5G brings a variety of new aspects that also influence network planning. This chapter describes some of the key points for 5G network design compared to the previous generations. It looks at Phase 2 radio network planning aspects, including the radio link budget of all known 5G Phase 1 and Phase 2 frequency bands. A skillful radio engineer who knows by heart the theories and practices of radio propagation, network planning, optimization, and measurement techniques is one of the most invaluable assets of an Mobile Network Operator (MNO) or cooperating party planning 5G networks. The 5G transport network may contain fronthaul, midhaul, and backhaul networks. Network slicing is one of the key features of fully functional and optimized 5G. In addition to measurements during the setup of the 5G network, one of the essential tasks of MNOs is to measure periodically the network performance in the operational phase.