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Architecture à qualité de service pour systèmes satellites DVB-S/RCS dans un contexte NGN

Abstract : This thesis deals with the integration of geostationary access satellite networks in the NGN (Next Generation Network) infrastructure, a global QoS-enabled communication network based on IP. The first part depicts this multiservice ubiquitous infrastructure anchored on a clean separation between a transport/network domain and a service/application domain. Then a unified NGN control and management architecture, mainly inspired by the past and current IP QoS architectures, is proposed. In a second part, starting from this model and through a critical analysis of current DVB-S/RCS satellite systems, we demonstrate that satellite QoS architectures are not mature enough to support broadband access to future multimedia services and to integrate into the emerging NGN infrastructure. In order to cope with these issues, a NGN-compliant QoS architecture for DVB-S/RCS systems is defined. It relies on a cross-layer approach based on a tight interaction between QoS mechanisms available at different communication layers (Application, Session, Network and MAC). It aims at maximizing satellite capacity utilization at different granularity levels through a relevant configuration of DiffServ services using session/application signalling information and the use of optimized bandwidth on demand allocation schemes at the MAC layer. Application solutions (QoS Agent and QoS SIP Proxy) were developed while the satellite network with its associated QoS architecture was implemented through a network emulator. This latter enables us to evaluate the QoS guarantees provided by this architecture and to validate its appropriateness with real multimedia applications needs.
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Submitted on : Tuesday, January 17, 2006 - 4:55:21 PM
Last modification on : Tuesday, October 25, 2022 - 11:58:10 AM
Long-term archiving on: : Saturday, April 3, 2010 - 9:29:22 PM


  • HAL Id : tel-00011402, version 1


Olivier Alphand. Architecture à qualité de service pour systèmes satellites DVB-S/RCS dans un contexte NGN. Réseaux et télécommunications [cs.NI]. Institut National Polytechnique de Toulouse - INPT, 2005. Français. ⟨NNT : ⟩. ⟨tel-00011402⟩



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