No one can predict unforeseen killer applications enabled by new wireless technologies (e.g., 5G network) beforehand. Looking back 20-year history of mobile wireless network, it has been very tough to prepare killer applications a prior to the emergence of new radio access technologies. NTT DOCOMO’s i-mode was not prepared for 2G always-on network., and invented after that. Smartphones with application markets became popular after the 3G network deployment, for which video conversation had been prepared a a killer service candidate and which didn’t make a success. 4G network brought us more capacity and low latency network, while youtube, hulu, Netflix, facebook messenger and others were natured by such a rich mobile communication environment with cloud platforms.
Everyone, nowadays, are talking about a buzz word “IoT” without having a solid idea for monetization. Such a bold discussion may mislead our radio access technology development to an unpromised land.
My recommendation is “Decide as late as possible, particularly for decisions that are irreversible.” According to software engineering terminology, it says also “late binding.” Don’t rush into a 10Gps broadband network nor a hyper low latency and 0% packet-loss assured network.
Having said that, the 5G beam forming radio technology (enabled by Massive MIMO) will bring a unique communication characteristics with a more reliable, higher capacity and 3D-positioning. My bet on 5G killer applications is “Night Golf” where you can play golf without seeing a ball which is being identified by the 5G radio. haha.