WCDMA Interfaces

WCDMA Interfaces
Uu Interface: this is the WCDMA radio interface, which is the subject of the main part of WCDMA technology. This is also the most important open interface in UMTS.

Iu Interface: this connects UTRAN to the CN.

Iur Interface: the open Iur interface allows soft handover between RNCs from different manufacturers.

Iub Interface: the Iub connects a Node B and an RNC. UMTS is the first commercial mobile telephony system where the

Controller-Base Station interface is standardized as a fully open interface.