10 Dec, 2010, 06.11AM IST, Rekha Jain,
As the world shifts to open spectrum
http://economictimes.indiatimes.com/opinion/comments--analysis/As-the-world-shifts-to-open-spectrum/articleshow/7074457.cms

The 2G spectrum scam has highlighted the economic and commercial value
of spectrum. Mobile services are critical to our shift towards a more
knowledge and service-based economy. The increasing mobility of our
workforce has created the need for the ability to send and receive
data on the go. Competitive pressures have accentuated this need. The
decreasing price-performance ratio and the ability to access the
internet have further increased the need for mobile wireless services.

The critical input for these services is the electromagnetic spectrum.
However, since electromagnetic waves may interfere to effectively
manage wireless communications, allocations are often made on an
exclusive basis. So, each country has its own institutions and regime
to manage it. But with changes in technology, it has become possible
to provide for shared usage amongst multiple users in the same band as
in Wi-Fi or through cognitive radios. Such changes require a rethink
of the existing institutions and instruments for managing wireless.

Since commercial value of spectrum has only been recognised recently,
government departments and users in most countries had been allocated
spectrum either at no or low costs, compared to the market value.
Since governments agencies, including defence forces, are major users
of spectrum, many countries have undertaken a review of the
government's usage of this resource. Several countries have also
adopted principles of public sector or governments having to pay
market prices for spectrum.

This has made the user departments and ministries review their own
usage of spectrum and make it more efficient, either by adopting new
technologies or by releasing spectrum that is not used. Some countries
have mandated a planned switchover from all wireless analog
communication to digital. Since digital devices and transmission media
are more efficient ways of using the spectrum, this has led to release
of spectrum, creating more opportunities for its commercial use, as in
the 700 MHz band in the US.

As further examples of national level commitments, on June 28, 2010,
US President Barack Obama signed a presidential memorandum to commit
the federal government to make available 500 MHz of federal and
commercial spectrum over the next 10 years to foster investment,
economic growth and help create jobs by meeting the burgeoning demand
for mobile and fixed broadband, other high-value uses and benefits for
other industries (http:// www.whitehouse.gov/the-press-office /
fact-sheet-doubling-amount-commercial-spectrum-unleash-innovative-potential-wireless
). By November, 2010, more than 250 MHz had already been made
available. In the UK, the ministry of defence established a single
office responsible for management of spectrum for defence and made
public the timetable for release of its spectrum.

>From a predominantly command and control approach, countries like the
US, the UK, Australia have adopted a more 'spectrums common' approach
that allows for greater allocation of unlicensed bands due to
stipulated low power emission devices. As there is no license fee in
these bands and no limit on the number of operators, a lot of
innovation and lowcost devices have emerged, such as wireless routers
for Wi-Fi. Many countries have announced multiple unlicensed bands. In
India, the unlicensed bands are very limited. What is more troublesome
is that there is no roadmap regarding when such bands will become
unlicensed. What is required is a roadmap for all the bands that
clearly lays out the bands that are likely to be available for
commercial use, the timeframe and whether these will be licensed or
unlicensed, etc.

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