Patent ID: 9596695
Date: 2017-03-14
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method for reducing interference in a communication network including a first node and a first node coverage area, a second closed subscriber group (CSG) node having a CSG cell, transmitting at a lower power than the first node and located within the first node coverage area, and one or more user equipment (UE) devices located within the first node coverage area, comprising: receiving, at the second CSG node, a request for Physical Resource Block (PRB) utilization from the first node; requesting, by the second CSG node, interference cancellation (IC) capability of the one or more UE devices; receiving an IC capability report from the first node for the one or more UE devices; determining if the one or more UE devices is IC capable based on the received capability report and, if any of the UE devices are not IC capable, the method further comprising: reporting the PRB utilization to the first node; receiving, from the first node, instructions for the second CSG node to operate in an interference cancellation (IC) mode with an (X:Y) operating ratio of a number of inactive frames (X) to a total number of frames in the CSG cell (Y), the operating ratio determined based on the reported PRB utilization; and switching, at the second CSG node, to an IC mode that mutes, according to the operating ratio, transmission of reference signals causing interference for the UE devices.