of use cases ranges from 12 to 210 kbps for radio and Playstore download use cases, respectively (cf. Figure 16.42b). Total transmit power is on average 10 dB and between 20 and 24 dB higher than that of radio streaming when performing a Skype video call and a file upload, respectively. The impact on battery life is therefore greater for these use cases. Figure 16.45b shows that all PUCCH transmissions are independent of use cases and test conditions. Establishing Relationship Between RSRP and UE Power Consumption Section 16.8.2 concluded that Pcon con can be approximated as a function of PRxBB and TxRF: Yet, the example of Figure 16.42b indicates that the downlink average throughput experienced by UE4 spans from 570 kbps for radio streaming to a little more than 30 Mbps in the case of application download. Figure 16.41b shows that this range of throughput has very little impact LTE Small Cell Optimization on receiver baseband power consumption: UE4 consumes 865 and 872 mW, respectively, across this range, that is, a variation of less than 1%. We conclude that UE power consumption in this example can be approximated by using PTxRF only. By injecting the total transmit power trend lines of Figure 16.45 into the respective PTxRF transfer functions of each benchmarked smartphones, it becomes easier to illustrate the impact of small cells on the cellular subsystem power consumption. Figure 16.46 shows the set of curves obtained by using two trend lines: radio streaming and Skype video call. These graphs clearly indicate that deploying small cells is one technique to minimize power consumption. This is because the higher range of RSRP ensures the UE is operated in its lowest power consumption state. In the case of radio streaming (Figure 16.46a), this statement is clearly visible in the latest, state-of-the-art, power-optimized chipset solutions of UEs 3, 4 and 5 where power consumption at location B (small cell, cell edge) is only 2-3% higher than in location A. At location C, the sharp exponential slope of TxRF mean