Radiation constrained wireless charger placement

Haipeng Dai, Yunhuai Liu, Alex X. Liu, Lingtao Kong, Guihai Chen, Tian He

Research output: Chapter in Book/Report/Conference proceedingConference contribution

49 Scopus citations


Wireless Power Transfer has become a commercially viable technology to charge devices because of the convenience of no power wiring and the reliability of continuous power supply. This paper concerns the fundamental issue of wireless charger placement with electromagnetic radiation (EMR) safety. Although there are a few wireless charging schemes consider EMR safety, none of them addresses the charger placement issue. In this paper, we propose PESA, a wireless charger Placement scheme that guarantees EMR SAfety for every location on the plane. First, we discretize the whole charging area and formulate the problem into the Multidimensional 0/1 Knapsack (MDK) problem. Second, we propose a fast approximation algorithm to the MDK problem. Third, we optimize our scheme to improve speed by double partitioning the area. We prove that the output of our algorithm is better than (1 - ϵ) of the optimal solution to PESA with a smaller EMR threshold (1 - ϵ/2)Rt and a larger EMR coverage radius (1 + ϵ/2)D. We conducted both simulations and field experiments to evaluate the performance of our scheme. Our experimental results show that in terms of charging utility, our algorithm outperforms the prior art by up to 45.7%.

Original languageEnglish (US)
Title of host publicationIEEE INFOCOM 2016 - 35th Annual IEEE International Conference on Computer Communications
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467399531
StatePublished - Jul 27 2016
Event35th Annual IEEE International Conference on Computer Communications, IEEE INFOCOM 2016 - San Francisco, United States
Duration: Apr 10 2016Apr 14 2016

Publication series

NameProceedings - IEEE INFOCOM
ISSN (Print)0743-166X


Other35th Annual IEEE International Conference on Computer Communications, IEEE INFOCOM 2016
CountryUnited States
CitySan Francisco

Bibliographical note

Funding Information:
The work is partly supported by China 973 projects (2014CB340303, 2012CB316201), China NSF grants (61502229, 61472184, 61321491, 61472252, 61133006, 61321491, 613220428, 613300260), the Jiangsu Future Internet Program under Grant Number BY2013095-4-08, the Jiangsu High-level Innovation and Entrepreneurship (Shuangchuang) Program, and the Shanghai Recruitment Program of Global Experts.

Publisher Copyright:
© 2016 IEEE.

Copyright 2017 Elsevier B.V., All rights reserved.

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