The transmitting of the determined actual or improved maximum sensitivity degradation from the user equipment may be by a capability transfer signaling the actual or improved maximum sensitivity degradation required for the at least one of the plurality of multi-connectivity frequency bands. The plurality of multi-connectivity frequency bands may be each of a plurality of E-UTRA-NR Dual Connectivity or Long Term Evolution/New Radio Carrier Aggregation/Dual Connectivity (LTE/NR CA/DC) configurations. The transmitting of the determined actual or improved maximum sensitivity degradation from the user equipment may indicate one allowed in a maximum sensitivity degradation table. The transmitting of the determined actual or improved maximum sensitivity degradation from the user equipment may indicate no actual or improved maximum sensitivity degradation. The transmitting of the determined actual or improved maximum sensitivity degradation may be in a signaling radio bearer for radio resource control configuration or reconfiguration. The signaling radio bearer may be SRB3. The transmitting of the determined actual or improved maximum sensitivity degradation from the user equipment may comprise measurement reporting of the determined actual or improved maximum sensitivity degradation from the user equipment with cross band transmit-to-receive degradation. The method may further comprise measuring a Signal-To-Interference-Plus-Noise Ratio in a downlink receive signal when simultaneous transmission on an uplink(s) is present. The transmitting of the determined actual or improved maximum sensitivity degradation from the user equipment may be in response to an explicit request from a network. The transmitting of the determined actual or improved maximum sensitivity degradation from the user equipment may be autonomously reported by the user equipment without an explicit request from a network. The method may further comprise receiving by the user equipment from a network a new defined bandwidth combination set which is linked with the determined improved maximum sensitivity degradation. This may be used with a new BCS table defined in 3GPP standards to be linked with the improved capability (e.g. 3 dB to 1 dB MSD in new BCS), but not actual MSD performances (e.g. UE can actually meet 0.5 dB MSD) ‘with the determined improved’. The method may further comprise the user equipment informing the network which bandwidth combination set(s) the user equipment supports.