TY - JOUR AU - Antonioli, Roberto Pinto AU - Parente, Gabriela Costa AU - Silva, Carlos Filipe Moreira e AU - Sousa, Diego Aguiar AU - Rodrigues, Emanuel Bezerra AU - Maciel, Tarcisio Ferreira AU - Cavalcanti, Francisco Rodrigo Porto PY - 2018/08/23 Y2 - 2024/03/29 TI - Dual Connectivity for LTE-NR Cellular Networks: Challenges and Open Issues JF - Journal of Communication and Information Systems JA - Journal of Communication and Information Systems VL - 33 IS - 1 SE - Tutorial Papers DO - 10.14209/jcis.2018.28 UR - https://jcis.sbrt.org.br/jcis/article/view/575 SP - AB - <p>The Dual Connectivity (DC) technology has gained a lot of momentum in the LTE Release 12 as a means to enhance the per-user throughput and provide mobility robustness. Some studies in the literature have discussed the interworking between the LTE and the air interface of the upcoming Fifth Generation (5G) in a DC scenario. That integration may provide some benefits to meet the high throughput, reliability and availability requirements of the 5G networks. This work firstly presents a brief overview of the DC technology considering the integration between 4G e 5G. Then, we highlight some open issues and challenges for future investigation involving Radio Resource Management (RRM) in such a scenario, which includes: (i) user-cell association, (ii) interaction between base stations and (iii) resource allocation. After that, we propose an extension of a utility-based resource allocation algorithm for DC scenarios. Finally, a performance evaluation is conducted in multi-Radio Access Technology (RAT) LTE-NR scenarios considering the bearer split configuration of the DC technology, where the gains provided by the proposed algorithm are demonstrated.</p> ER -