There are many ways to improve the psr. All depends of the reasons for bad psr
Check your paging strategies (Alex will give you diferent strategies depending on your’s network size and topology)
Then you need to check counters
Is the number of pages/seg to High?
Is the number of pagecong or pagetoold (on cell level ) to high?
Maybe you can split the location areas with bad psr in two
If you can’t do the LA splitting maybe you can add a new CCCH to all the cells with the highest number of pagecong and pagetoold (this can be done with a G11 feature called “multiple CCCH”)
these three simple steps will improve your psr