Draft air interface harmonization and user plane design

This deliverable will contain the draft air interface harmonization and user plane design considerations. Most importantly, this will contain a first recommendation on which and how many novel air interface variants are expected to be introduced in the 5G context, which forms of air interface aggregation and user plane provisioning are foreseen for 5G, and on which protocol level novel air interfaces should ideally be integrated among each other and with legacy technologies. This deliverable will be a crucial input to e.g. D 2.2, due in month 12, and an essential prerequisite to achieve milestone 2 “Key 5G RAN design questions clarified”.