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Brännström, Robert
Publications (10 of 27) Show all publications
Granlund, D., Johansson, D., Andersson, K. & Brännström, R. (2013). A case study of application development for mobile and location-based services (ed.). In: (Ed.), Proceedings of the 15th International Conference on Information Integration and Web-based Applications & Services (iiWAS2013): . Paper presented at International Conference on Information Integration and Web-based Applications & Services : 02/12/2013 - 04/12/2013 (pp. 658-662). New York: ACM Digital Library
Open this publication in new window or tab >>A case study of application development for mobile and location-based services
2013 (English)In: Proceedings of the 15th International Conference on Information Integration and Web-based Applications & Services (iiWAS2013), New York: ACM Digital Library, 2013, p. 658-662Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we present a case study of a location-dependent service, aimed for tourists. Two applications are developed, one based on native technologies, the other on HTML5 and related frameworks. We provide implementation details and compare the different solutions in terms of location support, compliance with required features, and cross-platform functionality. Our experiments show that web-based approaches may lead to significant benefits over using native technologies; both versions of the application displayed comparable location support and compliance with required features, while the web version superseded its native counterpart in cross-platform functionality.

Place, publisher, year, edition, pages
New York: ACM Digital Library, 2013
National Category
Media and Communication Technology
Research subject
Mobile and Pervasive Computing
Identifiers
urn:nbn:se:ltu:diva-32932 (URN)10.1145/2539150.2539202 (DOI)84896827418 (Scopus ID)7978770c-1e62-48f2-b988-9a13154cc6ad (Local ID)978-1-4503-2113-6 (ISBN)7978770c-1e62-48f2-b988-9a13154cc6ad (Archive number)7978770c-1e62-48f2-b988-9a13154cc6ad (OAI)
Conference
International Conference on Information Integration and Web-based Applications & Services : 02/12/2013 - 04/12/2013
Projects
NIMO - Nordic Interaction and Mobility Research Platform
Note

Godkänd; 2013; 20131001 (dandan)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-06-13Bibliographically approved
Schelén, O., Brännström, R. & Åhlund, C. (2013). A sensor-data acquisition grid architecture (ed.). In: (Ed.), (Ed.), 2013 IEEE International Conference on Networking, Sensing and Control: . Paper presented at IEEE International Conference on Networking, Sensing and Control : 10/04/2013 - 12/04/2013 (pp. 361-366). Piscataway, NJ: IEEE Communications Society
Open this publication in new window or tab >>A sensor-data acquisition grid architecture
2013 (English)In: 2013 IEEE International Conference on Networking, Sensing and Control, Piscataway, NJ: IEEE Communications Society, 2013, p. 361-366Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents SAGA, a functional software architecture for distributing sensor data. The recursive architecture is dynamically instantiated for collecting, composing and storing data at multiple locations. Objectives are to support devices that are intermittently connected over different access-technologies, to save energy by avoiding repetitive transmission from sensors, and to scale out data compositions for different application services. When the architecture is instantiated the entities form a directed graph across organizational boundaries between sensors and applications. Data may be retrieved from sensors on-demand or be disseminated in real-time, for composition and delivery to the applications. The architecture is based on current sensor network principles such as client-server, representational state transfer and web services. The architecture is presented together with identified key requirements and design choices, and it has been instantiated in a prototype implementation for a smart city application. Some key issues for further research are presented.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2013
Series
I E E E International Conference on Networking, Sensing and Control. Conference Proceedings, ISSN 1810-7869
National Category
Computer Sciences Media and Communication Technology
Research subject
Dependable Communication and Computation Systems; Mobile and Pervasive Computing
Identifiers
urn:nbn:se:ltu:diva-37599 (URN)10.1109/ICNSC.2013.6548764 (DOI)2-s2.0-84881299923 (Scopus ID)babed004-99c5-49d7-b08d-7a841c812ef0 (Local ID)978-1-4673-5199-7 (ISBN)978-1-4673-5199-7 (ISBN)babed004-99c5-49d7-b08d-7a841c812ef0 (Archive number)babed004-99c5-49d7-b08d-7a841c812ef0 (OAI)
Conference
IEEE International Conference on Networking, Sensing and Control : 10/04/2013 - 12/04/2013
Note
Godkänd; 2013; 20130508 (olov)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2018-07-10Bibliographically approved
Idowu, S., Åhlund, C., Schelén, O. & Brännström, R. (2013). Machine Learning in Pervasive Computing (ed.). Paper presented at . Luleå: Luleå tekniska universitet
Open this publication in new window or tab >>Machine Learning in Pervasive Computing
2013 (English)Report (Other academic)
Abstract [en]

Increase in data quantities and number of pervasive systems has resulted in many decision-making systems. Most of these systems employ Machine Learning (ML) in various practical scenarios and applications. Enormous amount of data generated by sensors can be useful in decision-making systems. The rising number of sensor driven pervasive systems presents interesting research areas on how to adapt and apply existing ML techniques effectively to the domain of pervasive computing. In the face of data deluge, ML has proved viable in many application areas such as data mining and self-customizing programs and could bring about great impact in the field of pervasive computing.The objective of this study is to give the underlying concepts of ML techniques that can be applied to problems in the domain of pervasive and mobile computing. The scope of this study covers the three primary types of ML, supervised, unsupervised and reinforcement learning methods. In the process of providing the fundamental knowledge of ML, we present some conceptual terms of ML and the steps required in developing ML system with a great impact on domains outside ML scope.Our findings show that previous works in the area of ubiquitous computing have successfully applied supervised learning and reinforcement learning methods. Hence, this study focuses more on supervised learning and reinforcement learning. In conclusion, we discuss some basic performance evaluation metrics and methods for obtaining reliable classifiers estimates, such as cross-validation and leave-one-out validation.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2013. p. 73
Keywords
machine learning, pervasive computing, Information technology - Computer science, Informationsteknik - Datorvetenskap
National Category
Media and Communication Technology Computer Sciences
Research subject
Mobile and Pervasive Computing; Dependable Communication and Computation Systems
Identifiers
urn:nbn:se:ltu:diva-24297 (URN)a63270b5-622b-4aa9-9165-6e2c11f50542 (Local ID)a63270b5-622b-4aa9-9165-6e2c11f50542 (Archive number)a63270b5-622b-4aa9-9165-6e2c11f50542 (OAI)
Note
Godkänd; 2013; 20130904 (samidu)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-05-09Bibliographically approved
Granlund, D. & Brännström, R. (2012). Smart city: the smart sewerage (ed.). In: (Ed.), (Ed.), Proceedings of the 37th IEEE Conference on Local Computer Networks Workshops (LCN Workshops): 6th IEEE Workshop On User MObility and VEhicular Networks. Paper presented at IEEE Conference on Local Computer Networks : 22/10/2012 - 25/10/2012 (pp. 856-859). Piscataway, NJ: IEEE Computer Society Press
Open this publication in new window or tab >>Smart city: the smart sewerage
2012 (English)In: Proceedings of the 37th IEEE Conference on Local Computer Networks Workshops (LCN Workshops): 6th IEEE Workshop On User MObility and VEhicular Networks, Piscataway, NJ: IEEE Computer Society Press , 2012, p. 856-859Conference paper, Published paper (Refereed)
Abstract [en]

This paper describes a sensor-based system for monitoring of sewer flooding. A global trend in Smart Cities is the installation of sensors for surveillance of the city infrastructure. The presented system is mounted in a number of strategic sewers for initial evaluation. In order to monitor the natural variations of the sewer (including daily variations) the system should be able to integrate into normal monitoring/alarm systems. The communication channel and mounting position (sewer well in the ground) put limitations on the system.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Computer Society Press, 2012
Series
Conference on Local Computer Networks. Proceedings, ISSN 0742-1303
National Category
Media and Communication Technology
Research subject
Mobile and Pervasive Computing
Identifiers
urn:nbn:se:ltu:diva-37654 (URN)10.1109/LCNW.2012.6424074 (DOI)2-s2.0-84874291783 (Scopus ID)bbc1545d-7b15-4016-ba78-fc5c001f7074 (Local ID)9781467321297 (ISBN)bbc1545d-7b15-4016-ba78-fc5c001f7074 (Archive number)bbc1545d-7b15-4016-ba78-fc5c001f7074 (OAI)
Conference
IEEE Conference on Local Computer Networks : 22/10/2012 - 25/10/2012
Projects
Sense Smart City
Note
Validerad; 2013; 20120915 (rbrannst)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2018-07-10Bibliographically approved
Cherkaoui, S. & Brännström, R. (2011). On-Move 2011: Message from the On-Move 2011 workshop chairs (ed.). Paper presented at . Piscataway, NJ: IEEE Computer Society Press
Open this publication in new window or tab >>On-Move 2011: Message from the On-Move 2011 workshop chairs
2011 (English)Other (Other academic)
Place, publisher, year, pages
Piscataway, NJ: IEEE Computer Society Press, 2011. p. 2
Series
Conference on Local Computer Networks. Proceedings, ISSN 0742-1303
National Category
Media and Communication Technology
Research subject
Mobile and Pervasive Computing
Identifiers
urn:nbn:se:ltu:diva-33617 (URN)10.1109/LCN.2011.6115142 (DOI)2-s2.0-84856136590 (Scopus ID)7e20a27b-f1fc-4dad-86f2-87b8279a6af4 (Local ID)978-1-61284-928-7 (ISBN)7e20a27b-f1fc-4dad-86f2-87b8279a6af4 (Archive number)7e20a27b-f1fc-4dad-86f2-87b8279a6af4 (OAI)
Note
Godkänd; 2012; 20120223 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved
Brännström, R. & Granlund, D. (2011). Sensor monitoring of bridge movement: a system architecture (ed.). In: (Ed.), (Ed.), Proceedings of The 36th IEEE Conference on Local Computer Networks (LCN): 5th IEEE Workshop On User MObility and VEhicular Networks. Paper presented at IEEE Conference on Local Computer Networks : 04/10/2011 - 07/10/2011 (pp. 797-800). : IEEE Communications Society
Open this publication in new window or tab >>Sensor monitoring of bridge movement: a system architecture
2011 (English)In: Proceedings of The 36th IEEE Conference on Local Computer Networks (LCN): 5th IEEE Workshop On User MObility and VEhicular Networks, IEEE Communications Society, 2011, p. 797-800Conference paper, Published paper (Refereed)
Abstract [en]

This paper describes a sensor-based accelerometermonitoring system for bridge monitoring. A system with 18 sensors will be mounted on a 130-meter long cable-strayed bridge that is built during the summer of 2011. In order to monitor the natural frequency of the bridge (including vibrations and damping) the system should manage accelerometer readings at 50 Hz. The communication channel, sample rate requirements and number of sensors put limitations on the system architecture.

Place, publisher, year, edition, pages
IEEE Communications Society, 2011
Series
Conference on Local Computer Networks. Proceedings, ISSN 0742-1303 ; 36
National Category
Media and Communication Technology
Research subject
Mobile and Pervasive Computing
Identifiers
urn:nbn:se:ltu:diva-29473 (URN)10.1109/LCN.2011.6115553 (DOI)2-s2.0-84856182107 (Scopus ID)2f8fdf32-72a2-465e-9ff2-7f4a97871a79 (Local ID)978-1-61284-928-7 (ISBN)2f8fdf32-72a2-465e-9ff2-7f4a97871a79 (Archive number)2f8fdf32-72a2-465e-9ff2-7f4a97871a79 (OAI)
Conference
IEEE Conference on Local Computer Networks : 04/10/2011 - 07/10/2011
Projects
Sense Smart City
Note
Validerad; 2011; 20111012 (rbrannst)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved
Åhlund, C., Börjesson, M., Pettersson, J., Brännström, R., Larsson, R., Johansson, D., . . . Andersson, K. (2010). Project: Sense Smart City. Paper presented at .
Open this publication in new window or tab >>Project: Sense Smart City
Show others...
2010 (English)Other (Other (popular science, discussion, etc.))
Abstract [en]

Sense Smart City is a Swedish project designed to conduct research, create new business opportunities and sustainably increase ICT research and innovation capability with specific objective to make urban cities/areas "smarter". The project will generate new and better ICT solutions, that instrument urban areas to gather and combine information (energy, traffic, weather, events, activities, needs and oppinions) continously as well as "on-demand". This will enable city environments to become "smarter", as more adaptive and supportive environment, for its inhabitants and visitors - people as well as organisations.

National Category
Media and Communication Technology
Research subject
Mobile and Pervasive Computing
Identifiers
urn:nbn:se:ltu:diva-36195 (URN)a674a05d-5554-41fa-aac4-f3d0ccf331cb (Local ID)a674a05d-5554-41fa-aac4-f3d0ccf331cb (Archive number)a674a05d-5554-41fa-aac4-f3d0ccf331cb (OAI)
Note

Finansieringskälla: EU research programme (public); Forskningsprogram: Mål 2; Internetadress: http://www.tillvaxtverket.se/huvudmeny/euprogram/ovrenorrland.4.21099e4211fdba8c87b800017079.html; Belopp: 26 000 000,00 Euro; Publikationer: Sensor monitoring of bridge movement: a system architecture; A context-aware application mobility approach; Smart city: the smart sewerage; Two Shades of Service Mobility: Application Mobility and Mobile E-services; Opportunistic Mobility Support for Resource Constrained Sensor Devices in Smart Cities; Status: Ended; Period: 01/08/2010 → 31/05/2014

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-06-13Bibliographically approved
Johansson, D., Åhlund, C., Brännström, R. & Andersson, K. (2009). Projekt: MOSA - mobil och öppen tjänste-access. Paper presented at .
Open this publication in new window or tab >>Projekt: MOSA - mobil och öppen tjänste-access
2009 (Swedish)Other (Other (popular science, discussion, etc.))
Abstract [sv]

Projektet ämnar till att möjliggöra uppkoppling av fler hushåll och företag till bredbandsnät, utveckla en teknisk plattform som ökar tillgång till tjänster och möjliggör mobilitet mellan olika accessnätverk. Genom att möjliggöra mobilitet kommer tjänster att vara nåbara på flera platser, mobiliteten skapar också utrymme för nya tjänster.

National Category
Media and Communication Technology
Research subject
Mobile and Pervasive Computing
Identifiers
urn:nbn:se:ltu:diva-36291 (URN)e03454a2-7680-4d0c-8add-bb3b52413819 (Local ID)e03454a2-7680-4d0c-8add-bb3b52413819 (Archive number)e03454a2-7680-4d0c-8add-bb3b52413819 (OAI)
Note

Finansieringskälla: EU research programme (public); Forskningsprogram: EUs regionala utvecklingsfond, Mål 2 Övre Norrland; Internetadress: http://www.tillvaxtverket.se; Belopp: 4 477 725,00 Svenska kronor; Publikationer: A survey of works and an identification of challenges within the field of context-awareness supported application mobility; Bandwidth efficient mobility management for heterogeneous wireless networks; A context-aware application mobility approach; Conceptually advancing "Application Mobility" towards design: applying a concept-driven approach to the design of mobile IT for home care service groups; Application Mobility: Concept and Design; Two Shades of Service Mobility: Application Mobility and Mobile E-services; Status: Avslutat; Period: 01/01/2008 → 31/12/2010

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-06-13Bibliographically approved
Åhlund, C., Wallin, S., Andersson, K. & Brännström, R. (2008). A service level model and Internet mobility monitor (ed.). Paper presented at . Telecommunications Systems, 37(1-3), 49-70
Open this publication in new window or tab >>A service level model and Internet mobility monitor
2008 (English)In: Telecommunications Systems, ISSN 1018-4864, E-ISSN 1572-9451, Vol. 37, no 1-3, p. 49-70Article in journal (Refereed) Published
Abstract [en]

Mobility is gaining a tremendous interest among Internet users and wireless access networks are increasingly being installed to enable mobile usage. Internet mobility requires solutions to move between access networks with maintained network connectivity. Seamless mobility in turn means that the experience of using a service is unaffected while being mobile. Communication in next generation networks will use multiple access technologies, creating a heterogeneous network environment. Further, roaming between network service providers may take place. To enable mobile nodes to move between access networks within as well as between network service providers with minimal disruption, nodes should be able to maintain multiple active network connections. With the usage of multihomed nodes, seamless mobility can be achieved in already installed infrastructures, not providing mobility support. Mobility in heterogeneous access networks also requires network selections that scale for services. In this article we propose an architecture where application service providers and network service providers define service levels to be used by a mobile node and its user. The user selects a service and the service level from an application service provider. When performing access network selection, information received as part of an application service level will be used to find a network that supports the service required. The performance of available access networks will be monitored and considered when making the decision. Our proposed architecture provides solutions to move flows between interfaces in real-time based on network performance, quality of service signalling to correspondent nodes, and cancellation of flows to give way for more important traffic.

National Category
Media and Communication Technology
Research subject
Mobile and Pervasive Computing
Identifiers
urn:nbn:se:ltu:diva-15568 (URN)10.1007/s11235-008-9072-6 (DOI)000255869100006 ()2-s2.0-43149102488 (Scopus ID)f19dc690-e483-11dc-b4b0-000ea68e967b (Local ID)f19dc690-e483-11dc-b4b0-000ea68e967b (Archive number)f19dc690-e483-11dc-b4b0-000ea68e967b (OAI)
Note
Validerad; 2008; 20080226 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Granlund, D., Andersson, K. & Brännström, R. (2008). Estimating network performance using low impact probing (ed.). In: (Ed.), Andreas J. Kassler (Ed.), Proceedings of the 1st Workshop on Wireless Broadband Access for Communities and Rural Developing Regions: WIRELESS4D '08. Paper presented at International Conference on "M4D" - Mobile Communication Technology for Development : 11/12/2008 - 12/12/2008.
Open this publication in new window or tab >>Estimating network performance using low impact probing
2008 (English)In: Proceedings of the 1st Workshop on Wireless Broadband Access for Communities and Rural Developing Regions: WIRELESS4D '08 / [ed] Andreas J. Kassler, 2008Conference paper, Published paper (Refereed)
Abstract [en]

This paper focuses on estimating network performance in order to make proper decisions regarding data flow path selection. The purpose is to estimate the available bandwidth without flooding the network with traffic like traditional bandwidth measurement tools such as Iperf. By using small datagrams to probe the network rather than flooding the link, delay and jitter can be measured and used for calculations. The idea is to use statistical information about the delay to make an acceptable estimation of the available bandwidth. Lntransform of delay and standard deviation of delay were found to be the most accurate parameters and provide the best correlation. Also, some network technologies have a significant difference in up and downlink delay. This can pose a problem when estimating the link performance. Therefore this paper also proposes a solution to handle measurements in asymmetrical links.

National Category
Media and Communication Technology
Research subject
Mobile and Pervasive Computing
Identifiers
urn:nbn:se:ltu:diva-32736 (URN)74fe2820-b6cc-11dd-9c2e-000ea68e967b (Local ID)74fe2820-b6cc-11dd-9c2e-000ea68e967b (Archive number)74fe2820-b6cc-11dd-9c2e-000ea68e967b (OAI)
Conference
International Conference on "M4D" - Mobile Communication Technology for Development : 11/12/2008 - 12/12/2008
Note
Godkänd; 2008; 20081120 (dangra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-01-14Bibliographically approved
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