5G is developing so fast it’s hard to get a handle on it, whether you’re responsible for building 5G systems or writing about them.
Part of the problem is that 5G is not one proposed standard, it’s a growing set of them.
Every new proposal of this sort complicates the ability of standards bodies to keep up. The original timeline was to have a specification ratified by 2020, but the schedule for final ratification is now in question.
Meanwhile, several wireless network operators are hurrying the market. Telcos in South Korea and Japan want to demonstrate 5G networks during the 2018 Winter Olympics in Korea and the 2020 Summer Olympics in Japan.