Determining The Average Cell Size; Principles To Perform A Site Survey - Avaya DECT R4 Installation And Administration Manual

Determining the average cell size

Survey the site to determine the number and position of base stations required to match
coverage and traffic needs. For a site survey, you need a site survey tool and floor plans. Take
samples to determine an average cell size and indicate base station positions on the map and
the area covered by each base station. After this, you can verify the planned positions with the
site survey tool and can make a final plan with help of the traffic requirements.
Because coverage for air sync and speech differs, two average cell sizes need to be
determined, one for the speech coverage and one for the air sync coverage.
For information on how to use the site survey tool, please refer to the appropriate user guide.

Principles to perform a site survey:

Observe the building to find a typical area
Due to renovations or expansions, older buildings might have areas with different structures.
However, within these areas you can find a certain uniformity in structure.
Find an area in the building with a typical structure and the expected cell size. Use this area to
determine the typical cell size. When you have a building with different structures, determine the
typical cell size for each of those areas to detect the differences in the typical cell size.
Figure 12: Measurement of typical cell size
Base station of
=
site survey tool
Measure the horizontal cell size on the middle floor. See (1) in figure 12.
To determine the cell size:
1. Install the site survey base station in the middle of the 'typical area'.
Avaya DECT R4 - Installation and Maintenance Guide
40 metres
2
1
3
Determining the average cell size
1= 40 metres
2= 20 metres
3= 20 metres
3.5 metres
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