Mitigation of uci feedback errors for temporal-spatial-frequency (tsf)-based channel state information (csi) compression

A method performed by a wireless transmit/receive units (WTRU) for synchronizing temporal-spatial-frequency (TSF) information for channel state information (CSI) feedback, the method comprising:

• receiving configuration information, the configuration information comprising network (NW)-assistance information associated with NW-side TSF sync information and a condition for detecting misalignment between WTRU-side TSF sync information and the NW-side TSF sync information;
• determining that a misalignment event between the WTRU-side TSF sync information and the NW-side TSF sync information has occurred based on the NW-assistance information and the condition for detecting misalignment;
• determining a misalignment mitigation action responsive to the determining that the misalignment event between the WTRU-side TSF sync information and the NW-side TSF sync information has occurred, the misalignment mitigation action comprising at least one of resetting the WTRU-side TSF sync information or retransmitting missing uplink control information (UCI);
• and
• sending a report, wherein the report comprises an indication that the misalignment event between the WTRU-side TSF sync information and the NW-side TSF sync information has occurred and an indication of the misalignment mitigation action.