LTE over unlicensed spectrum (LTE-U) is one of the promising approaches to further improve LTE network throughput. To maximize the benefit of LTE-U, in this work we study joint resource allocation for LTE over the legacy licensed spectrum and the sharing unlicensed spectrum in a multi-cell scenario. Specifically, we formulate a mixed-integer power-channel allocation problem aiming at maximizing the network throughput, with the constraints of protecting the coexisting Wi-Fi networks and hardware limitation of user equipments in the LTE-U networks. To solve the resource allocation problem efficiently, we exploit delay column generation approach to decompose the original optimization problem and then propose a novel algorithm based KKT conditions. Simulation results show the advantage of LTE-U networking and the effectiveness of the proposed algorithm in terms of convergence speed and network throughput.


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    Title :

    Joint Resource Allocation for LTE over Licensed and Unlicensed Spectrum


    Contributors:
    Zhen, Xiaojian (author) / Shan, Hangguan (author) / Yu, Guanding (author) / Cheng, Yu (author) / Cai, Lin X. (author) / Huang, Aiping (author)


    Publication date :

    2017-09-01


    Size :

    317294 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English