NTT Docomo of Japan and SK Telecom of South Korea are always in the forefront of next generation mobile network developments, and both have announced new breakthroughs on the road to 5G. Docomo has been talking about its contribution to the 5G waveform debate. While the initial releases of the standards – focused mainly, and conventionally, on sub-6 GHz spectrum and mobile broadband use cases – will continue to use OFDM, other waveforms are expected to be adopted in Release 16 and beyond, to support millimeter wave spectrum more efficiently, and to be better optimized for functions like ultra-low latency. Some companies, from start-ups like Cohere to majors like Huawei, have been disappointed by the relatively conservative approach in Release…