Robustly Safe Charging for Wireless Power Transfer

Raipeng Dai, Yang Zhao, Guihai Chen, Wanchun Dou, Chen Tian, Xiaobing Wu, Tian He

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

17 Scopus citations

Abstract

One critical issue for wireless power transfer is to avoid human health impairments caused by electromagnetic radiation (EMR) exposure. The existing studies mainly focus on scheduling wireless chargers so that (expected) EMR at any point in the area doesn't exceed a threshold R-{t}. Nevertheless, they overlook the EMR jitter that leads to exceeding of Rt even if the expected EMR is no more than R-{t}. This paper studies the fundamental problem of RObustly SafE charging for wireless power transfer (ROSE), that is, scheduling the power of chargers so that the charging utility for all rechargeable devices is maximized while the probability that EMR anywhere doesn't exceed R-{t} is no less than a given confidence. We first build our empirical probabilistic charging model and EMR model. Then, we present EMR approximation and area discretization techniques to formulate ROSE into a Second-Order Cone Program, and the first redundant second-order cone constraints reduction algorithm to reduce the computational cost, and therefore obtain a (1-epsilon)-approximation centralized algorithm. Further, we propose a (1-epsilon)-approximation fully distributed algorithm scalable with network size for ROSE. Simulations and field experiments show that our algorithms can outperform comparison algorithms by 480.19%.

Original languageEnglish (US)
Title of host publicationINFOCOM 2018 - IEEE Conference on Computer Communications
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages378-386
Number of pages9
ISBN (Electronic)9781538641286
DOIs
StatePublished - Oct 8 2018
Event2018 IEEE Conference on Computer Communications, INFOCOM 2018 - Honolulu, United States
Duration: Apr 15 2018Apr 19 2018

Publication series

NameProceedings - IEEE INFOCOM
Volume2018-April
ISSN (Print)0743-166X

Other

Other2018 IEEE Conference on Computer Communications, INFOCOM 2018
Country/TerritoryUnited States
CityHonolulu
Period4/15/184/19/18

Bibliographical note

Funding Information:
This work is partially supported by the National Natural Science Foundation of China under Grant Numbers 61502229, 61672353, 61472252, 61321491, 61629302, 61373130, 61672276, 61772265, and 61602194, China 973 projects (2014CB340303), the Joint Research Fund for Overseas Chinese Scholars and Scholars in Hong Kong and Macao Young Scholars F030307 under Grant Number 61629302, and National Science and Technology Major Project of China under Grant Number 2017ZX03001013-003.

Publisher Copyright:
© 2018 IEEE.

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