A Fair Listen-Before-Talk Algorithm for Coexistence of LTE-U and WLAN

Haneul Ko, Jaewook Lee, Sangheon Pack

    Research output: Contribution to journalArticlepeer-review

    92 Citations (Scopus)

    Abstract

    Recently, there has been an increasing interest in operating long-term evolution (LTE) in unlicensed bands (i.e., LTE-U). However, since LTE and wireless local area networks (WLANs) are designed to operate in different bands, they have no coexistence mechanism, which leads to significant performance degradation. In particular, since LTE does not sense channel vacancy prior to transmissions, the LTE interference severely affects the WLAN operation. To address this problem, we propose a fair listen-before-talk (F-LBT) algorithm for coexistence of LTE-U and WLAN in unlicensed bands. F-LBT jointly considers the total system throughput and the fairness between LTE-U and WLAN and then allocates an appropriate idle period for WLAN. Evaluation results demonstrate that F-LBT can improve the total system throughput while providing the fairness between LTE-U and WLAN.

    Original languageEnglish
    Article number7419263
    Pages (from-to)10116-10120
    Number of pages5
    JournalIEEE Transactions on Vehicular Technology
    Volume65
    Issue number12
    DOIs
    Publication statusPublished - 2016 Dec

    Bibliographical note

    Publisher Copyright:
    © 2016 IEEE.

    Keywords

    • Coexistence
    • LTE-unlicensed (LTE-U)
    • discrete-time Markov chain (DTMC)
    • fairness
    • listen before talk (LBT)
    • throughput
    • unlicensed bands

    ASJC Scopus subject areas

    • Automotive Engineering
    • Aerospace Engineering
    • Electrical and Electronic Engineering
    • Applied Mathematics

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