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Kanter, Theo
Publications (10 of 73) Show all publications
Forsström, S. & Kanter, T. (2014). Continuously Changing Information on a Global Scale and its Impact for the Internet-of-Things. Journal on spesial topics in mobile networks and applications, 19(1), 33-44
Open this publication in new window or tab >>Continuously Changing Information on a Global Scale and its Impact for the Internet-of-Things
2014 (English)In: Journal on spesial topics in mobile networks and applications, ISSN 1383-469X, E-ISSN 1572-8153, Vol. 19, no 1, p. 33-44Article in journal (Refereed) Published
Abstract [en]

This article analyzes the challenges of supportingcontinual changes of context information in Internetof-Things applications. These applications require aconstant flow of continuously changing information fromsensor based sources in order to ensure a high quality-ofexperience.However, an uncontrolled flow between sourcesand sinks on a global scale wastes resources, such ascomputational power, communication bandwidth, andbattery time. In response to these challenges we presenta general approach which focuses on four layers wherewe provide a proposed solution to each layer. We haverealized the general model into a proof-of-concept implementationrunning on devices with limited resources,where we can moderate the information exchange basedon relevance and sought after quality-of-experience bythe applications. In conclusion, we evaluate our solutionand present a summary of our experiences regardingthe impact of continuously changing information on theInternet-of-Things.

Keywords
Pervasive, Context awareness, Real-time, Internet-of-things
National Category
Computer Systems
Identifiers
urn:nbn:se:miun:diva-20435 (URN)10.1007/s11036-013-0479-2 (DOI)000331828700004 ()2-s2.0-84894829955 (Scopus ID)STC (Local ID)STC (Archive number)STC (OAI)
Note

Publ online 27 october 2013

Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2017-12-06Bibliographically approved
Walters, J., Kanter, T. & Savioli, E. (2012). A Distributed Framework for Organizing an Internet of Things. In: Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering: . Paper presented at 3rd International ICST Conference on Mobile Lightweight Wireless Systems, MOBILIGHT 2011;Bilbao;9 May 2011through10 May 2011;Code90406 (pp. 231-247). Springer
Open this publication in new window or tab >>A Distributed Framework for Organizing an Internet of Things
2012 (English)In: Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, Springer, 2012, p. 231-247Conference paper, Published paper (Refereed)
Abstract [en]

Applications on a future Internet of Things require the provisioning of current, relevant and accurate context information to end-points. Context information existing globally require organization into object-oriented models available locally in APIs as current, relevant and accurate views. Moreover, such applications require support for the highly dynamic interactions influencing continual changes in global context information. Existing approaches, such as the web services, are unable to provide this support partly due to the presupposed existence of a network service brokering context information, relying on DNS; or adopting a presence model for context which does not adequately scale. To this end, we propose a distributedframework for the interconnection of end-points and co-located agent entities, whereby agents are provided with local views of a relevant subset of global context information. We show how to achieve relevant local current views of global context information via ranking in an object-oriented context model. The distributed approach realizes the provisioning of context information in real-time, i.e., with predictable time bounds. Finally, we demonstrate the feasibility of the approach in a prototype based on P-Grid. © 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering.

Place, publisher, year, edition, pages
Springer, 2012
Keywords
context distance; context metrics; context proximity; dcxp; mediasense; p-grid; sensor ranking
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-13723 (URN)10.1007/978-3-642-29479-2_18 (DOI)2-s2.0-84869594793 (Scopus ID)STC (Local ID)978-364229478-5 (ISBN)STC (Archive number)STC (OAI)
Conference
3rd International ICST Conference on Mobile Lightweight Wireless Systems, MOBILIGHT 2011;Bilbao;9 May 2011through10 May 2011;Code90406
Available from: 2011-04-29 Created: 2011-04-29 Last updated: 2016-10-19Bibliographically approved
Forsström, S. & Kanter, T. (2012). Enabling Continuously Evolving Context Information in Mobile Environments by Utilizing Ubiquitous Sensors. In: Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering: . Paper presented at 3rd International ICST Conference on Mobile Networks and Management, MONAMI 2011;Aveiro;21 September 2011through23 September 2011;Code91208 (pp. 289-303). Springer Berlin/Heidelberg
Open this publication in new window or tab >>Enabling Continuously Evolving Context Information in Mobile Environments by Utilizing Ubiquitous Sensors
2012 (English)In: Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, Springer Berlin/Heidelberg, 2012, p. 289-303Conference paper, Published paper (Refereed)
Abstract [en]

Context-aware applications require local access to current and relevant views of context information derived from global sensors. Existing approaches provide only limited support, because they either rely on a network broker service precluding open-ended searches, or they adopt a presence model which has scalability issues. To this end, we propose a fully distributed architecture employing context user-agents co-located with data-mining agents. These agents create and maintain local schemas using ranking of global context information based on context proximity. Continually evolving context information thus provides applications with current and relevant context views derived from global sensors. Furthermore, we present an evaluation model for assessing the effort required to present local applications with current and relevant contextual views. We show in a comparison with earlier work that the approach achieves the provisioning of evolving context information to applications within predictable time bounds, circumventing earlier limitations.

Place, publisher, year, edition, pages
Springer Berlin/Heidelberg, 2012
Keywords
Evolving context, ubiquitous sensors, mobile environments
National Category
Computer Sciences
Identifiers
urn:nbn:se:miun:diva-14563 (URN)10.1007/978-3-642-30422-4_21 (DOI)2-s2.0-84869597832 (Scopus ID)STC (Local ID)STC (Archive number)STC (OAI)
Conference
3rd International ICST Conference on Mobile Networks and Management, MONAMI 2011;Aveiro;21 September 2011through23 September 2011;Code91208
Available from: 2011-10-03 Created: 2011-10-03 Last updated: 2018-01-12Bibliographically approved
Forsström, S., Österberg, P. & Kanter, T. (2012). Evaluating Ubiquitous Sensor Information Sharing on the Internet-of-Things. In: Proc. of the 11th IEEE Int. Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012: 11th IEEE Int. Conference on Ubiquitous Computing and Communications, IUCC-2012. Paper presented at 11th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012;Liverpool;25 June 2012through27 June 2012;Category numberE4745;Code93340 (pp. 1454-1460). IEEE conference proceedings
Open this publication in new window or tab >>Evaluating Ubiquitous Sensor Information Sharing on the Internet-of-Things
2012 (English)In: Proc. of the 11th IEEE Int. Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012: 11th IEEE Int. Conference on Ubiquitous Computing and Communications, IUCC-2012, IEEE conference proceedings, 2012, p. 1454-1460Conference paper, Published paper (Refereed)
Abstract [en]

Next generation context-aware mobile applicationswill require a continuous update of relevant information about auser’s surroundings, in order to create low latency notificationsand high quality of experience. Existing mobile devices alreadycontain a large number of built in sensors which are capableof producing huge amounts of sensor data, exceeding boththe capacity of the local storage and the Internet connection.Therefore, we will in this paper study the limits when sharingcontextual information from mobile devices, as well as finding theimpact of this information overload for the Internet-of-Things.Furthermore, we present an evaluation model for assessing theeffort required to present applications with relevant contextinformation. In conclusion, the model shows that one feasiblesolution for the future Internet-of-Things is a peer-to-peer basedsolution which can control the flow of information without anycentralized authority, to circumvent earlier limitations.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2012
Keywords
Evaluation model; Information overload; Internet-of-Things
National Category
Communication Systems
Identifiers
urn:nbn:se:miun:diva-16622 (URN)10.1109/TrustCom.2012.151 (DOI)2-s2.0-84868099324 (Scopus ID)STC (Local ID)978-076954745-9 (ISBN)STC (Archive number)STC (OAI)
Conference
11th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012;Liverpool;25 June 2012through27 June 2012;Category numberE4745;Code93340
Projects
InSIKTKITT
Available from: 2012-07-03 Created: 2012-07-03 Last updated: 2016-10-20Bibliographically approved
Walters, J. & Kanter, T. (2012). Evolving Presentity-Based Context Schemas by Estimating Context Proximity. In: Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering: . Paper presented at 3rd International ICST Conference on IT Revolutions, 2011;Cordoba;23 March 2011through25 March 2011;Code92419 (pp. 137-152). Springer
Open this publication in new window or tab >>Evolving Presentity-Based Context Schemas by Estimating Context Proximity
2012 (English)In: Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, Springer, 2012, p. 137-152Conference paper, Published paper (Refereed)
Abstract [en]

The definition of what constitutes context proximity has remained largely unexplored but accepted as being a fundamental issue towards realising an architecture of connected things. Existing solutions aimed at enabling context awareness are often undermined by their dependencies on centralized architectures limited with respect to their scalability. Our previous work proposed the use of the so called Context Schema; an encapsulated representation of the information points constituting the context of a presentity. Building such a schema requires support for determining set members limited by some metric; a proximity metric. In this paper, we propose an algorithm for estimating the context proximity among presentities, enabling complete schemata of entities relevant to, and expressing the current context of a presentity. Secondly we propose an extension of a gossiping algorithm to optimize the ability create schemata as one traverses a vast and dynamic connected things infrastructure. © 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering.

Place, publisher, year, edition, pages
Springer, 2012
Keywords
Context; Context Awareness; Context Proximity; Presentity; Real Time; Self-Organization
National Category
Communication Systems
Identifiers
urn:nbn:se:miun:diva-13266 (URN)10.1007/978-3-642-32304-1_13 (DOI)2-s2.0-84869598460 (Scopus ID)STC (Local ID)978-364232303-4 (ISBN)STC (Archive number)STC (OAI)
Conference
3rd International ICST Conference on IT Revolutions, 2011;Cordoba;23 March 2011through25 March 2011;Code92419
Available from: 2011-02-16 Created: 2011-02-16 Last updated: 2016-10-19Bibliographically approved
Kanter, T., Forsström, S., Kardeby, V., Walters, J., Jennehag, U. & Österberg, P. (2012). MediaSense – an Internet of Things Platform for Scalable and Decentralized Context Sharing and Control. In: : . Paper presented at ICDT2012.
Open this publication in new window or tab >>MediaSense – an Internet of Things Platform for Scalable and Decentralized Context Sharing and Control
Show others...
2012 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Research in Internet-of-Things infrastructures hasso far mainly been focused on connecting sensors and actuatorsto the Internet, while associating these devices to applicationsvia web services. This has contributed to making the technologyaccessible in areas such as smart-grid, transport, health, etc.These early successes have hidden the lack of support forsensor-based applications to share information and limitationsin support for applications to access sensors and actuatorsglobally. We address these limitations in an novel open-sourceplatform, MediaSense. MediaSense offers scalable, seamless,real-time access to global sensors and actuators via hetero-geneous network infrastructure. This paper presents a setof requirements for Internet-of-Things applications support,an overview of our architecture, and application prototypescreated in order to verify the approach in a test bed withusers connected from heterogeneous networks.

Keywords
Internet of Things, Context awareness, Sensors, Actuators, Open source
National Category
Communication Systems
Identifiers
urn:nbn:se:miun:diva-16620 (URN)STC (Local ID)STC (Archive number)STC (OAI)
Conference
ICDT2012
Projects
InSIKTKITT
Available from: 2012-07-03 Created: 2012-07-03 Last updated: 2016-10-20Bibliographically approved
Forsström, S., Kanter, T. & Johansson, O. (2012). Real-Time Distributed Sensor-Assisted mHealth Applications on the Internet-of-Things. In: Proc. of the 11th IEEE Int. Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012: 11th IEEE Int. Conference on Ubiquitous Computing and Communications, IUCC-2012. Paper presented at 11th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012;Liverpool;25 June 2012through27 June 2012;Category numberE4745;Code93340 (pp. 1844-1849). IEEE conference proceedings
Open this publication in new window or tab >>Real-Time Distributed Sensor-Assisted mHealth Applications on the Internet-of-Things
2012 (English)In: Proc. of the 11th IEEE Int. Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012: 11th IEEE Int. Conference on Ubiquitous Computing and Communications, IUCC-2012, IEEE conference proceedings, 2012, p. 1844-1849Conference paper, Published paper (Refereed)
Abstract [en]

Existing sensor-assisted mHealth applications wouldbenefit from large-scale sharing of sensor information in realtime.Existing communication solutions are however limited inthis respect, because of centralized application-level communication.In response to this, we presents a distributed communicationsolution for mHealth applications which circumvents these limitations.Our Internet-of-Things architecture enables mHealth applicationsto utilize information from sensors and wireless sensornetworks via a peer-to-peer overlay, where sensor information isorganized in an information model which is stored in the overlayitself. We present a proof-of-concept application and evaluationresults regarding the architecture’s real-time capabilities. Theresults indicate that a fully distributed architecture can supportreal-time sensing in mHealth applications and the support isavailable as an open source platform, MediaSense. Current workis focused on evaluating scalability in very large scale scenariosusing field trials.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2012
Keywords
Internet-of-Things; mHealth; Platform
National Category
Computer Systems
Identifiers
urn:nbn:se:miun:diva-16621 (URN)10.1109/TrustCom.2012.234 (DOI)2-s2.0-84868144318 (Scopus ID)STC (Local ID)978-076954745-9 (ISBN)STC (Archive number)STC (OAI)
Conference
11th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012;Liverpool;25 June 2012through27 June 2012;Category numberE4745;Code93340
Projects
InSIKTKITT
Available from: 2012-07-03 Created: 2012-07-03 Last updated: 2016-10-20Bibliographically approved
Forsström, S., Kanter, T. & Österberg, P. (2012). Ubiquitous Secure Interactions with Intelligent Artifacts on the Internet-of-Things. In: Proc. of the 11th IEEE Int. Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012: 11th IEEE Int. Conference on Ubiquitous Computing and Communications, IUCC-2012. Paper presented at 11th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012;Liverpool;25 June 2012through27 June 2012;Category numberE4745;Code93340 (pp. 1520-1524). IEEE conference proceedings
Open this publication in new window or tab >>Ubiquitous Secure Interactions with Intelligent Artifacts on the Internet-of-Things
2012 (English)In: Proc. of the 11th IEEE Int. Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012: 11th IEEE Int. Conference on Ubiquitous Computing and Communications, IUCC-2012, IEEE conference proceedings, 2012, p. 1520-1524Conference paper, Published paper (Refereed)
Abstract [en]

Intelligent artifacts are real-world objects enhancedwith capabilities in order to display relevant behavior in varioustypes of context-aware applications, such as in mHealth,commerce, or pervasive games. This can be achieved by attachingsensors and store associated information on the Internet.Interaction with such artifacts requires secure communication,to protect personal and private information. This mandatesresearch in how to safeguard interactions via heterogeneousmeans of communication involving interconnected local and nonlocalartifacts. In response to these challenges, this paper presentskey schemes to secure interaction via heterogeneous means ofcommunication. In conclusion, the architecture can securelyauthenticate an intelligent artifact as well as securely exchangesensor information with other authenticated artifacts attached inan overlay. Our proof-of-concept application demonstrated in anInternet-of-Things platform validates the approach.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2012
Keywords
Intelligent artifacts; Internet-of-Things; Secure interactions
National Category
Computer Systems
Identifiers
urn:nbn:se:miun:diva-16623 (URN)10.1109/TrustCom.2012.290 (DOI)2-s2.0-84868130715 (Scopus ID)STC (Local ID)978-076954745-9 (ISBN)STC (Archive number)STC (OAI)
Conference
11th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom-2012;Liverpool;25 June 2012through27 June 2012;Category numberE4745;Code93340
Projects
InSIKTKITT
Available from: 2012-07-03 Created: 2012-07-03 Last updated: 2016-10-20Bibliographically approved
Rahmani, R., Åhlund, C. & Kanter, T. (2011). Design of active queue management for robust control on access router for heterogeneous networks. EURASIP Journal on Wireless Communications and Networking, 2011, Art. no. 946498
Open this publication in new window or tab >>Design of active queue management for robust control on access router for heterogeneous networks
2011 (English)In: EURASIP Journal on Wireless Communications and Networking, ISSN 1687-1472, E-ISSN 1687-1499, Vol. 2011, p. Art. no. 946498-Article in journal (Refereed) Published
Abstract [en]

The Internet architecture is a packet switching technology that allows dynamic sharing of bandwidth among different flows with in an IP network. Packets are stored and forwarded from one node to the next until reaching their destination. Major issues in this integration are congestion control and how to meet different quality of service requirements associated with various services. In other words streaming media quality degrades with increased packet delay and jitter caused by network congestion. To mitigate the impact of network congestion, various techniques have been used to improve multimedia quality and one of those techniques is Active Queue Management (AQM). Access routers require a buffer to hold packets during times of congestion. A large buffer can absorb the bursty arrivals, and this tends to increase the link utilizations but results in higher queuing delays. Traffic burstiness has a considerable negative impact on network performance. AQM is now considered an effective congestion control mechanism for enhancing transport protocol performance over wireless links. In order to have good link utilization, it is necessary for queues to adapt to varying traffic loads. This paper considers a particular scheme which is called Adaptive AQM (AAQM) and studies its performance in the presence of feedback delays and its ability to maintain a small queue length as well as its robustness in the presence of traffic burstiness. The paper also presents a method based on the well-known Markov Modulated Poisson Process (MPP) to capture traffic burstiness and buffer occupancy. To demonstrate the generality of the presented method, an analytic model is described and verified by extensive simulations of different adaptive AQM algorithms. The analysis and simulations show that AAQM outperforms the other AQMs with respect to responsiveness and robustness. © 2011 Rahim Rahmani et al.

Keywords
Access Routers, Active Queue Management, Analysis and simulation, Analytic models, AQM algorithms, Buffer occupancy, Bursty arrivals, Congestion control mechanism, Extensive simulations, Feedback delay, Internet architecture, IP networks, Large buffer, Link utilization, Markov modulated Poisson process, Multimedia quality, Negative impacts, Network congestions, Packet delay, Packet switching technology, Queue lengths, Queuing delay, Service requirements, Streaming media, Traffic burstiness, Traffic loads, Transport protocols, Wireless link, Access control, Adaptive algorithms, Computer architecture, Computer simulation, Heterogeneous networks, Internet protocols, Jitter, Media streaming, Mobile telecommunication systems, Network performance, Poisson distribution, Queueing theory, Robust control, Robustness (control systems), Routers, Queueing networks
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:miun:diva-14193 (URN)10.1155/2011/946498 (DOI)2-s2.0-79959195043 (Scopus ID)STC (Local ID)STC (Archive number)STC (OAI)
Available from: 2011-07-19 Created: 2011-07-19 Last updated: 2018-01-12Bibliographically approved
Walters, J., Kanter, T. & Norling, R. (2011). Distributed Context Models in Support of Ubiquitous Mobile Awareness Services. In: 2nd International ICST Conference on Sensor Systems and Software, S-Cube; Miami, FL; 13 December 2010 through 15 December 2010; Code 87376: . Paper presented at 2nd International ICST Conference on Sensor Systems and Software, S-Cube; Miami, FL; 13 December 2010 through 15 December 2010; Code 87376 (pp. 121-134). Springer
Open this publication in new window or tab >>Distributed Context Models in Support of Ubiquitous Mobile Awareness Services
2011 (English)In: 2nd International ICST Conference on Sensor Systems and Software, S-Cube; Miami, FL; 13 December 2010 through 15 December 2010; Code 87376, Springer, 2011, p. 121-134Conference paper, Published paper (Refereed)
Abstract [en]

Real-time context aware applications require dynamic support reflecting the continual changes in context. Architectures that distribute and utilize the supporting sensor information within the constraints of publish-subscribe systems provide sensor information in primitive forms requiring extensive application-level transformations limiting the dynamic addition and removal of sources. Elevating sensors to first class objects in a meta-model addresses these issues by applying ontological dimensions in direct support of context. This paper proposes an extension of such a model into a distributed architecture co-located with context user agents. This arrangement provides clients with a model schema which is continually evolving over sensor domains. In addition, the evolving model schema represents an accurate temporal view of a userâǍŹs context with respect to the available sensors and actuators.

Place, publisher, year, edition, pages
Springer, 2011
Series
Lecture Notes in Computer Science, ISSN 0302-9743 ; 57
Keywords
Context Agents; Context Awareness; Object-Oriented; Peer-to-Peer
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:miun:diva-12283 (URN)10.1007/978-3-642-23583-2_9 (DOI)2-s2.0-84869597392 (Scopus ID)STC (Local ID)978-364223582-5 (ISBN)STC (Archive number)STC (OAI)
Conference
2nd International ICST Conference on Sensor Systems and Software, S-Cube; Miami, FL; 13 December 2010 through 15 December 2010; Code 87376
Available from: 2010-11-24 Created: 2010-11-24 Last updated: 2018-01-12Bibliographically approved
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