Sirait, Fadli, Akhmad Wahyu Dani, Yuliza Yuliza, and Ulil Albab. 2019. “OPTIMIZATION IN QUALITY OF SERVICE FOR LTE NETWORK USING BANDWIDTH EXPANSION”. SINERGI 23 (1). Jakarta, Indonesia:47-54. https://doi.org/10.22441/sinergi.2019.1.007.