Mobile-satellite service
Mobile-satellite service (short: MSS ;also: mobile-satellite radiocommunication service) is – according to Article 1.25 of the International Telecommunication Union´s (ITU) Radio Regulations (RR)[1] – defined as «A radiocommunication service
- between mobile earth stations and one or more space stations, or between space stations used by this service; or
- between mobile earth stations by means of one or more space stations.
This service may also include feeder links necessary for its operation.»
- See also
- Main articles: Radio station and Radiocommunication service
Classification
In accordance with ITU Radio Regulations (article 1) variations of this radiocommunication service are classified as follows:
Mobile service (article 1.24)
- Mobile-satellite service (article 1.25)
- Land mobile-satellite service (article 1.27)
- Maritime mobile-satellite service (article 1.29)
- Aeronautical mobile-satellite service (article 1.35)
Frequency allocation
The allocation of radio frequencies is provided according to Article 5 of the ITU Radio Regulations (edition 2012).[2]
In order to improve harmonisation in spectrum utilisation, the majority of service-allocations stipulated in this document were incorporated in national Tables of Frequency Allocations and Utilisations which is with-in the responsibility of the appropriate national administration. The allocation might be primary, secondary, exclusive, and shared.
- primary allocation: is indicated by writing in capital letters (see example below)
- secondary allocation: is indicated by small letters
- exclusive or shared utilization: is within the responsibility of administrations
- Example of frequency allocation
| Allocation to services | ||
| Region 1 | Region 2 | Region 3 |
137–137.025 MHz
| ||
137.025–137.175
| ||
137.175–137.825
| ||
| 148–149.9 FIXED MOBILE except aeronautical mobile (R) MOBILE-SATELLITE (Earth-to-space) |
148-149.9
| |
149.9–150.05
| ||
| 156.7625-156.7875 MARITIME MOBILE Mobile-satellite (Earth-to-space) |
156.8125-156.8375 MARITIME MOBILE MOBILE-SATELLITE (Earth-to-space) |
156.8125-156.8375 MARITIME MOBILE Mobile-satellite (Earth-to-space) |
14–14.25 GHz
| ||
14.25–14.3
| ||
References
- ↑ ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.25, definition: mobile-satellite service / mobile-satellite radiocommunication service
- ↑ ITU Radio Regulations, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations
