Radiocommunication service

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A radio station of amateur service Hami.jpg
A radio station of amateur service

Radiocommunication service is according to Article 1.19 of the International Telecommunication Union´s (ITU)RR, [1] defined as “a service…involving the transmission, emission and/or reception of radio waves for specific telecommunication purposes”.

International Telecommunication Union Specialised agency of the United Nations

The International Telecommunication Union, originally the International Telegraph Union, is a specialized agency of the United Nations (UN) that is responsible for issues that concern information and communication technologies. It is the oldest among all the 15 specialised agencies of UN.

The ITU Radio Regulations regulates on law of nations scale radiocommunication services and the utilisation of radio frequencies. It is the supplementation to the Constitution and Convention of the International Telecommunication Union. In line to the ITU Constitution and Convention and the ITU International Telecommunication Regulations (ITR), this ITU Radio Regulations belong to the basic documents of the International Telecommunication Union. The ITU Radio Regulations comprise and regulate the part of the allocated electromagnetic spectrum from 9 kHz to 275 GHz.

Transmission coefficient coefficient describing the amplitude, intensity, or total power of a transmitted wave relative to an incident wave

The transmission coefficient is used in physics and electrical engineering when wave propagation in a medium containing discontinuities is considered. A transmission coefficient describes the amplitude, intensity, or total power of a transmitted wave relative to an incident wave.

Contents

Radiocommunication is sub-divided into space and terrestrial radiocommunication. Space radiocommunication is defined in RR Article 1 as “any radiocommunication involving the use of one or more space stations or the use of one or more reflecting satellites or other objects in space”. Terrestrial radiocommunication is defined as “any radiocommunication other than space radiocommunication or radio astronomy”.

Sub-sets of services and branches

Some services are a sub-set of another service. For example, the land mobile service can be thought of as a branch of the mobile service which encompasses the land, maritime and aeronautical mobile services. For many terrestrial radiocommunication communication services, there is a parallel space radiocommunication service e.g., the broadcasting service and the broadcasting-satellite service.

Further sub-sets of some of these internationally defined services are often created at the national level. For example, within the land mobile service, a country may choose to define such services as paging, dispatch two-way radio service, cellular mobile telephone service, trunked mobile radio service, etc. Many of these definitions are based upon the nature of the service being provided rather than the international concept of a radiocommunication service. In other words, the term “service” can be used in these two different ways. No matter what definitions are adopted in a given country, with some specific exceptions which are allowed for in the ITU RRs, the use of the spectrum must fit in with the international definitions of radio services.

Table of Radiocommunication services

Section III of Article 1 of the ITU Radio Regulations sets out the definitions of some 40 radio services including such services as the fixed service, the mobile service, the land mobile service, the broadcasting service, the standard frequency and time signal service as well as the definition of radio astronomy which is defined as “a service involving the use of radio astronomy”. Note that the radio astronomy service is not a radiocommunication service but simply a service involving the use of radio astronomy.

ITU RR Article [2] Definition
N° Description Short
1.19Radiocommunication service See definition above.
1.20 Fixed service fixed
obsolete Aeronautical fixed service
1.21 Fixed-satellite service FSS
1.22 Inter-satellite service ISS
1.23 Space operation service SOS
1.24 Mobile service mobile
1.25 Mobile-satellite service MSS
1.26 Land mobile service LMS
1.27 Land mobile-satellite service LMSS
1.28 Maritime mobile service MMS
1.29 Maritime mobile-satellite service MMSS
1.30 Port operations service POS
1.31 Ship movement service SMS
1.32 Aeronautical mobile service AMS
1.33 Aeronautical mobile (R) service [3] AMS(R)
1.34 Aeronautical mobile (OR) service [4] AMS(OR)
1.35 Aeronautical mobile-satellite service AMSS
1.36 Aeronautical mobile-satellite (R) service AMS(R)S
1.37 Aeronautical mobile-satellite (OR) service AMS(OR)S
1.38 Broadcasting service BS A radiocommunication service in which the transmissions are intended for direct reception by the general public. This service may include sound transmissions, television transmissions or other types of transmission (CS).
1.39 Broadcasting-satellite service BSS
1.40 Radiodetermination service RDS
1.41 Radiodetermination-satellite service DRSS
1.42 Radionavigation service RNS
1.43 Radionavigation-satellite service RNSS
1.44 Maritime radionavigation service MRNS
1.45 Maritime radionavigation-satellite service MRNSS
1.46 Aeronautical radionavigation service ARNS
1.47 Aeronautical radionavigation-satellite service ARNSS
1.48 Radiolocation service RLS A radiodetermination service for the purpose of radiolocation.
1.49 Radiolocation-satellite service RLSS
1.50 Meteorological aids service
1.51 Earth exploration-satellite service EESS
1.52 Meteorological-satellite service
1.53 Standard frequency and time signal service SFTS
1.54 Standard frequency and time signal-satellite service SFTSS
1.55 Space research service SRS
1.56 Amateur service Amateur A radiocommunication service for the purpose of self-training, intercommunication and technical investigations carried out by amateurs, that is, by duly authorized persons interested in radio technique solely with a personal aim and without pecuniary interest.
1.57 Amateur-satellite service Amateur-satellite
1.58 Radio astronomy service RAS
1.59 Safety service
1.60 Special service

Related Research Articles

As defined by FS-1037C, radiodetermination is «the determination of the position, velocity or other characteristics of an object, or the obtaining of information relating to these parameters, by means of the propagation properties of radio waves.»

Mobile service is – in line to ITU Radio Regulations – a radiocommunication service between mobile and land stations, or between mobile stations (CV).

Inter-satellite service

Inter-satellite service is – according to Article 1.22 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «A radiocommunication service providing links between artificial satellites.»

Safety service

Safety service is – according to Article 1.59 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «A radiocommunication service used permanently or temporarily for the safeguarding of human life and property.»

Land mobile-satellite service

Land mobile-satellite service is – according to Article 1.27 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «A mobile-satellite service in which mobile earth stations are located on land.»

Aeronautical mobile service

Aeronautical mobile service is – according to Article 1.32 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «A mobile service between aeronautical stations and aircraft stations, or between aircraft stations, in which survival craft stations may participate; emergency position-indicating radiobeacon stations may also participate in this service on designated distress and emergency frequencies.»

Aeronautical mobile-satellite service

Aeronautical mobile-satellite service is – according to Article 1.35 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «A mobile-satellite service in which mobile earth stations are located on board aircraft; survival craft stations and emergency position-indicating radiobeacon stations may also participate in this service. . »

Port operations service

Port operations service is – according to Article 1.30 of the International Telecommunication Union's (ITU) Radio Regulations (RR) – defined as «A maritime mobile service in or near a port, between coast stations and ship stations, or between ship stations, in which messages are restricted to those relating to the operational handling, the movement and the safety of ships and, in emergency, to the safety of persons. Messages which are of a public correspondence nature shall be excluded from this service.»

Ship earth station

Ship earth station is – according to Article 1.78 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) – defined as «A mobile earth station in the maritime mobile-satellite service located on board ship.»

Ship movement service

Ship movement service is – according to Article 1.31 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «A safety service in the maritime mobile service other than a port operations service, between coast stations and ship stations, or between ship stations, in which messages are restricted to those relating to the movement of ships. Messages which are of a public correspondence nature shall be excluded from this service.»

Aeronautical mobile (R) service

Aeronautical mobile (R) service is – according to Article 1.33 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «An aeronautical mobile service reserved for communications relating to safety and regularity of flight, primarily along national or international civil air routes.»

Aeronautical mobile (OR) service

Aeronautical mobile (OR) service is – according to Article 1.34 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «An aeronautical mobile service intended for communications, including those relating to flight coordination, primarily outside national or international civil air routes.»

Aeronautical mobile-satellite (R) service

Aeronautical mobile-satellite (R)° service is – according to Article 1.36 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «An aeronautical mobile-satellite service reserved for communications relating to safety and regularity of flights, primarily along national or international civil air routes.»

Aeronautical mobile-satellite (OR) service

Aeronautical mobile-satellite (OR)°° service is – according to Article 1.37 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «An aeronautical mobile-satellite service reserved for communications relating to safety and regularity of flights, primarily outside national or international civil air routes.»

Radiodetermination-satellite service is – according to Article 1.41 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «A radiocommunication service for the purpose of radiodetermination involving the use of one or more space stations. This service may also include feeder links necessary for its own operation.»

Broadcasting-satellite service

Broadcasting-satellite service is – according to Article 1.39 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «A radiocommunication service in which signals transmitted or retransmitted by space stations are intended for direct reception by the general public. In the broadcasting-satellite service, the term “direct reception” shall encompass both individual reception and community reception.»

Maritime radionavigation service

Maritime radionavigation service is – according to Article 1.44 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as "A radionavigation service intended for the benefit and for the safe operation of ships."

Maritime radionavigation-satellite service

Maritime radionavigation-satellite service is – according to Article 1.45 of the International Telecommunication Union´s (ITU) Radio Regulations (RR) – defined as «A radionavigation-satellite service in which earth stations are located on board ships.»

Satellite radio system

Satellite radio system is – according to article 1.111 of the International Telecommunication Union´s (ITU) ITU Radio Regulations (RR) – defined as «A space system using one or more artificial earth satellites.»

Satellite emergency position-indicating radiobeacon station

Satellite emergency position-indicating radiobeacon station is – according to article 1.94 of the International Telecommunication Union´s (ITU) ITU Radio Regulations (RR) – defined as «An earth station in the mobile-satellite service the emissions of which are intended to facilitate search and rescue (SAR) operations.»

References

  1. ↑ ITU Radio Regulations, Section III – Radio services, Article 1.19, definition: Radiocommunication service
  2. ↑ International Telecommunication Union
  3. ↑ (R) – abbreviation to route flights (route)
  4. ↑ (OR) – abbreviation to flights others than on routes (off-route)
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