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3.9.4.1
3.9.4.2
3.9.4.3
5/1531-ANF 901 14 Uen D3 2013-11-28
Outdoors/car park
Coverage outdoors is usually not a problem since there are few or no
obstacles. The base station location depends on the client and on the
size of the area to be covered. If the client wishes to have as few base
stations as possible installed outside (because of the costs of the
outdoor housing), it is possible to install one or more base stations with
the antennas in front of a window.
The base station must be able to 'see' as much as possible of the
outdoor area to be covered (that is, there must be as few obstacles as
possible between the base station and the covered area). Ensure that a
measurement is carried out in order to check how much coverage a base
station provides to the outdoor area, the intention is not to install all the
base stations in front of windows, since this is not the ideally position to
provide indoor coverage (normally 1-2 base stations are sufficient).
Table 2 Type of glass and its effect on radio coverage.
Type of glass
Normal glass
Surface coated float glass
Wired glass (fine-mesh)
Stairways
The major problem with stairways is that they are often sited in a corner
of the building. Coverage is not a problem in itself, but it must be seen in
the context of the overall planning. There are various ways of providing
coverage for a stairway. Either the base station is installed directly in the
stairway as a dedicated base station for the stairway, or it is installed in
the close vicinity of a stairway. The method depends on the type and
location of the stairway (is it an open or closed stairway; is it sited in a
corner of the building or in the centre and so on).
Toilet room
Toilet rooms are generally in awkward positions for a site survey: behind
or next to lifts, in or next to stairwells or in a corner of the building. A base
station installation in the toilet room itself can be considered. If placed
outside the toilet room it should be placed in the vicinity of the toilet room
in a location where the base station can 'see' as much as possible of the
toilet room (preferably the entrance because doors are generally made
of wood and these damp the signal less than the walls).
If the base station is placed in the vicinity of the toilet room, locate it in a
way that it provides coverage for as much of the rest of the floor as
possible.
B
ASE STATION PLANNING
Range in meters
150-300
30-50
0-20
27
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