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Cost efficient provisioning of wireless access: infrastructure cost modeling and multi-operator resource sharing
KTH, School of Electrical Engineering (EES).
2005 (English)Licentiate thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH , 2005. , 75 p.
Series
Trita-S3-RST, ISSN 1400-9137 ; 0520
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-580OAI: oai:DiVA.org:kth-580DiVA: diva2:14492
Presentation
2005-12-16, sal C1, Electrum, KTH, Isafjordsgatan 22, Kista, Stockholm, 14:00
Supervisors
Note
QC 20101206Available from: 2005-12-28 Created: 2005-12-28 Last updated: 2011-05-12Bibliographically approved
List of papers
1. Relation between base station characteristics and cost structure in cellular systems
Open this publication in new window or tab >>Relation between base station characteristics and cost structure in cellular systems
2004 (English)In: 2004 IEEE 15TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-4, PROCEEDINGS, NEW YORK: IEEE , 2004, 2627-2631 p.Conference paper, Published paper (Refereed)
Abstract [en]

A simple method for estimating the costs of building and operating a cellular mobile network is proposed. Using empirical data from a third generation mobile system (WCDMA) it is shown that the cost is driven by different factors depending on the characteristics of the base stations deployed. When site density increase, operational and transmission costs tend to dominate rather than radio equipment and site costs. The results also show how, for different capacity requirements, the costs can be minimized by a proper selection of for example macro, micro and pico base stations. In many scenarios the macro base stations yield the lowest cost, indicating that coverage (cell range) is an important parameter when designing wireless systems.

Place, publisher, year, edition, pages
NEW YORK: IEEE, 2004
Keyword
tele-economics, cost model, infrastructure cost, base station cost
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-27009 (URN)000225483300514 ()2-s2.0-11244334105 (Scopus ID)
Conference
15th IEEE International Symposium on Personal, Indoor, Mobile, Radio Communications (PIMRC 2004) Barcelona, SPAIN, SEP 05-08, 2004
Note
QC 20101203Available from: 2010-12-03 Created: 2010-12-03 Last updated: 2010-12-06Bibliographically approved
2. An infrastructure cost evaluation of single- and multi-access networks with heterogeneous traffic density
Open this publication in new window or tab >>An infrastructure cost evaluation of single- and multi-access networks with heterogeneous traffic density
2005 (English)In: 2005 IEEE 61ST VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, PROCEEDINGS, New York: IEEE , 2005, 3166-3170 p.Conference paper, Published paper (Refereed)
Abstract [en]

Traditional performance measures like capacity, cell radius and supported QoS are often insufficient when comparing wireless networks with different network architectures and cost structures. Instead, in this paper, infrastructure cost is used to compare different operator deployed single- and multi-access wireless networks, including 3G, WLAN and proposed 4G radio access technologies. For this purpose a model for the geographical distribution of traffic is introduced. Despite the spatially non-uniform traffic demand, single-access solutions like WCDMA High-Speed Downlink Packet Access (HSDPA) or Long-Term 3G Evolved, with high capacity macro cellular base stations, typically yield the lowest costs per user. In particular this holds for a hypothetical Long-Term 3G Evolved system operating in 450MHz spectrum, which indicates the importance of good coverage. Operator deployed WLAN-only solutions are more expensive even for small fractions of supported users. Multi-access solutions, combining for example WCDMA DCH or HSDPA with WLAN, do not seem to provide better cost efficiency than standard hierarchical cell structures in single-access systems. Instead, multi-access solutions have to be motivated by other factors like peak data rates and spectrum availability.

Place, publisher, year, edition, pages
New York: IEEE, 2005
Series
IEEE VTS Vehicular Technology Conference Proceedings, ISSN 1090-3038
Keyword
infrastructure cost, tele-economics, mufti-access, WCDMA, 3G, long-term 3G evolution, 4G, WLAN
National Category
Telecommunications
Research subject
SRA - ICT
Identifiers
urn:nbn:se:kth:diva-27010 (URN)10.1109/VETECS.2005.1543931 (DOI)000232179304091 ()2-s2.0-26444483910 (Scopus ID)0-7803-8887-9 (ISBN)
Conference
61st IEEE Vehicular Technology Conference Stockholm, SWEDEN, MAY 30-JUN 01, 2005
Note
QC 20101203Available from: 2010-12-03 Created: 2010-12-03 Last updated: 2011-10-10Bibliographically approved
3. Cost efficient capacity expansion strategies using multi-access networks
Open this publication in new window or tab >>Cost efficient capacity expansion strategies using multi-access networks
2005 (English)In: VTC2005-SPRING: 2005 IEEE 61ST VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, PROCEEDINGS, IEEE , 2005, 2889-2993 p.Conference paper, Published paper (Refereed)
Abstract [en]

Multi-access networks and hierarchical cell structures are two common capacity expansion strategies for mobilenetwork operators. In both cases costs can be minimized fora set of available radio access technologies, given heterogeneous requirements on area coverage, capacity and quality of service. In this paper we quantify the infrastructure cost for a multi-accessnetwork composed of macro cellular HSDPA base stations and IEEE 802.11g WLAN access points. The network is dimensioned for an urban environment using a stochastic model for heterogeneous traffic density.With the used assumptions and modelling it is shown that a combination of HSDPA base stations deployed with 400mcell radius together with WLAN in hot spots are suffcient foraver age traffic densities up to around 50Mbps/km2 (50 timesthe traffic of typical private voice users today). In order to evaluate the sensitivity to different design features, we introducethe elasticity of infrastructure cost and can thereby show that it is more important to improve capacity in HSDPA than coverageper 802.11g access point. However, with a sparse deployment of HSDPA macro cells (800m radius) infrastructure cost ismore elastic to 802.11g coverage. The paper also indicatessome possibilities to differentiate future radio access technologies towards current systems.

Place, publisher, year, edition, pages
IEEE, 2005
Series
IEEE VTS Vehicular Technology Conference Proceedings, ISSN 1090-3038 ; 61
Keyword
Mobile telecommunication systems, Random processes, Sensitivity analysis, Telecommunication traffic
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-27026 (URN)10.1109/VETECS.2005.1543895 (DOI)000232179304055 ()2-s2.0-26444550707 (Scopus ID)0-7803-8887-9 (ISBN)
Conference
2005 IEEE 61st Vehicular Technology Conference -VTC 2005 - Spring Stockholm: Paving the Path for a Wireless Future; Stockholm; Sweden; 30 May 2005 through 1 June 2005
Note

QC 20101206

Available from: 2010-12-06 Created: 2010-12-06 Last updated: 2014-12-02Bibliographically approved
4. On the cost efficency of user deployed access points integrated in mobile networks.
Open this publication in new window or tab >>On the cost efficency of user deployed access points integrated in mobile networks.
(English)Manuscript (preprint) (Other academic)
Abstract [en]

Open access to private, user deployed, access points is a promising candidate for provisioning of high data rates in public wireless access systems. This deployment strategy should especially be an efficient method to serve indoor users in cities with a significant penetration of fixed broadband networks. We estimate the infrastructure cost for different mixes of operator deployed (HSDPAmacro cells and 802.11g WLAN) and user deployed access points. The network is dimensioned according to a stochastic(log-normally distributed) model for traffic density.Results indicate that, with the modelling and assumptions used, user deployed access points lower the infrastructure cost for traffic densities above 10Mbps/km2 (10 times thetraffic of typical private speech users in a city center).Moreover, only a few percent of the subscribers need to install open access points to cover a signifficant fraction of the total trafffc terminated indoors.

National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-27027 (URN)
Note
QC 20101206Available from: 2010-12-06 Created: 2010-12-06 Last updated: 2010-12-06Bibliographically approved
5. Radio resource management in roaming based multi-operator WCDMA networks
Open this publication in new window or tab >>Radio resource management in roaming based multi-operator WCDMA networks
2004 (English)In: VTC2004-SPRING: 2004 IEEE 59TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, PROCEEDINGS, NEW YORK: IEEE , 2004, 2062-2066 p.Conference paper, Published paper (Refereed)
Abstract [en]

Infrastructure sharing and Mobile Virtual Network Operators (MVNO) are becoming more and more common in todays mobile networks. In both cases the subscribers of multiple operators connect to the same radio access network via, e.g., roaming based methods. Depending on how much each operator pays, they should then be guaranteed a certain capacity in the shared network. This paper discusses different solutions for how the radio resources in such a roaming based multi-operator WCDMA network may be allocated to the sharing operators. One particular method based on Radio Resource Management (RRM) with non-preemptive priority queuing in the admission control is presented in detail. The method seems to provide an attractive tradeoff between fairness and total system capacity.

Place, publisher, year, edition, pages
NEW YORK: IEEE, 2004
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-27032 (URN)000226279400426 ()2-s2.0-15344346218 (Scopus ID)
Conference
59th IEEE Vehicular Technology Conference Milan, ITALY, MAY 17-19, 2004
Note
QC 20101206Available from: 2010-12-06 Created: 2010-12-06 Last updated: 2011-11-02Bibliographically approved
6. An Estimation of the Achievable User Throughput with National Roaming.
Open this publication in new window or tab >>An Estimation of the Achievable User Throughput with National Roaming.
(English)Manuscript (preprint) (Other academic)
Abstract [en]

National roaming, that is allowing users to access networks of multiple domestic operator's, was discussed already during development of first and second generation mobile systems.For mobile voice services, however, the operators afforded to build networks with (almost) full coverage alone. The benefits with national roaming, in terms of increased coverage, trunking efficiency and lowered risk exposure, did consequently not exceedthe drawbacks associated with increased operator cooperation.Motivated by the considerable investments for providing coverage for mobile data services, and enabled by the commonradio resource management proposed for systems “Beyond 3G”,this paper1 evaluates the benefits with national roaming for besteffort data services. The results show that national roaming more than doubles the data rates for users at the cell border. Thisg ain is motivated by reduced path loss and lowered interference levels. Around half of the potential gain is captured already with nearly co-sited base stations, which suggests that the benefits for operators to coordinate their base station site plans are limited.

National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-27029 (URN)
Note
QC 20101206Available from: 2010-12-06 Created: 2010-12-06 Last updated: 2010-12-06Bibliographically approved

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