Google Offers Sneak Peek at Your Available Spectrum article tells that Google.org is publicizing a Spectrum Database that monitors unused spectrum frequencies (a.k.a. white space) across the US. The aim is to allow industry stakeholders and the public to utilize unoccupied frequency ranges better through dynamic spectrum sharing. The database is undergoing a public trial with the FCC to test its validity.
For more information read Google Spectrum Database documentation. After that Browse spectrum on map to get idea how this system works. Anyone can access the Spectrum Database to search for unused spectrum in your area, and it is planned that in the future registered devices will check from it which frequencies they can use and different areas automatically.
10 Comments
Tomi Engdahl says:
COgnitive radio systems for efficient sharing of TV white spaces in EUropean context
European TV White Spaces Analysis
http://www.ict-cogeu.eu/pdf/COGEU_D2_1%20%28ICT_248560%29.pdf
Currently, there is a global move to convert TV stations from analogue to digital transmission. Due to the spectrum efficiency of DTV, some of the spectrum bands used for analog TV will be cleared and made available for other usage. The COGEU project capitalizes on the fact that: the switch-over from analogue to digital terrestrial TV in Europe will free up highly valuable radio frequencies due do the greater efficiency of digital broadcasting transmission. This ‘digital dividend’ has great potential for the provision of a wide range of services, as the radio signals in this range travel far and equipment can be easily used indoors.
Taking into account that the spectrum dividend will become available throughout Europe within a relatively short space of time
Therefore, from the European perspective, for cognitive access in the UHF band, we can see that there are numerous challenges facing both regulators and industries. Regulators will need to be satisfied that
they have specified appropriate conditions of access which protect in
cumbent users and allow feasible operation of cognitive devices and systems, including additional regulatory considerations such as management of database solutions
Tomi says:
Using Spectrum ‘White Spaces’ in Europe
http://www.digitag.org/WebLetters/2012/External-Nov2012.html
The United States has long been a pioneer in the use of the ‘white spaces’ between broadcasts by users of unlicensed transmitter devices.
enthusiasm for white space usage in the US has been damped by discussions on the spectrum incentive auctions which may impact the amount of white space spectrum available in the UHF band.
Already, trials have been undertaken in Germany, Finland, Singapore, the United Kingdom, and the United States and further ones are planned in Brazil, Japan, and South Africa.
Last September, the European Commission (EC) issued a communication on promoting spectrum sharing in which it advocated the deployment of white space devices based on harmonised standards for geo-location databases.
For further information on using white spaces in Europe, please see two European research projects, COGEU and QUASAR, which were both co-financed by the European Union as part of its FP7 research programme.
Tomi Engdahl says:
The Open Spectrum Alliance is a coalition of companies, organizations, and individuals working to unlock the potential benefits of bandwidth for all.”
The Open Spectrum Alliance is united by the goal of realizing the potential social and economic benefits of this underutilized natural resource by promoting innovative public policies.
http://www.openspectrum.eu/
Tomi Engdahl says:
White Space Devices
http://www.openspectrum.eu/drupal6/node/23
Tomi Engdahl says:
Google Launches TV White Spaces Trial In South Africa
http://techcrunch.com/2013/03/25/google-tv-white-spaces-trial-in-south-africa/
Google’s first trial to use the unused channels in the broadcast TV spectrum to provide wireless broadband access launched in 2010 in Logan, Ohio.
Since then, Google has shown a lot of interest in this topic and today it is launching its second trial. This time it is in Cape Town, South Africa
Google says, is “to show that broadband can be offered over white spaces without interfering with licensed spectrum holders.”
Tomi Engdahl says:
Unlicensed spectrum: Experts examine use cases from M2M to Wi-Fi
http://www.edn.com/electronics-blogs/waveforms/4411652/Unlicensed-spectrum–Experts-examine-use-cases-from-M2M-to-Wi-Fi
The use of unlicensed spectrum and TV White Space is a promising area of research
recent announcements about LTE and Wi-Fi trials over White Space
M2M applications, such as smart meters are a great example of how white space spectrum can be utilized efficiently. Smart meters typically deliver information in short bursts and involve relatively small file transfers. They are fairly delay insensitive and don’t require a report to be delivered exactly at a given hour, minute or second. Because there are minimal timing requirements required for smart meters, this maps very nicely to the nature of white space spectrum due to the fact that sometimes it is available and sometimes it isn’t because of the very nature of temporary primary user interference.
For M2M connections such as smart meters that are not time-sensitive, white space spectrum is the ideal partner.
While M2M applications rely on spectrum opening up to share data, rural applications instead rely on there not being very many people around to get in the way. However, this scenario is not feasible for the launch of a mass market technology, strictly for economic reasons: there aren’t enough critical mass of users to drive technpology in that direction
As companies and researchers continue to explore opportunities with white space spectrum, M2M will be a main focus and has the potential to be an incubation ground for white space. The M2M market is growing at an exponential rate. In 2022, 18 billion M2M connections are expected of which 2.6 billion will be based on mobile technology. At that time, 22 percent of all mobile connections will be M2M compared to the current 2 percent.
For example, the oil and gas industry is already capitalizing from the use of White Space to ensure data from rural areas can get back to company headquarters in a timely manner. Or providing broadband access in underserved markets
Another use case explored was the opportunities for TV White Space in machine-to-machine (M2M) communication for several verticals with distinct requirements. While the majority of the connected home applications don’t need to be secure, some industries such as the utility industry will need very secure implementations. In addition, TV White Space can use lower frequencies and can be ideal for opportunistic low data rate M2M connections that are not time sensitive, even if the spectrum is shared. The longer-range characteristics of TV White Space channels also facilitate data collection and transfer over longer distances.
White Space can provide additional bands and can help significantly enhance the evolution of WiFi and other wireless access technologies’ capabilities and functionality
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