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Real-Time Spectrum Access in Heterogeneous Wireless Networks: Competition, Deployment and Pricing
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
2012 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The first decade of twenty-first century has witnessed the spread of innovative wireless technologies: novel wireless network architectures and services; operations in unlicensed bands, advanced mobile devices and smartphones. All these have pondered growing demand for wireless broadband services, so that more spectra are required. Consequently,the advent of flat-rate service pricing for mobile broadband services plus continuous investments in a network infrastructure and shortage of licensed spectrum make it more difficult for current wireless operators (OPs) to financially sustain themselves in a competitive environment.

Since existing, fixed spectrum allocation (FSA), mechanism offers very limited flexibility, dynamic spectrum access from the market point of view is exploited here to support such flexibility. A framework of competitive spectrum access, where available spectrum can be leased based on the outcome of competition between heterogeneous wireless operators in a short-term fashion, is reviewed in this thesis. The main objectives are: (1) to maximize spectrum efficiency by utilizing market mechanisms in a heterogeneous setting, and (2) to identify which conditions and criteria should be applied to allow heterogeneous wireless networks to be viable in the marketplace.

Under the competitive spectrum access framework, we explore three directions to tackle these objectives for a case of a two-operators system. First, we will look at how an inter-operator competition can affect the operator profits under an asymmetry in their networks. Then, we will analyze which deployment strategies in a heterogeneous environment should be utilized. Finally, we will consider which pricing strategies can be applied by competing OPs to sustain themselves. Through analysis and extensive simulations, we show that heterogeneous access architectures and the scalable infrastructure deployment could improve not only spectrum utilization efficiency, but also facilitate viability of spectrum allocation in a competitive environment. As a conclusion, we believe that techno-economical approach used to assess a feasibility of the framework could help in the designing of future wireless systems to efficiently utilize both the infrastructure and the spectrum resources.

Place, publisher, year, edition, pages
Stockholm, Sweden: KTH Royal Institute of Technology, 2012. , xi, 63 p.
Series
TRITA-ICT-COS, ISSN 1653-6347 ; 1205
National Category
Telecommunications
Research subject
SRA - ICT
Identifiers
URN: urn:nbn:se:kth:diva-95143ISBN: 978-91-7501-393-0 (print)OAI: oai:DiVA.org:kth-95143DiVA: diva2:528543
Presentation
2012-06-05, Sal/Hall C1, ICT-KTH, Electrum, Isafjordsgatan 26, Kista, 14:00 (English)
Opponent
Supervisors
Projects
QUASAR
Funder
EU, FP7, Seventh Framework ProgrammeWireless@kth
Note

QC 20120529

Available from: 2012-05-29 Created: 2012-05-14 Last updated: 2016-04-21Bibliographically approved
List of papers
1. A Comparative Study on Business Models of Municipal WirelessCities in US and Sweden
Open this publication in new window or tab >>A Comparative Study on Business Models of Municipal WirelessCities in US and Sweden
2008 (English)In: 3rd IEEE/IFIP International Workshop on Business-driven IT Management, 2008. BDIM 2008, IEEE conference proceedings, 2008, 116-117 p.Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

In this paper, we will explore the existing operational "business models" for municipal wireless networks in US and Sweden. Based on the current paradigms of the North-American public wireless networks, we will investigate an emerging wireless city concept in Sweden to analysis this new business concept in the existing field. We will look into the relationship of different actors in various business models of the wireless cities in our selected case studies. This paper will aim to demonstrate a number of key considerations when designing and managing the business model of Municipal wireless networks as business-driven and public utility-driven services.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2008
National Category
Economics and Business Communication Systems
Identifiers
urn:nbn:se:kth:diva-95165 (URN)10.1109/BDIM.2008.4540085 (DOI)000258095100017 ()2-s2.0-51249117924 (Scopus ID)978-1-4244-2191-6 (ISBN)
Conference
Business-driven IT Management Conference, BDIM 7 April 2008. the 3-rd IEEE/IFIP International Workshop
Note

© 2008 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

QC 20120613

Available from: 2012-06-13 Created: 2012-05-15 Last updated: 2013-11-26Bibliographically approved
2. An Investigation of the Business Model in the Karlskrona Municipal Wireless Network in Sweden
Open this publication in new window or tab >>An Investigation of the Business Model in the Karlskrona Municipal Wireless Network in Sweden
2008 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, an investigation on an emerging operational "business model" for the municipal wireless network in the city of Karlskrona in Sweden is explored. We inquire into the association between of different actors involved in the business model implemented by Karlskrona municipality in our selected case study, and identify a number of key considerations in the business model and wireless city services for municipality when it is initializing and deploying the municipal wireless network as a business driven and public-utility driven service.

National Category
Telecommunications Economics and Business
Identifiers
urn:nbn:se:kth:diva-95178 (URN)
Conference
the 1st Workshop on Wireless Broadband Access for Communities and Rural Developing Regions, WIRELESS4D, Karlstad,Sweden, 11 - 12 December, 2008
Note
QC 20120607Available from: 2012-06-07 Created: 2012-05-15 Last updated: 2016-04-21Bibliographically approved
3. Competitive Spectrum Allocation in Heterogeneous Coverage Areas
Open this publication in new window or tab >>Competitive Spectrum Allocation in Heterogeneous Coverage Areas
2011 (English)In: 17th European Wireless Conference 2011, EW 2011, VDE Verlag GmbH, 2011, 313-318 p.Conference paper, Published paper (Refereed)
Abstract [en]

It could be costly to deploy a full coverage mobile broadband service with high bandwidth for a single operator. The development of low cost radio network equipment for short range coverage could trigger off a new scenario. Some providers may invest heavily to provide coverage in a wide area, while other providers would invest considerably less to provide coverage in a "hotspot" (small area). There exist two business models; in the first, the providers share their networks explicitly in a cooperative manner. In the second model, the providers compete with each other for users. This paper studies the competitive case, where providers have heterogeneous (partially overlapping) coverage. We analyse which service provisioning conditions are viable to the hotspot provider. The obtained results highlight the importance of infrastructure investments that characterized by degree of competition in the market. The system performance is also affected by the choice of sensitivity towards price and QoS. The results indicate that the hotspot provider could have a profit under given spectrum access mechanism and competition setting, which both would affect the level of the its profitability.

Place, publisher, year, edition, pages
VDE Verlag GmbH, 2011
Keyword
Investments, Profitability, Business models, High bandwidth, Infrastructure investment, Mobile broadband, Radio networks, Service provisioning, Spectrum access, Spectrum allocation
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-50753 (URN)2-s2.0-84907067701 (Scopus ID)978-3-8007-3343-9 (ISBN)
Conference
17th European Wireless Conference 2011, EW 2011, Vienna, Austria, 27 April 2011 through 29 April 2011
Projects
MODyS
Note

QC 20111207

Available from: 2011-12-07 Created: 2011-12-07 Last updated: 2015-04-22Bibliographically approved
4. Market-based Spectrum Sharing in Capacity-limited Heterogeneous Wireless Networks
Open this publication in new window or tab >>Market-based Spectrum Sharing in Capacity-limited Heterogeneous Wireless Networks
2011 (English)In: Proceedings of Communication Technologies Workshop (SWE-CTW), 2011 IEEE Swedish, 2011, 86-91 p.Conference paper, Published paper (Refereed)
Abstract [en]

With the launch of flat-rate mobile broadband Internet access, wireless service providers (WSP) have faced a fierce competition for users. This became even more challenging issue with the expansion of smartphones and cloud computing applications driving the demand for mobile broadband access. Allowing users to get service offers freely from any wireless service provider, some aspects should be considered thoroughly. Although the WSP's service coverage has traditionally been considered a legitimate necessity, the network capacity is limited and should be expanded to support a growing user demand. Consequently, the wireless service providers must exploit cost-effective solutions on deployment of radio access technologies that in turn would embody new sources to generate more revenue. These solutions would be affected by the competitor strategies in terms of their network capacity and coverage. In this paper, we consider this problem in the context of competitivewireless networks, operating in heterogeneous coverage areas. We observe market-based spectrum sharing framework that ensures an efficient resource allocation, meanwhile it guarantees profit maximization and facilitates a highspectrum utilization through the WSP competition. The paper presents a rigorous analysis of the framework properties that provides insights into the deployment and pricing strategies. We provide numerical results that can help identify parameters which affect the WSPs' economical viability. These insights can be applied by future WSPs.

Series
Examensarbete Byggnadsteknik
Keyword
capacity, competition, coverage, resource allocation, wireless access markets
National Category
Telecommunications
Research subject
SRA - ICT
Identifiers
urn:nbn:se:kth:diva-62717 (URN)10.1109/Swe-CTW.2011.6082495 (DOI)2-s2.0-83755172297 (Scopus ID)978-1-4577-1877-9 (ISBN)
Conference
Communication Technologies Workshop (SWE-CTW), 2011 IEEE Swedish, Stockholm, October 19-21, 2011
Projects
MODyS
Available from: 2012-01-20 Created: 2012-01-20 Last updated: 2012-05-29Bibliographically approved
5. Towards Open Mobile Broadband Market with Energy-Efficient Deployment
Open this publication in new window or tab >>Towards Open Mobile Broadband Market with Energy-Efficient Deployment
2011 (English)In: Proceedings of the 10th Scandinavian Workshop on Wireless Ad-hoc Networks (ADHOC'11): Wireless Architectures for the Internet Things, 2011Conference paper, Published paper (Other academic)
Abstract [en]

A growing demand for mobile broadband services will, sooner or later, cause a service provider to face problems in terms of network capacity. The pressurizing situation is more noticeable in a highly competitive environment. It is challenging for a new service provider to maximize the profitability while, at the same time, maintain high quality services. For virtually any network deployment strategy, the service provider will need to look at ways to reduce capital expenses (CAPEX) to decrease the cost per service. A better energy utilization is believed to have the potential to lower the network operation expenses (OPEX) and to balance network coverage versus user traffic. A cost structure and energy-efficiency in the mobile broadband network is crucial for success. In this paper, we consider a competition between incumbent and entrant providers, where the entrant chooses a suitable deployment strategy at the market entry. Both providers are profit- maximizers. We propose two competitive deployment strategies (“Cost Leadership” and “Differential Pricing” strategy) with an energy consumption constraint. The system performance is evaluated in terms of network size (market share), transmitted power, antenna height and user preference. The simplistic model used in this paper gives a clear understanding of investment needed for the expected coverage and capacity of the network. A provider who chooses to deploy a radio access technology smartly, focusing primarily on business strategy and cost efficiency, would benefit greatly.

National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-62727 (URN)
Conference
10th Scandinavian Workshop on Wireless Ad-hoc Networks (ADHOC'11), Stockholm, May 10-11, 2011
Note

QC 20120416

Available from: 2012-01-20 Created: 2012-01-20 Last updated: 2014-01-16Bibliographically approved
6. Competitive pricing with heterogeneous demand in open wireless access market
Open this publication in new window or tab >>Competitive pricing with heterogeneous demand in open wireless access market
2011 (English)In: Proceedings of the 3rd International IEEE Congress on Ultra Modern Telecommunications and Control Systems (ICUMT), 2011Conference paper, Published paper (Refereed)
Keyword
wireless access markets, coverage overlap, competition, resource allocation, nonuniform distribution
National Category
Other Computer and Information Science
Identifiers
urn:nbn:se:kth:diva-39683 (URN)
Available from: 2011-09-12 Created: 2011-09-12 Last updated: 2014-01-16Bibliographically approved

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