we take one of the fi rst steps to study voice solutions under several different 5G networking strategies with the highest level of industrial attention. We first introduce and compare the operating processes of these 5G networking strategies and analyze the necessary construction and adaption work for each of them.This leads to our proposed voice solutions customized for each networking strategy
including their working principles and the imposed requirements for the core networks as well as mobile terminals.We summarize with a comprehensive analysis of the voice continuity of each proposed voice solutions
before fi nally offering some strategical instructions on which voice solution to choose.