Improving cellular capacity with white space offloading

Suzan Bayhan, Liang Zheng, Jiasi Chen, Mario DI Francesco, Jussi Kangasharju, Mung Chiang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

With growing data demand and the current dearth of spectrum, mobile operators are looking for new frequency bands to satisfy data-hungry users. One promising avenue of expansion is TV white spaces, which are currently available to secondary users as long as they do not interfere with primary (i.e., incumbent) users. In this work, we explore the benefits of offloading cellular traffic onto TV white spaces. We develop an analytical model and efficient algorithms to assign users to the cellular network or white space channels by considering their channel gains, multi-user interference on white space channels, and the cost of switching between different networks. We perform extensive data-driven simulations in two representative urban scenarios based on publicly available datasets. Our results show that white spaces can increase capacity by 16-62%, depending on the environment, but careful network selection is necessary to ensure that maximum capacity gains are realized. Moreover, we show that white spaces provide a significant benefit in serving indoor users where cellular channel conditions are poor. Specifically, our algorithms can offload up to 40% of cellular traffic to white spaces for indoor scenarios.

Original languageEnglish (US)
Title of host publication2017 15th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9783901882906
DOIs
StatePublished - Jun 27 2017
Event15th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2017 - Paris, France
Duration: May 15 2017May 19 2017

Publication series

Name2017 15th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2017

Other

Other15th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2017
CountryFrance
CityParis
Period5/15/175/19/17

All Science Journal Classification (ASJC) codes

  • Control and Optimization
  • Modeling and Simulation
  • Computer Networks and Communications

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    Bayhan, S., Zheng, L., Chen, J., DI Francesco, M., Kangasharju, J., & Chiang, M. (2017). Improving cellular capacity with white space offloading. In 2017 15th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2017 [7959891] (2017 15th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2017). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/WIOPT.2017.7959891