components were almost fixed and scheduling algo- rithms were mainly related with the resource allocation between users. The relationship between MAC layer and waveform was limited. However, 5G systems use flexible lattice and pulse shape for OFDM waveform. Hence, frame structures are more flexible than the previous generations. This flexibility increases the importance of scheduling mechanisms at the MAC layer. Waveform parameter assignment is one of the key topics that are related with the scheduling mechanisms. Standards give freedom to vendors for scheduling related system designs. At that point, analysis of the necessary amount of flexibility and complexity in scheduling mechanisms of 5G is an important, promising research area. Additionally, the role of ML will increase in the next generation cellular networks especially if there are more waveform parame- ter options. Moreover, the future communications systems can use multi-waveform and multi-numerology structures together in the same frame. There may be different parame- ter options for different waveforms. Hence, the number of total waveform-related parameter options will be numerous. As can be seen, waveform parameter assignment will be one of the most important topics for scheduling and resource allocation in communications sys- items. References 1 Lin, X., Li, J., Baldemair, R. et al. (2018). 5G new radio: unveiling the essentials of the next generation wireless access technology. 2 Ghosh, A., Maeder, A., Baker, M., and Chandramouli, D. (2019). 5G evolution: a view on 5G cellular technology beyond 3GPP release 15. IEEE Access 7: 127639-127651. doi: https://doi.org/10.1109/ACCESS.2019.2939938. 3 Yazar, A. and Arslan, H. (2018). A flexibility metric and optimization meth- ods for mixed numerologies in 5G and beyond. IEEE Access 6: 3755-3764. doi: https://doi.org/10.1109/ACCESS.2018.2795752 4 Imran, A., Zoha, A., and Abu-Dayya, A. (2014). Challenges in 5G: how to empower son with big data for enabling 5G. IEEE Network 28 (6): 27-33. doi: https://doi.org/