Method for adjusting transmitting power ratio of radio module and associated radio system

A method for adjusting a transmitting (TX) power ratio of a radio module, comprising:

• separating multiple radio modules into multiple radio groups according to a radiofrequency (RF) regulation, wherein the multiple radio modules comprise the radio module;
• mapping an RF exposure limit to a TX power limit;
• interacting with at least one other radio module for adjusting the TX power ratio, to obtain at least one adjusted TX power ratio, wherein the multiple radio modules comprise the at least one other radio module, and the radio module and the at least one other radio module are comprised in a same radio group of the multiple radio groups;
• and
• adjusting the TX power limit according to the at least one adjusted TX power ratio, to generate an adjusted TX power limit of the radio module.