Channel state information (CSI) processing for UE initiated CSI and downlink grant CSI

An apparatus for wireless communication, comprising:

• a memory storing computer-executable instructions;
• a transceiver;
• and
• a processing system coupled to the memory and the transceiver and configured to execute the instructions to:
• receive, via the transceiver, a downlink grant scheduling a physical downlink shared channel (PDSCH) and a demodulation reference signal (DMRS);
• determine to report a channel state information (CSI) in response to a measurement of a downlink measurement resource when a measured spectral efficiency of the downlink measurement resource differs from a spectral efficiency indicated for the PDSCH by more than a threshold;
• determine a reserved uplink resource on which to report the CSI;
• and
• transmit, via the transceiver, a CSI report on the reserved uplink resource.

An apparatus for wireless communication, comprising:

• means for receiving a downlink grant scheduling a physical downlink shared channel (PDSCH) and a demodulation reference signal (DMRS);
• means for determining to report a channel state information (CSI) in response to a measurement of a downlink measurement resource when a measured spectral efficiency of the downlink measurement resource differs from a spectral efficiency indicated for the PDSCH by more than a threshold;
• means for determining a reserved uplink resource on which to report the CSI;
• and
• means for transmitting a CSI report on the reserved uplink resource.

A non-transitory computer-readable medium storing computer executable code, the code when executed by a processor causes the processor to:

• receive a downlink grant scheduling a physical downlink shared channel (PDSCH) and a demodulation reference signal (DMRS);
• determine to report a channel state information (CSI) in response to a measurement of a downlink measurement resource when a measured spectral efficiency of the downlink measurement resource differs from a spectral efficiency indicated for the PDSCH by more than a threshold;
• determine a reserved uplink resource on which to report the CSI;
• and
• transmit a CSI report on the reserved uplink resource.