WiFED Mobile: WiFi Friendly Energy Delivery with Mobile Distributed Beamforming

Subhramoy Mohanti; Elif Bozkaya; M. Yousof Naderi; Berk Canberk; Gokhan Secinti; Kaushik R. Chowdhury

doi:10.1109/TNET.2021.3061082

WiFED Mobile: WiFi Friendly Energy Delivery with Mobile Distributed Beamforming

Subhramoy Mohanti^*, Elif Bozkaya, M. Yousof Naderi, Berk Canberk, Gokhan Secinti, Kaushik R. Chowdhury

^*Corresponding author for this work

Department of Artificial Intelligence and Data Engineering

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Wireless RF energy transfer for indoor sensors is an emerging paradigm ensuring continuous operation without battery limitations. However, high power radiation within ISM band interferes with packet reception for existing WiFi devices. The paper proposes the first effort in merging RF energy transfer within a standards compliant 802.11 protocol, realizing practical and WiFi-friendly Energy Delivery with Mobile Transmitters (WiFED Mobile). WiFED Mobile architecture is composed of a centralized controller coordinating the actions of multiple energy transmitters (ETs), and deployed sensors that periodically requires charging. The paper first describes 802.11 supported protocol features that can be exploited by sensors to request energy and for ETs to participate in energy transfer. Second, it devises a controller-driven bipartite matching algorithm, assigning appropriate number of ETs to sensors for efficient energy delivery. Thirdly, it detects outlier sensors (OS), which have limited power reception from static ETs and utilizes mobile ETs (METs) to satisfy their charging cycles. The proposed in-band and protocol supported coexistence in WiFED Mobile is validated via simulations and partly in a software defined radio testbed, showing that METs reduce latency by 42% and improve throughput by 83% in scenarios where using only static ETs fails to satisfy charging cycles of OS.

Original language	English
Article number	9367010
Pages (from-to)	1362-1375
Number of pages	14
Journal	IEEE/ACM Transactions on Networking
Volume	29
Issue number	3
DOIs	https://doi.org/10.1109/TNET.2021.3061082
Publication status	Published - Jun 2021

Bibliographical note

Publisher Copyright:
© 1993-2012 IEEE.

Funding

Manuscript received April 29, 2020; revised December 11, 2020; accepted February 17, 2021; approved by IEEE/ACM TRANSACTIONS ON NETWORKING Editor G. Zussman. Date of publication March 2, 2021; date of current version June 16, 2021. This work was supported by the U.S. National Science Foundation under Grant CNS-1452628. (Corresponding author: Subhramoy Mohanti.) Subhramoy Mohanti, M. Yousof Naderi, and Kaushik R. Chowdhury are with the Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115 USA (e-mail: [email protected]; [email protected]; [email protected]).

Funders	Funder number
National Science Foundation	CNS-1452628

Keywords

distributed beamforming
quality of service
resource allocation
software defined radio
Wireless energy transfer

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10.1109/TNET.2021.3061082

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abstract = "Wireless RF energy transfer for indoor sensors is an emerging paradigm ensuring continuous operation without battery limitations. However, high power radiation within ISM band interferes with packet reception for existing WiFi devices. The paper proposes the first effort in merging RF energy transfer within a standards compliant 802.11 protocol, realizing practical and WiFi-friendly Energy Delivery with Mobile Transmitters (WiFED Mobile). WiFED Mobile architecture is composed of a centralized controller coordinating the actions of multiple energy transmitters (ETs), and deployed sensors that periodically requires charging. The paper first describes 802.11 supported protocol features that can be exploited by sensors to request energy and for ETs to participate in energy transfer. Second, it devises a controller-driven bipartite matching algorithm, assigning appropriate number of ETs to sensors for efficient energy delivery. Thirdly, it detects outlier sensors (OS), which have limited power reception from static ETs and utilizes mobile ETs (METs) to satisfy their charging cycles. The proposed in-band and protocol supported coexistence in WiFED Mobile is validated via simulations and partly in a software defined radio testbed, showing that METs reduce latency by 42% and improve throughput by 83% in scenarios where using only static ETs fails to satisfy charging cycles of OS.",

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WiFED Mobile: WiFi Friendly Energy Delivery with Mobile Distributed Beamforming

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