Stability Analysis of Wireless Powered Communication Networks

Mingfu Li, Ching Chieh Fang, Huei Wen Ferng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In RF-based wireless powered communication networks (WPCNs), wireless devices can receive energy from electromagnetic waves radiated by dedicated energy transmitters or hybrid access points for operation. However, the energy charging rate at a wireless device is usually unstable or low because of time-varying characteristics of wireless channels or health concerns. When the wireless charging rate is low, the data backlog at a wireless device may be continuously growing, leading to data loss and system performance degradation. To maintain a finite data backlog and keep a wireless powered device stable, the data acquisition/arrival rate at a wireless powered device must be constrained under the given wireless charging rate and data transmission rate. Thus, this paper theoretically analyzes the stability condition of a wireless powered device using a two-dimensional continuous-time Markov chain model. The considered model with a finite energy storage buffer is never investigated in the literature, and thus the proposed model and analytical result in this paper are completely novel. Simulations are also conducted to validate the analytical result and show that the derived stability condition is necessary and sufficient for a wireless powered device.

Original languageEnglish
Title of host publication2020 Asia-Pacific International Symposium on Advanced Reliability and Maintenance Modeling, APARM 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728171029
DOIs
StatePublished - 08 2020
Event2020 Asia-Pacific International Symposium on Advanced Reliability and Maintenance Modeling, APARM 2020 - Vancouver, Canada
Duration: 20 08 202023 08 2020

Publication series

Name2020 Asia-Pacific International Symposium on Advanced Reliability and Maintenance Modeling, APARM 2020

Conference

Conference2020 Asia-Pacific International Symposium on Advanced Reliability and Maintenance Modeling, APARM 2020
Country/TerritoryCanada
CityVancouver
Period20/08/2023/08/20

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

Keywords

  • Internet of things (IoT)
  • continuous-time Markov chain
  • simultaneous wireless information and power transfer (SWIPT)
  • stability condition
  • wireless energy transfer (WET)
  • wireless powered communication network (WPCN)

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