US Patent No. 10,716,169

FIRST RADIO NETWORK NODE (RNN), A SECOND RNN AND METHODS THEREIN FOR ESTABLISHING A COMMUNICATIONS INTERFACE BETWEEN THE FIRST RNN AND THE SECOND RNN


Patent No. 10,716,169
Issue Date July 14, 2020
Title First Radio Network Node (rnn), A Second Rnn And Methods Therein For Establishing A Communications Interface Between The First Rnn And The Second Rnn
Inventorship Alexander Vesely, Feldbach (AT)
Angelo Centonza, Stockholm (SE)
Paul Schliwa-Bertling, Ljungsbro (SE)
Assignee Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 10,716,169

1. A method performed by a first radio network node for establishing a communications interface with a second radio network node in a wireless communications network, wherein the first radio network node is configured with an Evolved Universal Terrestrial Radio Access (E-UTRA) radio access technology (RAT) and the second radio network node is configured with a New Radio (NR) RAT, the method comprising:obtaining a Transport Network Layer (TNL) address of the second radio network node from a further radio network node configured to act as a proxy node in the wireless communications network,
wherein the further radio network node is configured for wireless communication with wireless devices via the E-UTRA RAT,
wherein the first radio network node is connected to a core network, and the second radio network node has no control-plane (CP) connection to the core network,
wherein a node identifier of the second radio network node is different from a node identifier of the first radio network node,
wherein the node identifier of the second radio network node can be derived from a NR cell identifier and the node identifier of the first radio network node can be derived from an E-UTRA cell identifier; and
establishing the communications interface between the first radio network node and the second radio network node based on the obtained TNL address.