What is the typical Call Setup Time for a 3G UE to 3G UE Call? What are the possible RF related causes for a delayed CST in this type of call?

• 6 to 9 seconds
• Multiple RRC Attempts (UE is on poor coverage – need more than Access Attempt)
• Delayed Page Responses
• High Load on Paging and/or Access Channel
• Paging / Access Parameters

Download UMTS Radio System Planning and Optimization Guide

What are the possible causes for a lower PSR?

There are several different reason for low Paging Success Ratio

- Non-continuous RF Coverage – UE going in and out of coverage area frequently
- Very High ‘Periodic Location Update Timer’ – Keeping UEs in VLR long time after it moved out of coverage
- Lower Paging Channel Power
- Access Channel Parameter Issues
- Delayed Location Update when crossing the LA / CN Boundaries

Also Check

E Book on GPRS and EDGE Performance

What is G-RAKE Receiver?

What is Paging Success Ratio? What is the typical PSR that you have seen in a WCDMA UMTS network?

Paging Success Ratio:

Its Paging Responces to the Paging Attempts in WCDMA UMTS network.

Typical Value for Good WCDMA Cellular Network is greater than 90%.