Patent ID: 9565667
Date: 2017-02-07
CPC Classifications: H04L,H04W

Claim:
1. A method for receiving a downlink signal through an Enhanced Physical Downlink Control Channel (EPDCCH) in a wireless communication system by a user equipment (UE), the method comprising: receiving, via radio resource control (RRC) signaling, a channel state information reference signal (CSI-RS) resource configuration for a non-zero power CSI-RS; receiving a demodulation reference signal (DMRS) in one or more EPDCCH physical resource block (PRB) sets; and attempting to decode an EPDCCH in each of the one or more EPDCCH PRB sets based on the DMRS, wherein, if a transmission mode configured in the UE is set to a Coordinated Multi-Point (CoMP) operation mode, the UE makes a quasi co-located (QCL) assumption that the non-zero power CSI-RS configured by the RRC signaling and the DMRS are QCL.