White spaces are unused channels in the broadcast TV spectrum. They offer the potential to improve Internet connectivity where they are most needed - in the developing world. Today we’re announcing the launch of a trial with ten schools in the Cape Town area, which will receive wireless broadband over a white space network.

White space has the advantage that low frequency signals can travel longer distances. The technology is well suited to provide low cost connectivity to rural communities with poor telecommunications infrastructure, and for expanding coverage of wireless broadband in densely populated urban areas.

Google supported its first white space trial in the US in 2010, and Google.org recently launched its spectrum database for 45 day public comment period with the FCC. In October 2011, we hosted a workshop in Johannesburg, along with partners, at which the Independent Communications Authority of South Africa (ICASA) lent support for an industry-led white spaces trial in South Africa. We then worked together with the CSIR Meraka Institute, Tertiary Education and Research Network of South Africa, e-Schools Network, the Wireless Access Providers’ Association, Comsol Wireless Solutions, Carlson Wireless, and Neul to take up the challenge.

The service will be broadcast from three base stations located at Stellenbosch University’s Faculty of Medicine and Health Sciences in Tygerberg, Cape Town. Ten schools in the Cape Town area will receive wireless broadband to test the technology. During the trial, we will attempt to show that broadband can be offered over white spaces without interfering with licensed spectrum holders. To prevent interference with other channels, the network uses Google’s spectrum database to determine white space availability. To confirm results, the CSIR Meraka Institute will take spectrum measurements and frequently report back to ICASA and the local broadcasters.

White Space technology is gaining momentum around the world. In the US, it is already available for licensed exempt uses. In the UK, regulator Ofcom is working on a model regulatory framework based on a licence-exempt or ‘managed access’ use of television white spaces spectrum. We hope the results of the trial will drive similar regulatory developments in South Africa and other African countries. 

To read more about the trial background, visit TENET’s website. 

Posted by Fortune Mgwili-Sibanda, Public Policy Manager, Google South Africa

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With nearly 5,000 earthquakes a year, it’s important for people in Japan to have crisis preparedness and response information available at their fingertips. And from our own research, we know that when a disaster strikes, people turn to the Internet for more information about what is happening.

With this in mind, we’re launching Google Public Alerts today in Japan—the first international expansion of a service we debuted last year in the United States. Google Public Alerts is a platform designed to provide accurate and relevant emergency alerts when and where you’re searching for them online.

Relevant earthquake and tsunami warnings for Japan will now appear on Google Search, Google Maps and Google Now when you search online during a time of crisis. If a major earthquake alert is issued in Kanagawa Prefecture, for example, the alert information will appear on your desktop and mobile screens when you search for relevant information on Google Search and Google Maps.

Example of a Google Search result on a tablet showing a tsunami warning

Example of a tsunami warning on Google Maps

If you click “詳細” (“More info”) right under the alert, you’ll see more details about the announcement, including the full description from the Japan Meteorological Agency, a link to their site, and other useful information like observed arrival times and wave heights for tsunamis.

Example of how a tsunami alert would work in Fukushima

And when you open Google Now on your Android device, recommended actions and information will be tailored to where you are. For example, if you happen to be in Tokyo at a time when a tsunami alert is issued, Google Now will show you a card containing information about the tsunami alert, as well as any available evacuation instructions:

Example of a tsunami warning card on Google Now

We’re able to provide Public Alerts in Japan thanks to the Japan Meteorological Agency, whose publication of data enables Google and others to make critical and life-saving information more widely available.

We hope our technology, including Public Alerts, will help people better prepare for future crises and create more far-reaching support for crisis recovery. This is why in Japan, Google has newly partnered with 14 Japanese prefectures and cities, including seven from the Tōhoku region, to make their government data available online and more easily accessible to users, both during a time of crisis and after. The devastating Tōhoku Earthquake struck Japan only two years ago, and the region is still slowly recovering from the tragedy.

We look forward to expanding Google Public Alerts to more countries and working with more warning providers soon. We also encourage potential partners to read our FAQ and to consider putting data in an open format, such as the Common Alerting Protocol. To learn more about Public Alerts, visit our Public Alerts homepage.

Posted by Yu Chen, Partner Technology Manager

(Cross-posted from the Official Google Blog)

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Today, there are billions of phones, tablets, laptops and other mobile devices connecting to the Web wirelessly. Meanwhile, people living in parts of the world without wired infrastructure rely on wireless broadband for their last mile connection. As more people go online and the number of wireless devices grows, so does the need for spectrum.

There is available spectrum out there -- but it can be hard to find if you don't know where to look. One way we're trying to help researchers and other stakeholders identify available spectrum is through dynamic spectrum sharing. Spectrum sharing allows devices to use spectrum when it is not in use by someone else simply by checking a data base. We're in the process (with several others) of becoming a certified database administrator for a band of spectrum called the TV white spaces.

Today, we’ve reached a milestone in the certification process: our database is beginning a public trial with the FCC. Our trial site allows industry stakeholders (broadcasters, cable, wireless microphone users, licensed spectrum holders) to test and provide feedback on the database. The trial site also allows anyone to find out how much TV white spaces spectrum is available at any location, such as your home or office.

Google Earth visualization of available TV whitespace spectrum.

The completion of the trial will bring us all one step closer to freeing up more spectrum, which in turn will help the industry bring new wireless technologies to market and enable people to get wireless Internet access when and where they need it.

Posted by Alan Norman, Principal, Access

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