Performance Optimization of Delayed WiFi Offloading in Heterogeneous Networks
- Authors
- Ko, Haneul; Lee, Jaewook; Pack, Sangheon
- Issue Date
- 10월-2017
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Delayed offloading; heterogeneous networks; optimal timer; performance optimization
- Citation
- IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, v.66, no.10, pp.9436 - 9447
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
- Volume
- 66
- Number
- 10
- Start Page
- 9436
- End Page
- 9447
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/82148
- DOI
- 10.1109/TVT.2017.2703135
- ISSN
- 0018-9545
- 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.
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- Appears in
Collections - Graduate School > Department of Computer and Information Science > 1. Journal Articles
- College of Engineering > School of Electrical Engineering > 1. Journal Articles
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