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Publications (10 of 47) Show all publications
Tanyingyong, V., Olsson, R., Hidell, M., Sjödin, P. & Ahlgren, B. (2018). Implementation and Deployment of an Outdoor IoT-based Air Quality Monitoring Testbed. In: 2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings: . Paper presented at 2018 IEEE Global Communications Conference, GLOBECOM 2018; Abu Dhabi National Exhibition Centre (ADNEC)Abu Dhabi; United Arab Emirates; 9 December 2018 through 13 December 2018. Institute of Electrical and Electronics Engineers (IEEE), Article ID 8647287.
Open this publication in new window or tab >>Implementation and Deployment of an Outdoor IoT-based Air Quality Monitoring Testbed
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2018 (English)In: 2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2018, article id 8647287Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents an outdoor IoT-based air quality monitoring testbed deployed in the city of Uppsala, Sweden. Our IoT sensing unit is designed and developed using low-cost hardware components and open source software, which makes it easy to replicate. We demonstrate that it can serve as an affordable solution for real-time measurements and has potentials to complement traditional monitoring to cover larger areas. We use low-power communication based on IEEE 802.15.4, RPL, and MQTT, and achieve high end-to-end delivery ratio (>98%) in an outdoor setting. Moreover, we carry out network analysis of our testbed and provide detailed insights into its characteristics.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
Series
IEEE Global Communications Conference, ISSN 2334-0983
Keywords
IoT, RPL, Testbed, Implementation and Deployment, Measurements
National Category
Communication Systems
Research subject
Telecommunication
Identifiers
urn:nbn:se:kth:diva-235420 (URN)10.1109/GLOCOM.2018.8647287 (DOI)000465774300139 ()2-s2.0-85063521242 (Scopus ID)978-1-5386-4727-1 (ISBN)
Conference
2018 IEEE Global Communications Conference, GLOBECOM 2018; Abu Dhabi National Exhibition Centre (ADNEC)Abu Dhabi; United Arab Emirates; 9 December 2018 through 13 December 2018
Funder
Vinnova, 2015-00347
Note

QC 20181213

Available from: 2018-09-25 Created: 2018-09-25 Last updated: 2019-06-12Bibliographically approved
Manjate, J. A., Hidell, M. & Sjödin, P. (2018). Network Energy Efficiency through Matching and Reconfiguration. In: IEEE 2018 INTERNATIONAL CONGRESS ON CYBERMATICS / 2018 IEEE CONFERENCES ON INTERNET OF THINGS, GREEN COMPUTING AND COMMUNICATIONS, CYBER, PHYSICAL AND SOCIAL COMPUTING, SMART DATA, BLOCKCHAIN, COMPUTER AND INFORMATION TECHNOLOGY: . Paper presented at IEEE 2018 INTERNATIONAL CONGRESS ON CYBERMATICS / 2018 IEEE CONFERENCES ON INTERNET OF THINGS, GREEN COMPUTING AND COMMUNICATIONS, CYBER, PHYSICAL AND SOCIAL COMPUTING, SMART DATA, BLOCKCHAIN, COMPUTER AND INFORMATION TECHNOLOGY (pp. 244-250). IEEE
Open this publication in new window or tab >>Network Energy Efficiency through Matching and Reconfiguration
2018 (English)In: IEEE 2018 INTERNATIONAL CONGRESS ON CYBERMATICS / 2018 IEEE CONFERENCES ON INTERNET OF THINGS, GREEN COMPUTING AND COMMUNICATIONS, CYBER, PHYSICAL AND SOCIAL COMPUTING, SMART DATA, BLOCKCHAIN, COMPUTER AND INFORMATION TECHNOLOGY, IEEE , 2018, p. 244-250Conference paper, Published paper (Refereed)
Abstract [en]

Energy efficiency has become a major concern in the design and operation of fixed networks. Energy-Efficient Ethernet (EEE) came as a response to reduce the energy consumption of Ethernet technology. The performance of EEE depends on the link utilization and may degrade when the utilization increases. This is especially true when an energy-aware routing (EAR) protocol is deployed on top of EEE as it tends to aggregate traffic over a subset of links, thereby increasing their utilization. This behavior introduces a tradeoff between EEE and EAR. As network traffic patterns change frequently, it requires a significant effort to configure the EAR protocol on an EEE network in order to reduce the downside effects of the tradeoff, thus benefiting from both the EEE and EAR energy efficiency. In this work, we propose a network matching and reconfiguration algorithm (NetRec), which dynamically adapts the topology control (ESTOP) settings of an EEE network to increase energy savings. Our reasoning is that larger energy savings can be obtained if the network topology is dynamically reconfigured according to traffic demand. NetRec is designed in the context of Software-Defined Networking (SDN). We evaluate NetRec's energy performance in networks of different sizes under varying traffic conditions.

Place, publisher, year, edition, pages
IEEE, 2018
Keywords
Energy-Efficient Ethernet, Energy saving topology control, software-defined networks, network reconfiguration
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-257836 (URN)10.1109/Cybermatics_2018.2018.00070 (DOI)000481634500036 ()2-s2.0-85067862612 (Scopus ID)
Conference
IEEE 2018 INTERNATIONAL CONGRESS ON CYBERMATICS / 2018 IEEE CONFERENCES ON INTERNET OF THINGS, GREEN COMPUTING AND COMMUNICATIONS, CYBER, PHYSICAL AND SOCIAL COMPUTING, SMART DATA, BLOCKCHAIN, COMPUTER AND INFORMATION TECHNOLOGY
Note

QC 20190905

Available from: 2019-09-05 Created: 2019-09-05 Last updated: 2019-09-05Bibliographically approved
Manjate, J. A., Hidell, M. & Sjodin, P. (2015). Energy-efficient networks under coordinated and uncoordinated sleeping approaches. In: 2015 23rd International Conference on Software, Telecommunications and Computer Networks, SoftCOM 2015: . Paper presented at 23rd International Conference on Software, Telecommunications and Computer Networks, SoftCOM 2015, 16 September 2015 through 18 September 2015 (pp. 1-5). IEEE
Open this publication in new window or tab >>Energy-efficient networks under coordinated and uncoordinated sleeping approaches
2015 (English)In: 2015 23rd International Conference on Software, Telecommunications and Computer Networks, SoftCOM 2015, IEEE , 2015, p. 1-5Conference paper, Published paper (Refereed)
Abstract [en]

Wired IP networks handle the bulk of today's communication. These networks are built with over-provisioning and redundancy of devices to support critical activities. However, the activities can vary significantly, resulting in unused network online waste of power. In this study, we examine two existing power-saving approaches for wired IP networks: i) uncoordinated sleeping and (ii) coordinated sleeping. The uncoordinated and coordinated sleeping algorithms investigated are respectively Energy Efficient Ethernet (EEE) and Energy-Aware Routing (EAR) for green OSPF. In addition, we investigate the combination of coordinated and uncoordinated sleeping algorithms, EEE and EAR for green OSPF. The energy performance of the two algorithms and their combination is evaluated in two networks of different dimensions under varying traffic loads. The investigation shows that EEE, EAR for green OSPF and the combination significantly reduce the energy consumption of a network. However, the highest peak of energy conservation is achieved when EAR for green OSPF is activated in an EEE network during lower traffic load periods and deactivated during high traffic load periods. © 2015 University of Split, FESB.

Place, publisher, year, edition, pages
IEEE, 2015
Keywords
coordinated, EAR for green OSPF, EEE, power, uncoordinated, Computer networks, Energy utilization, Power management, Power management (telecommunication), Sleep research, Critical activities, Energy efficient ethernets (EEE), Energy efficient networks, Energy-aware routing, Energy efficiency
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-186845 (URN)10.1109/SOFTCOM.2015.7314089 (DOI)000376996200001 ()2-s2.0-84958621250 (Scopus ID)9789532900569 (ISBN)
Conference
23rd International Conference on Software, Telecommunications and Computer Networks, SoftCOM 2015, 16 September 2015 through 18 September 2015
Note

QC 20160530

Available from: 2016-05-30 Created: 2016-05-13 Last updated: 2016-06-28Bibliographically approved
Manjate, J., Hidell, M. & Sjödin, P. (2015). Energy-Efficient Networks under Coordinated andUncoordinated Sleeping Approaches. In: : . Paper presented at International Conference on Software, Telecommunications and Computer Networks (SoftCOM) (pp. 1-5). IEEE conference proceedings, 23rd
Open this publication in new window or tab >>Energy-Efficient Networks under Coordinated andUncoordinated Sleeping Approaches
2015 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Wired IP networks handle the bulk of today’scommunication. These networks are built with over-provisioningand redundancy of devices to support critical activities. However,the activities can vary significantly, resulting in unused networkonline waste of power. In this study, we examine two existingpower-saving approaches for wired IP networks: i) uncoordinatedsleeping and (ii) coordinated sleeping. The uncoordinated andcoordinated sleeping algorithms investigated are respectively En-ergy Efficient Ethernet (EEE) and Energy-Aware Routing (EAR)for green OSPF. In addition, we investigate the combination ofcoordinated and uncoordinated sleeping algorithms, EEE andEAR for green OSPF. The energy performance of the twoalgorithms and their combination is evaluated in two networksof different dimensions under varying traffic loads.The investigation shows that EEE, EAR for green OSPF andthe combination significantly reduce the energy consumption ofa network. However, the highest peak of energy conservationis achieved when EAR for green OSPF is activated in an EEEnetwork during lower traffic load periods and deactivated duringhigh traffic load periods.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2015
Keywords
power, coordinated, uncoordinated, EEE, EAR for green OSPF
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-196552 (URN)
Conference
International Conference on Software, Telecommunications and Computer Networks (SoftCOM)
Note

QC 20170110

Available from: 2016-11-16 Created: 2016-11-16 Last updated: 2017-02-24Bibliographically approved
Söderman, P., Grinnemo, K.-J., Hidell, M. & Sjödin, P. (2015). Mind the SmartGap: A Buffer Management Algorithm For Delay Tolerant Wireless Sensor Networks. In: Tarek Abdelzaher, Nuno Pereira, Eduardo Tovar (Ed.), Wireless Sensor Networks: 12th European Conference, EWSN 2015, Porto, Portugal, February 9-11, 2015. Proceedings. Paper presented at 12th European Conference on Wireless Sensor Networks (EWSN 2015), Porto, Portugal, February 9-11, 2015 (pp. 104-119). Springer, 8965
Open this publication in new window or tab >>Mind the SmartGap: A Buffer Management Algorithm For Delay Tolerant Wireless Sensor Networks
2015 (English)In: Wireless Sensor Networks: 12th European Conference, EWSN 2015, Porto, Portugal, February 9-11, 2015. Proceedings / [ed] Tarek Abdelzaher, Nuno Pereira, Eduardo Tovar, Springer, 2015, Vol. 8965, p. 104-119Conference paper, Published paper (Refereed)
Abstract [en]

Limited memory capacity is one of the major constraints in Delay Tolerant Wireless Sensor Networks. Efficient management of the memory is critical to the performance of the network. This paper proposes a novel buffer management algorithm, SmartGap, a Quality of Information (QoI) targeted buffer management algorithm. That is, in a wireless sensor network that continuously measures a parameter which changes over time, such as temperature, the value of a single packet is governed by an estimation of its contribution to the recreation of the original signal. Attractive features of SmartGap include a low computational complexity and a simplified reconstruction of the original signal. An analysis and simulations in which the performance of SmartGap is compared with the performance of several commonly used buffer management algorithms in wireless sensor networks are provided in the paper. The simulations suggest that SmartGap indeed provides significantly improved QoI compared the other evaluated algorithms.

Place, publisher, year, edition, pages
Springer, 2015
National Category
Telecommunications
Research subject
Computer Science
Identifiers
urn:nbn:se:kth:diva-166705 (URN)10.1007/978-3-319-15582-1_7 (DOI)000357677300007 ()978-3-319-15582-1 (ISBN)978-3-319-15581-4 (ISBN)
Conference
12th European Conference on Wireless Sensor Networks (EWSN 2015), Porto, Portugal, February 9-11, 2015
Funder
Wireless@kth
Note

QC 20150605

Available from: 2015-05-13 Created: 2015-05-13 Last updated: 2016-04-06Bibliographically approved
Turull, D., Hidell, M. & Sjödin, P. (2014). Performance evaluation of openflow controllers for network virtualization. In: High Performance Switching and Routing (HPSR), 2014 IEEE 15th International Conference on: . Paper presented at IEEE HPSR 2014,1-4 July 2014,Vancouver, BC, USA (pp. 50-56). IEEE conference proceedings
Open this publication in new window or tab >>Performance evaluation of openflow controllers for network virtualization
2014 (English)In: High Performance Switching and Routing (HPSR), 2014 IEEE 15th International Conference on, IEEE conference proceedings, 2014, p. 50-56Conference paper, Published paper (Refereed)
Abstract [en]

This paper investigates OpenFlow performance, focusing on how the delay between switch and OpenFlow controller can impact the performance of a network. We use open-source controllers that support network virtualization to evaluate how such delay impacts ICMP, TCP and UDP traffic. We compare the controllers’ flow set-up strategies and we conduct several experiments to compare their TCP and UDP performance. In ad-dition, we introduce a new metric to measure UDP packet losses at the beginning of the flow. The results of the measurements indicate that there are large differences in performance between controllers, and that performance depends on switch-controller delay and flow set-up strategy.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2014
Keywords
computer network performance evaluation;delays;open systems;telecommunication control;telecommunication traffic;transport protocols;virtualisation;ICMP traffic;OpenFlow controllers;SDN architecture;TCP traffic;UDP packet losses;UDP traffic;flow set-up strategy;network virtualization;open-source controllers;performance evaluation;software defined networking;switch delay;switch-controller delay;Delays;Loss measurement;Ports (Computers);Switches;Virtualization
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-156895 (URN)10.1109/HPSR.2014.6900881 (DOI)000361018300009 ()2-s2.0-84908568521 (Scopus ID)
Conference
IEEE HPSR 2014,1-4 July 2014,Vancouver, BC, USA
Funder
EU, FP7, Seventh Framework Programme, 257448
Note

QC 20141209

Available from: 2014-12-04 Created: 2014-12-04 Last updated: 2016-04-28Bibliographically approved
Tanyingyong, V., Rathore, M. S., Hidell, M. & Sjödin, P. (2013). Carenet: An Architecture for Home-based Healthcare Services. In: SNCNW 2013: . Paper presented at 9th Swedish National Computer Networking Workshop SNCNW 2013; Lund; 3-4 June 2013 (pp. 28-31).
Open this publication in new window or tab >>Carenet: An Architecture for Home-based Healthcare Services
2013 (English)In: SNCNW 2013, 2013, p. 28-31Conference paper, Published paper (Refereed)
Abstract [en]

Doctor shortage is a universal problem. Technologies can be used to address the issue by extending the healthcare services over the data network to virtually anywhere. In this paper, we propose Carenet architecture to extend healthcare services to the home of a patient in a robust, secure, and cost-effective manner. The prototype architecture is developed using a residential gateway (RG). The RG is built using open source software on Commodity-Off-The-Shelf (COTS) hardware. It uses low-power components with multiple power sources to provide robustness. The healthcare services are offered over a private overlay network. Linux containers are used to provide service isolation on the RG. The data is encrypted at the application level for each service to ensure confidentiality. Resilient communication is realized based on physical redundant links from two Internet connections from different ISPs. The failover time within sub-seconds time frame is achieved using our prototype RG.

National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-136356 (URN)
Conference
9th Swedish National Computer Networking Workshop SNCNW 2013; Lund; 3-4 June 2013
Note

QC 20131205

Available from: 2013-12-04 Created: 2013-12-04 Last updated: 2013-12-05Bibliographically approved
Tanyingyong, V., Rathore, M. S., Hidell, M., Sjödin, P., Pehrson, B., Jonsson, S. & Groth, K. (2013). Carenet: An Infrastructure for Home-Based Healthcare Services. In: Medicinteknikdagarna 2013: . Paper presented at Medicinteknikdagarna, 1-2 oktober 2013 i Stockholm.
Open this publication in new window or tab >>Carenet: An Infrastructure for Home-Based Healthcare Services
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2013 (English)In: Medicinteknikdagarna 2013, 2013Conference paper, Poster (with or without abstract) (Refereed)
National Category
Medical and Health Sciences Communication Systems
Identifiers
urn:nbn:se:kth:diva-138338 (URN)
Conference
Medicinteknikdagarna, 1-2 oktober 2013 i Stockholm
Note

QC 20150218

Available from: 2013-12-18 Created: 2013-12-18 Last updated: 2015-02-18Bibliographically approved
Tanyingyong, V., Olsson, R., Hidell, M., Sjödin, P. & Pehrson, B. (2013). Design and Implementation of an IoT-controlled DC-DC Converter. In: 2013 Sustainable Internet and ICT for Sustainability, SustainIT 2013: . Paper presented at 3rd International Conference on Sustainable Internet and ICT for Sustainability, SustainIT 2013; Palermo; Italy; 30 October 2013 through 31 October 2013 (pp. 6685199). IEEE
Open this publication in new window or tab >>Design and Implementation of an IoT-controlled DC-DC Converter
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2013 (English)In: 2013 Sustainable Internet and ICT for Sustainability, SustainIT 2013, IEEE , 2013, p. 6685199-Conference paper, Published paper (Refereed)
Abstract [en]

In line with the shift towards renewable energy, small-scale solar panels have become commonly available. Solar panels are intermittent energy sources producing direct current, and DC-DC converters are needed to convert between different voltage levels, both for different power loads and for storing energy. DC-DC converters typically have a very limited functionality and are statically configured for specific voltage levels. In this paper, we propose a new generation of flexible DC-DC converters with software and communication support (through Contiki and CoAP) for remote power monitoring and control. We present a prototype design and implementation of a DC-DC converter including a microprocessor, a lean operating system, and networking support. With such a DC-DC converter, controlled over the Internet, we can address various types of power and energy related issues and advance the state-of-the-art of green networked applications.

Place, publisher, year, edition, pages
IEEE, 2013
National Category
Engineering and Technology
Identifiers
urn:nbn:se:kth:diva-142596 (URN)10.1109/SustainIT.2013.6685199 (DOI)000330731100013 ()2-s2.0-84893275298 (Scopus ID)978-390188256-2 (ISBN)
Conference
3rd International Conference on Sustainable Internet and ICT for Sustainability, SustainIT 2013; Palermo; Italy; 30 October 2013 through 31 October 2013
Note

QC 20140311

Available from: 2014-03-11 Created: 2014-03-07 Last updated: 2014-03-11Bibliographically approved
Söderman, P., Eklund, J., Grinnemo, K.-J., Hidell, M. & Brunström, A. (2013). Handover in the Wild: The feasibility of vertical handover in commodity smartphones. In: Communications (ICC), 2013 IEEE International Conference on: . Paper presented at 2013 IEEE International Conference on Communications, ICC 2013; Budapest; Hungary; 9 June 2013 through 13 June 2013 (pp. 6401-6406). IEEE conference proceedings
Open this publication in new window or tab >>Handover in the Wild: The feasibility of vertical handover in commodity smartphones
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2013 (English)In: Communications (ICC), 2013 IEEE International Conference on, IEEE conference proceedings, 2013, p. 6401-6406Conference paper, Published paper (Refereed)
Abstract [en]

Today commodity mobile devices are equipped withmultiple wireless access technologies. To enable continuous connectivityit is vital that these terminals provide for vertical handover between different technologies. Particularly, they should provide a vertical handover that complies with the timeliness requirements of soft real-time applications. Considering aspects such as cost- and ease-of-deployment, application neutrality, and, not least, the emergence of transport protocols that support multi-homing such as mobile SCTP and multi-path TCP, we think it would be beneficial to handle vertical handover in thetransport layer of the mobile terminal. This paper demonstrates through several real-world experiments, the feasibility of using a lightweight vertical handover scheme in smart mobile terminals for live video streaming. The vertical handover criteria is basedon the received signal strength. Our experiments suggest that thescheme indeed provides for seamless vertical handover at walking speed – our target scenario. However, the experiments also suggest that the scheme gives significant reductions in handovertime, as compared to mobile SCTP without improvements, at higher speeds.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2013
Series
IEEE International Conference on Communications, ISSN 1550-3607
Keywords
Live video streaming, Real world experiment, Received signal strength, Seamless vertical handover, Soft real-time applications, Transport protocols, Vertical handovers, Wireless access technology
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-122409 (URN)10.1109/ICC.2013.6655635 (DOI)000349673807056 ()2-s2.0-84891348381 (Scopus ID)978-146733122-7 (ISBN)
Conference
2013 IEEE International Conference on Communications, ICC 2013; Budapest; Hungary; 9 June 2013 through 13 June 2013
Funder
VINNOVA
Note

QC 20140205. Updated from manuscript to conference paper

Available from: 2013-05-20 Created: 2013-05-20 Last updated: 2016-04-06Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-6427-4612

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