Facing the challenges brought by the surge in the demand for mobile data traffic and increasingly scarce spectrum resources, two well-known channel access mechanisms named as duty-cycle muting (DCM) and listen- before-talk (LBT) have been proposed. In this article, we propose a novel adaptive hybrid channel access scheme which takes advantages of both mechanisms. Based on the WiFi traffic and the available licensed spectrum resource, our proposal can adaptively adjust the important parameters, such as the back-off window size and the duty-cycle time fraction, while ensuring fair and harmonious network coexistence between the WiFi and LTE-U systems. It can realize the flexible handoff between the DCM and LBT mechanisms to meet the requirements of different markets as well. Moreover, joint transmission power and spectrum resource allocation is also studied to improve the spectral efficiency on both licensed and unlicensed bands. The effectiveness of the proposed scheme is finally validated by numerical simulations.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Novel Channel Access Mechanism for LTE and WiFi Coexistence


    Contributors:
    Zhang, Jiaqi (author) / Liu, Shengli (author) / Yin, Rui (author) / Tang, Zhenzhou (author) / Yu, Guanding (author)


    Publication date :

    2019-09-01


    Size :

    730358 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Coexistence with WiFi for a Home Automation ZigBee product

    Dominguez, Federico / Touhafi, Abdellah / Tiete, Jelmer et al. | IEEE | 2012


    Bidirectional Mobile Offloading in LTE-U and WiFi Coexistence Systems

    Liu, Shengli / Zhang, Jiaqi / Chen, Qimei et al. | IEEE | 2018


    Spatial Multiplexing Based NR-U and WiFi Coexistence in Unlicensed Spectrum

    Chen, Qimei / Xu, Xiaoxia / Jiang, Hao | IEEE | 2019


    MTV: Mobile BitTorrent Video Sharing Using Harmonized LTE and WiFi Coexistence

    Yang, Yang / Zhang, Xiaoyi / Zhang, Lin | IEEE | 2017