What are the major differences between GSM and UMTS handover decision?


GSM:
 Time-based mobile measures of RxLev and RxQual – mobile sends measurement report every SACH period (480ms).
 BSC instructs mobile to handover based on these reports.
UMTS:
 Event-triggered reporting – UE sends a measurement report only on certain event “triggers”.
 UE plays more part in the handover decision.

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