Research on 5G Voice Solutions and Continuity Analysis

Voice has always been the most basic and primitive communication requirement of users. There are currently two 5G network voice solutions, EPS Fallback and VoNR. Since it is still in the early stage of 5G network construction, the coverage of 5G base stations and the penetration rate of 5G terminals are not high, so EPS Fallback is a transitional solution on the road to 5G voice evolution. With the gradual evolution and maturity of 5G SA networks, VoNR will be the main solution for 5G voice. This paper introduces two solutions for 5G voice services, studies the voice continuity for 5G SA architecture, and conducts an in-depth analysis of the scenarios in which VoNR voice services are handover to VoLTe based on field tests.