Rapporteur: Mr. Ng, Cheng Hock
(UTRAN overall description)
This TS describes the overall architecture of the E-UTRAN, including internal interfaces and assumptions on the radio, S1 and X2 interfaces.
The general principles guiding the definition of E-UTRAN Architecture as well as the E-UTRAN interfaces are the
Logical separation of signalling and data transport networks.
E-UTRAN and EPC functions are fully separated from transport functions. Addressing scheme used in E-UTRAN and EPC shall not be tied to the addressing schemes of transport functions. The fact that some E-UTRAN or EPC functions reside in the same equipment as some transport functions does not make the transport
functions part of the E-UTRAN or the EPC.
Mobility for RRC connection is fully controlled by the E-UTRAN.
When defining the E-UTRAN interfaces the following principles were followed:
The functional division across the interfaces shall have as few options as possible.
Interfaces should be based on a logical model of the entity controlled through this interface.
One physical network element can implement multiple logical nodes.