First RNC, a second RNC, a base station, an OAM node and methods therein for handling a reuse of a scrambling code in a cellular network

A radio network controller for handling a reuse of a scrambling code in a cellular network, the radio network controller comprising:

• a processor that defines a set of scrambling codes, wherein each scrambling code in the defined set of scrambling codes is locally reused in at least two cells in the cellular network, and
• a receiver that receives a measurement report from a user equipment, which measurement report is related to a scrambling code that is comprised in the defined set of scrambling codes,
• wherein the processor determines that the reported scrambling code is comprised in the defined set of scrambling codes, and
• the processor initiates, based on the determination that the reported scrambling code is comprised in the defined set of scrambling codes, a process for identifying, among the at least two cells in which the reported scrambling code is locally reused, an originating cell from which the reported scrambling code originates,
• wherein the processor performs the initiating by sending a respective cell identification request to each respective base station that serves a respective cell of the at least two cells in which the reported scrambling code is locally reused, which cell identification request comprises an identifier of the user equipment, and which cell identification request commands the respective base station to detect the identifier of the user equipment within the respective cell.