Low overhead channel state information (CSI) feedback for multi-transmission point (TRP) transmission

A method implemented in a network node, the method comprising:

• configuring a wireless device with a channel state information, CSI, report setting for at least K>1 non-zero power channel state information reference signal, NZP CSI-RS, resources for channel measurement and a report quantity configuration, K being an integer;
• sending a CSI feedback report request for CSI measurement and feedback based at least in part on the CSI report setting;
• and
• receiving a channel state information, CSI, feedback report, the CSI feedback report based at least in part on the CSI report setting;
• and
• the CSI feedback report comprising a first CSI feedback and a second CSI feedback.

A wireless device configured to communicate with a network node, the wireless device comprising processing circuitry configured to cause the wireless device to:

• receive a configuration of a channel state information, CSI, report setting for at least K>1 non-zero power channel state information reference signal, NZP CSI-RS, resources for channel measurement and a report quantity configuration, K being an integer;
• receive a CSI feedback report request for CSI measurement and feedback based at least in part on the CSI report setting;
• measure channels based at least in part on the NZP CSI-RS resources;
• and
• send a channel state information, CSI, feedback report based at least in part on:
• the channel measurements;
• and
• the report quantity configuration;
• and
• the CSI feedback report comprising a first CSI feedback and a second CSI feedback.