5G communications race:pursuit of more capacity triggers LTE in unlicensed band

Al-dulaimi, Anwer and Al-rubaye, Saba and Ni, Qiang and Sousa, Elvino (2015) 5G communications race:pursuit of more capacity triggers LTE in unlicensed band. IEEE Vehicular Technology Magazine, 10 (1). pp. 43-51. ISSN 1556-6072

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Fifth-generation (5G) network developers need to identify the necessary requirements toward additional capacity and spectrally efficient wireless technologies. Therefore, the significant amount of underutilized spectrum in the Wi-Fi band is motivating operators to combine long-term evolution (LTE) with Wi-Fi technologies. This new LTE in unlicensed band (LTE-U) has the physical layer topology to access Wi-Fi spectrum, specifically the 5-GHz band. Nevertheless, the evolution of LTE-U affects the Wi-Fi operations due to the absence of any regularity for LTE-U transmissions in unlicensed band. In this article, we address the challenges for Wi-Fi to maintain transmissions under the umbrella of LTE-U as Wi-Fi is pushed offline because of the listen-before-talk (LBT) feature. Therefore, we derive a new adaptive LBT mechanism and and virtualized core network for the best practices in both Wi-Fi and LTE-U technologies. The proposed solutions include noncoordinated and coordinated network managements to enable coexistence between both technologies using tradeoff performance for fair spectrum sharing. We concentrate on the initial coexistent technique and discuss how it maps to higher-layer improvements. This article shows new approaches to achieve the Third-Generation Partnership Project (3GPP) Release 13.

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Journal Article
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IEEE Vehicular Technology Magazine
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25 Feb 2015 09:06
Last Modified:
19 Sep 2023 01:21