Jussif J. Abularach Arnez, Wederson Medeiros Silva, Renata K. Gomes Do Reis, Leandro Almeida Da Silva, Maria G. Lima Damasceno
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SDR 5G NSA Mobile Network and an IMS Core to provide Voice Over IP LTE service
The purpose of this work was to assess a real-time testbed scenario using the Software Defined Radio (SDR) technology and the USRP (Universal Software Radio Peripheral) device to provide Voice-over-LTE (VoLTE) call service and grant user internet connectivity in an initial 5G NSA (Non Stand Alone) deployment network. The implemented mobile network considers a 5G mobile network that is composed of both NSA 5G and IMS (IP Multimedia Subsystem) architectures cores. The deployment network considers a soft initial transition from 4G to 5G NSA. In addition, the contribution of this article is to achieve that each element from different architectures is able to communicate to each other and establish the bearer and stream for each IP service. Furthermore, the evaluation of jitter, throughput and RTT delay metrics are presented for a VoLTE call between two devices connected to the deployment SDR 5G NSA network.
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