Section: 5.26.1 Architecture Principles for Configuration Transfer
Content: Configuration Transfer between two RAN node provides a generic mechanism for the exchange of information between applications belonging to the RAN nodes. In order to make the information transparent for the Core Network, the information is included in a transparent container that includes source and target RAN node addresses, which allows the Core Network nodes to route the messages. The mechanism is depicted in figure 5.26 1. Figure 5.26-1: inter NG-RAN Configuration Transfer basic network architecture The NG-RAN transparent containers are transferred from the source NG-RAN node to the destination NG-RAN node by use of Configuration Transfer messages. A Configuration Transfer message is used from the NG-RAN node to the AMF over N2 interface, a AMF Configuration Transfer message is used from the AMF to the NG-RAN over N2 interface, and a Configuration Transfer Tunnel message is used to tunnel the transparent container from a source AMF to a target AMF over the N14 interface. Each Configuration Transfer message carrying the transparent container is routed and relayed independently by the core network node(s).