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

摘要

A method in a first radio network controller, RNC, (105, 405) for handling a reuse of a scrambling code in a cellular network (100) is provided. The first RNC (105, 405) defines a set of scrambling codes. Each scrambling code in the defined set is locally reused by at least two cells in the cellular network (100). The first RNC (105, 405) receives a measurement report from a user equipment (180). The measurement report is related to a scrambling code that is comprised in the defined set of scrambling codes. The first RNC (105, 405) determines that the reported scrambling code is comprised in the defined set of scrambling codes. The first RNC (105, 405) initiates, based on the determination, 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.

主权项

1. A method in a radio network controller for handling a reuse of a scrambling code in a cellular network, the method comprising:
defining 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, receiving 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, determining that the reported scrambling code is comprised in the defined set of scrambling codes, and initiating, upon determining 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 initiating is performed 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.