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In the Cost Control page of the Optimization Wizard, the Cost Control Settings can be defined.

This page is opened by clicking the Next button at the Target Layers page of the

Optimization Wizard, if no constraint layers were selected, or at the additional Constraint Layers page, if one or more constraint layers were selected.

This Cost Control page of the Optimization Wizard is shown in Fig. 5-28 (e.g. for CDMA or UMTS network layers).

The Cost Control Settings slightly differ for different systems of the network layers due to the power definitions.

The Cost Control parameters are described in Table 5-11.

Table 5-11 Cost Control parameters

Parameter Unit /

If enabled, the optimization algorithms are affected as follows:

- Remove Redundant Sites or Cells tasks of a Site Selection optimization:

The priority for the evaluation of site or cell removals is defined by the sites‟ Rollout Status (configurable in the Site Settings – refer to section 4.5).

Namely, Not Existent sites are evaluated first, followed by the sites Planned for Acquisition, and finally the Existent sites are evaluated.

- Capacity and Coverage optimization:

Cost and effort are only accumulated for Existent sites. Any reconfiguration of a Not Existent site or a site Planned for Acquisition is assumed to imply no cost or effort at all.

- Site Integration optimization:

The configured RPI values (refer to section 8.1.3) are only considered for Existent sites, which are not declared To be integrated. (Otherwise, the RPI values would be considered for all sites, as usual.)

Cost Definition Mode

If Use Cell/Site Individual Cost is selected:

- The cost values are taken from the site and cell settings (refer to sections 4.5 and 4.6.1, respectively).

Otherwise, if Use Default Settings for all Cells/Sites is selected:

- The cost values are taken only from this Cost Control page of the Optimization Wizard and then apply to all sites and cells.

(The effort cannot be defined per site or cell.)

2

The cost and effort associated with a site visit for the implementation of optimization changes in the live network.

The cost value is only relevant, if Use Default Settings for all Cells/Sites is selected.

The currency unit depends on the Windows OS Regional and Language Options.

During the optimization process, the adoption of the first optimization change at any site increases the accumulated cost and effort by the amount defined here.

Cost and Effort Constraints Use Cost

Limit Use Effort Limit

{true;

false} The consideration of cost and effort can be activated or deactivated separately.

If activated, the cost control is applied in the Capacity and Coverage, the Site Integration, and the Overshooting Cells Optimizers as an additional constraint to the adoption of an optimization change during optimization.

Cost Limit

The limit for the cost and for the effort as accumulated over all adopted optimization changes.

The currency unit depends on the Windows OS Regional and Language Options.

Default Costs and Effort for Parameter Cost

The amount of the cost (financial expenses indicated in the local currency) and effort (labor time indicated in hours), which is associated with the implementation of certain optimization changes in the live network – depending on the type of cell parameter:

- Antenna Type

- Antenna Tilt (mechanical), Electrical Tilt, and

Remote Electrical Tilt - Antenna Azimuth

- Power

The currency unit depends on the Windows OS Regional and Language Options.

During the optimization process, the adoption of each

reconfiguration that changes the original cell parameter value increases the accumulated cost and effort by the amount defined here.

If during the iterative optimization process a cell parameter is

2 Moreover, the Optimization Progress chart can display the changed network

performance over the accumulated cost and effort (see also section 6.1.2).

If the limits are enabled, the Cost Control Settings are used as an additional constraint to the optimization. Clearly, if the reconfiguration of a cell parameter would increase the accumulated value for cost or effort such that either value exceeds the respective limit, the reconfiguration is not adopted.

This means that at the cost or effort limit, further reconfigurations are only adopted if they do not further increase the accumulated value, for example, a further

reconfiguration of a cell that has been changed already in a previous optimization run.

Fig. 5-28 Cost Control page of the Optimization Wizard (example for CDMA or UMTS)

Apart from these Cost Control settings, a very efficient way of cost control is already inherent to Radioplan ACP: the Required Performance Improvement thresholds (refer to section 8.1.3).

An overview of both options for cost control in Radioplan ACP is given in Table 5-12.

2 Table 5-12 Cost Control options in Radioplan ACP

Required Performance Improvement

Cost Control Settings Definition Threshold for the performance

improvement that is required to accept the change of a certain parameter during optimization, i.e.

 required benefit

Cost and effort associated with the implementation of a certain parameter change in the live network,

i.e.

A high required benefit makes the respective parameter change less probable.

High required benefits result in lower implementation costs.

 ultimate optimization result for given benefit settings

Cost and effort limits are additional constraints to the optimization.

When the limit is reached no more changes are allowed irrespective of their potential benefit.

 hard limitation by suppressing further changes

but only considered if enabled and only in addition to the required benefit Point of

configuration respective Optimizer settings

dialog Cost Control settings page of the

Optimization Wizard

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