Patent ID: 8260270
Filing Date: 2012-09-04
Classification: H04W

Abstract:
1. A method for transmitting a signal to reduce Inter-Cell Interference (ICI) at a femto Base Station (BS), the method comprising: determining whether there is a User Equipment (UE) within an area of the femto BS and whether the UE is in an active mode; operating in a first mode of alternating a first Available Interval (AI) with a first UnAvailable Interval (UAI) in time, if no UE exists within the area of the femto BS, the first AI being an interval in which the femto BS transmits a signal and the first UAI being an interval in which the femto BS does not transmit a signal; operating in a second mode of alternating a second AI with a second UAI in time, if the UE exists within the area of the femto BS and operates in an inactive mode, the second AI being an interval in which the femto BS transmits a signal and the second UAI being an interval in which the femto BS does not transmit a signal, the second UAI being shorter than the first UAI; operating in a third mode of continuously transmitting a signal, if the UE exists within the area of the femto BS and operates in the active mode; and transmitting information about UEs that can access the femto BS and the paging group ID of an area in which the femto BS is located to a Femto GateWay (FGW) or a Femto Management System (FMS) such that a Radio Network Controller (RNC) notifies the femto BS of movement of a UE, that can access the femto BS, into the area of the femto BS, wherein information about a location of the UE is acquired from a core network tracking a paging group Identifier (ID) of the UE, and wherein a node of the core network tracking the paging group ID of the UE is the RNC.