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Throughput and Delay Analysis of LWA With Bursty Traffic and Randomized Flow Splitting
Univ Sheffield, England.
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-4416-7702
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, Faculty of Science & Engineering.
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2019 (English)In: IEEE Access, E-ISSN 2169-3536, Vol. 7, p. 24667-24678Article in journal (Refereed) Published
Abstract [en]

We investigate the effect of bursty traffic in a long term evolution (LTE) and Wi-Fi aggregation (LWA)-enabled network. The LTE base station routes packets of the same IP flow through the LIE and Wi-Fi links independently. We motivate the use of superposition coding at the LWA-mode Wi-Fi access point (AP) so that it can serve LWA users and Wi-Fi users simultaneously. A random access protocol is applied in such system, which allows the native-mode AP to access the channel with probabilities that depend on the queue size of the LWA-mode AP to avoid impeding the performance of the LWA-enabled network. We analyze the throughput of the native Wi-Fi network and the delay experienced by the LWA users, accounting for the native-mode AP access probability, the traffic flow splitting between LTE and Wi-Fi, and the operating mode of the LWA user with both LIE and Wi-Fi interfaces. Our results show some fundamental tradeoffs in the throughput and delay behavior of LWA-enabled networks, which provide meaningful insight into the operation of such aggregated systems.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2019. Vol. 7, p. 24667-24678
Keywords [en]
LTE and Wi-Fi aggregation; shared access; throughput; delay; queueing analysis
National Category
Computer Systems
Identifiers
URN: urn:nbn:se:liu:diva-155950DOI: 10.1109/ACCESS.2019.2897017ISI: 000461247000001OAI: oai:DiVA.org:liu-155950DiVA, id: diva2:1301285
Note

Funding Agencies|Swedish Foundation for Strategic Research (SSF); Swedish Research Council (VR); Excellence Center at Linkoping-Lund in Information Technology; Joint Research Project Deploying High Capacity Dense Small Cell Heterogeneous Networks (DECADE), within the Research and Innovation Staff Exchange (RISE) Scheme of the European Horizon 2020 Framework Program [645705]

Available from: 2019-04-01 Created: 2019-04-01 Last updated: 2019-05-09

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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  • vancouver
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  • Other style
More styles
Language
  • de-DE
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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