OB-DETA: Observation-Based Directional Energy Transmission Algorithm in Energy Harvesting Networks
- Authors
- Ko, Haneul; Pack, Sangheon
- Issue Date
- 4월-2019
- Publisher
- KOREAN INST COMMUNICATIONS SCIENCES (K I C S)
- Keywords
- Directional antenna; energy harvesting; partially observable Markov decision process (POMDP); radio frequency (RF) energy; wireless power transmission (WPT)
- Citation
- JOURNAL OF COMMUNICATIONS AND NETWORKS, v.21, no.2, pp.168 - 176
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF COMMUNICATIONS AND NETWORKS
- Volume
- 21
- Number
- 2
- Start Page
- 168
- End Page
- 176
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/66509
- DOI
- 10.1109/JCN.2019.000015
- ISSN
- 1229-2370
- Abstract
- In directional energy transmissions, a radio frequency (RF) energy source needs to monitor each sector to achieve higher RF energy transmission efficiency. However, since the location of harvesting nodes can be dynamically changed in mobile environments, it is difficult to obtain the exact numbers of harvesting nodes and the distance between harvesting nodes and the RF energy source in all sectors within limited time. In such a situation, the operations of the RF energy source (i.e., monitoring sectors and transmitting the RF energy) can be modeled by a partially observable Markov decision process (POMDP), which has high complexity to be solved. As a practical solution, we propose an observation-based directional energy transmission algorithm (OB-DETA) that estimates the efficiency of energy transmission in sectors and transmits the RF energy to the selected sectors with high energy transmission efficiency (i.e., sectors with lots of non-fully-charged harvesting nodes around the RF energy source). Evaluation results are given to demonstrate the effectiveness of OB-DETA over the comparison schemes in terms of the RF energy transmission efficiency.
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Collections - Graduate School > Department of Computer and Information Science > 1. Journal Articles
- College of Engineering > School of Electrical Engineering > 1. Journal Articles
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