The key performance indicators (KPIs) have to a large extent stayed the same in different network generations starting from 1G to 5G and now 6G, with progression of each generation the minimum requirements have sharpen.
The energy efficiency KPIs is an exception , which was first introduced in 5G, but without specifying concrete targets.
It is believed that 6G will mainly contain the same KPIs as previous generations but with greatly higher ambitions. However, while the KPIs were mostly independent in 5G (but less stringent at high mobility and over large coverage areas), a cross-relationship is desirable in 6G through a definitions of groups. All the indicators in a group should be fulled at the same time, but different groups can have diverse requirements.
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