SOLUTIONS TO REFARM GSM-900 MHZ BAND FOR 5G NETWORK IN VIETNAM

Abstract

Nowadays, the broadband communication needs with multi-Gbps data rate play an important role in the development of science and technology in the period of digital transformation and industrial revolution 4.0 with technology trends such as IoT, Big Data, AI, … In order to meet these trends, the telecomunication industry in the world in general and of Vietnam in particular must develop 5th mobile technology, which is inevitable. Because frequency resources are gradually depleted, spectrum refarming is a cost-effective solution for mobile network operators to diversify their services deployed on the 5G platform without auctioning a new spectrum.

In this paper, we study theories and conduct empirical tests to propose solutions to refarm the GSM-900MHz band to reserve frequency resources for rolling out 5G network in the Massive IoT field in Vietnam. The results show that the quality of 2G coverage still ensures for using of voice services based on 2G network and resources cut can be used to deploy 5G serving Massive IoT applications after refarming the GSM 900MHz band.