Apparatus and method for determining whether to provide a CSI report

A method performed by a User Equipment (UE) comprising a radio transceiver and a hardware processor, the method comprising:

• receiving via the radio transceiver an aperiodic channel state information (CSI) reporting request on a physical downlink control channel (PDCCH);
• determining a time gap between a last symbol of the PDCCH of which the aperiodic CSI reporting request is received and a first uplink symbol of an uplink channel for transmission of a corresponding CSI report, wherein the time gap is determined based on a timing advance value;
• determining a threshold based on subcarrier spacing used by the UE;
• determining whether the determined time gap is shorter than the determined threshold;
• and
• transmitting, on a condition the determined time gap is not shorter than the time threshold, the CSI report in response to the CSI reporting request,
• determining to ignore, on a condition the determined time gap is shorter than the time threshold, Downlink Control Information (DCI) used to trigger the CSI report,
• wherein the time threshold is further determined based on both of a processing capability of the UE and a CSI reporting combination to be reported.

A radio communication apparatus comprising:

• a radio transceiver;
• and
• a hardware processor configured to:
• transmit, to a User Equipment (UE) via the radio transceiver, an aperiodic channel state information (CSI) report request on a physical downlink control channel (PDCCH);
• and
• on a condition a time gap which is determined by the UE is not shorter than a time threshold, receive the CSI report from the UE via the radio transceiver in response to the CSI reporting request,
• wherein, on a condition the time gap is shorter than the time threshold, Downlink Control Information (DCI) used to trigger the CSI report is determined to be ignored by the UE,
• wherein the time gap is between a last symbol of the PDCCH of which the aperiodic CSI reporting request is received by the UE and a first uplink symbol of an uplink channel for transmission of a corresponding CSI report from the UE, wherein the time gap is determined based on a timing advance value, and
• wherein the time threshold is determined based on subcarrier spacing used by the WTRU, a processing capability of the UE, and a CSI reporting combination to be reported.

A method for a radio communication apparatus, a method comprising:

• transmitting, to a User Equipment (UE), an aperiodic channel state information (CSI) report request on a physical downlink control channel (PDCCH);
• and
• on a condition a time gap which is determined by the UE is not shorter than a time threshold, receive the CSI report from the UE in response to the CSI reporting request,
• wherein, on a condition the time gap is shorter than the time threshold, Downlink Control Information (DCI) used to trigger the CSI report is determined to be ignored by the UE,
• wherein the time gap is between a last symbol of the PDCCH of which the aperiodic CSI reporting request is received by the UE and a first uplink symbol of an uplink channel for transmission of a corresponding CSI report from the UE, wherein the time gap is determined based on a timing advance value, and
• wherein the time threshold is determined based on a subcarrier spacing used by the WTRU, a processing capability of the UE, and a CSI reporting combination to be reported.