scope:

The present document specifies the minimum requirements for system parameters of Point-to-Multipoint (P-MP) Radio Systems in the terrestrial Fixed Services (FS) operating in the bands 24,5 GHz to 29,5 GHz.

Point-to-Multipoint (P-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).

The P-MP system in the band 24,5 GHz to 29,5 GHz (CEPT Recommendation 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.

P-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 P-MP applications:

the transmission of:

- voice;

- fax;

- voice band data;

- telex;

related to analogue interfaces, and

- 64 kbit/s;

- ISDN;

- digital video;

- digital audio;

- Internet access,

related to digital interfaces,

- further applications like ATM, Frame Relay, LAN, WAN may also be provided.

The equipment covered by EN 301 213 should be designed to be able to meet the network performance requirements foreseen by ITU-R Recommendations F.696-2 [5], F.697-2 [6], for medium and local grade portion or ITU-Recommendation F.1189 [7] for the national portion (access or short haul) of the digital connection following the criteria defined in ITU-T Recommendation(s) G.821 [8] and/or G.826 [9].

The availability requirements are under further study by the relevant bodies.

Network operators may choose different performance and availability requirements in order to extend the possible area of application thus fitting to their network needs.

Radio terminals from different manufacturers are not intended to interwork at radio frequency (i.e. no common air interface).

Regulatory bodies should take into account the inband coexistence between P-MP systems using differing access methods.

The present document defines the requirements of radio terminal and radio-relay equipment including the interfaces. The requirements for multiplex, network management and antenna/feeder equipment may be addressed elsewhere.