Latency Minimization for Wireless Powered Mobile Edge Computing Networks with Nonlinear Rectifiers

Junhee Park; Sourabh Solanki; Seunghwan Baek; Inkyu Lee

doi:10.1109/TVT.2021.3093630

Latency Minimization for Wireless Powered Mobile Edge Computing Networks with Nonlinear Rectifiers

Junhee Park, Sourabh Solanki, Seunghwan Baek, Inkyu Lee

School of Electrical Engineering

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

15 Citations (Scopus)

Abstract

This paper investigates a wireless powered mobile edge computing (MEC) network where a hybrid access point (H-AP) serves energy-constrained devices. For such a wireless powered MEC network, the H-AP first transmits wireless information and energy simultaneously in the downlink. Then, by utilizing the harvested energy, the device processes both its local data and the received data from the H-AP. In this system, we minimize the latency by jointly optimizing the power splitting ratio of rectifiers, the data offloading power, the local computing frequency, and the data offloading ratio at the device. By applying a polyblock outer approximation procedure, we propose an algorithm which guarantees the optimal solution. Simulation results verify the efficiency of the proposed algorithm compared to conventional schemes.

Original language	English
Article number	9468700
Pages (from-to)	8320-8324
Number of pages	5
Journal	IEEE Transactions on Vehicular Technology
Volume	70
Issue number	8
DOIs	https://doi.org/10.1109/TVT.2021.3093630
Publication status	Published - 2021 Aug

Bibliographical note

Funding Information:
Manuscript received May 20, 2020; revised November 10, 2020 and March 31, 2021; accepted June 25, 2021. Date of publication June 30, 2021; date of current version August 13, 2021. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) under Grant 2017R1A2B3012316. The review of this article was coordinated by Dr. Berk Canberk. (Corresponding author: Inkyu Lee.) The authors are with the School of electrical engineering, Korea University, Seoul 02841, South Korea (e-mail: pjh0585@korea.ac.kr; sourabhsolanki@ieee.org; s_baek@korea.ac.kr; inkyu@korea.ac.kr). Digital Object Identifier 10.1109/TVT.2021.3093630

Publisher Copyright:
© 1967-2012 IEEE.

Keywords

Mobile edge computing
latency minimization
wireless power transfer

ASJC Scopus subject areas

Automotive Engineering
Aerospace Engineering
Electrical and Electronic Engineering
Applied Mathematics

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10.1109/TVT.2021.3093630

Cite this

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title = "Latency Minimization for Wireless Powered Mobile Edge Computing Networks with Nonlinear Rectifiers",

abstract = "This paper investigates a wireless powered mobile edge computing (MEC) network where a hybrid access point (H-AP) serves energy-constrained devices. For such a wireless powered MEC network, the H-AP first transmits wireless information and energy simultaneously in the downlink. Then, by utilizing the harvested energy, the device processes both its local data and the received data from the H-AP. In this system, we minimize the latency by jointly optimizing the power splitting ratio of rectifiers, the data offloading power, the local computing frequency, and the data offloading ratio at the device. By applying a polyblock outer approximation procedure, we propose an algorithm which guarantees the optimal solution. Simulation results verify the efficiency of the proposed algorithm compared to conventional schemes. ",

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Latency Minimization for Wireless Powered Mobile Edge Computing Networks with Nonlinear Rectifiers

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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