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Goodbye, ALOHA!
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.ORCID iD: 0000-0002-5009-723X
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2016 (English)In: IEEE Access, E-ISSN 2169-3536, Vol. 4, 2029-2044 p.Article in journal (Refereed) Published
Resource type
Text
Abstract [en]

The vision of the Internet of Things (IoT) to interconnect and Internet-connect everyday people, objects, and machines poses new challenges in the design of wireless communication networks. The design of medium access control (MAC) protocols has been traditionally an intense area of research due to their high impact on the overall performance of wireless communications. The majority of research activities in this field deal with different variations of protocols somehow based on ALOHA, either with or without listen before talk, i.e., carrier sensing multiple access. These protocols operate well under low traffic loads and low number of simultaneous devices. However, they suffer from congestion as the traffic load and the number of devices increase. For this reason, unless revisited, the MAC layer can become a bottleneck for the success of the IoT. In this paper, we provide an overview of the existing MAC solutions for the IoT, describing current limitations and envisioned challenges for the near future. Motivated by those, we identify a family of simple algorithms based on distributed queueing (DQ), which can operate for an infinite number of devices generating any traffic load and pattern. A description of the DQ mechanism is provided and most relevant existing studies of DQ applied in different scenarios are described in this paper. In addition, we provide a novel performance evaluation of DQ when applied for the IoT. Finally, a description of the very first demo of DQ for its use in the IoT is also included in this paper.

Place, publisher, year, edition, pages
IEEE , 2016. Vol. 4, 2029-2044 p.
Keyword [en]
Communications technology, Internet of Things, cellular networks, machine-to-machine communications, 4G mobile communication, protocols, access protocols, Bluetooth, Zigbee, radio access networks, wireless communication, RFID tags
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-189404DOI: 10.1109/ACCESS.2016.2557758ISI: 000377414800002Scopus ID: 2-s2.0-84979824014OAI: oai:DiVA.org:kth-189404DiVA: diva2:947305
Note

QC 20160707

Available from: 2016-07-07 Created: 2016-07-04 Last updated: 2017-08-23Bibliographically approved
In thesis
1. The Internet of Things in Health, Social Care, and Wellbeing
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

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