UMTS PS Service Analysis Guide

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Research on PS data transmission performance belongs to the end-to-end (UE <-> data service server) category. Every constitutional part of the network may affect the data transmission performance. When doing data transmission performance optimization, mostly we focus on RAN side (RNC-NodeB-UE) and other system parts (CN, FTP server and internet etc.). We usually use exclusive method to judge in which NE the service is interrupted and in which NE the packet is lost, which leads to the rate decrease. Capture packets at the interfaces of NEs or use NE tracing function to specify the NE, and then locate the problem based on NE features or experiences.
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