Optimizing DRX for Video delivery over LTE: Utilizing Channel Prediction and In-network caching

Farnaz Moradi, Mehmet Karaca, Emma Fitzgerald, Michal Pioro, Rickard Ljung, Björn Landfeldt

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

We jointly optimize Discontinuous Reception (DRX) cycle length and LTE scheduling to minimize mobile devices' energy usage for video delivery, utilising the now well-established potential to predict future channel conditions in cellular networks. Employing in-network caching, we set a strict buffer constraint which provides zero buffer underflow to improve Quality of Experience. Our study provides insight into the energy saving potential sophisticated DRX schemes hold, compared with the currently used static method. To this end, two novel DRX approaches are proposed and studied. The results show that more sophisticated DRX schemes (with variable DRX cycle length) can potentially save 69 percent energy for mobile devices, encouraging further research in the field.
Original languageEnglish
Title of host publication15th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt), 2017
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)978-3-9018-8290-6
DOIs
Publication statusPublished - 2017
Event Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt), 2017 - Paris, France
Duration: 2017 May 152017 May 19

Conference

Conference Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt), 2017
Country/TerritoryFrance
CityParis
Period2017/05/152017/05/19

Subject classification (UKÄ)

  • Communication Systems

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