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Les mécanismes de fiabilisation (protocoles ARQ) et leur adaptation dans les réseaux radiomobiles de 3G

Abstract : The UMTS 3G system (3rd generation cellular system) is designed to offer a packet switched mode for data transfers in parallel to a circuit switched mode. This feature was planned since the beginning of 3G studies, contrary to 2G ones (such as the GSM system). To provide reliable data transfers, protocols implementing ARQ (Automatic Repeat reQuest) mechanisms are needed. We study ARQ protocols that can simultaneously be activated at different levels of the global UMTS protocol architecture: RLC (Radio Link Control), TCP (Transmission Control Protocol) and MAC-hs (Medium Access Control-high speed). A study of new features of the UMTS ARQ mechanisms as well as possibilities of their enrichments is studied. The stacking of ARQ mechanisms represents a risk of interactions between them. We analyze some of these interactions
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Submitted on : Monday, April 5, 2004 - 5:57:36 PM
Last modification on : Friday, July 31, 2020 - 10:44:03 AM
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  • HAL Id : tel-00005738, version 1

Citation

Robert Bestak. Les mécanismes de fiabilisation (protocoles ARQ) et leur adaptation dans les réseaux radiomobiles de 3G. Traitement du signal et de l'image [eess.SP]. Télécom ParisTech, 2003. Français. ⟨tel-00005738⟩

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