Since the 2011 Tōhoku earthquake and tsunami in Japan, NTT has stepped up research on new wireless systems to aid in disaster recovery. Some of its progress is shared in several articles in the January 2018 issue of the NTT Technical Review.
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Using wireless to restore communications after a disaster
Monday, January 29th, 2018NTT’s overview of 5G radio standardization
Tuesday, March 14th, 2017NTT DOCOMO researchers discuss 3GPP’s 5G radio standardization process in the March 2017 issue of NTT Technical Review.
It explains the phasing of 5G radio development. Phase 2 is the end of the current concentration of activity due for completion in late 2019. That specification is intended to meet ITU’s IMT-2020 performance requirements. Phase 1 is for early commercial deployment. Before Phase 1 is done a third mode (called non-standalone, which is explained) will be culled for even earlier commercial deployment. (They also refer to Phase 1 and Phase 2 as 5G and 5G+, respectively.)