A Framework for Describing Interference in Ubiquitous Computing Environments

Morla, Ricardo; Davies, Nigel

doi:10.1109/percomw.2006.6

Cited by 9 publications

(19 citation statements)

References 6 publications

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“…Some research work exists which addresses the management of subsets of the interference problem , e.g. [KMW03], [MD06], [SHW05], or [RC03]. Other work focuses on the realization of frameworks to detect and resolve problems between multiple applications such as [MD06] and [BRK06].…”

Section: Research Aimmentioning

confidence: 99%

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Application Coordination in Pervasive Systems

Majuntke¹

2013

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Section: Research Aimmentioning

confidence: 99%

“…[KMW03], [MD06], [SHW05], or [RC03]. Other work focuses on the realization of frameworks to detect and resolve problems between multiple applications such as [MD06] and [BRK06]. However, their work remains on a theoretical level and has not been developed to handle the addressed problems at runtime.…”

Section: Research Aimmentioning

confidence: 99%

Application Coordination in Pervasive Systems

Majuntke¹

2013

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“…None of the definitions covers exactly the problem of interferences as they are addressed in the context of this thesis. Morla et al [MD06], for example, refer to an interference as a situation where the behavior of a ubiquitous component in a multiuser/multi-application environment differs from that in isolation. In contrast to this, we assume that applications actually work as intended as they have been designed to react to context changes and adapt respectively.…”

Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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6. Application Coordination in Pervasive Systems

Application Coordination in Pervasive Systems

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Our future environment will be managed by a multitude of different pervasive systems. A pervasive system consists of users and devices which cooperate to provide functionality to the users. The provision of functionality is realized by pervasive applications. A major characteristic of pervasive applications is their context-interactivity. On one hand, pervasive applications are context-aware and can adapt themselves to changing context. This ability enables them to provide their functionality in different configurations. On the other hand, pervasive applications have the ability to influence and change the context themselves. A context change can be caused implicitly as a side effect of employed resources or explicitly through the use of actuators. Due to the context-interactivity, problems are likely to occur when two or more applications are executed in the same physical space. Since applications share a common context and interact with it, they can have a direct impact on each other.The described problem is defined as an interference in this thesis. An interference is an application-produced context that impairs the functionality provision of another application.To manage interferences in pervasive systems, a coordination framework is presented. The framework detects interferences using a context model and information about how applications interact with the shared context. The resolution of an interference is achieved through a coordinated application adaptation. The idea is based on the assumption that an alternative application configuration may yield a different context interaction. Thus, the framework determines a configuration for each application such that the context interactions do not interfere. Once a configuration is found for each application, the framework instructs applications to instantiate the selected configuration, resolving the interference.The framework is unique due to three design decisions. At first, the framework is realized as a cross-system coordination layer in order to allow an integration of arbitrary systems. Secondly, the integration of applications can be achieved through the extension of existing systems while iii iv Abstract preserving their system characteristics. Thirdly, the framework supports a generic interface to integrate arbitrary resolution strategies in order to allow the customization of the framework to the needs of different pervasive systems. The thesis introduces the theoretical concepts of the framework, presents a prototypical implementation and evaluates the prototype and its implemented concepts through extensive measurements.

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Informing the Design of User Studies on Conceptual Interference Frameworks

Morla¹,

Davies

2007

21st International Conference on Advanced Information Networking and Applications Workshops (AINAW'07)

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The problem of interference is likely to be commonplace in deployed ubiquitous computing systems. A conceptual framework was proposed in [1] to help researchers address this problem. Evaluating conceptual frameworks such as this is a challenging task; one approach to do so is to design and conduct user studies of how researchers address interference using such frameworks. In this paper we provide insights on the design of such user studies with the help of a formative evaluation of the framework proposed in [1]. We created a scenario in which different components are deployed and interfere with each other, and asked researchers to identify, describe, and propose solutions to interference in this scenario. We observed two groups of researchers tackling the same problem of interference, one group using the interference framework and the other not using the framework. We build on this evaluation to inform the methodology and the research challenges of future user studies of conceptual interference frameworks.

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A Framework for Describing Interference in Ubiquitous Computing Environments

Abstract: Abstract

Cited by 9 publications

References 6 publications

Application Coordination in Pervasive Systems

Application Coordination in Pervasive Systems

6. Application Coordination in Pervasive Systems

Informing the Design of User Studies on Conceptual Interference Frameworks

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