Alcatel OmniPCX Enterprise R7.1 Installationshandbuch PDF herunterladen (Seite 119)

External antennae

According to the ETSI EN 301 406 standard, DECT antenna gain is limited to 12 dB +/-3dB. In

the case of external directional antennae, if a minimum safety distance of 50 cm is respected,

the SAR value is the same as the value obtained in the case of an integrated omni-directional

antenna (and therefore, lower than: 0.5 W/kg).

4.8.2.2.3 CONFORMANCE PERIMETER FOR EXPOSURE OF THE PUBLIC

- Integrated omni-directional antennae: no limit for the conformance perimeter

- External antenna (directional): the installation must allow for a safety perimeter respecting

a minimum distance of 50 cm.

4.8.2.3 RECOMMENDATIONS FOR INSTALLATION

4.8.2.3.1 Standard Topology.

The various building infrastructures are grouped into three types of geometric shape.

Coverage areas SQUARE: Coverage areas RECTANGULAR

Coverage areas ROUND

The distances quoted below give an idea of typical range of a base station. It is clear that a

rectangular zone requires more base stations to provide full coverage.

4.8.2.3.2 Layout technique

For structures with a number of floors, different solutions can be envisaged as a function of:

- the coverage obtained at each level.

- the position of the Alcatel-Lucent 4070 IO/EO (higher or lower level).

Installation examples

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Alcatel OmniPCX Enterprise R7.1 Installationshandbuch Seite 119