Method and apparatus for updating neighboring base station relations

A serving radio base station of a first radio access network, serving a wireless radio device, the serving radio base station comprising:

• processing circuitry;
• memory containing instructions executable by the processing circuitry whereby the serving radio base station is operative to:
• receive a measurement report that is based on a reference signal received by the wireless radio device from a radio base station in a further radio access network, and comprises a non-unique identity of the radio base station in the further radio access network, the non-unique identity comprising a physical cell identity (PCI);
• send an identification request, referring to the radio base station in the further radio access network, to at least one neighbor radio base station of the serving radio base station, wherein the at least one neighbor radio base station reports the same non-unique identity as indicated in the received measurement report;
• receive, from the at least one neighbor radio base station of the serving radio base station, non-unique identities of radio base stations associated to the at least one neighbor radio base station and information about the identification of the radio base station in the further radio access network;
• and
• establish a neighbor relation using the information about the identification of the radio base station in the further radio access network, based on received identification information.

A non-transitory computer readable recording medium storing a computer program product for controlling a serving radio base station of a first radio access network, serving a wireless radio device, the computer program product comprising program instructions which, when run on processing circuitry of the serving radio base station, causes the serving radio base station to:

• receive a measurement report that is based on a reference signal received by the wireless radio device from a radio base station in a further radio access network and comprises a non-unique identity of the radio base station in the further radio access network, the non-unique identity comprising a physical cell identity (PCI);
• send an identification request, referring to the radio base station in the further radio access network, to at least one neighbor radio base station of the serving radio base station, wherein the at least one neighbor radio base station reports the same non-unique identity as indicated in the received measurement report;
• receive, from the at least one neighbor radio base station of the serving radio base station, non-unique identities of radio base stations associated to the at least one neighbor radio base station and information about the identification of the radio base station in the further radio access network;
• and
• establish a neighbor relation using the information about the identification of the radio base station in the further radio access network, based on received identification information.