Semi-persistent CSI feedback over PUSCH

A method in a base station for adaptively configuring semi-persistent Channel State Information, SP CSI, on a physical uplink shared channel, PUSCH, the method comprising:

• transmitting a configuring message to configure a user equipment with at least one SP CSI report configuration on the PUSCH, and the configuring message identifying a SP CSI reporting periodicity;
• transmitting physical layer control signaling identifying and activating the at least one SP CSI report configuration;
• and
• receiving a plurality of SP CSI reports, the reports being transmitted with the periodicity and according to the physical layer control signaling and the configuring message.

A user equipment for transmitting semi-persistent Channel State Information, SP CSI, on a physical uplink shared channel, PUSCH, the user equipment comprising:

• processing circuitry configured to:
• receive a configuring message for configuring the user equipment with at least one SP CSI report configuration on the PUSCH, the configuring message identifying a SP CSI reporting periodicity;
• receive physical layer control signaling for identifying and activating the at least one SP CSI report configuration;
• and
• transmit a plurality of SP CSI reports, the reports being transmitted with the SP CSI reporting periodicity and according to the physical layer control signaling and the configuring message.