Introduction
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The network
optimizer offered by AWE Communications is an addtional module for the
WinProp software package, which helps the user to increase
the efficiency in the network planning. Based on a given set
of transmitters the optimizer module selects the relevant
sites to obtain a good coverage. Even more the carriers are
automatically assigned to the transmitters to guarantee a
perfect frequency reuse.
The key features:
(* will be
available in the next release)
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Automatic selection of relevant sites
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The network
optimizer uses a sophisticated algorithm to assess the
relevance of each given site. Based on this assessment the
relevant sites can be identified. Predefined target values
are used to define the completeness of the coverage and thus
to declare the number of sites used in the solution. Using
this information as input, the network optimizer is able to
find the best constellation of sites for a given scenario.
The picture above shows an example of an
urban scenario. The enabled
sites are colored in white. All the other sites (not
displayed white arrows) have been identified as redundant by
the optimizer. The colored areas show the cell sizes of the
active transmitters.
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Automatic assignment of carriers
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The next step after
determination of relevant sites is the automatic assignment
of the carriers. The interference (SNIR) due to the reuse of
carriers is considered in the algorithm. Thus the algorithm
is able to find the best solution for the frequency reuse.
The picture above
shows the carrier assignment for an indoor scenario. Again,
the blue balls indicate the enabled antennas - all other
antennas were disabled by the network optimizer. Three
carriers are available and the automatic carrier assignment
leads to very reasonable results.
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Detailed evaluation of results
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The results obtained by the network optimizer are detailly
presented to the user. For each site selected by the
algorithm the following information is presented:
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Individual coverage area of cell (in percent)
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Coverage area in the real network (might be smaller
than
the individual coverage area due to interference)
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Carrier assigned to the site
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Priority of site
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