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Wireless Communication Networks for Time-critical Industrial Applications
KTH, School of Electrical Engineering and Computer Science (EECS), Network and Systems engineering.ORCID iD: 0000-0003-4158-9424
2018 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Wireless communication is of paramount importance to enable the vision of Industry 4.0. Compared to mobile communications, industrial communications pose demanding requirements in terms of ultra low latency and high reliability. Currently, for the most time-critical industrial applications, there is no available wireless solutions satisfying these latency requirements. This thesis studies effective techniques to reduce the latency for the time-critical industrial applications, especially from the Physical Layer (PHY) point of view.

The thesis is organized in two main parts. In the first part, the available methods for low latency are surveyed and analyzed in terms of end-to-end latency. It is argued that the enabling techniques should be optimized together to reduce the end-to-end latency while satisfying other requirements such as reliability and throughput. Moreover, the realistic timing constraints of different PHY algorithms, hardware, and mechanisms are derived based on the state-of-art wireless implementations. In the second part, a revision of PHY with an optimized PHY structure is proposed to reduce the latency. It is shown that a PHY with just a short one-symbol preamble and dedicated packet detection and synchronization algorithms for short packets is robust to carrier frequency offsets and false alarms by both theoretical and site experiments.

The investigations of this thesis show that revising the PHY structure/parameters is effective to reduce the packet transmission time, and further improve the latency performance of wireless communication network for time-critical industrial applications. In the future, we include the PHY results of this thesis in the investigation of the Medium Access Control (MAC), for industrial wireless communications with very low latencies.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2018.
Series
TRITA-EECS-AVL ; 2018:84
National Category
Computer and Information Sciences
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:kth:diva-239019ISBN: 978-91-7729-998-1 (print)OAI: oai:DiVA.org:kth-239019DiVA, id: diva2:1263251
Presentation
2018-12-07, V1, Teknikringen 76, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20181116

Available from: 2018-11-16 Created: 2018-11-14 Last updated: 2018-11-16Bibliographically approved
List of papers
1. Low-Latency Networking: Where Latency Lurks and How to Tame It
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2018 (English)In: Proceedings of the IEEE, ISSN 0018-9219, E-ISSN 1558-2256, p. 1-27Article in journal (Refereed) Published
Abstract [en]

While the current generation of mobile and fixed communication networks has been standardized for mobile broadband services, the next generation is driven by the vision of the Internet of Things and mission-critical communication services requiring latency in the order of milliseconds or submilliseconds. However, these new stringent requirements have a large technical impact on the design of all layers of the communication protocol stack. The cross-layer interactions are complex due to the multiple design principles and technologies that contribute to the layers' design and fundamental performance limitations. We will be able to develop low-latency networks only if we address the problem of these complex interactions from the new point of view of submilliseconds latency. In this paper, we propose a holistic analysis and classification of the main design principles and enabling technologies that will make it possible to deploy low-latency wireless communication networks. We argue that these design principles and enabling technologies must be carefully orchestrated to meet the stringent requirements and to manage the inherent tradeoffs between low latency and traditional performance metrics. We also review currently ongoing standardization activities in prominent standards associations, and discuss open problems for future research.

National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:kth:diva-239002 (URN)10.1109/JPROC.2018.2863960 (DOI)2-s2.0-85052809127 (Scopus ID)
Note

QC 20181115

Available from: 2018-11-14 Created: 2018-11-14 Last updated: 2018-11-15Bibliographically approved
2. Packet Detection by Single OFDM Symbol in URLLC for Critical Industrial Control: a Realistic Study
Open this publication in new window or tab >>Packet Detection by Single OFDM Symbol in URLLC for Critical Industrial Control: a Realistic Study
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2018 (English)In: IEEE Journal on Selected Areas in Communications, ISSN 0733-8716, E-ISSN 1558-0008Article in journal (Other academic) Submitted
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:kth:diva-239006 (URN)
Note

QC 20181115

Available from: 2018-11-14 Created: 2018-11-14 Last updated: 2018-11-15Bibliographically approved
3. Fundamental Constraints for Time-slotted MAC Design in Wireless High Performance : the Realistic Perspective of Timing
Open this publication in new window or tab >>Fundamental Constraints for Time-slotted MAC Design in Wireless High Performance : the Realistic Perspective of Timing
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2018 (English)Conference paper, Published paper (Refereed)
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:kth:diva-239018 (URN)
Conference
44th Annual Conference of the IEEE Industrial Electronics Society The IECON 2018
Note

QC 20181115

Available from: 2018-11-14 Created: 2018-11-14 Last updated: 2018-11-15Bibliographically approved

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Jiang, Xiaolin

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Citation style
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