Method for time domain channel properties reporting

A wireless transmit/receive unit (WTRU) comprising a processor and memory, the processor and memory configured to:

• receive a downlink (DL) reference signal on a DL channel;
• measure a Doppler related parameter value based on the DL reference signal;
• estimate one or more time domain channel properties (TDCPs) of the DL channel associated with one or more delays, wherein the one or more estimated TDCPs are based on the measured Doppler related parameter value;
• determine a confidence level for the one or more estimated TDCPs based on one or more of channel conditions, WTRU architecture, receive antenna configuration information, channel state information (CSI) reporting configuration, or system configuration;
• and
• send a report that indicates the one or more estimated TDCPs and the confidence level for the one or more estimated TDCPs.

A method performed by a wireless transmit/receive unit (WTRU), the method comprising:

• receiving a downlink (DL) reference signal on a DL channel;
• measuring a Doppler related parameter value based on the DL reference signal;
• estimating one or more time domain channel properties (TDCPs) of the DL channel associated with one or more delays, wherein the one or more estimated TDCPs are based on the measured Doppler related parameter value;
• determining a confidence level for the one or more estimated TDCPs based on one or more of channel conditions, WTRU architecture, receive antenna configuration information, channel state information (CSI) reporting configuration, or system configuration;
• and
• sending a report that indicates the one or more estimated TDCPs and the confidence level for the one or more estimated TDCPs.