Causes and fixes of unexpected phone shutoffs
Causes and fixes of unexpected phone shutoffs
复制标题
手机意外关机的原因及解决方法
DOI:
10.1145/3386901.3389024
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Shin, Kang G.
中科院分区:
文献类型:
--
作者:
Lee, Youngmoon;He, Liang;Shin, Kang G.
Many users have reported that their smartphones shut off unexpectedly, even when they show >30% remaining battery capacity. After examining the problem from both the user and phone sides, we discovered the cause of these unexpected shutoffs to be a large and dynamic internal voltage drop of the phone battery, which is, in turn, caused by the dynamics of both battery's internal resistance and the phone's discharge current. To fix these unexpected shutoffs, we design a novelBattery-aware Power Management(BPM) middleware that accounts for these dual-dynamics in phone operation. Specifically, BPM profiles the battery's internal resistance --- which varies with battery state-of-charge (SoC), temperature, and aging --- using a novel duty-cycled charging method. BPM then regulates, at run-time, the phone's discharge current based on the constructed battery profile. We have implemented and evaluated BPM on 4 commodity smartphones from different OEMs with the latest battery firmware, demonstrating that BPM prevents unexpected phone shutoffs and extends their operation time by 1.16--2.03X. Our user study, which includes 121 mobile phone users, also corroborates BPM's usefulness/attractiveness.
登录
查看更多内容
DOI:
10.1145/2789168.2790103
发表时间:
2015-09
期刊:
Proceedings of the 21st Annual International Conference on Mobile Computing and Networking
影响因子:
--
作者:
D. H. Bui;Yunxin Liu;Hyosu Kim;I. Shin;Feng Zhao
通讯作者:
D. H. Bui;Yunxin Liu;Hyosu Kim;I. Shin;Feng Zhao
DOI:
10.1145/3302509.3313782
发表时间:
2019-04
期刊:
Proceedings of the 10th ACM/IEEE International Conference on Cyber-Physical Systems
影响因子:
--
作者:
Liang He;Youngmoon Lee;Eugene Kim;K. Shin
通讯作者:
Liang He;Youngmoon Lee;Eugene Kim;K. Shin
影响因子:
2.2
作者:
Minyong Kim;Young Geun Kim;S. Chung;C. Kim
通讯作者:
C. Kim
影响因子:
7.9
作者:
M. A. Hoque;M. Siekkinen;Jonghoe Koo;Sasu Tarkoma
通讯作者:
Sasu Tarkoma
DOI:
--
发表时间:
2018
期刊:
13th USENIX Symposium on Operating Systems Design and Implementation
影响因子:
--
作者:
Jindal, Abhilash;Hu, Y. Charlie
通讯作者:
Hu, Y. Charlie