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Is Spectrum Sharing in the Radar Bands Commercially Attractive?: A Regulatory and Business Overview
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.ORCID iD: 0000-0001-7642-3067
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). KTH, School of Information and Communication Technology (ICT), Centres, Center for Wireless Systems, Wireless@kth.ORCID iD: 0000-0003-4986-6123
(English)In: Telecommunications Policy, ISSN 0308-5961, E-ISSN 1879-3258Article in journal (Other academic) Submitted
Abstract [en]

The need to meet users’ expectations in the ”mobile data avalanche” represents a significant challenge for mobile networks operators (MNOs). More spectrum is a natural way to meet these requirements in a cost and time-efficient way; but new, exclusively licensed, spectrum is increasingly hard to come by. Instead, vertical spectrum sharing has been discussed as a potential solution for finding additional spectrum for mobile communications. In this paper, we focus on vertical spectrum sharing in the radar bands for providing short-range wireless access, e.g. indoors and in ”hotspots” that ”offload” mobile traffic demand. We propose a methodology for dealing with the technical, regulatory and business aspects of deploying large-scale wireless networks. Moreover, we identify the following criteria for achieving business success: spectrum availability, availability of low-cost end user devices, system scalability in terms of number of concurrently used devices and finally, the ability to guarantee a quality of service for the users.

Our technical availability assessment has identified geo-location database support as necessary technical enabler and detect-and-avoid mechanism as a beneficial technical enabler for improving sharing conditions. Therefore, we propose a sharing mechanism based on three components: a central spectrum manager witha geo-location database controlling the aggregate interference, a spectrum sensing mechanism and a fast feedback between the radars and the central spectrum manager. Moreover, Licensed Shared Access (LSA) was found to be the suitable regulatory framework to support the proposed sharing mechanism and regulatory policies in real-life implementation. Our business feasibility assessment concludes that there is enough spectrum available for indoor and hotspots communication in urban areas in the radar bandsto make a large scale system commercially viable. Service quality can be guaranteedand there is a strong potential to construct low-cost devices. Uncertainties do, however, remain regarding the spectrum access cost.

Keyword [en]
radar bands, short range communication, regulatory framework, business analysis.
National Category
Telecommunications Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-145337OAI: oai:DiVA.org:kth-145337DiVA: diva2:717744
Note

QS 2014

Available from: 2014-05-16 Created: 2014-05-16 Last updated: 2017-12-05Bibliographically approved
In thesis
1. On the Deployment of Large-Scale High-Capacity Wireless Systems with Secondary Spectrum Access
Open this publication in new window or tab >>On the Deployment of Large-Scale High-Capacity Wireless Systems with Secondary Spectrum Access
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The avalanche in mobile data consumption represents a big challenge for mobile networks operators and national regulators. This thesis focuses on finding additional spectrum to meet this demand in a cost-efficient way by considering shared spectrum access. Our studies aim at identifying key factors in achieving large-scale business success,quantifying the spectrum availability and identifying suitable regulatory/sharing polices for large-scale secondary access in the aeronautical and radar bands. This thesis proposes a research methodology, that considers business, technical and regulatory aspects involved in assessing commercial viability of large-scale deployment of wireless networks, employing vertical spectrum sharing in the aeronautical and radar bands. We pinpoint the following criteria which are critical in ensuring business success:spectrum availability, radio technology availability, low-cost end-userdevices, system scalability and quality of service. Our investigation centers on the technical aspects of these criteria, and thus deals mainly with the assessment of spectrum availability. The availability of spectrum opportunities is found to be ample for adjacent channel usage despite the strict requirements of the radar receiver. However, it is alsovery location-dependent and mostly non-contiguous.Finally, with regard to the regulatory aspects, our results show thatapplying regulatory policies, especially to the deployment of secondary users, can boost availability in cities or urban areas where the capacity demand is high. In addition, Licensed Shared Access (LSA) is identified as a suitable regulatory framework to meet tough protection criteria ofthe radar receivers and to apply the selected regulatory policies to improve exploitation of sharing opportunities. Based on our results and analysis, we conclude that there is a significant amount of spectrum opportunities for large-scale secondary access in the aeronautical and radar bands from the technical point of view. However, the commercial viability of secondary spectrum access is still undetermined giventhe remaining uncertainties regarding its total cost and the exact time needed for relevant technology to become available. Moreover, thereis no single answer to the commercial viability since it will most likelydepend on the country or region in question, which affects the spectrum availability, which in turn is a key criterion for business success. Futurework should therefore strive to clarify these uncertainties and to identify new responsibilities for all the entities involved in the LSA framework. Moreover, a quantitative evaluation would be needed to obtain more explicit conclusions on the business viability.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2014. viii, 58 p.
Series
TRITA-ICT-COS, ISSN 1653-6347 ; 14:04
National Category
Telecommunications Communication Systems
Research subject
SRA - ICT
Identifiers
urn:nbn:se:kth:diva-144861 (URN)
Public defence
2014-05-26, Sal D, Forum Building, Isafjordsgatan 39, Kista, 14:00 (English)
Opponent
Supervisors
Funder
ICT - The Next Generation
Note

QC 20140519

Available from: 2014-05-19 Created: 2014-04-29 Last updated: 2014-05-19Bibliographically approved

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