on LCRB and therefore the benefits of the inner allocation concept were not utilized. In particular, it enables CP-OFDM waveforms to be transmitted closer to the UE maximum output power. From a PA power consumption perspective, the UL SNR gains of CP-OFDM (cf. Chapter 5) are not sufficient to completely offset the dif- ference in MPR with DFT-S-OFDM at large outer RB allocations. However, with the inner allocation concept, CP-OFDM transmissions may benefit either from equal or lower power consumption than DFT-S-OFDM. The example in Figure 12.13 shows that a gain in PA power consumption up to 15% may be achieved using QPSK CP-OFDM VS. DFT-S-OFDM assuming a 1.6 dB SNR gain, a simplistic PA power efficiency model, and 4 dB post PA loss. 12.3.4.3 MPR for Almost Contiguous Allocations and PI/2 BPSK Power Boosting The basic MPR concept was enhanced already during Release 15 by introducing power boosting and MPR for almost contiguous allocations. Power boosting is a UE capa- bility, and if the UE supports it and the network allows it, the UE can increase the DFT-S-OFDM PI/2 BPSK modulation output power beyond nominal PC3 limits. The allowed increase in output power is 3 dB compared to the nominal PC3 output power of +23 dBm. UEs operated in power boost mode do not have to increase the output power by a full 3 dB; instead, it is sufficient if the output power increase is 2.8 dB for inner allocations, 1.8 dB for outer allocations, and 0 dB for edge allocations compared to a nominal PC3 output power of +23 dBm. Power boosting is not allowed for any other modulation than DFT-S-OFDM PI/2 BPSK, and it is initially limited to the TDD mode in bands n40, n41, n77, n78, and n79 under specific duty cycle constrains. Uplink transmissions that are DFT-S-OFDM modulated must always be contiguous, SO that all of the RBs are transmitted also in the middle of the allocation; this is due to the RAN1 physical layer specifications. However, CP-OFDM uplink transmissions can be fully non-contiguous according to RAN1, but the RAN4 basic MPR de