Novel Wake-up Scheme for Energy-Efficient Low-Latency Mobile Devices in 5G Networks

TL;DR

This paper proposes a novel wake-up scheme for 5G mobile devices that balances energy efficiency and low latency, improving battery life and user experience compared to traditional DRX methods.

Contribution

It introduces a new wake-up approach that reduces energy consumption and latency, with detailed system design, signaling, and implementation analysis for 5G devices.

Findings

The scheme reduces energy consumption compared to DRX.

It achieves lower latency with minimal energy trade-offs.

Simulation results validate the effectiveness of the proposed method.

Abstract

Improved mobile device battery lifetime and latency mini-mization are critical requirements for enhancing the mobile broadband services and user experience. Long-term evolution (LTE) networks have adopted discontinuous reception (DRX) as the baseline solution for prolonged battery lifetime. However, in every DRX cycle, the mobile device baseband processing unit monitors and decodes the control signaling, and thus all instances without any actual data allocation leads to unnecessary energy consumption. This fact together with the long start-up and power-down times can prevent adopting frequent wake-up instants, which in turn leads to considerable latency. In this work,a novel wake-up scheme is described and studied, to tackle the trade-off between latency and battery lifetime in future 5G networks, seeking thus to facilitate an always-available experience, rather than always-on. Analytical and simulation-based results show that the proposed scheme is a promising approach to control the user plane latency and energy consumption, when the device is operating in the power saving mode. The aim of this article is to describe the overall wake-up system operating principle and the associated signaling methods,receiver processing solutions and essential implementation aspects. Additionally, the advantages compared to DRX-based systems are shown and demonstrated, through the analysis of the system energy-efficiency and latency characteristics, with special emphasis on future 5G-grade mobile devices