An Efficient 5G Redirection Scheme Interworking with Legacy Networks

Recently, it has been actively conducted to study Network technology based on eMBB, URLLC, mMTC for 5G commercial. Compared to 4G Network, 5G is leading the sensational dissemination and spread of 5G devices, IoT and network infrastructure with outstanding performance differences such as data transmission speed, communication delay time, and connectivity of devices. However, there is a need for a method to select proper radio access technology(RAT) interworking with the legacy network infrastructure (4G/3G/2G) due to the narrow coverage of 5G. There is a need for a way to improve communication service satisfaction through infrastructure and proper and efficient use. In this paper, we propose a method to support efficient mobility of mobile devices for interworking between 5G mobile networks and existing mobile networks (4G/3G/2G), and scenarios for efficiently operating 5G networks and existing networks of global mobile network operators.