Data Freshness Optimization on Networked Intermittent Systems

Hao Jan Huang, Wen Sheng Lim, Chia Heng Tu, Chun Feng Wu, Yuan Hao Chang

研究成果: Conference contribution同行評審

1 引文 斯高帕斯(Scopus)

摘要

A networked intermittent system (NIS) is often deployed in the field for environmental monitoring, where sink nodes are responsible for relaying the data captured by sensors to a central system. To evaluate the quality of the captured monitoring data, Age of Information (AoI) is adopted to quantify the freshness of the data received by the central server. As the sink nodes are powered by ambient energy sources (e.g., solar and wind), the energy-efficient design of the sink nodes is crucial in order to improve the system-wide AoI. This work proposes the energy-efficient sink node design to save energy and extend system uptime. We devise an AoI-aware data forwarding algorithm based on the branch-and-bound (B&B) paradigm for deriving the optimal solution offline. In addition, an AoI-aware data forwarding algorithm is developed to approximate the optimal solution during runtime. The experimental results show that our solution can greatly improve the average data freshness for 148% against existing well-known strategies and achieves 91 % performance of the optimal solution. Compared with the state-of-the-art algorithm, our energy-efficient design can deliver better A3oI results by up to 9.6%.

原文English
主出版物標題2023 Design, Automation and Test in Europe Conference and Exhibition, DATE 2023 - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9783981926378
DOIs
出版狀態Published - 2023
事件2023 Design, Automation and Test in Europe Conference and Exhibition, DATE 2023 - Antwerp, Belgium
持續時間: 17 4月 202319 4月 2023

出版系列

名字Proceedings -Design, Automation and Test in Europe, DATE
2023-April
ISSN(列印)1530-1591

Conference

Conference2023 Design, Automation and Test in Europe Conference and Exhibition, DATE 2023
國家/地區Belgium
城市Antwerp
期間17/04/2319/04/23

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