Energy adaptive MAC protocol for IEEE 802.15.7 with energy harvesting

The medium access control（MAC） protocol for indoor visible light communication（VLC） with energy harvesting is explored in this paper. The unfairness of throughput exists among devices due to the significant difference of their energy harvesting rates which changes with distance, acceptance angle and...

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Bibliographic Details
Published in:Optoelectronics letters 2016-09, Vol.12 (5), p.370-374
Main Author: 汪红桥 迟学芬 赵琳琳
Format: Article
Language:English
Subjects:
Access control
Adaptive algorithms
Adaptive control
Energy harvesting
IEEE
Lasers
MAC协议
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
介质访问控制
概率模型
能量收集
自适应
采集速率
阻塞概率
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Summary:The medium access control（MAC） protocol for indoor visible light communication（VLC） with energy harvesting is explored in this paper. The unfairness of throughput exists among devices due to the significant difference of their energy harvesting rates which changes with distance, acceptance angle and the obstruction probability. We propose an energy harvesting model, a new obstruction probability model and an energy adaptive contention algorithm to overcome the unfairness problem. This device can adjust its contention window according to the energy harvesting rate. As a result, the device with lower energy harvesting rate can get shorter contention window to improve its transmission opportunity. Simulation results show that our MAC protocol can achieve a higher degree of fairness.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-016-6163-6