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

Junhee Park, Sourabh Solanki, Seunghwan Baek, Inkyu Lee

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Article number9468700
Pages (from-to)8320-8324
Number of pages5
JournalIEEE Transactions on Vehicular Technology
Volume70
Issue number8
DOIs
Publication statusPublished - 2021 Aug

Keywords

  • latency minimization
  • Mobile edge computing
  • wireless power transfer

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics

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