Section: Annex E (informative): Change history 4 General principles
Content: The general principles guiding the definition of NG-RAN architecture as well as the NG-RAN interfaces are the following: - Logical separation of signalling and data transport networks. - NG-RAN and 5GC functions are fully separated from transport functions. Addressing scheme used in NG-RAN and 5GC shall not be tied to the addressing schemes of transport functions. The fact that some NG-RAN or 5GC functions reside in the same equipment as some transport functions does not make the transport functions part of the NG-RAN or the 5GC. - Mobility for an RRC connection is fully controlled by the NG-RAN. - The NG-RAN interfaces are defined along the following principles: - The functional division across the interfaces have as few options as possible. - Interfaces are based on a logical model of the entity controlled through this interface. - One physical network element can implement multiple logical nodes.