Optimal Information Update for Energy Harvesting Sensor with Reliable Backup Energy
The timely delivery of status information collected from sensors is critical in many real-time applications, e.g., monitoring and control. In this paper, we consider a scenario where a wireless sensor sends updates to the destination over an erasure channel with the supply of harvested energy and re...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-07-01
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| Series: | Entropy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1099-4300/24/7/961 |
| _version_ | 1827597212547284992 |
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| author | Lixin Wang Fuzhou Peng Xiang Chen Shidong Zhou |
| author_facet | Lixin Wang Fuzhou Peng Xiang Chen Shidong Zhou |
| author_sort | Lixin Wang |
| collection | DOAJ |
| description | The timely delivery of status information collected from sensors is critical in many real-time applications, e.g., monitoring and control. In this paper, we consider a scenario where a wireless sensor sends updates to the destination over an erasure channel with the supply of harvested energy and reliable backup energy. We adopt the metric age of information (AoI) to measure the timeliness of the received updates at the destination. We aim to find the optimal information updating policy that minimizes the time-average weighted sum of the AoI and the reliable backup energy cost. First, when all the environmental statistics are assumed to be known, the optimal information updating policy exists and is proved to have a threshold structure. Based on this special structure, an algorithm for efficiently computing the optimal policy is proposed. Then, for the unknown environment, a learning-based algorithm is employed to find a near-optimal policy. The simulation results verify the correctness of the theoretical derivation and the effectiveness of the proposed method. |
| first_indexed | 2024-03-09T03:27:02Z |
| format | Article |
| id | doaj.art-0ab31b60c4554aa9a68d4fa615c910b4 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-09T03:27:02Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-0ab31b60c4554aa9a68d4fa615c910b42023-12-03T15:00:35ZengMDPI AGEntropy1099-43002022-07-0124796110.3390/e24070961Optimal Information Update for Energy Harvesting Sensor with Reliable Backup EnergyLixin Wang0Fuzhou Peng1Xiang Chen2Shidong Zhou3Department of Electronic Engineering, Tsinghua University, Beijing 100084, ChinaSchool of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510006, ChinaSchool of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510006, ChinaDepartment of Electronic Engineering, Tsinghua University, Beijing 100084, ChinaThe timely delivery of status information collected from sensors is critical in many real-time applications, e.g., monitoring and control. In this paper, we consider a scenario where a wireless sensor sends updates to the destination over an erasure channel with the supply of harvested energy and reliable backup energy. We adopt the metric age of information (AoI) to measure the timeliness of the received updates at the destination. We aim to find the optimal information updating policy that minimizes the time-average weighted sum of the AoI and the reliable backup energy cost. First, when all the environmental statistics are assumed to be known, the optimal information updating policy exists and is proved to have a threshold structure. Based on this special structure, an algorithm for efficiently computing the optimal policy is proposed. Then, for the unknown environment, a learning-based algorithm is employed to find a near-optimal policy. The simulation results verify the correctness of the theoretical derivation and the effectiveness of the proposed method.https://www.mdpi.com/1099-4300/24/7/961age of informationinformation updateenergy harvestingreliable backup energy |
| spellingShingle | Lixin Wang Fuzhou Peng Xiang Chen Shidong Zhou Optimal Information Update for Energy Harvesting Sensor with Reliable Backup Energy Entropy age of information information update energy harvesting reliable backup energy |
| title | Optimal Information Update for Energy Harvesting Sensor with Reliable Backup Energy |
| title_full | Optimal Information Update for Energy Harvesting Sensor with Reliable Backup Energy |
| title_fullStr | Optimal Information Update for Energy Harvesting Sensor with Reliable Backup Energy |
| title_full_unstemmed | Optimal Information Update for Energy Harvesting Sensor with Reliable Backup Energy |
| title_short | Optimal Information Update for Energy Harvesting Sensor with Reliable Backup Energy |
| title_sort | optimal information update for energy harvesting sensor with reliable backup energy |
| topic | age of information information update energy harvesting reliable backup energy |
| url | https://www.mdpi.com/1099-4300/24/7/961 |
| work_keys_str_mv | AT lixinwang optimalinformationupdateforenergyharvestingsensorwithreliablebackupenergy AT fuzhoupeng optimalinformationupdateforenergyharvestingsensorwithreliablebackupenergy AT xiangchen optimalinformationupdateforenergyharvestingsensorwithreliablebackupenergy AT shidongzhou optimalinformationupdateforenergyharvestingsensorwithreliablebackupenergy |