What is maximum power reduction in LTE?

Question

If UE is configured with Dual connectivity i.e LTE + NR, Then UE has two option to apply UL power which Pmax of LTE and Pmax of NR. How does UE select which max power to apply for both the cell.

Answer 1

Maximum Power Reduction -that applies for UE power class 3 depending on the modulation being used and the number of Resource Blocks (RB) transmitted in each channel bandwidth.
MPR specifies the allowed decrease in the maximum power transmitted in order to enable the device to pass transmitter adjacent channel leakage ratio (ACLR) requirements. As per 3GPP specs, MPR specifications defines the maximum power reduction that is allowable in order to meet the LTE standard’s transmitter ACLR requirements.
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