Recent Advances of LTE/WiFi Coexistence in Unlicensed Spectrum
Recent Advances of LTE/WiFi Coexistence in Unlicensed Spectrum
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DOI：
10.1109/mnet.2017.1700124
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发表时间：
2018-03-01
期刊：
影响因子：
9.3
通讯作者：
Reed, Jeffrey H.
中科院分区：
文献类型：
--
作者：
Huang, Yan;Chen, Yongce;Reed, Jeffrey H.
U-LTE是目前工业界和学术界正在开发的一种新的无线技术，用于在未经许可的频谱上提供LTE服务。U-LTE通过允许4G LTE蜂窝网络在未经许可的频段运行来解决频谱短缺问题。为了确保不同无线技术(特别是LTE和WiFi)之间的公平频谱共享，已经提出了许多共存机制。这些机制在时间、频率或功率域中运行，以最大限度地减少LTE的潜在不利影响。基于这些机制，业界正在开发一些U-LTE标准。在这篇文章中，我们通过回顾最先进的LTE/WiFi共存机制来展示这一令人兴奋的领域的最新进展，并展示它们如何被纳入行业标准。并指出了未来研究的几个关键挑战和有待解决的问题。
U-LTE is a new wireless technology that is currently being developed by industry and academia to offer LTE service in unlicensed spectrum. U-LTE addresses spectrum shortage from 4G LTE cellular networks by allowing them to operate in unlicensed bands. To ensure fair spectrum sharing among different wireless technologies (LTE and WiFi in particular), a number of coexistence mechanisms have been proposed. These mechanisms operate in the time, frequency, or power domains to minimize potential adverse effects from LTE. Based on these mechanisms, a number of U-LTE standards are being developed by industry. In this article, we present recent advances in this exciting area by reviewing the state-of-the-art LTE/WiFi coexistence mechanisms and show how they are incorporated into industry standards. We also point out several key challenges and open problems for future research.