The Role of 4G in Making 5G "Deployment" a Commerical Reality
The development of 5G standards is steaming ahead with its commercial deployment anticipated in 2019, but what will be deployed and its extent remains anything but clear. Nevertheless, what remains clear is the critical role that LTE will play in realising 5G first-to-market for a handful of operators across the world. LTE-A Pro will be submitted with 5G NR to meet IMT-2020 requirements (ITU Recommendation ITU-R M.2083-0, September 2015).
4G-5G Parallel Standards Development
4G was developed with absolutely no relationship with 3G resulting in each requiring more or less two separate end-to-end networks. 5G deployment, on the other hand, relies heavily on 4G (5G will initially use EPC - non-stand alone radio). In addition, two of the three top-level use cases of 5G – Enhanced Mobile Broadband, and Massive Machine Communication - have been/are being addressed by the 3GPP LTE Release 13 and beyond.