Electronic device, communication method and storage medium in wireless communication system to make an optimum compromise between the accuracy of the channel state information and the overhead

An electronic device for a base station in a wireless communication system comprising:

• a processing circuitry configured to
• indicate a user equipment to report a first type of channel statement information (CSI), wherein the base station serves the user equipment in a way of single-user Multiple Input Multiple Output (SU-MIMO);
• determine that a second type of channel statement information is required in a case that the base station changes the way serving the user equipment from SU-MIMO to multi-user Multiple Input Multiple Output (MU-MIMO);
• and
• notify the user equipment to report the second type of channel statement information,
• wherein a granularity of the second type of channel statement information is higher than that of the first type of channel statement information.