Concept

Voice over IP

Related publications (183)

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Failure Location in WDM Networks

Patrick Thiran, Xuan Hung Nguyen, Carmen Mas

Fault identification and location in optical networks must cope with a multitude of factors: (i) the redundancy and the lack of coordination (internetworking) of the managements at the different layers (WDM, SDH/SONET, ATM, IP) ...

Springer2005

Deux applications de processus ponctuels aux réseaux de communication

Patrick Thiran, Olivier Dousse, Xuan Hung Nguyen

This paper (in Frensh) summarizes recent results obtained by using shot noise processes for two applications in communication networks: first, TCP/IP traffic models for backbone networks; and next the study of connectivity under rate constraints in wireles ...

2005

Energy efficient medium access control for wireless sensor networks

A wireless sensor network designates a system composed of numerous sensor nodes distributed over an area in order to collect information. The sensor nodes communicate wirelessly with each other in order to self-organize into a multi-hop network, collaborat ...

EPFL2005

Reputation-based Wi-Fi Deployment

Jean-Pierre Hubaux, Naouel Ben Salem

Wi-Fi networks have a very strong potential: They are easy to deploy, they use unlicensed frequencies and they provide Internet connectivity that is several times faster than by cable modem. However, two major problems still need to be solved: the lack of ...

2005

Exploring the performance effects of Internetworking

Christopher Tucci

Extant theory presents two explanations as to how IT inputs might affect firm performance: direct or indirect associations between IT inputs and overall economic performance are proposed. A survey of 550 firms indicates that in the case of internetworking ...

2005

Active measurement for multiple link failure diganosis in IP networks

Patrick Thiran, Xuan Hung Nguyen

Simultaneous link failures are common in IP networks \cite{Markopoulou04}. In this paper, we develop a technique for locating multiple failures in Service Provider or Enterprise IP networks using active measurement. We propose a two-phased approach that mi ...

2004

Scalability in adaptive multi-metric overlays

Dejan Kostic

Increasing application requirements have placed heavy emphasis on building overlay networks to efficiently deliver data to multiple receivers. A key performance challenge is simultaneously achieving adaptivity to changing network conditions and scalability ...

IEEE Comput. Soc2004

Fault-Tolerant Real-Time Streaming with FEC thanks to Capillary Multi-Path Routing

Emin Gabrielyan

Erasure resilient FEC codes in off-line packetized streaming rely on time diversity. This requires unrestricted buffering time at the receiver. In real-time streaming the playback buffering time must be very short. Path diversity is an orthogonal strategy. ...

2004

Poster: Contention-based distance-vector routing for mobile ad-hoc networks

Jörg Widmer

Position-based routing protocols forward packets in a greedy manner from source to destination without having to maintain routes through the network. Contention-based routing strategies improve upon position-based routing in that they do not even require t ...

2004

End-to-end congestion control for tcp-friendly flows with variable packet size

Jean-Yves Le Boudec, Jörg Widmer, Catherine Boutremans

Current TCP-friendly congestion control mechanisms adjust the packet rate in order to adapt to network conditions and obtain a throughput not exceeding that of a TCP connection operating under the same conditions. In an environment where the bottleneck res ...

2004