Patent ID: 8897182

Claim:
A method for transmitting CSI-RS muting information reflecting CSI-RS intervention of a neighboring cell to a user equipment by a specific cell in a multicell environment, the method comprising: receiving CSI-RS information of the neighboring cell including at least one of a CSI-RS pattern, the number of CSI-RS antenna ports, a CSI-RS transmission cycle (duty cycle), CSI-RS transmission subframe offset information, from the neighboring cell; determining a muting region which is a time/frequency resource region that overlaps with a CSI-RS of the neighboring cell and therefore requires muting based on the CSI-RS information of the neighboring cell; generating the muting information including a first data field that indicates a cycle and an offset of muting subframes, each of which includes the muting region, and a second data field that indicates a specific muting pattern in which muting is to be performed in the muting subframes and has one bit number among 12 bits to 28 bits, which indicates, in a bitmap format, whether to apply muting, and transmitting the generated muting information to the user equipment.