mode if a terminal 6 such a mobile station ms detects a signal from a base station 2 belonging to the femto base station list according to the advertisement of serving macro base station 7 it may make a handover decision the criteria for handover from macro base station 7 to femto base station 2 may e g be based on the network channel condition or some other pre defined terms such a handover is named here as hand in handover for the purpose of hand out handover the femto base station 2 may optionally provide the binding macro base station information e g by neighbour advertisement message so that it may be easy for the terminal 6 to quickly handover to the macro base station 7 at the edge of the femtocell 1 the valid binding of femto base station 2 to macro base station 7 may be e g periodically updated over the wired link 4 5 or other information may be periodically or at defined or arbitrary times sent from the base station 2 over the wired link 4 5 so that a break or shut down of the femto base station 2 can be detected by one or more of the network 8 10 14 due to lack of such updates or sending of information at the expected times when detecting a break.