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Publications (10 of 17) Show all publications
Laya, A. (2017). The Internet of Things in Health, Social Care, and Wellbeing. (Doctoral dissertation). Stockholm: KTH Royal Institute of Technology.
Open this publication in new window or tab >>The Internet of Things in Health, Social Care, and Wellbeing
2017 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The Internet of Things (IoT) enables opportunities to remotely sense and control objects via communication networks. We study services based on connected devices and the collaboration they generate between the ICT and the Health, Social Care and Wellbeing (HSCWB) industries.

In HSCWB, IoT can support a change from episodic treatments of illness to preventive care and wellbeing solutions. The IoT can be a supporter in cost efficient and high quality health care. The objective is to achieve healthier life years and more efficiency in health and social care. Even if the potential of IoT in HSCWB has been proven in pilot projects and small-scale solutions, the benefits and opportunities for many actors are still unclear. There is a research gap in studying the roles and business opportunities for market-driven technology-based solutions enabled by connected devices.

The research approach separates technological and business domains. On the technology side, the focus is on advances in connectivity for IoT. We present the technical details on a limitation to support IoT devices in cellular networks. We quantify the limitations in the Random Access Channel of the LTE air interface to support IoT devices. Moreover, we propose the adaptation of an access mechanism to enable massive number of simultaneous access attempt in cellular networks.

On the business side, we identify and present how the conditions of the health and social care structure in Sweden affect the establishment of IoT solutions in HSCWB. We then show how these conditions have generated three distinctive development patterns—to innovate within the public sector, to develop solutions in the private care sector, or to target the wellbeing sector to avoid regulatory setbacks.

Based on these patterns, we look closer into study cases to show how business opportunities have been addressed from a business network perspective. When deploying an IoT service, not all critical challenges can be appreciated at a single firm level. Therefore, we rely on a network-level business model framework to analyze emerging IoT services in HSCWB.

The findings suggest that IoT components can improve an existing service by automating internal working processes, or they can enable new value propositions and convenience to end users. In general terms, the collaboration can be used (i) to improve the efficiency of existing services in health and social care without an original intention to change the service offering, or (ii) to create novelty and differentiation, without affecting the internal logics of existing HSCWB services.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2017. 82 p.
Series
TRITA-ICT, 2017:15
Keyword
Internet-of-Things, Enabling ICT, Social care, Wellbeing, Business models, Business Ecosystems
National Category
Economics and Business Communication Systems Telecommunications
Research subject
Information and Communication Technology
Identifiers
urn:nbn:se:kth:diva-212548 (URN)978-91-7729-487-0 (ISBN)
Public defence
2017-09-27, Ka-Sal C (Sal Sven-Olof Öhrvik), KTH, Kistagången 16, Kista, 13:00 (English)
Opponent
Supervisors
Projects
IoT Ecosystems (VINNOVA)COIN-SWEATMTC2020M2MRISE
Note

QC 20180828

Available from: 2017-08-28 Created: 2017-08-23 Last updated: 2017-08-28Bibliographically approved
Laya, R. A., Alonso, L. & Alonso-Zarate, J. (2015). Contention resolution queues for massive machine type communications in LTE. In: 2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC): . Paper presented at 26th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2015, Hong Kong, China, 30 August 2015 through 2 September 2015 (pp. 2314-2318). Institute of Electrical and Electronics Engineers (IEEE).
Open this publication in new window or tab >>Contention resolution queues for massive machine type communications in LTE
2015 (English)In: 2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), Institute of Electrical and Electronics Engineers (IEEE), 2015, 2314-2318 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, we address the challenge of high device density performing simultaneous transmissions by proposing and evaluating a solution to efficiently handle the initial access contention for highly dense LTE networks. We present the implementation of a tree-splitting algorithm in the access procedure of LTE, which is capable to cope with high number of simultaneous arrivals. Based on simulations we show a feasible implementation capable to achieve, under certain network configuration conditions, up to 85% average access delay reduction and 40% reduction on the average energy consumption, while maintaining a consistently low blocking probability, regardless of the number of initial simultaneous access attempts.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2015
Series
IEEE International Symposium on Personal Indoor and Mobile Radio Communications Workshops-PIMRC, ISSN 2166-9570
Keyword
Machine Type Communications, Energy consumption, LTE-Advanced, Machine-to-Machine, Tree-splitting, Distributed Queuing, Random Access Procedure
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-185442 (URN)10.1109/PIMRC.2015.7343684 (DOI)000377900900427 ()2-s2.0-84958045228 (Scopus ID)978-146736782-0 (ISBN)
Conference
26th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2015, Hong Kong, China, 30 August 2015 through 2 September 2015
Funder
Wireless@kth
Note

QC 20160425

Available from: 2016-04-18 Created: 2016-04-18 Last updated: 2016-07-18Bibliographically approved
Laya, A., Alonso, L. & Alonso-Zarate, J. (2015). Efficient Contention Resolution in Highly Dense LTE Networks for Machine Type Communications. In: 2015 IEEE Global Communications Conference, GLOBECOM 2015: . Paper presented at 58th IEEE Global Communications Conference, GLOBECOM 2015, San Diego, United States, 6 December 2015 through 10 December 2015. Institute of Electrical and Electronics Engineers (IEEE), Article ID 7417669.
Open this publication in new window or tab >>Efficient Contention Resolution in Highly Dense LTE Networks for Machine Type Communications
2015 (English)In: 2015 IEEE Global Communications Conference, GLOBECOM 2015, Institute of Electrical and Electronics Engineers (IEEE), 2015, 7417669Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, we propose a solution to efficiently handle the initial access contention for highly dense LTE networks, which still represents a challenge in terms of the high number of devices associated to Machine Type Communications. The analysis is based on the fact that, as the radius of a LTE cell is larger, the number of available preambles generated from a single root sequence is reduced. The current access mechanism, based on frame-slotted ALOHA, does not operate efficiently under these conditions, negatively affecting the access delay and collision probability. We show how the access procedure can be improved by implementing tree-splitting algorithms in order to cope with high number of simultaneous arrivals in large cells, above 5 km in radius. The implementation achieves as much as 85% reduction on the access delay and 54% reduction on energy consumption for cells with radius larger than 39 km.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2015
Keyword
Long Term Evolution, queueing theory, trees (mathematics), LTE cell, access delay reduction, distributed queuing, efficient contention resolution, energy consumption reduction, highly dense LTE networks, machine type communications, tree-splitting algorithms, Delays, Electronic mail, Energy consumption, Performance evaluation, Proposals, Synchronization, Uplink
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-185441 (URN)10.1109/GLOCOM.2015.7417669 (DOI)000382389304083 ()2-s2.0-84964824180 (Scopus ID)978-1-4799-5952-5 (ISBN)
Conference
58th IEEE Global Communications Conference, GLOBECOM 2015, San Diego, United States, 6 December 2015 through 10 December 2015
Funder
Wireless@kth
Note

QC 20161122

Available from: 2016-04-18 Created: 2016-04-18 Last updated: 2017-08-23Bibliographically approved
Laya, A., Alonso, L., Alonso-Zarate, J. & Dohler, M. (2015). Green MTC, M2M, Internet of Things. In: Konstantinos Samdanis, Peter Rost, Andreas Maeder, Michela Meo and Christos Verikoukis (Ed.), Green Communications: Principles, Concepts and Practice (pp. 217-236). John Wiley & Sons.
Open this publication in new window or tab >>Green MTC, M2M, Internet of Things
2015 (English)In: Green Communications: Principles, Concepts and Practice / [ed] Konstantinos Samdanis, Peter Rost, Andreas Maeder, Michela Meo and Christos Verikoukis, John Wiley & Sons, 2015, 217-236 p.Chapter in book (Refereed)
Abstract [en]

The capability of having any type of object interconnected and Internet-connected creates an unprecedented access and exchange of information that has been baptized as the Internet of Things (IoT). With the advancement of integrated technologies, improved batteries, and electronic miniaturization, everyday things will be equipped with sensors and microprocessors to collect information around them and execute smart applications. In addition, they will be able to communicate with each other. The IoT has the potential to revolutionize innovations; create new products, services, business; and reshape consumer’s behavior. IoT represents a major player for the future of Information and Communications Technologies (ICT).The development of the IoT must be environment friendly. ICT have shown to be a key contributor to global warming and environmental pollution; it is predicted that the global greenhouse gas (GHG) emissions from ICT will account for 12% of all emissions by 2020 at a growth rate of 6% per year. Therefore, it is mandatory to develop environmentally friendly - or “green” - technologies for the IoT, and ICT in general.Machine-to-Machine (M2M) communications constitute a fundamental part of the IoT. The term M2M refers to the exchange of data between two or more entities, objects, or machines that do not necessarily need human interaction. The envisioned market for such kind of communications is broader than the one traditional human-based communications in terms of number of users and variety of applications. Some forecasts predict figures up to 50 billion machines that will be connecting to communication networks by 2020. This is a very big number compared to the entire world population of around 7 billion people. Therefore, there are some challenges that need to be addressed in order to fully supportM2Mservices in current communication networks. From the technical point of view, M2M communications are substantially different from Human-to-Human (H2H) communications. For example, network operators should provide communication services at low cost in order to face the low Average Revenue Per User (ARPU). Despite the large number of expected M2M connections, most of them will generate very little and infrequent data traffic. Communication networks shall also provide suitable congestion and overload control solutions in order to handle a huge number of simultaneous connections. Features such as low mobility, time-controlled data delivery, group-based policing and addressing, low connection delays, and a wide variety of Quality of Service requirements are among other challenges that need to be addressed. All of them must have the “green” concept embedded. In order to ensure that devices can operate autonomously for years or even decades without human intervention, it is necessary to provide networks with highly efficient communication protocols. This is the main focus of this chapter.The European Telecommunications Standards Institute (ETSI) created in 2009 a dedicated technical committee to identify key M2M use cases, understand the service requirements, and promote standards for the complete end-to-end M2M functional architecture. Later, in 2012, the global One M2M project was also established by ETSI, with other international standardization bodies, in order to define M2M standards that can accelerate the deployment and success of M2M applications.

Place, publisher, year, edition, pages
John Wiley & Sons, 2015
Keyword
access network, adaptive modulation and coding, cellular networks, cooperative communications, discontinuous reception, green machine-type communications, internet of things, low-mobility-based optimizations, machine-to-machine communication, uplink power control
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-185447 (URN)10.1002/9781118759257.ch11 (DOI)9781118759257 (ISBN)
Note

QC 20160425

Available from: 2016-04-18 Created: 2016-04-18 Last updated: 2016-04-25Bibliographically approved
Shariatmadari, H., Ratasuk, R., Iraji, S., Laya, A., Taleb, T., Jaentti, R. & Ghosh, A. (2015). Machine-type communications: current status and future perspectives toward 5G systems. IEEE Communications Magazine, 53, 10-17.
Open this publication in new window or tab >>Machine-type communications: current status and future perspectives toward 5G systems
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2015 (English)In: IEEE Communications Magazine, ISSN 0163-6804, E-ISSN 1558-1896, Vol. 53, 10-17 p.Article in journal (Refereed) Published
Abstract [en]

Machine-type communications (MTC) enables a broad range of applications from mission-critical services to massive deployment of autonomous devices. To spread these applications widely, cellular systems are considered as a potential candidate to provide connectivity for MTC devices. The ubiquitous deployment of these systems reduces network installation cost and provides mobility support. However, based on the service functions, there are key challenges that currently hinder the broad use of cellular systems for MTC. This article provides a clear mapping between the main MTC service requirements and their associated challenges. The goal is to develop a comprehensive understanding of these challenges and the potential solutions. This study presents, in part, a roadmap from the current cellular technologies toward fully MTC-capable 5G mobile systems.

National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-175506 (URN)10.1109/MCOM.2015.7263367 (DOI)000361677400005 ()2-s2.0-84960130235 (Scopus ID)
Note

QC 20151022

Available from: 2015-10-22 Created: 2015-10-16 Last updated: 2017-12-01Bibliographically approved
Laya, A., Alonso, L., Chatzimisios, P. & Alonso-Zarate, J. (2015). Massive access in the Random Access Channel of LTE for M2M communications: An energy perspective. In: 2015 IEEE International Conference on Communication Workshop, ICCW 2015: . Paper presented at IEEE International Conference on Communication Workshop, ICCW 2015, 8 June 2015 through 12 June 2015 (pp. 1452-1457). IEEE conference proceedings.
Open this publication in new window or tab >>Massive access in the Random Access Channel of LTE for M2M communications: An energy perspective
2015 (English)In: 2015 IEEE International Conference on Communication Workshop, ICCW 2015, IEEE conference proceedings, 2015, 1452-1457 p.Conference paper, Published paper (Refereed)
Abstract [en]

The capacity limits of the Random Access Channel (RACH) of Long Term Evolution (LTE) for highly dense Machine-to-Machine communications are studied in this paper. We consider the case study when a high number of devices attempt to transmit information to the same base station in a very short period of time. Simulations have been performed considering several parameter configurations related to the random access procedure of LTE. The energy consumption is used as a primordial metric to compare any improvement regarding the random access procedure in future releases, in order to evaluate the impact on the battery lifetime of autonomous devices.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2015
Keyword
Energy Efficiency, LTE, Machine-to-Machine, Random Access Channel, Automation, Energy utilization, Mobile telecommunication systems, Wireless telecommunication systems, Autonomous devices, Battery lifetime, Energy perspectives, M2m communications, Machine to machines, Machine-to-machine communications, Long Term Evolution (LTE)
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-181640 (URN)10.1109/ICCW.2015.7247383 (DOI)000380459900237 ()2-s2.0-84947777529 (Scopus ID)9781467363051 (ISBN)
Conference
IEEE International Conference on Communication Workshop, ICCW 2015, 8 June 2015 through 12 June 2015
Note

QC 20160314

Available from: 2016-03-14 Created: 2016-02-02 Last updated: 2016-09-23Bibliographically approved
Laya, A., Sundquist, M. & Markendahl, J. (2015). Motivation, Regulation And Actor Constellations - Experiences From A Multidisciplinary Research Project On Health And Wellbeing As Part Of The Internet Of Things. In: : . Paper presented at 26th European Regional Conference of the International Telecommunications Society (ITS). Leibniz Information Centre for Economics.
Open this publication in new window or tab >>Motivation, Regulation And Actor Constellations - Experiences From A Multidisciplinary Research Project On Health And Wellbeing As Part Of The Internet Of Things
2015 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Internet of Things is an inherently multi-disciplinary area, as mobile connectivity, sensor device technologies and cloud solutions make strong impact in a multitude of applications in diverse sectors. In this paper we study some technical solutions, business models and behavior aspects of IoT in a Health and Wellbeing context. The work is based on an ongoing research project initiated by a wireless research center. This project includes two startup-up companies that are developing services based on connected devices. As part of the evaluation activities, the project counts with the collaboration of the largest nonprofit training organization in Sweden. As part of the research project, a prototype application is developed for training. Leveraging on the insights related to the individual motivational aspects, collected from an end-user study on motivational and adoptability aspects of Internet of Things in a workout context. In order to better understand the context on which services are provided, an ecosystem analysis is elaborated in order to highlight the differences between the healthcare and wellbeing contexts.

Place, publisher, year, edition, pages
Leibniz Information Centre for Economics, 2015
Series
26th European Regional Conference of the International Telecommunications Society (ITS), Madrid, Spain, 24-27 June 2015
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-185439 (URN)
Conference
26th European Regional Conference of the International Telecommunications Society (ITS)
Funder
Wireless@kth
Note

QC 20160425

Available from: 2016-04-18 Created: 2016-04-18 Last updated: 2016-04-25Bibliographically approved
Laya, A., Alonso, L., Chatzimisios, P. & Alonso-Zarate, J. (2015). Reliable Machine-to-Machine Multicast Services with Multi-Radio Cooperative Retransmissions. Journal on spesial topics in mobile networks and applications, 20(6), 734-744.
Open this publication in new window or tab >>Reliable Machine-to-Machine Multicast Services with Multi-Radio Cooperative Retransmissions
2015 (English)In: Journal on spesial topics in mobile networks and applications, ISSN 1383-469X, E-ISSN 1572-8153, Vol. 20, no 6, 734-744 p.Article in journal (Refereed) Published
Abstract [en]

The 3GPP is working towards the definition of service requirements and technical solutions to provide support for energy-efficient Machine Type Communications (MTC) in the forthcoming generations of cellular networks. One of the envisioned solutions consists in applying group management policies to clusters of devices in order to reduce control signaling and improve upon energy efficiency, e.g., multicast Over-The-Air (OTA) firmware updates. In this paper, a Multi-Radio Cooperative Retransmission Scheme is proposed to efficiently carry out multicast transmissions in MTC networks, reducing both control signaling and improving energy-efficiency. The proposal can be executed in networks composed by devices equipped with multiple radio interfaces which enable them to connect to both a cellular access network, e.g., LTE, and a short-range MTC area network, e.g., Low-Power Wi-Fi or ZigBee, as foreseen by the MTC architecture defined by ETSI. The main idea is to carry out retransmissions over the M2M area network upon error in the main cellular link. This yields a reduction in both the traffic load over the cellular link and the energy consumption of the devices. Computer-based simulations with ns-3 have been conducted to analyze the performance of the proposed scheme in terms of energy consumption and assess its superior performance compared to non-cooperative retransmission schemes, thus validating its suitability for energy-constrained MTC applications.

Place, publisher, year, edition, pages
Springer-Verlag New York, 2015
Keyword
Machine-to-Machine, Machine Type Communications, Multi-radio cooperation, Cooperative ARQ, Energy efficiency
National Category
Computer Sciences Telecommunications
Identifiers
urn:nbn:se:kth:diva-179590 (URN)10.1007/s11036-015-0575-6 (DOI)000365182800005 ()2-s2.0-84947484574 (Scopus ID)
Note

QC 20160112

Available from: 2016-01-12 Created: 2015-12-17 Last updated: 2018-01-10Bibliographically approved
Laya, A., Wang, K., Alonso, L., Alonso-Zarate, J. & Markendahl, J. (2015). Supporting Machine-to-Machine Communications in Long-Term Evolution Networks. In: Anton-Haro, Carles; Dohler, Mischa (Ed.), Machine-to-machine (M2M) Communications: Architecture, Performance and Applications (pp. 109-129). Woodhead Publishing.
Open this publication in new window or tab >>Supporting Machine-to-Machine Communications in Long-Term Evolution Networks
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2015 (English)In: Machine-to-machine (M2M) Communications: Architecture, Performance and Applications / [ed] Anton-Haro, Carles; Dohler, Mischa, Woodhead Publishing , 2015, 109-129 p.Chapter in book (Refereed)
Abstract [en]

Abstract This chapter describes key challenges that must be faced to turn long-term evolution (LTE) into a suitable technology for machine-to-machine (M2M) and machine-type communications (MTC). In particular, the challenges dealt with in this chapter relate to managing a large number of devices, attaining very low energy consumption, ensuring low-complexity protocols to bring down the cost of devices, and extending coverage to facilitate one-hop transmissions. Beyond being technically feasible, network operators must adopt network optimization; therefore, a techno-economic perspective is presented in this chapter as well. Business-related requirements and implications that emerge from the traffic mix between humans and machines are covered, including scalability and deployment cost issues, as well as migration options from current solutions.

Place, publisher, year, edition, pages
Woodhead Publishing, 2015
Keyword
Techno-economic challenges, Device cost, Business roles, Technology migration
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-185446 (URN)10.1016/B978-1-78242-102-3.00007-1 (DOI)978-1-78242-102-3 (ISBN)
Note

QC 20160425

Available from: 2016-04-18 Created: 2016-04-18 Last updated: 2016-04-25Bibliographically approved
Laya, A., Ghanbari, A. & Markendahl, J. (2015). Tele-economics in MTC: what numbers would not show. EAI Endorsed Transactions on Internet of Things, 1(1).
Open this publication in new window or tab >>Tele-economics in MTC: what numbers would not show
2015 (English)In: EAI Endorsed Transactions on Internet of Things, ISSN 2414-1399, Vol. 1, no 1Article in journal, Editorial material (Refereed) Published
Abstract [en]

This paper elaborates on the relevance of Tele-Economic research to understand the effect that Machine-Type Commu- nications (MTC) has on different markets and also the market forces affecting the adoption of services based on MTC. The paper is presented in a tutorial form, offering concept and definitions of economic terms that are gaining relevance in the technical community in the MTC context. The concept of services is further analysed in as a change in the tele- communication industry mind-set in order to tap into the economic value of MTC in the realization of the Internet-of- Things. Finally, insights are presented looking forward into the relevance of Tele-Economic research for 5G.

Keyword
Tele-Economic research, service enablement, Machine Type Communication, Internet-of-Things
National Category
Telecommunications
Research subject
SRA - ICT
Identifiers
urn:nbn:se:kth:diva-181041 (URN)10.4108/eai.26-10-2015.150596 (DOI)
Note

QC 20160219

Available from: 2016-01-27 Created: 2016-01-27 Last updated: 2016-08-15Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-5009-723X

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