Patent ID: 8599711

Claim:
An apparatus comprising: one or more processors; and one or more memories including computer program code, the one or more memories and the computer program code configured, with the one or more processors, to cause the apparatus to perform the following: receiving information indicating one or more sets of reference signal patterns from a first transmission point, wherein the one or more sets of reference signal patterns comprise one or more muting reference signal patterns that have zero transmit power for certain frames of transmissions by the first transmission point, and at least one of the indicated one or more sets of reference signal patterns corresponds to one of one or more other transmission points; measuring the channel quality for the indicated one or more sets of reference signal patterns using the one or more muting reference signal patterns; and reporting indications of the measured channel quality for the indicated one or more sets of reference signal patterns to the first transmission point, wherein the first transmission point is coupled via a data and control path to the one of one or more other transmission points.