Referring also to FIG. 5, one example is shown in regard to signaling between the user equipment (UE) 110 and one or more components of the network 100. In this example implementation, the UE 110 may be configured to indicate to the network 100 via measurement reporting 210, such as MeasurementReport, that the actual MSD occurred with cross band transmit-to-receiver degradation. This may be done, for example, by measuring the resulting SINR in the downlink receive signal when simultaneous transmission on the uplink is present. In example embodiments, the measurement reporting may be explicitly requested by the network 100, or the measurement reporting may be autonomously reported by the UE 110 as part of normal measurement reporting for example.

In one implementation a new Bandwidth Combination Set (BCS) could be defined in the 3GPP standard for the improved MSD performances, then the UE can signal which BCS (old, or new, or both) the UE can support (for example via UE capacity signaling), and the improved MSD may be linked to that particular new BCS support. The UE 110 may inform the network 100 which BCS(s) the UE supports and, in the case where the UE indicated the new BCS with improved MSD, the network can take this improved performance into consideration. Also, in the case where the UE indicates support for improved MSD BCS and other BCS(s) that do not have improved MSD, the network 100 knows that UE 110 has a better filter implemented and the MSD is expected to be better or non-existent for all BCS. This method does not need modification to existing signaling because the BCS signaling is used for both LTE and NR carrier aggregation.