1) The document introduces the concept of 5G mobile networks, which is envisioned as a user-centric network where the mobile user is the top priority.
2) 5G terminals are proposed to have software-defined radios that allow modulation schemes and error control protocols to be downloaded and changed on the fly. Terminals will be able to access and combine data flows from multiple wireless technologies simultaneously.
3) The document compares the characteristics of previous generations of mobile networks from 1G to 4G and outlines the proposed protocol stack and architecture for 5G terminals, including the open wireless architecture, IPv6-based network layer, and open transport protocol layer.