Channel state feedback method and apparatus

An apparatus, comprising one or more processors and one or more communications units,

• wherein the one or more communications units are configured to support communication between the apparatus and another device, and the one or more processors are configured to:
• receive M groups of channel state information (CSI) configuration information from a network device, wherein M is an integer greater than or equal to 1, the M groups of CSI configuration information comprise CSI configuration information corresponding to a serving cell of user equipment, or the M groups of CSI configuration information do not comprise CSI configuration information corresponding to a serving cell of user equipment;
• and
• feed back, based on the M groups of CSI configuration information, N groups of CSI in M groups of CSI corresponding to the M groups of CSI configuration information;
• wherein
• when the M groups of CSI configuration information comprise the CSI configuration information corresponding to the serving cell of the user equipment, N is an integer greater than or equal to 0 but not greater than M;
• or
• when the M groups of CSI configuration information do not comprise the CSI configuration information corresponding to the serving cell of the user equipment, the N groups of CSI do not comprise CSI corresponding to the CSI configuration information of the serving cell, and N is an integer greater than or equal to 0 but not greater than M.