CPC H04L 5/0048 (2013.01) [H04L 5/0007 (2013.01); H04L 5/0057 (2013.01)] | 20 Claims |
1. A method for use in a network node of transmitting channel state information reference signals (CSI-RS), the method comprising:
transmitting a number M of CSI-RS ports to one or more wireless devices, wherein a fraction of the M ports are transmitted over a first physical resource block (PRB) and a remaining fraction of the M ports are transmitted over a second PRB;
M being equal to twenty-eight;
the first PRB including resource elements, the resource elements of the first PRB including at least four groups of aggregated CSI-RS resources, each of the at least four groups including four resource elements, and each of the at least four groups carrying four antenna ports; and
the second PRB including resource elements, the resource elements of the second PRB including at least three groups of aggregated CSI-RS resources, each of the at least three groups including four resource elements, and each of the at least three groups carrying four antenna ports.
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