Enhanced Paging Monitoring for 5G and Beyond 5G Networks

Abstract

User experience, characterized by not only data rate and latency but also power consumption, is one of the major drivers for the success of 5G and Beyond-5G (B5G) networks. User Equipment (UE) power saving enhancements are at the forefront of ongoing discussions in 3GPP for next generation radio standards. Idle mode Discontinuous Reception (IDRX) is an important mechanism for UE’s power saving. However, IDRX in 5G/B5G networks is more challenging than in legacy networks. UE is required to measure Synchronization Signal Block(s) (SSBs) for Physical Downlink Shared Channel (PDSCH) and Physical Downlink Common Control Channel (PDCCH) reception in every paging occasion (PO) of IDRX cycle in 5G/B5G networks. Furthermore, PDSCH decoding is very sensitive to the time-frequency synchronization error and requires multiple SSB measurements before every PO. In this paper we present an Enhanced Paging Monitoring (EPM) for reducing the impediments on IDRX in 5G/B5G due to SSB measurements and related overheads. We also extend our EPM proposal by incorporating paging early indication. The proposed EPM can manifest up to 37% more power saving compared to existing system while considering multiple SSB measurements that are essential to 5G/B5G networks.