A user equipment, UE, comprising: a transceiver, and a processor configured to: receive, from a base station, BS, radio resource control, RRC, signaling configuration information including N channel state information, CSI, reporting settings, M CSI resource settings, N STATE triggering states and information on a number of bits of a downlink control information, DCI, field for requesting an aperiodic CSI report, wherein n is the number of bits of the DCI field and X STATE triggering states correspond to (2 ^n -1); when N STATE is greater than X STATE, receive, from the BS, a media access control, MAC, control element, CE, including selection information on selecting the X STATE triggering states from the N STATE triggering states, receive, from the BS, DCI including the DCI field for requesting the aperiodic CSI report, and determine a triggering state from the X STATE triggering states based on the DCI field for requesting the aperiodic CSI report; when N STATE is less than or equal to X STATE, receive, from the BS, DCI including the DCI field for requesting the aperiodic CSI report, and determine a triggering state from the N STATE triggering states based on the DCI field for requesting the aperiodic CSI report; trigger the aperiodic CSI report indicated by the DCI, wherein each of the N STATE triggering states is associated with at least one CSI report setting of the N CSI report settings, and each of the least one CSI report setting is linked with at least one CSI resource setting of the M CSI resource settings, and wherein N is at least one, M is at least one, wherein the transceiver is further configured to transmit to the BS the aperiodic CSI report on an uplink, UL, channel. a transceiver, and a processor configured to: receive, from a base station, BS, radio resource control, RRC, signaling configuration information including N channel state information, CSI, reporting settings, M CSI resource settings, N STATE triggering states and information on a number of bits of a downlink control information, DCI, field for requesting an aperiodic CSI report, wherein n is the number of bits of the DCI field and X STATE triggering states correspond to (2 ^n -1); when N STATE is greater than X STATE, receive, from the BS, a media access control, MAC, control element, CE, including selection information on selecting the X STATE triggering states from the N STATE triggering states, receive, from the BS, DCI including the DCI field for requesting the aperiodic CSI report, and determine a triggering state from the X STATE triggering states based on the DCI field for requesting the aperiodic CSI report; when N STATE is less than or equal to X STATE, receive, from the BS, DCI including the DCI field for requesting the aperiodic CSI report, and determine a triggering state from the N STATE triggering states based on the DCI field for requesting the aperiodic CSI report; trigger the aperiodic CSI report indicated by the DCI, receive, from a base station, BS, radio resource control, RRC, signaling configuration information including N channel state information, CSI, reporting settings, M CSI resource settings, N STATE triggering states and information on a number of bits of a downlink control information, DCI, field for requesting an aperiodic CSI report, wherein n is the number of bits of the DCI field and X STATE triggering states correspond to (2 ^n -1); when N STATE is greater than X STATE, receive, from the BS, a media access control, MAC, control element, CE, including selection information on selecting the X STATE triggering states from the N STATE triggering states, receive, from the BS, DCI including the DCI field for requesting the aperiodic CSI report, and determine a triggering state from the X STATE triggering states based on the DCI field for requesting the aperiodic CSI report; when N STATE is less than or equal to X STATE, receive, from the BS, DCI including the DCI field for requesting the aperiodic CSI report, and determine a triggering state from the N STATE triggering states based on the DCI field for requesting the aperiodic CSI report; trigger the aperiodic CSI report indicated by the DCI, wherein each of the N STATE triggering states is associated with at least one CSI report setting of the N CSI report settings, and each of the least one CSI report setting is linked with at least one CSI resource setting of the M CSI resource settings, and wherein N is at least one, M is at least one, wherein the transceiver is further configured to transmit to the BS the aperiodic CSI report on an uplink, UL, channel.