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On Powering Communication Networks in Developing Regions
KTH, School of Information and Communication Technology (ICT), Communication: Services and Infrastucture, Telecommunication Systems Laboratory, TSLab.
KTH, School of Information and Communication Technology (ICT), Communication: Services and Infrastucture, Telecommunication Systems Laboratory, TSLab.ORCID iD: 0000-0002-9626-1496
2011 (English)In: Computers and Communications (ISCC), 2011 IEEE Symposium on, Kerkyra, Greece: IEEE , 2011, 383-390 p.Conference paper, Published paper (Refereed)
Abstract [en]

The work behind this paper aims at demonstrat-ing innovative solutions for the establishment of sustainablecommunity broadband networks in areas where there is de-mand but no supply of broadband services. One of the majorchallenges turns out to be reliable power supply. To overcomethis challenge, we explore how to decrease the demand forpower as well as the feasibility of using alternative powersources, such as solar and wind, and alternative power storagetechnologies, such as batteries and ultra-capacitors.In this paper, we present data collected over 2 months fromthe Serengeti community network in rural Tanzania to discussthe quality of the existing power-grid and the feasibility ofusing solar and wind energy as alternative energy sources.The network backbone is based on 1Gbps Ethernet links overdark fibre while end-user connections are currently based onWiFi links.Our measurements regarding the quality of the power-gridshow up to 21 power-outages in one single day, with an averageof 2 outages per day. Some of the outages are due to plannedrationing schemes caused by insufficient power generationwhile some outages are due to poor wiring or installations.Our measurements and analysis of the feasibility of usingalternative power sources indicate wind speeds on the average2m/s and a persistent high-level insolation, making solar energythe prime candidate as an alternative source of electricity. Therelatively high cost of solar panels has to be mitigated byincreased energy efficiency of the network elements. We alsopropose power management to be included in the networkmanagement system to maximize the availability of the net-work services and decrease operational costs due to damagednetwork elements.

Place, publisher, year, edition, pages
Kerkyra, Greece: IEEE , 2011. 383-390 p.
Series
IEEE Symposium on Computers and Communications ISCC, ISSN 1530-1346
Keyword [en]
Green networking; alternative energies; develop- ing regions; remote areas
National Category
Telecommunications
Research subject
SRA - ICT; SRA - Energy
Identifiers
URN: urn:nbn:se:kth:diva-48394DOI: 10.1109/ISCC.2011.5983868ISI: 000298614900069Scopus ID: 2-s2.0-80052766849ISBN: 978-1-4577-0680-6 (print)ISBN: 978-1-4577-0678-3 (print)OAI: oai:DiVA.org:kth-48394DiVA: diva2:457490
Conference
IEEE Symposium on Computers and Communications (ISCC)
Funder
StandUp
Note
QC 20111118Available from: 2011-11-23 Created: 2011-11-18 Last updated: 2012-04-03Bibliographically approved
In thesis
1. Towards Sustainable Broadband Communication in Under-served Areas: A Case Study from Tanzania
Open this publication in new window or tab >>Towards Sustainable Broadband Communication in Under-served Areas: A Case Study from Tanzania
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The problem discussed in this thesis is how to establish sustainable broadband markets in under-served areas. The purpose is to improve people’s living conditions by promoting efficient service delivery in education, health, and governance and alleviating poverty. Due to the high-perceived risks, the market forces have failed to bring ICT in these areas. The business community is reluctant to take on the supplier role.

Earlier efforts through development partners have been focusing on connecting under-served areas to the global Internet via telecentres. However, most implementations could not operate beyond the initial funding for various reasons, especially the lack of understanding of the local needs where most technical solutions were imported from the developed world, not optimized to work under local conditions.

We propose the creation of community or municipal owned “broadband islands”, defined as high speed communication broadband networks that do not depend on external connections for their operations. Using an Action Research participatory approach, we are emphasizing multi-stakeholder partnerships, and engaging the local community to contribute infrastructure, technical solutions and leadership. Our proposal is validated through the design and deployment of two pilot sites in rural areas of Tanzania. Our original contributions include 1) An overall model on how to establish and sustain broadband markets in under-served areas, making it scalable and reproducible. 2) technical innovations, especially the design and implementation of a low cost, low power-consuming, and robust router with integrated power management. 3) Organizational innovations by establishing institutional mechanisms at a local level in public-private-community partnership. 4) Innovative funding mechanisms by identifying partners who can pay on behalf of the end users and cut down costs through resource sharing schemes.

The government of Tanzania has shown interest to use the pilot sites as models for extending the national backbone into other municipal. Also, discussions are underway to organize similar pilots in East Africa.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2011. xiv, 49 p.
Series
Trita-ICT-ECS AVH, ISSN 1653-6363 ; 11:11
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-49085 (URN)978-91-7501-154-7 (ISBN)
Public defence
2011-12-09, Sal/Hall E, KTH-Forum, Isafjordsgatan 39, Kista, 13:00 (English)
Opponent
Supervisors
Note
QC 20111125Available from: 2011-11-25 Created: 2011-11-25 Last updated: 2011-11-25Bibliographically approved

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Publisher's full textScopushttp://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5983868

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Pehrson, Björn

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