Product manual

Configuration directions, Base station planning - additional information
Technical Product Manual - DCT1800-GAP
TD 92093 (1/LZBNB 103 108 R4D) / 2006-03-09/ Ver.C
© 2006
15
Chapter 4 Base station planning - additional information
4.1 Introduction
As is already known, there are a number of different uses to bear in mind for an installation:
• Open area
• Office environment
• Industrial environment (incl. metal halls)
Small sites are usually no problem because they usually have a homogeneous layout. Take the
example of a new four-floor office complex. Each floor will look the same so that a site survey involves
a number of reference measurements to determine the typical cell size. You plot this typical cell size
on the plan from which a number of base stations emerge. You then verify this by checking a few of
them quickly.
The larger the site, the more complex usually the site survey becomes. The reason is that the overall
picture always becomes less homogeneous, leading to more measurements having to be made
because a situation is difficult to estimate in advance. Generally the client has particular requirements,
such as coverage in a lift, underground car park, conference rooms, outdoors etc.
4.2 What to look out for
There are a number of standard elements in a site survey that you must look out for. These are:
• Client’s requirements (quality or availability, and where exactly)
• Walls
• Ceilings/floors
• Outdoors/car park
• Fire-resistant walls/doors
• Location of the base stations (strategic, optimum)
• Metal halls
4.2.1 Client’s requirements
Always discuss the client’s precise requirements with him as a first step. Discuss with the client where
high quality is an absolute necessity and whether there are areas where it is sufficient for people to
be available (e.g. outdoors or in a production hall). Note that there is a clearly defined difference
between:
• Quality = a speech quality that is the optimum possible under the circumstances
• Availability = you are still available but the quality is inferior (crackling can be heard)
Before carrying out the actual survey, discuss what the client’s precise requirements are and where
the client can possibly save on a number of base stations.
Also discuss thoroughly what thoughts the client has on special “non-standard” areas (such as lifts,
stairwells, basements, indoor car parks, toilets, maintenance shafts, for example, for the lift and
ventilation system).