Scrambling code selection

A femtocell basestation for a cellular communications network, the basestation being adapted to select a scrambling code, for use in the basestation, by means of a method, the method comprising:

• receiving from a management system a list comprising at least one allowed scrambling code for femtocell basestations;
• detecting, in information broadcast by at least one macrocell basestation, at least one allowed scrambling code available in an area containing the basestation;
• determining whether use of at least one scrambling code that is allowed and is available in an area containing the femtocell basestation would cause interference with a respective at least one other femtocell basestation;
• and
• if it is determined that use of each scrambling code that is allowed and is available in the area containing the femtocell basestation would cause interference with a respective at least one other femtocell basestation,
• selecting a scrambling code which would cause interference with another femtocell basestation;
• and
• setting a broadcast parameter to ensure that a user equipment would perform a location update when moving between the coverage areas of said femtocell basestation and the other femtocell basestation, wherein the step of setting the broadcast parameter comprises setting a value tag of a broadcast Information Block which is different to an equivalent value tag of a broadcast Information Block used by the other basestation.