CQI, PMI, and RI reporting from UE to ENb is periodic or aperiodic.
Periodic report- Send in specific interval and specific subframe a UE is supposed to send the report is specified in RRC message
Aperiodic report is configured by RRC & DCI messages.Which is triggered by ENb.
I think if no such configuration for which periodic or aperiodic report generates, its difficult to send CQI/RI to ENb.