The present document specifies the minimum requirements for system parameters of Point-to-Multipoint (P-MP) Radio
and Multipoint-to-Multipoint (MP-MP) Systems in the terrestrial Fixed Services (FS) operating in the bands 24,5 GHz
to 29,5 GHz.
Multipoint (MP) Radio-Relay Systems use in principle three different access methods, taking into account the basic
physical parameters of the frequency, the code and the time. This leads to the three basic access methods of:
Frequency Division Multiple Access (FDMA); Code Division Multiple Access (CDMA);
Time Division Multiple Access (TDMA).
In addition, in particular for wide-band applications, a multi-carrier transmission implementation may be applied, where
each sub-carrier uses one of the above access methodologies.
It should be noted that MP-MP systems differ from P-MP systems in that Terminal Stations may be connected directly
to one another in a series of short links and generally act as repeaters for traffic carried on to other stations. The
arrangement of links varies over time to accommodate changes in propagation characteristics and changes in the
subscriber base.
The MP system in the band 24,5 GHz to 29,5 GHz (ERC/REC T/R 13-02 [1]) will provide access to both public and
private networks (PSTN, PDN, etc.) by means of the various standardized network interfaces (e.g. 2-wire loop and
ISDN ranging from basic rate to n × 2 Mbit/s as well as local area to wide area data networks interfaces).
The system may be applied to build new access networks by means of a multi cellular architecture, covering urban and
suburban areas.
MP systems are generally configured as Pre-Assigned Multiple Access (PAMA) or as Demand Assigned Multiple
Access (DAMA) Radio Systems.
The present document covers the following MP applications:
voice; fax; voice band data; telex; related to analogue interfaces; and 64 kbit/s;ISDN; digital video; digital audio; Internet access;
relat (...abbreviated)