Channel state information collection for wireless communication system with beamforming

A user equipment (UE), comprising:

• a radio frequency (RF) transceiver that transmits and receives radio signals to/from a base station in a beamforming network, wherein the UE establishes a data connection with the base station via a dedicated beam, and wherein the dedicated beam has a fine resolution with narrower angular coverage and longer-by-narrower spatial coverage;
• and
• a channel state information (CSI) collector that monitors a set of fallback beams, wherein each fallback beam has a coarse resolution with wider angular coverage and shorter-by-wider spatial coverage, wherein the shorter-by-wider spatial coverage of each fallback beam is larger than the longer-by-narrower spatial coverage of the dedicated beam, wherein the UE receives downlink reference signals (DL-RSs) periodically transmitted via each of the fallback beams, wherein the UE estimates CSI for each fallback beam, wherein the UE transmits CSI feedback information to the base station, and wherein the data connection is switched from the dedicated beam to a selected fallback beam when a channel quality associated with the dedicated beam falls below a threshold.