A First Radio Network Node (RNN), a Second RNN and Methods Therein for Establishing a Communications Interface between the First RNN and the Second RNN

摘要

A first radio network node (208) and a method for establishing a communications interface between the first radio network node (208) and a second radio network node (210). The first radio network node is configured to provide one or more Evolved Universal Terrestrial Radio Access (E-UTRA) resources and the second radio network node is configured to provide one or more New Radio (NR) resources. Further, the first and second radio network nodes are operating in a wireless communications network (200). The first radio network node obtains a Transport Network Layer (TNL) address of the second radio network node from one out of a first core network node (204); and another first radio network node (208) acting as a proxy. Furthermore, the first radio network node established a communications interface between the first and second radio network nodes based on the obtained TNL address.