Product Info

System Description WipLL Radio Technology - Physical Layer
25030311-08 Airspan Networks Inc. 2-41
2.6.7. Radio Planning Software Tool
To design an optimal fixed wireless broadband network, the operator requires an RF
design tool that includes features of a geographic information system (GIS) module,
a propagation prediction module, and a fixed wireless module.
The GIS module should map data that contain or can be assigned geographic
coordinates, for example, terrain elevation, land-use classification, site locations,
design area boundaries, roads, and highways.
The propagation prediction module should provide RF propagation analysis and
predictions. This module must support features that allow the propagation model to
be calibrated using drive test measurements.
The fixed wireless module should support directional CPE antennas for coverage,
capacity and interference analysis in LOS and NLOS conditions, and adaptive
modulation.
2.6.7.1. Geographic Information Systems Database
To enable detailed and accurate propagation prediction, terrain information must be
supplemented by a Geographic Information Systems (GIS) database. Clutter
databases are typically based on Satellite or Aerial photography, depending on the
resolution of the planning. Clutter databases should include Definition of Clutter
Types and Clutter Height relative to the underlying DEM.
The resolution of data varies depending on the environment at which the planning is
targeted. Airspan recommends the following:
 Rural: 10 to30 meters
 Urban: 5 to 20 meters
The specific format of the database depends on the planning tool. The planning
software provider or user’s manual should be consulted to obtain the appropriate
format.