Open Access

ARTICLE

Multi-Rate Polling: Improve the Performance of Energy Harvesting Backscatter Wireless Networks

Yu Han^1,*, Wenxian Zheng², Guangjun Wen¹, Chu Chu¹, Jian Su³, Yibo Zhang⁴

1 School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, China.
2 Intellifusion Inc., Shenzheng, 518000, China.
3 Nanjing University of Information & Technology, Nanjing, 210044, China.
4 The University of British Columbia, Vancouver, V6T 1Z4, Canada.

* Corresponding Author: Yu Han. Email: .

Computers, Materials & Continua 2019, 60(2), 795-812. https://doi.org/10.32604/cmc.2019.05719

Abstract

In recent years, Researchers have proposed the concept of Energy Harvesting Backscatter Wireless Networks (EHBWN). EHBWN usually consists of one sink and several backscatter nodes. Backscatter nodes harvest energy from their environment and communicate with sink through backscattering the carrier wave transmitted by sink. Although a certain amount of access protocols for Energy Harvesting Wireless Networks have been present, they usually do not take the sink’s receiver sensitivity into account, which makes those protocols unsuitable in practice. In this paper, we first give an analysis of the backscatter channel link budget and the relationship between the effective communication range and uplink data rate. After that, we point out that a single uplink data rate for all the backscatter nodes is no longer suitable due to the constraint of sink receiver sensitivity. Later we propose Multi-rate Polling which divides the network into different uplink data rata regions to make sure the correct packet reception by the sink and improve the network performance. Multi-rate Polling also introduces a parameter K, through adjusting it, we can achieve the trade-off between network throughput and fairness to meet the requirement under various scenarios. We validate Multi-rate Polling under different networks and average harvesting rates through simulation. The result shows that the proposed protocol can effectively improve the network performance and has excellent scalability, which makes it suitable for EHBWN.

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Citations