Patent ID: 9392609
Filing Date: 2016-07-12
CPC Classification: H04L,H04W

Claim Text:
1. A method for removing inter-heterogeneous cell interference, the method performed by a femto user equipment (UE) and comprising: receiving, from a femto evolved Node B (eNB) which is a serving eNB, a signal for instructing that a request for interference coordination information required for inter-heterogeneous cell interference coordination to a macro eNB, when a traffic data to be transmitted from the femto eNB to the femto UE exists and an amount of the traffic data is smaller than a predetermined threshold; transmitting, to the macro eNB, a predetermined physical random access channel (PRACH) preamble which notifies the request through a PRACH; receiving, from the macro eNB, the interference coordination information; and transmitting, to the femto eNB, the received interference coordination information, wherein the femto eNB is heterogeneous to the macro eNB.