A cost-effective solution towards open frequency allocation policies

samedi 26 avril 2014

TV white spaces in the African context: state of the art and achievements

Recently, Africa has attracted the interest of many telecommunication pioneers to deploy trial projects for TV white spaces (TVWS)-based communication systems [1]. Africa has proven to be an ideal location for such trial rollouts as rural areas are the most predominant and due to the flexibility of regulatory rulemarkings allowing for more open spectrum policies [2].

South Africa
During 2013, 10 schools in Cape Town
were concerned by a trial of six months, initiated by Google with the support of the Independent Communications Authority of South Africa (ICASA) and other stakeholders, to deploy broadband internet access over TV white spaces. The software and radios was furnished by Carlson Wireless and Neul. This trial was a success to reveal the power of TV whites as a mean to serve high speed internet connections.

Another 12-month trial has been performed in Limpopo region by Microsoft, partnered by the Council for Scientific and Industrial Research and other organisms, in the hop of enabling broadband access to five secondary schools using base stations powered using solar energy. It was the latest trial from Microsoft after Kenya and Tanzania.

Kenya
Using solar powered base stations, Microsoft in conjunction with the Ministry of Information and Communication of Kenya and other players has conducted a trial pilot project to deliver high speed internet to schools, libraries, hospitals and governmental offices in rural Kenya (Nanyuki and Kalema). Adaptrum was the equipment manufacturer. This project underlines the fact “that technology should be accessible and affordable to the masses” (Louis Otieno, Microsoft) particularly in rural and poor communities.

Malawi
The case of Malawi is an amazing experience initiated by local research leaders as Dr. Chomora Mikeka from University of Malawi. Supported by the Malawi communications regulator (MACRA) and other partners, they have used a low-cost spectrum analyzer [3] to draw attention to the existence of spectrum gaps in UHF bands available for license-exempt use. Afterwards, a trial pilot has been implemented to provide high internet connectivity to different economic growth, education and healthcare facilities. As in South Africa, the gear supplier was Carlson Wireless.

Tanzania
Microsoft has announced its second planned project in Africa in Tanzania with the collaboration of the Tanzania Commission for Science and Technology (COSTECH) and other organisms, bringing affordable wireless broadband to students in Dar es Salaam’ university. Unlike the aforementioned projects, this one is targeting urban areas where the potential of TV white spaces is also confirmed.

Nigeria
A partnership has been launched between WaveTek Nigeria and Carlsson Wireless to boost the research and leverage the use of TV white spaces for the provision of broadband in underserved zones. For information, WaveTek is among the founding members of the “Dynamic Spectrum Alliance”, Google and Microsoft are also members.

Accordingly, TV white spaces generate a big interest as a key cost-effective and cheaper solution to find strategies for sustaining the emerging need for new technologies in remote and rural areas.

BIBLIOGRAPHY

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