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Analytical evaluation of extended DRX with additional active cycles for light traffic
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology. (Mobile Telecommunication)ORCID iD: 0000-0002-0019-8411
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology. (Mobile Telecommunication)
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology. (Mobile Telecommunication)
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology. (Mobile Telecommunication)
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2015 (English)In: The International Journal of Computer Networks (COMNET), Elsevier, ISSN 1389-1286, Vol. 77, 90-102 p.Article in journal (Refereed) Published
Abstract [en]

Abstract LTE and LTE-Advanced mobile technologies have integrated discontinuous reception (DRX) power saving method to optimize the power consumption at the user equipment (UE). The DRX method was proposed by the 3rd Generation Partnership Project (3GPP), and since then, the traffic behavior has been analyzed in several studies with a standard 3-state DRX model to describe the trade-off between power saving and delay. In this paper, we presented a novel 4-state and 5-state 3GPP LTE DRX mechanisms. The proposed mechanisms were developed by augmenting (an) active state(s) to deep and/or light sleep cycle of standard 3-state DRX for handling a small burst of packets, thereby bypassing the process of returning to the timer-dependent active mode. We have generated analytical models using a semi-Markov process for bursty packet data traffic and evaluated these augmented DRX mechanisms against a standard 3-state DRX method. Overall, the analytical results from varying timing parameters showed that our augmented DRX (both 4-state and 5-state) improved power saving factor (ranging between 1% and 8%) and reduced delay (ranging between 20% and 60%) compared to the standard 3-state DRX. Furthermore, the magnitude of improvement for both delay and power-saving was somewhat greater in 5-state than 4-state.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 77, 90-102 p.
Keyword [en]
LTE, LTE-Advanced, DRX, Power saving, Delay, Semi-Markov process
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-114286DOI: 10.1016/j.comnet.2014.11.020ISI: 000349502300006OAI: oai:DiVA.org:liu-114286DiVA: diva2:788911
Projects
EC-FP7 Marie Curie CIG Grant, Proposal number: 294182
Funder
EU, FP7, Seventh Framework Programme
Available from: 2015-02-17 Created: 2015-02-17 Last updated: 2016-03-02Bibliographically approved

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Fowler, ScottKarlsson, Johan M.Yuan, Di

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