User guide

TD 92422GB
18 February 2010 / Ver. E
System Planning
Ascom IP-DECT System
4
3 Base Station Planning
The major task in installing an Ascom IP-DECT system is defining the number of base
stations required to cover an area to a satisfactory level. This chapter describes how a base
station planning can be made in order to gain full area coverage.
Small sites usually have a homogeneous layout, it is therefore easy to predict the field
pattern of the base station which makes the planning relatively easy. The larger the site,
the more complex the site survey becomes. Since a larger site often is less homogenous
the base station placing will be more difficult. Generally the client has particular
requirements which have to be considered, these requirements can be coverage in a lift,
underground car park, conference rooms, outdoors and so on.
The steps in base station planning are as follows:
1 Find out the client specific requirements, see 4 Client’s Requirements on page 5 and
5 Traffic Capacity of the System on page 6.
2 Determine the average cell size, see 6 Base Station Coverage on page 8 and 8 Site
Survey with IPBS Base Station on page 20.
3 Decide base station positions, see 9 Location of the Base Stations on page 23.
4 Make a base station plan, see 10 Making a Base Station Plan on page 26.
5 Perform a site survey to confirm that speech and air sync coverage is as expected.