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MINISTRY OF
INFORMATION AND COMMUNICATIONS OF VIETNAM
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SOCIALIST
REPUBLIC OF VIETNAM
Independence - Freedom - Happiness
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No.
17/2018/TT-BTTTT
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Hanoi,
December 14, 2018
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CIRCULAR
PLANNING FOR
SUBCHANNELS FOR FIXED AND MOBILE SERVICES VIA FREQUENCY RANGE OF 30 - 30000 MHZ
Pursuant to the Law on Radio Frequency dated
November 23, 2009;
Pursuant to Decree No. 17/2017/ND-CP dated
February 17, 2017 of the Government on functions, tasks, powers, and
organizational structures of Ministry of Information and Communications;
Pursuant to Decision No. 71/2013/QD-TTg dated
November 21, 2013 of the Prime Minister promulgating the Planning for national
radio frequency range;
Pursuant to Decision No. 02/2017/QD-TTg dated
January 17, 2017 of the Prime Minister on amendments to the Planning for
national radio frequency range attached to Decision No. 71/2013/QD-TTg dated
November 21, 2013 of the Prime Minister;
At request of Director of the Authority of
Radio Frequency Management,
The Minister of Information and
Communications promulgates Circular on Planning for subchannels for fixed and
mobile services via frequency range of 30 - 30000 MHz.
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1. This Circular prescribes planning for
subchannels for fixed and mobile services via frequency range of 30 - 30000
MHz.
2. This Circular applies to organizations and
individuals managing, using, manufacturing, importing, and selling radio
communication equipment associated with fixed and mobile services via frequency
range of 30 - 30000 MHz (other than cellular communication systems) in Vietnam.
Article 2. Definitions
In this Circular, the terms below are construed
as follows:
1. “radio frequency channel” (hereinafter
referred to as “channel”) refers to a range of radio frequency determined
by width and central frequency of the channel or other characteristic
parameters.
2. “mobile
service” refers to radio communication service between land stations and
mobile stations or between mobile stations.
3. “fixed
service” refers to radio communication service between specified fixed
points.
4. “single-frequency
transmission” refers to an operating method where 2 radio stations send
transmission in either direction, but not both simultaneously, using one
channel.
5. “dual-frequency
transmission” refers to an operating method where 2 radio stations send
transmission using two channels.
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7. “duplex
operation” refers to an operating method in which transmission is possible
simultaneously in both directions of a telecommunication channel.
8. “semi-duplex
operation” refers to a method which is simplex operation at one end of the
circuit and duplex operation at the other.
9. “microwave
system” refers to a radio communication system associated with fixed
services, serving frequency range above 30 MHz, utilizing tropospheric scatter,
and usually consisting of one or multiple relay stations.
10. “point-to-point
connection” (applicable to microwave) refers to a communications connection
between 2 radio stations at 2 specified fixed points.
11. “point-to-multipoint
connection” (applicable to microwave) refers to communications connections
between a radio station at a fixed point and multiple radio stations at
specified fixed points.
12. “subchannels”
refers to the arrangement of multiple channels in the same frequency band.
13. “main
subchannel” means a subchannel defined by basic parameters such as central
frequency, spacing between 2 sidebands, and transceiver frequency range.
14. “secondary
subchannels” mean subchannels situated between main channels; have central
frequency deviated by half of the spacing between 2 sidebands from central
frequencies of main channels.
15. “minimum
transmission distance” (applicable to microwave) refers to the smallest
transmission distance in which a microwave transmission is recommended in
respective subchannel.
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1. Establish order of use
of channels, unify standards applicable to radio communication system, and
restrict harmful interference between equipment, systems, and networks.
2. Guide manufacturers,
importers, sellers, and users in manufacturing, importing, and investing in
equipment, assist the authorities in arranging order of use of frequency range
and effectively managing frequency range.
Article 4. Rules of planning
1. Comply with the
applicable Planning for national radio frequency range approved by the Prime
Minister.
2. Rely on subchannel
recommendations of the ITU and regional telecommunication organizations.
3. Take into account the
use conditions of radio frequency in Vietnam; adopt proper roadmap for
transforming from current conditions to the Planning.
4. Satisfy channel demand
in upcoming years and potentially introduce new technologies into use.
Article 5. Contents of planning
The Planning for subchannels for fixed and
mobile services via frequency range of 30 - 30000 MHz is accompanied by
conditions for use of channels, including:
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b) Planning for subchannels for fixed and mobile
services via frequency range of 1000 - 30000 MHz under Appendix 2.
Article 6. Organizing implementation
1. The Authority of Radio
Frequency Management is responsible for popularizing and guiding implementation
of this Circular.
2. Organizations and individuals
using radio frequency are responsible for doing so for the right purpose,
services, and conditions under this Circular and other radio frequency laws.
3. Organizations and
individuals manufacturing, importing, and selling radio communication equipment
are responsible for ensuring that the radio communication equipment has
technical features suitable for radio services and conditions under Circular
and other radio frequency laws.
Article 7. Implementation
1. This Circular comes into
force from January 28, 2019 and replaces Circular No. 13/2013/TT-BTTTT dated
June 14, 2013 of the Minister of Information and Communications.
2. Chief of Office,
Director of the Authority of Radio Frequency Management, heads of agencies and
entities affiliated to the Ministry of Information and Communications, domestic
and foreign organizations, individuals using, manufacturing, importing, and
selling radio communication equipment in Vietnam for use in Vietnam are
responsible for the implementation of this Circular.
3. Difficulties that arise
during the implementation of this Circular should be reported to the Ministry
for consideration./.
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MINISTER
Nguyen Manh Hung