Performance Optimization of Delayed WiFi Offloading in Heterogeneous Networks

Haneul Ko, Jaewook Lee, Sangheon Pack

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In the delayed WiFi offloading, since data are downloaded only through WiFi networks before a predefined delay timer expires, the performance of the delayed WiFi offloading is affected by the delay timer value. To assess the performance of the delayed WiFi offloading, we develop analytical models for the expected saving monetary cost and download completion time. Based on these analytical models, the optimal delay timer is derived to maximally save the monetary cost while maintaining the outage probability on the download time at low level. Evaluation results demonstrate the effects of the average cellular-only residence time and WiFi data rate, and show that better performance can be achieved when the delay timer is set to the optimal value.

Original languageEnglish
Article number7924325
Pages (from-to)9436-9447
Number of pages12
JournalIEEE Transactions on Vehicular Technology
Volume66
Issue number10
DOIs
Publication statusPublished - 2017 Oct 1

Fingerprint

Wi-Fi
Performance Optimization
Heterogeneous networks
Heterogeneous Networks
Analytical models
Outages
Costs
Analytical Model
Residence Time
Outage Probability
Completion Time
Evaluation
Demonstrate

Keywords

  • Delayed offloading
  • heterogeneous networks
  • optimal timer
  • performance optimization

ASJC Scopus subject areas

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

Cite this

Performance Optimization of Delayed WiFi Offloading in Heterogeneous Networks. / Ko, Haneul; Lee, Jaewook; Pack, Sangheon.

In: IEEE Transactions on Vehicular Technology, Vol. 66, No. 10, 7924325, 01.10.2017, p. 9436-9447.

Research output: Contribution to journalArticle

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