port group and port subset indication in a csi-rs resource for new radio (nr)

摘要

the present invention relates to resources of the channel state information reference signal (csi-rs) that specify the resource elements (res) in which a csi-rs can be transmitted, together with a set of ports on the base station from which the csi-rs can be transmitted. Within the port set for a specific csi-rs resource, one or more port groups can be configured. each port group identifies a port group associated with a channel. in some examples, a group of ports identifies the ports on which CSIs can be measured. other ports within the set of ports that are outside the port group can be used for interference measurement.