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.


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    Title :

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


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


    Publication date :

    2015-09-01


    Size :

    647165 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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