5G New Radio User Equipment Power Modeling and Potential Energy Savings

Abstract

Currently the 3rd generation partnership project (3GPP) is studying how user equipment power saving can be improved for the fifth generation New Radio technology. To accomplish this objective, a power model has been developed for evaluation of power saving schemes related to Radio Resource Management in Radio Resource Control (RRC) Connected mode among other topics. In this work, we examine the power saving potential in RRC Connected mode using a single-user numerical simulation tool employing the user equipment power model. We demonstrate that the use of short Discontinuous Reception (DRX) can provide 26 % energy saving and 74 % latency reduction as compared to the long DRX-only baseline. Furthermore, the simulation results, based on the user equipment power model, show that four Physical Downlink Control Channel (PDCCH) optimization monitoring schemes: cross-slot scheduling, reduced blind PDCCH decoding candidate set, wake-up signaling and go-to-sleep signaling, may further reduce the energy consumption 17-20 % at the cost of a latency increase and potentially lower overall network performance.