virtually com ...

2007

Olivier Dousse

Graph Chatbot

Chat with Graph Search

Opportunistic Sampling for Joint Population Size and Density Estimation

Models of 802.11 Multi-Hop Networks: Theoretical Insights and Experimental Validation

Population Size Estimation Using a Few Individuals as Agents

Self-Organization Properties of CSMA/CA Systems and Their Consequences on Fairness

On the Fairness of Large CSMA Networks

Border effects, fairness, and phase transition in large wireless networks

Modeling the 802.11 protocol under different capture and sensing capabilities

Opportunistic Sampling for Joint Population Size and Density Estimation

Models of 802.11 Multi-Hop Networks: Theoretical Insights and Experimental Validation

Modeling the 802.11 protocol under different capture and sensing capabilities

Border effects, fairness, and phase transition in large wireless networks

Population Size Estimation Using a Few Individuals as Agents

Self-Organization Properties of CSMA/CA Systems and Their Consequences on Fairness

On the Fairness of Large CSMA Networks