http://www.engineeringnews.co.za
  SEARCH
Login
R/€ = 17.80Change: -0.01
R/$ = 15.99Change: 0.00
Au 1165.40 $/ozChange: 10.35
Pt 906.50 $/ozChange: 6.00
 
 
Note: Search is limited to the most recent 250 articles. Set date range to access earlier articles.
Where? With... When?








Start
 
End
 
 
And must exclude these words...
Close Main Search
Close Main Login
My Profile News Alerts Newsletters Logout Close Main Profile
 
Agriculture   Automotive   Chemicals   Competition Policy   Construction   Defence   Economy   Electricity   Energy   Environment   ICT   Metals   Mining   Science and Technology   Services   Trade   Transport & Logistics   Water  
What's On Press Office Tenders Suppliers Directory Research Jobs Announcements Letters About Us
 
 
 
RSS Feed
Article   Comments   Other News   Research   Magazine  
 
 
Apr 12, 2013

Trial connects ten Cape schools to Web using ‘television white spaces’

Back
Cape Town|Africa|Building|Education|Industrial|Projects|Systems|Technology|Africa|South Africa|Meraka Institute|Broadband Internet Access|Correct Hardware|Education Services|Egovernance Services|Internet Using Television White Spaces|Service|Services|Systems|Ntsibane Ntlatlapa|Power|Broadband|Time-division Multiplexing
|Africa|Building|Education|Industrial|Projects|Systems|Technology|Africa|||Service|Services|Systems|Power|
cape-town|africa-company|building|education-company|industrial|projects|systems-company|technology|africa|south-africa|meraka-institute-facility|broadband-internet-access|correct-hardware|education-services|egovernance-services|internet-using-television-white-spaces|service|services|systems|ntsibane-ntlatlapa|power|broadband|timedivision-multiplexing
© Reuse this



Ten schools in the Cape Town area have been connected to the Internet at speeds of 4 MB/s using unused ultra-high frequency spectrum between 480 MHz and 690 MHz reserved for television broadcasting, says Council for Scientific and Industrial Research (CSIR) Meraka Institute manager Dr Ntsibane Ntlatlapa.

The ten schools are participating in the first trial in South Africa to study the effects of connecting and the potential to connect underserviced regions to the Internet using television white spaces (TVWSes), which comprises the currently unused frequencies reserved for television broadcasting. Unused frequencies vary, depending on regions, channels and time of day.

A second trial will aim to demonstrate the use of TVWSes to connect rural regions in Limpopo.

A possible third trial will involve machine-to-machine communication and possible remote meter reading using TVWS frequencies in a time-division multiplexing format, where different signals are sent at different times, or the study of the functionality and use of TVWS channels with regard to machines only sending signals periodically.

The Meraka Institute is studying several different concepts, including the interference of such TVWS connections with frequencies in use, the use of existing television antennae to connect rural and township residents to the Internet and the effective ranges of TVWS broadband connections, he says.

The Department of Communications has issued a licence to Meraka, which enables the institute to conduct studies of these TVWS frequencies in the Cape Town region.

TVWSes are more abundant in rural areas, owing to fewer television channels broadcasting to these regions; therefore, more TVWSes are available to deliver services.

Further, TVWSes are significantly cheaper to use than 2.6 GHz frequencies because the signal travels farther using the same power for transmission. This may enable easier entry for new users, such as broadband service providers or content distributors, in different regions, says Ntlatlapa.

Much of TVWS research pertains to future applications of the frequencies, specifically to provide channels to distribute education services, to enable egovernance services, including rural municipalities having direct communication channels to residents and rural residents interfacing with the Department of Home Affairs without travelling great dis- tances, and to provide entertainment, broadband Internet access and connectivity to more people in South Africa.

“An antenna is not only a receiver and, with the correct hardware, every house’s antenna can be connected to a base station. However, we have several research projects at Meraka to iron out the details and applicability of different technologies,” he notes.

The purpose of the study, however, is to help the Department of Communication to draw up regulations for the use of TVWSes by licensed operators, he says.

Dynamic Access
Operators currently lease spectrum, such as that monitored by Meraka, over fixed ranges according to spectrum databases. However, Meraka has conducted several studies on newer technologies, specifically dynamic access and beaconing.

Dynamic access involves base stations searching for unused frequencies and providing services to connected devices on these unused frequencies.

Beaconing searches for channels used by other base stations and, using a complex algorithm, determines how the different channels will be used by base stations should possible interference be probable. A PhD researcher at the CSIR has developed a viable algorithm for this emerging technology.

Further, the capabilities provided by improved connectivity in rural and remote areas should foster the development of more industry and businesses in these regions, he adds.

“There is now a demand for this TVWS spectrum to deliver improved WiFi-like systems for broadband; these devices are known as white space devices. White space devices are based on a combination of spectrum sensing, geolocation and beacon techniques for interference avoidance,” Ntlatlapa notes.

These frequency bands are attractive to potential broadband users owing to the availability of a large amount of spectrum that can be used to provide connectivity, propagation qualities that provide for non-line-of-sight performance and in-building penetration, as well as large coverage areas, thanks to the long-range propagation of the signal at these frequencies.

The Meraka Institute’s research will help the Department of Communication to develop effective regulations for using the TVWS spectrum in South Africa; it may also have future implications for the licensing, use and sharing of spectrum for all telecommunications, he concludes.

Edited by: Martin Zhuwakinyu
Creamer Media Senior Deputy Editor
© Reuse this

To subscribe email subscriptions@creamermedia.co.za or click here
To advertise email advertising@creamermedia.co.za or click here
 
Comment Guidelines (150 word limit)
 
 
 
 
 
 
 
 
Other ICT News
The Western Cape provincial government plans to invest R2.89-billion in the roll-out of broadband connectivity to its citizens, as research has found that the average resident in the province spends more than 20% of their monthly income on accessing the Internet....
Identity and Access Management (IAM) is a critical facet of a connected security ecosystem, as controlling the confidentiality, integrity and authorisation of data access and use is key to securing new digital business channels. However, companies face several...
RORY YOUNG Managed security services provide companies with a means to actively monitor their environment and ward against threats
Data underpins digital business models, the digital economy, the Internet of Things and the fundamental changes in the ways people interact and protecting data is crucial to securing new ways of doing business, says T-Systems South Africa information and...
More
 
 
Latest News
The Health Market Inquiry (HMI) hearings into the private healthcare sector  will get under way on February 16 at the Council for Scientific and Industrial Research (CSIR) International Convention Centre, in Pretoria. In addition to private healthcare consumers,...
With “misinformation” over the Wild Coast Road project spreading among the local communities along the route, the South African National Roads Agency Limited (Sanral) has defended the project that it believes will bring substantial benefit to Eastern Cape region. The...
The Western Cape provincial government plans to invest R2.89-billion in the roll-out of broadband connectivity to its citizens, as research has found that the average resident in the province spends more than 20% of their monthly income on accessing the Internet....
More
 
 
Recent Research Reports
Construction 2016: A review of South Africa's construction industry (PDF Report)
Creamer Media’s Construction 2016 Report examines South Africa’s construction industry over the past 12 months. The report provides insight into the business environment; key participants; local demand; geographic diversification; corporate activity; black economic...
Energy Roundup – February 2016 (PDF Report)
The February 2016 roundup covers activities across South Africa for December 2015 and January 2016 and includes details of a Government Gazette notice that confirms Cabinet’s decision to move ahead with the 9 600 MW nuclear procurement programme; State-owned power...
Energy Roundup - December 2015 (PDF Report)
The December 2015 roundup includes details of State-owned utility Eskom’s application to claw back R22.8-billion; South Africa’s ranking as an investment destination for renewable energy; and a nuclear expert’s thoughts on reactor designs for South Africa’s nuclear...
Water 2015: A review of South Africa's water sector (PDF Report)
Creamer Media’s Water 2015 Report considers the aforementioned issues, not only in the South African context but also in the African and global context in terms of supply and demand, water stress and insecurity, and access to water and sanitation, besides others.
Input Sector Review: Pumps 2015 (PDF Report)
Creamer Media’s 2015 Input Sector Review on Pumps provides an overview of South Africa’s pumps industry with particular focus on pump manufacture and supply, aftermarket services, marketing strategies, local and export demand, imports, sector support, investment...
Liquid Fuels 2015: A review of South Africa's liquid fuels sector (PDF Report)
Creamer Media’s Liquid Fuels 2015 Report examines these issues in the context of South Africa’s business environment; oil and gas exploration; fuel pricing; the development of the country’s biofuels industry; the logistics of transporting liquid fuels; and...
 
 
 
 
 
This Week's Magazine
Power and automation company ABB is in the launch phase of its highest payload, multipurpose industrial robot, the IRB 8700. The robot has a reach of 3.5 m and can handle a payload of up to 800 kg. “When designing the IRB 8700, we emphasised reach and payload, as...
Identity and Access Management (IAM) is a critical facet of a connected security ecosystem, as controlling the confidentiality, integrity and authorisation of data access and use is key to securing new digital business channels. However, companies face several...
RORY YOUNG Managed security services provide companies with a means to actively monitor their environment and ward against threats
Data underpins digital business models, the digital economy, the Internet of Things and the fundamental changes in the ways people interact and protecting data is crucial to securing new ways of doing business, says T-Systems South Africa information and...
The City of Cape Town will issue a tender for the procurement of electric buses for its MyCiTi service, in line with the council’s commitment to lower its carbon footprint, says executive mayor Patricia de Lille. The tender, to be advertised early in February, will...
The iSimangaliso Wetland Park Authority signed a R10-million contract last month with local tailings storage facility specialists Cyclone Engineering Projects to remove about 100 000 m3 of dredge spoil obstructing the natural course of the uMfolozi river, in...
 
 
 
 
 
 
 
 
 
Alert Close
Embed Code Close
content
Research Reports Close
Research Reports are a product of the
Research Channel Africa. Reports can be bought individually or you can gain full access to all reports as part of a Research Channel Africa subscription.
Find Out More Buy Report
 
 
Close
Engineering News
Completely Re-Engineered
Experience it now. Click here
*website to launch in a few weeks
Subscribe Now for $149 Close
Subscribe Now for $149