LTE和Wi-Fi网络的双时间尺度未授权频谱划分算法

doi:10.11959/j.issn.1000-436x.2021059

通信学报 ›› 2021, Vol. 42 ›› Issue (3): 45-53.doi: 10.11959/j.issn.1000-436x.2021059

LTE和Wi-Fi网络的双时间尺度未授权频谱划分算法

吴伟华¹, 刘润滋², 杨清海¹

¹ 西安电子科技大学通信工程学院，陕西西安 710071
² 西安建筑科技大学信息与控制工程学院，陕西西安 710055

修回日期:2020-11-19 出版日期:2021-03-25 发布日期:2021-03-01
作者简介:吴伟华（1988- ），男，河北石家庄人，博士，西安电子科技大学讲师，主要研究方向为无线资源分配、人工智能、随机网络优化及其在LTE-U网络中的应用。
刘润滋（1988- ），女，山东潍坊人，博士，西安建筑科技大学副教授，主要研究方向为无线网络、空间网络中的资源管理和性能分析。
杨清海（1976- ），男，山东高密人，博士，西安电子科技大学教授，主要研究方向为自主通信、内容交付网络和LTE-A技术等。
基金资助:
国家自然科学基金资助项目(61801365);国家自然科学基金资助项目(61701365);国家自然科学基金资助项目(61971327);中国博士后科学基金资助项目(2018M643581);陕西省高校科协青年人才托举计划基金资助项目(20200112);中央高校基本科研业务费专项资金资助项目(20103216726)

Two-timescale unlicensed spectrum partitioning algorithm between LTE and Wi-Fi network

Weihua WU¹, Runzi LIU², Qinghai YANG¹

¹ School of Telecommunications Engineering, Xidian University, Xi’an 710071, China
² School of Information and Control Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China

Revised:2020-11-19 Online:2021-03-25 Published:2021-03-01
Supported by:
The National Natural Science Foundation of China(61801365);The National Natural Science Foundation of China(61701365);The National Natural Science Foundation of China(61971327);China Postdoctoral Science Foundation Project(2018M643581);Young Talent Fund of University Association for Science and Technology in Shannxi Province(20200112);Research Funds for the Central Universities(20103216726)

摘要/Abstract

摘要：

根据Wi-Fi和LTE的频谱划分决策分别取决于全局信道状态信息（CSI）和局部CSI，提出了双时间尺度频谱划分算法，在较大时间尺度上根据全局CSI划分Wi-Fi频谱，在较小时间尺度上根据局部CSI划分LTE频谱。设计了自适应反馈补偿机制以提高双时间尺度算法的跟踪性能。此外，得到双时间尺度算法能够无差错地跟踪上均衡点的充分条件。仿真实验表明，双时间尺度算法能够以非常低的开销实现较好系统性能。

关键词: 未授权频谱, 共存, LTE, Wi-Fi, 双时间尺度算法

Abstract:

According to the spectrum partitioning decisions of Wi-Fi and LTE respectively depended on global channel state information (CSI) and local CSI, an online two-timescale iteration algorithm was developed.The Wi-Fi spectrum was partitioned at the large timescale according to the global CSI whereas the LTE spectrum was partitioned according to the fast-changing local CSI.Then, the adaptive compensation mechanism was designed for improving the tracking performance of the two-timescale algorithm.Moreover, the sufficient condition was derived for the two-timescale algorithm tracking the moving equilibrium point without errors.Finally, the simulation results show that the proposed two-timescale algorithm achieves excellent system performance at very low overhead.

Key words: unlicensed spectrum, coexistence, LTE, Wi-Fi, two-timescale algorithm

中图分类号:

TN929.5

吴伟华, 刘润滋, 杨清海. LTE和Wi-Fi网络的双时间尺度未授权频谱划分算法[J]. 通信学报, 2021, 42(3): 45-53.

Weihua WU, Runzi LIU, Qinghai YANG. Two-timescale unlicensed spectrum partitioning algorithm between LTE and Wi-Fi network[J]. Journal on Communications, 2021, 42(3): 45-53.

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LTE和Wi-Fi网络的双时间尺度未授权频谱划分算法

Two-timescale unlicensed spectrum partitioning algorithm between LTE and Wi-Fi network

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