38.4223GPPNG-RANRelease 16TSXn signalling transport
The present document specifies the standards for signalling transport to be used across Xn interface. The Xn interface provides means for interconnecting two NG-RAN nodes. The Xn interface is a logical interface between two nodes of the NG-RAN. The present document describes how the XnAP signalling messages are transported over Xn.