Deciding Optimization Goal

3 Test Preparations

Test preparations include the following four aspects:

· Deciding optimization goal

· Dividing clusters

· Deciding DT route

· Preparing tools and data

3.1 Deciding Optimization Goal

The key of RF optimization is to solve problems as below:

· Weak coverage

· Pilot pollution

· High SHO Factor based on DT

Actually, different operators might have different standards on KPI requirements, index definition, and attention. Therefore the RF optimization goal is to meet the coverage and handover KPI requirements in the license or business target.

Define the indexes as required by the target as below:

The index definition is the percentage ratio of the sampling points with the index (such as CPICH Ec/Io) greater than the reference value in all sampling points.

Usually after RF optimization, the network must meets the index requirements listed below.

List of RF optimization objectives in R99 networks :

Index	Reference	Remarks
CPICH Ec/Io ≥ –9dB	≥ 97% in urban area	According to test result from the scanner, in unloaded and outdoor conditions, in planning coverage areas, test in a grid-like route to cover all cells.
	≥ 97% in suburban area
CPICH RSCP ≥ –95dBm	≥ 98% in urban area	According to test result from the scanner, in unloaded and outdoor conditions, in planning coverage areas, test in a grid-like route to cover all cells. The coverage level request is basic. If operators have penetration loss request, add the penetration loss to the coverage level.
	≥ 95% in suburban area
SHO Factor based on DT	30%–40%	The SHO Factor based on DT should be 5% to 10% lower than the goal, because the following optimizations cause the soft handover factor to increase
Pilot pollution ratio	≤ 5%	–