公开(公告)号：US11096123B2

公开(公告)日：2021-08-17

申请号：US16673229

申请日：2019-11-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Mayank Kailash Agrawal ,  Satya Kumar Vankayala ,  Fasil Abdul Latheef ,  V V N K Someswara Rao Koduri ,  Uma Kishore Satya Venkata Godavarti

IPC: H04W52/02 ,  H04L1/18 ,  H04B17/309 ,  H04W76/28 ,  H04W24/08

Abstract: Disclosed is a method and system to reduce user equipment (UE) battery consumption and efficiently utilize uplink hybrid automatic repeat request (HARQ) memory, including sending uplink data to a base station and saving a backup copy of the uplink data in an uplink HARQ buffer, receiving an acknowledgement from the base station indicating that the uplink data has been received, measuring a HARQ retransmission time required to retransmit the uplink data to the base station after receiving the acknowledgement, comparing the measured HARQ retransmission time to a remaining discontinuous reception cycle, and removing the uplink data from the uplink HARQ buffer after expiration of an inactivity timer and switching the UE to a sleep mode based on the comparison.