next up previous contents
Next: UTRAN Up: UMTS: The Third Generation Previous: UMTS Architecture   Contents

UMTS Interfaces

The Core Network of UMTS is same as that of GPRS. The air interface is totally different. We therefore only discuss the air interface. The air interfaces in UMTS are listed below:

The Iu, Iub, and Iur interfaces are based on ATM transmission principles.



2002-10-12