Abstract-To alleviate network congestion and improve the spectrum efficiency, it is natural to consider operating Long Term Evolution (LTE) on unlicensed spectrum, which is called Unlicensed LTE (U-LTE). In order to get practical experience with U-LTE, NTT DOCOMO and Huawei built up a U-LTE trial system operating over bandwidth of 20MHz in 5.8 GHz unlicensed bands and a field trial was conducted in 2014. The U-LTE system operated in real time and was field tested in typical indoor environments. In this paper, we report the field trial results for both U- LTE and Wi-Fi systems. Our objective is twofold: firstly, coverage and capacity performance in single cell are presented to confirm the potential effectiveness of using U-LTE in the operator network. Secondly, the intra-Radio-Access-Technology (RAT) coexistence performance conducted in different interference scenarios disclosed a challenging problem, i.e., the straightforward introduction of LTE into the unlicensed spectrum is not recommended and interference avoidance technology is necessary in U-LTE.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    A Field Trial of Unlicensed LTE (U-LTE) in 5.8 GHz Band


    Beteiligte:
    Lan, Yang (Autor:in) / Wang, Lihui (Autor:in) / Jiang, Huiling (Autor:in) / Takeda, Kazuki (Autor:in) / Harada, Hiroki (Autor:in) / Wenfang, Tang (Autor:in) / Qiang, Li (Autor:in) / Nagata, Satoshi (Autor:in)


    Erscheinungsdatum :

    01.09.2015


    Format / Umfang :

    647165 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Adaptive Unlicensed Band Access for Downlink Cellular Networks

    Kim, Hyunsoo / Bang, Jonghyun / Kim, Seokjung et al. | IEEE | 2015


    Dynamic Pricing for Intelligent Transportation System in the 6G Unlicensed Band

    Bajracharya, Rojeena / Shrestha, Rakesh / Hassan, Syed Ali et al. | IEEE | 2022


    Research into unlicensed drivers

    Cox, D. J. / Great Britain | British Library Conference Proceedings | 2002


    A Survey and Comparison of Device-to-Device Architecture Using LTE Unlicensed Band

    Ismaiel, Bushra / Abolhasan, Mehran / Smith, David et al. | IEEE | 2017