Enabling Fair Spectrum Sharing between Wi-Fi and LTE-Unlicensed
Enabling Fair Spectrum Sharing between Wi-Fi and LTE-Unlicensed
复制标题
DOI：
10.1109/icc.2018.8422855
复制
发表时间：
2018-05
期刊：
影响因子：
--
通讯作者：
Kuo Chi;Longfei Wu;Xiaojiang Du;Guisheng Yin;Jie Wu;Bo Ji;X. Hei
中科院分区：
文献类型：
--
作者：
Kuo Chi;Longfei Wu;Xiaojiang Du;Guisheng Yin;Jie Wu;Bo Ji;X. Hei
由于移动流量的快速增长，大多数移动网络运营商在授权频段面临拥塞问题。一些电信供应商和运营商提议将长期演进（LTE）服务扩展到非授权频段以缓解流量拥塞。然而，非授权频段的LTE可能会干扰相同频段的Wi-Fi通信，并导致Wi-Fi服务质量显著下降。在本文中，我们提出一种新的机制，该机制能够使两种不同的无线技术（Wi-Fi和LTE）之间进行协商，从而确保Wi-Fi和非授权LTE（LTE - U）在相同频段内公平地共享频谱。我们将Wi-Fi和LTE - U的共存问题表述为一个约束优化问题，并解决了该问题。我们通过NS - 3仿真评估了所提出方案的性能。仿真结果表明，我们的方法能够有效提高整体信道利用率，并减少Wi-Fi和LTE - U之间的干扰。
Due to the fast increase of mobile traffic, most mobile network operators face the congestion issue in licensed spectrum bands. Several telecommunication vendors and operators propose to expand LTE service to the unlicensed spectrum bands to relieve the traffic congestion. However, LTE in unlicensed spectrum may interfere with Wi-Fi communications in the same bands and cause significant decrease in the quality of service of Wi-Fi. In this paper, we propose a novel mechanism that enables negotiations between two different wireless technologies (Wi-Fi and LTE), which ensures fair spectrum sharing between Wi-Fi and LTE-Unlicensed (LTE-U) in the same bands. We formulate the co-existence of Wi-Fi and LTE-U as a constrained optimization problem, and we solve the problem. We evaluate the performance of the proposed scheme via NS-3 simulations. The simulation results show that our approach can effectively improve the overall channel utilization and reduce the interference between Wi-Fi and LTE-U.