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ITU Working Group WP-8F
is completing the revision of Rec. 1036-2 to establish the frequency
arrangement for the 2.6 GHz band.
Recommendation
1036-2, approved at the last ITU Radiocommunication Assembly,
establishes the frequency arrrangements for all the bands identified
at the World Radiocommunication Conference (WRC-2000) for IMT-2000
systems.
Although the Recommendation already contained a section on the 2.6 GHz
band, Sector Members and Member States had many doubts concerning the
most appropriate frequency arrangement. There were several possible
and conflicting scenarios that require further study and harmonization
to generate greater economies of scale and, consequently, lower costs.
This effort began
immediately following WRC-03 and is scheduled to be completed by the
next WP-8F meeting in Shanghai in October 2004.
It is important to
note that following consideration of the contributions by the
Administrations and the technical discussions arising from the three
meetings held since the last Conference, of the seven existing
scenarios, significant progress has been made towards defining a
single scenario, as indicated in the figure below.
| A |
B |
C |
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FDD UL (internal)
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Flexible choice: FDD DL
[external] or TDD |
FDD LD (internal) |
Figure
1. Working assumption for the frequency arrangements for 2.6 GHz
(frequency arrangement)
The upcoming WP-8F
meeting will be the last to address the issue (2.6 GHz). It is
anticipated that the size of the blocks accommodating the FDD and TDD
technologies will be defined and that some of the Notes through which
a few Administrations highlight their distinct views with respect to
the frequency arrangement proposed for the Recommendation can be
simplified or even suppressed.
Although this
frequency band is currently being used for Multichannel Distribution
System (MDS) applications in most countries of the Americas,
technological digitalization offers significant benefits in terms of
spectrum optimization. Thus, transmission capacity can be increased to
enable studies on inclusion of other applications at the same band,
such as RLAN or even IMT-2000.
Francisco Soares
Chair
Working Group on Terrestrial Fixed
and Mobile Radiocommunication Services
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Additional Information: Working Group on
Terrestrial Fixed and Mobile Radiocommunication Services
has among its' terms of reference the
follow-up of
the activities and studies being conducted at the ITU,
particularly in the Radiocommunication
Sector so as to prepare guidelines
regarding the use and sharing of radio frequency, including
channeling and frequency arrangements.
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IMT-2000 – 2.6 GHz
