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Dobslaw, Felix, 1983-, et al.
(författare)
An Object-Oriented Model in Support of Context Aware Mobile Applications
2010
Ingår i: Mobile Wireless Middleware, Operating Systems, and Applications. - Berlin Hedielberg : Springer Verlag. - 9783642177576
Konferensbidrag (refereegranskat) abstract
Intelligent and context-aware mobile services require users and applications to share information and utilize services from remote locations. Thus, context information from the users must be structured and be accessible to applications running in end-devices. In response to this challenge, we present a shared object-oriented meta model for a persistent agent environment. The approach enables agents to be context aware facilitating the creation of ambient intelligence demonstrated by a sensor-based scenario. The agents are context-aware as agent actions are based upon sensor information, social information, and the behavior of co-agents.
3.
Kanter, Theo, et al.
(författare)
Ubiquitous Mobile Awareness from Sensor Networks
2010
Ingår i: Enabling context-aware web services. - Boca Raton : CRC Press. - 9781439809860 - 9781439809853 ; , s. 449-468
Bokkapitel (refereegranskat) abstract
Users require applications and services to be available everywhere, enabling users to focus on what is important to them. Therefore, context information from users (e.g., spatial data, preferences, available connectivity and devices, etc.) needs to be accessible to systems that deliver services via a heterogeneous infrastructure. We present a novel approach to support ubiquitous sensing and availability of context to services and applications. This approach offers a scalable, distributed storage of context derived from sensor networks wirelessly attached to mobile phones and other devices. The support handles frequent updates of sensor information and is interoperable with presence services in 3G mobile systems, thus enabling ubiquitous sensing applications. We demonstrate these concepts and the principle operation in a sample ubiquitous mobile awareness service. The importance of this contribution, in comparison to earlier work, lies in the availability of real-time ubiquitous sensing to both applications on the Internet as well as applications in mobile systems.
4.
Rahmani, Rahim, et al.
(författare)
A self configuring fuzzy Active Queue Management controller in heterogeneous networks
2010
Ingår i: ICT 2010: 2010 17th International Conference on Telecommunications. - Piscataway, NJ : IEEE conference proceedings. - 9781424452477 - 9781424452460 ; , s. 634-641
Konferensbidrag (refereegranskat) abstract
To achieve self configuring of Active Queue Management based on Fuzzy Logic Controller (FLC), we propose a Fuzzy Adaptive Active Queue Management Controller (FAAQMC). FAAQMC eliminates buffer overflow by adapting the buffer size to the required queue length with a control cycle time shorter than the mean inter-arrival time of a burst. This makes FAAQMC suitable to manage invariant burstiness or self-similar network traffic. © 2009 IEEE.
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Forsström, Stefan, et al.
(författare)
Continuously Changing Information on a Global Scale and its Impact for the Internet-of-Things
2014
Ingår i: Mobile Networks and Applications. - : Springer Science and Business Media LLC. - 1383-469X .- 1572-8153. ; 19:1, s. 33-44
Tidskriftsartikel (refereegranskat) abstract
This article analyzes the challenges of supporting continual changes of context information in Internet-of-Things applications. These applications require a constant flow of continuously changing information from sensor based sources in order to ensure a high quality-of-experience. However, an uncontrolled flow between sources and sinks on a global scale wastes resources, such as computational power, communication bandwidth, and battery time. In response to these challenges we present a general approach which focuses on four layers where we provide a proposed solution to each layer. We have realized the general model into a proof-of-concept implementation running on devices with limited resources, where we can moderate the information exchange based on relevance and sought after quality-of-experience by the applications. In conclusion, we evaluate our solution and present a summary of our experiences regarding the impact of continuously changing information on the Internet-of-Things.
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Forsström, Stefan, et al.
(författare)
Enabling ubiquitous sensor-assisted applications on the internet-of-things
2014
Ingår i: Personal and Ubiquitous Computing. - : Springer Science and Business Media LLC. - 1617-4909 .- 1617-4917. ; 18:4, s. 977-986
Tidskriftsartikel (refereegranskat) abstract
Ökningen av sensor-assisterade tillämpningar såsom sensorkampanjer och interaktioner i storskaliga befolkningar ställer nya krav på smidig delning av sensor-information i global skala. Befintligt stöd är begränsat på grund av förenklade informationsmodeller återspeglar smala applikationsscenarier med dåligt skalbarhet i arkitekturer. Som svar på detta presenterar vi en tillämpningsarkitektur för allstädes Internet-av-saker applikationer som kringgår dessa begränsningar. Vår arkitektur gör att program kan använda information från sensorer och trådlösa sensornätverk via en peer-to-peer-overlay. Den överlagrade delade sensorinformation i en generisk informationsmodell, som är utbyggbar och därmed möjliggör intelligent tillämpningsbeteende. Vår utvärdering av arkitekturen visar att det stöder delning av sensorns information i en global skala i sensor-assisterafe tillämpningar med låga svarstider. Slutligen utvärderar vi möjligheten att köra sådana ansökningar i slutet enheter med begränsade resurser i en sensor-assisterad tjänsteprototyp.
10.
Forsström, Stefan, et al.
(författare)
MediaSense - an Internet of Things Platform for Scalable and Decentralized Context Sharing and Control
2012
Ingår i: ICDT 2012, The Seventh International Conference on Digital Telecommunications. - : International Academy, Research and Industry Association (IARIA). - 9781612081939 ; , s. 27-32
Konferensbidrag (refereegranskat) abstract
Research in Internet-of-Things infrastructures has so far mainly been focused on connecting sensors and actuators to the Internet, while associating these devices to applications via web services. This has contributed to making the technology accessible in areas such as smart-grid, transport, health, etc. These early successes have hidden the lack of support for sensor-based applications to share information and limitations in support for applications to access sensors and actuators globally. We address these limitations in a novel open-source platform, MediaSense. MediaSense offers scalable, seamless, real-time access to global sensors and actuators via hetero- geneous network infrastructure. This paper presents a set of requirements for Internet-of-Things applications support, an overview of our architecture, and application prototypes created in order to verify the approach in a test bed with users connected from heterogeneous networks.
