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Environnement adaptatif d'exécution distribuée d'applications dans un contexte mobile

Abstract : Mobile computing is a domain in great expansion. Wireless networks (GSM, satellite, etc) and Portable Information Appliances PIAs (laptops, PDAs, cellular phones, etc) are developing very rapidly. These environments present particular features: (i) due to size and weight limitations, a PIA is resources-limited, (ii) wireless networks have a low bandwidth suffering of variations and disconnections and (iii) due to the mobility, environment of a PIA always change such as when stations/resources/peripherics appear or disappear. Goal of this thesis is to propose generic method for the use of external resources by distribution techniques. So, we propose an adaptive distribution system for applications in a mobile context. We have built a generic architecture with framework and toolkit. Framework is composed of functionalities commonly used for mobile environment management. Toolkit is made up of implementations used to specialize functionalities . In our framework, we have particularly developed two functionalities. Dynamic adaptation and reaction functionality specifies an auto-adaptive entity model where designers can dynamically specialize (i) possible adaptations of the entity and (ii) an adaptation strategy, describing the behavior to adopt in case of variation of execution conditions. Resources management and applications distribution functionality specifies mobile environment features and applications needs by a resource/offers - entity/demands model. Five services are developed to implement this functionality: (i) the environment management service, (ii) the local environment management service, (iii) the detection and notification service, (iv) the distribution service and (v) the adaptations control service. These ones are made up of adaptive policies, based on entity model, which can be dynamically specialized by designers. A prototype, AeDEn, has been developed and tested with many experiments which proved that distribution in mobile environments saves resources of PIA and improve performances of applications.
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Contributor : Frédéric Le Mouël Connect in order to contact the contributor
Submitted on : Tuesday, January 13, 2004 - 7:59:15 PM
Last modification on : Tuesday, June 15, 2021 - 4:14:11 PM
Long-term archiving on: : Friday, April 2, 2010 - 7:23:01 PM


  • HAL Id : tel-00004161, version 1


Frédéric Le Mouël. Environnement adaptatif d'exécution distribuée d'applications dans un contexte mobile. Réseaux et télécommunications [cs.NI]. Université Rennes 1, 2003. Français. ⟨tel-00004161⟩



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