 the advantage of wideband trans- mission in high-frequency bands in terms of RF configuration, the higher frequencies result in larger power losses at the connectors and cables; increased path loss and reduced cover- age due to lower power density over wider channels. Therefore, higher antenna gains are necessary to compensate for the losses and to maintain a certain link budget and coverage. Since it would be more difficult to design and implement RF signal transceivers and anten- nas with high density in FR2, if conventional RF configuration with connectors is used, BS type 2-O RF configuration without connectors is defined for FR2 operation. The BS Type 2-O would allow implementation of beamforming over wide channel bandwidths to main- tain coverage and to achieve high spectral efficiencies [29]. The RF performance requirements for BS types 1-C and 1-H are based on LTE-advanced specifications [11], when NR radio parameters are applied. However, BS types 1-O and 2-O have integrated radio transceivers and antennas with no connectors to conduct measure- ments; thus OTA specifications have been extended such that in the overall RF performance specifications, a reference point in the radiated space, referred to RIB, can be defined. The output power for various BS classes and types is shown in Table 5.3. It must be noted that the factor 10 log(NTxU-counted) is used to derive the rated carrier output power from output power per TAB connector for BS Type 1-H and no upper limits for output power has been specified for BS Type 2-O in 3GPP Rel-15. In addition to the equivalent isotropic radiated power (EIRP) and the equivalent isotropic sensitivity (EIS) including the antenna characteristics in the beam direction, which were specified in 3GPP Rel-13 LTE, the total radiated power (TRP) is introduced as a new metric in NR RF specifications (Fig. 5.7). The TRP definition makes it possible to specify OTA requirements for power-related RF performance requirements such as the BS output power and spurious emissions. Fig. 5.7 i