For non-codebook based UL MIMO scheme, the maximum number of MIMO layers would be limited to per serving cell only. The UE determines its PUSCH precoder and transmission rank based on the SRI indicated by the SRS resource indicator in DCI or the SRI is given by srs-ResourceIndicator for configured grant when multiple SRS resources are configured. Only one SRS port for each SRS resource is configured. Only one SRS resource set can be configured with higher layer parameter usage in SRS-ResourceSet set to 'nonCodebook'. The maximum number of SRS resources that can be configured for non-codebook based uplink transmission is 4. The SRS resource set used to determine the SRI is configured per BWP in [3] as follows,