Type ii csi reporting for cjt with angle and delay reciprocity

A method performed by a User Equipment (UE), the method comprising the following steps:

• receiving, from a network node, information for a Channel State Information (CSI) reporting configuration that configures the UE with:
• multiple Non-Zero Power (NZP) CSI Reference Signal (CSI-RS) resources for channel measurement associated with the CSI reporting configuration, where each of the multiple NZP CSI-RS resources is associated with a different Transmission Configuration Indicator (TCI) state or unified TCI state;
• and
• a parameter combination indicating at least a total number of Frequency Domain (FD) basis vectors to be selected across the multiple NZP CSI-RS resources or a plurality of sets of CSI-RS ports;
• performing channel measurement on:
• the configured multiple NZP CSI-RS resources according to the respective TCI state or unified TCI state;
• receiving, from the network node, information that configures the UE with one or more FD basis vector windows that are over all configured NZP CSI-RS resources, in the case of configuration of multiple NZP CSI-RS resources for channel measurement;
• receiving, from the network node, information that configures the UE with a number of FD basis vectors to be selected, where the number of FD basis vectors to be selected is common to all configured NZP CSI-RS resources, in the case of configuration of multiple NZP CSI-RS resources for channel measurement;
• computing CSI based on the channel measurements and in accordance with the received information that configures the UE with the one or more frequency domain basis vector windows and the information that configures the UE with the number of FD basis vectors to be selected;
• and
• reporting the computed CSI.

A User Equipment (UE) comprising

• one or more transmitters;
• one or more receivers;
• and
• processing circuitry associated with the one or more transmitters and the one or more receivers, the processing circuitry configured to cause the UE to perform one or more of the following:
• receiving, from a network node, information for a Channel State Information (CSI) reporting configuration that configures the UE with:
• multiple Non-Zero Power (NZP) CSI Reference Signal (CSI-RS) resources for channel measurement associated with a CSI reporting configuration, where each of the multiple NZP CSI-RS resources is associated with a different Transmission Configuration Indicator (TCI) state or unified TCI state;
• and
• a parameter combination indicating at least a total number of Frequency Domain (FD) basis vectors to be selected across the multiple NZP CSI-RS resources or a plurality of sets of CSI-RS ports;
• performing channel measurement on:
• the configured multiple NZP CSI-RS resources according to the respective TCI state or unified TCI state;
• receiving, from the network node, information that configures the UE with one or more FD basis vector windows that are over all configured NZP CSI-RS resources, in the case of configuration of multiple NZP CSI-RS resources for channel measurement;
• receiving, from the network node, information that configures the UE with a number of FD basis vectors to be selected, where the number of FD basis vectors to be selected is common to all configured NZP CSI-RS resources, in the case of configuration of multiple NZP CSI-RS resources for channel measurement;
• computing CSI based on the channel measurements and in accordance with the received information that configures the UE with the one or more FD basis vector windows and the information that configures the UE with the number of FD basis vectors to be selected;
• and
• reporting the computed CSI.

A method performed by a network node, the method comprising one or more of the following steps:

• transmitting, to a User Equipment (UE), information that configures the UE with:
• multiple Non-Zero Power (NZP) Channel State Information (CSI) Reference Signal (CSI-RS) resources for channel measurement associated with a CSI reporting configuration, where each of the multiple NZP CSI-RS resources is associated with a different Transmission Configuration Indicator (TCI) state or unified TCI state;
• transmitting, to the UE, information that configures the UE with one or more Frequency Domain (FD) basis vector windows that are:
• over all configured NZP CSI-RS resources, in the case of configuration of multiple NZP CSI-RS resources for channel measurement;
• transmitting, to the UE, information that configures the UE with a number of FD basis vectors to be selected, where the number of FD basis vectors to be selected is:
• common to all configured NZP CSI-RS resources, in the case of configuration of multiple NZP CSI-RS resources for channel measurement;
• and
• receiving, from the UE, CSI in accordance with the transmitted information that configures the UE with the one or more FD basis vector windows and the transmitted information that configures the UE with the number of FD basis vectors to be selected.