Dianxin kexue (Apr 2021)

Power saving techniques for 5G RRC_Idle mode UE

  • Tuo YANG,
  • Lijie HU,
  • Fei WANG,
  • Jianjun LIU,
  • Nan HU,
  • Nan LI,
  • Zhenping HU

Journal volume & issue
Vol. 37
pp. 125 – 131

Abstract

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The power consumption of 5G UE is much serious than 4G UE due to larger bandwidth, massive MIMO, and higher data rate and has been one of the important reason affecting users’ experience of 5G network.3GPP has promoted the study and standardization of NR UE power saving techniques, which the R16 techniques is designed for RRC_connected mode and the started R17 techniques focus on RRC_idle mode.The power consumption of NR UE in RRC_idle was analyzed and compared with LTE UE.The power saving techniques to solve the power consumption in paging and tracking procedure were proposed and the power saving gain were also evaluated.The proposed techniques can reduce 5G UE power consumption and be applicable to future 5G commercial UE.

Keywords