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Performance Evaluation and Optimization of LPWA IoT Networks: A Stochastic Geometry Approach
KTH, School of Electrical Engineering and Computer Science (EECS), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). (COS)ORCID iD: 0000-0003-0125-2202
KTH, School of Electrical Engineering and Computer Science (EECS), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).ORCID iD: 0000-0003-0525-4491
2018 (English)In: 2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings, IEEE, 2018, article id 8647881Conference paper, Published paper (Refereed)
Abstract [en]

Leveraging grant-free radio access for enabling low-power wide-area (LPWA) Internet of Things (IoT) connectivity has attracted lots of attention in recent years. Regarding lack of research on LPWA IoT networks, this work is devoted to reliability modeling, battery-lifetime analysis, and operation-control of such networks. We derive the interplay amongst density of the access points, communication bandwidth, volume of traffic from heterogeneous sources, and quality of service (QoS) in communications. The presented analytical framework comprises modeling of interference from heterogeneous sources with correlated deployment locations and time-frequency asynchronous radio-resource usage patterns. The derived expressions represent the operation regions and rates in which, energy and cost resources of devices and the access network, respectively, could be traded to achieve a given level of QoS in communications. For example, our expressions indicate the expected increase in QoS by increasing number of transmitted replicas, transmit power, density of the access points, and communication bandwidth. Our results further shed light on scalability of such networks and figure out the bounds up to which, scaling resources can compensate the increase in traffic volume and QoS demand. Finally, we present an energy-optimized operation control policy for IoT devices. The simulation results confirm tightness of the derived analytical expressions, and indicate usefulness of them in planning and operation control of IoT networks.

Place, publisher, year, edition, pages
IEEE, 2018. article id 8647881
Series
IEEE Global Communications Conference, ISSN 2334-0983
Keywords [en]
5G, Coexistence, Grant-free, Reliability and durability, LPWA IoT
Keywords [fa]
نسل پنجم، اینترنت اشیا، قابلیت اطمینان، همزیستی، اتصال بدون رزرو منبع
National Category
Telecommunications
Research subject
Electrical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-232213DOI: 10.1109/GLOCOM.2018.8647881ISI: 000465774304097Scopus ID: 2-s2.0-85063453911ISBN: 978-1-5386-4727-1 (print)OAI: oai:DiVA.org:kth-232213DiVA, id: diva2:1233082
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
Note

QC 20180716

Available from: 2018-07-15 Created: 2018-07-15 Last updated: 2019-06-13Bibliographically approved

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Azari, AminCavdar, Cicek

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