Method for measuring intensity of interference signal based on CSI-RS in wireless communication system and apparatus for same

A user equipment device measuring strength of an interference signal from a first eNode B in a CoMP (coordinated multipoint) environment, the user equipment device comprising:

• a wireless communication module configured to transceive a signal with eNode Bs;
• and
• a processor configured to access the wireless communication module and control an operation of the user equipment device,
• wherein the processor is further configured to
• receive a plurality of CSI-RSs (channel status information-reference signals) from a second eNode B via the wireless communication module using a first resource element (RE) pair and a second RE pair,
• receive a downlink signal from the first eNode B via the wireless communication module using the first RE pair and the second RE pair, and
• measure a plurality of interference strengths based on a plurality of the CSI-RSs and the received downlink signal, and
• wherein the first RE pair is muted and the second RE pair is an allocated PDSCH (physical downlink shared channel) of the first eNode B when the first RE pair and the second RE pair are configured by an identical antenna port.