scope:

The present document applies to Complementary Ground Components (CGC) operating as part of a satellite network. These Complementary Ground Components (CGC) transmit only to the User Equipment or transmit and receive to/from the User Equipment in the frequency bands allocated to the Mobile Satellite Service (MSS) on a primary basis as defined in table 1.

NOTE 1: The CGC may include various types of interfaces, to terrestrial and/or satellite networks, but their specifications are out of the scope of the present document.

The present document applies to Complementary Ground Component (CGC) radio equipment type deployed in Mobile Satellite Services systems which have the following characteristics:

• These CGCs may have both transmit and receive capabilities and are part of a hybrid Satellite/terrestrial network.

• These CGCs operate with an assigned channel signal bandwidth (CBw) of 1 MHz or greater. 

• These CGCs may be local coverage, medium coverage or wide coverage ground components.

• These CGCs may be an element in a multi-mode base station. It may consist of a number of modules with associated connections, or may be a self contained single unit.

If the CGC is an element in a multi-mode base station, unless otherwise stated in the present document, its requirements apply only to the CGC element of the terminal operating in the Mobile Satellite Service (MSS) frequency bands given in table 1.

The present document applies to the following terminal equipment types:

1) Complementary Ground Components for Wideband Satellite Systems.

The present document only applies to the radio interface between the CGC and the User Equipment.

The present document is intended to cover the provisions of Directive 1999/5/EC [1] (R&TTE Directive) article 3.2, which states that "..... radio equipment shall be so constructed that it effectively uses the spectrum allocated to terrestrial space radio communications and orbital resources so as to avoid harmful interference".

NOTE 2: In addition to the unwanted emission limits defined in clause 4.2.2 of the present document, additional operational constraints may be required to prevent harmful interference into services operating in the neighbouring bands outside the operational band defined in table 1.

In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of article 3 of the R&TTE Directive [1] may apply to equipment within the scope of the present document.

NOTE 3: A list of such ENs is included on the web site http://www.newapproach.org.