Performance enhancement of DRX sleep mode based on signaling/paging traffic arrival in 5G communication systems

Meeting the demands for faster data rates and minimized latency, one of the significant difficulties facing Millimeter Wave (mmWave) 5 G wireless communication technology is energy consumption. As a result, the battery of the User Equipment (UE) experiences energy absorption. Discontinuous Reception (DRX) sleep mode is activated in the absence of incoming traffic at the Base Station (BS) to prolong the UE battery life and investigate a green communication. To extend the lifespan of the UE battery, the paper presents an enhanced DRX sleep mode. This paper suggests using the DRX mechanism to simultaneously control latency, heat, and energy consumption. Data packets or paging messages are typically the types of traffic that arrive at the BS. Our proposal assesses two system models by considering traffic that enters the UE during its wake-up periods. The Signaling Based DRX is the first system model, and the Enhanced Paging Monitoring (EPM) is the second system model. Both system models rely on the Power Saving Indicator (PSI) and Paging Early Indicator (PEI) as their primary indicators. When compared to the conventional method, these indicators improve power savings, delay, and steady temperature. However, the paper studies different traffic arrival types. The performance assessment of both models involves measuring the power saving factor, average delay and steady temperature of the UE under a uniform rate of data and paging traffic arrivals. The system model and numerical analysis are validated through a MATLAB simulation program. Analytical and computational results are obtained. Power saving factor is increased up to 97 %, average delay is reduced down to 0.1 µsec and steady temperature is reduced to match the normal room temperature of about 27 º C. At the end of this study, the obtained analytical results are compared with some real world measurements related to various international vendors in order to assess relevance and significance. Moreover, impact of the proposal on the maximum throughput is discussed with existence of Line Of Sight (LOS) and None Line Of Sight (NLOS) path loss models appropriate in 5 G communication.