[Research] A paper from Prof. Jinkyu Lee’s Lab. (RTCL@SKKU) accepted in ACM Mobisys 2023
- 소프트웨어융합대학
- Hit1073
- 2023-06-07
A paper from RTCL@SKKU (Advisor: Jinkyu Lee) has been accepted in ACM Mobisys 2023.
ACM Mobisys is the premier conference in mobile systems, in which around 40 papers are usually published every year. In this year, ACM Mobisys 2023 will be held in Helsinki, Finland.
ACM Mobisys 2023 website: https://www.sigmobile.org/mobisys/2023/
RTCL@SKKU website: https://rtclskku.github.io/website/
- (Paper Title) MixMax: Leveraging Heterogeneous Batteries to Alleviate Low Battery Experience for Mobile Users
- (Authors in RTCL@SKKU) Jaeheon Kwak (M.S. alumni, the first author), Prof. Jinkyu Lee (the co-corresponding author)
- (Teaser) https://youtu.be/LPXcpKlQxa0
- (Abstract) Despite the physical advance of an existing single-cell battery system, mobile users are still suffering from low battery anxiety. With a careful analysis of users’ battery usage behavior collected for 19,855 hours, we propose a heterogeneous battery system, MixMax, consisting of three complementary battery types tailored to minimizing the low battery time. While composing a heterogeneous battery system opens up a chance to simultaneously improve the capacity and the charging speed, one must face non-trivial challenges to determine the ratio of enclosed batteries and charge/discharge policies during the run-time. They are highly dependent on each other, which entails almost infinite candidates for the choice. MixMax gracefully unwinds the dependencies as it formulates the decision-making problem into an optimization problem and decomposes it into multiple sub-problems instead. To evaluate MixMax, we fabricate coin-cell batteries and experiment with them to model an accurate battery emulator which sophisticatedly reproduces the dynamics of battery systems. Our experimental results demonstrate that MixMax can reduce the low battery time by up to 24.6% without compromising capacity, volume, weight, and more importantly, users’ battery usage behavior. In addition, we prototype MixMax on a smartphone, presenting the practicality of MixMax on mobile systems.
Jinkyu Lee | jinkyu.lee@skku.edu | RTCL@SKKU | https://rtclskku.github.io/website/