嘉宾评论:LTE在未授权频谱

Guanding Yu, Geoffrey Y. Li, Li-Chun Wang, A. Maaref, Jemin Lee, D. López-Pérez
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引用次数: 6

摘要

本专题部分的文章重点介绍在未授权频谱中部署长期演进技术。这些文章涵盖了各种设计问题,如网络体系结构、协议开发、网络共存、未经许可的频谱访问和实际实现。第五代(5G)蜂窝网络将面临日益增长的数据速率需求的严峻挑战。为了满足这种预期的数据增长需求,业界和学术界已经开发了许多尖端技术来提高频谱利用率。然而,频谱资源的稀缺性仍然是网络容量提升的根本瓶颈。最近,5.8 GHz未经许可的国家信息基础设施(U-NII)频谱上丰富的可用带宽激发了蜂窝运营商将未经许可的频谱用于LTE的极大兴趣。2015年,lte - unlicensing (LTE-U)论坛正式推出LTE-U规范,第三代合作伙伴计划(3GPP)将授权辅助接入(LAA)的标准化推进到第13和14版。然而,LTE-U技术仍处于起步阶段,不同无线接入技术之间的网络共存、免授权频谱共享与接入、免授权频谱上的服务质量(QoS)提供等问题亟待解决。本专题旨在全面概述这一吸引人的技术,协调最近的结果和主要挑战,并强调未来的重要方向。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Guest Editorial: LTE in Unlicensed Spectrum
The articles in this special section focus on the deployment of Long Term Evolution in unlicensed spectrum. These articles cover various design issues such as network architecture, protocol development, network coexistence, unlicensed spectrum access, and practical implementation. Fifth generation (5G) cellular networks will face a rigorous challenge in the ever increasing data rate requirement. To meet such anticipated data growth demand, the industry and academia have developed many cutting edge techniques to improve spectrum utilization. However, the scarcity of spectral resources is still a fundamental bottleneck for network capacity enhancement. Recently, the rich available bandwidth on the 5.8 GHz unlicensed national information infrastructure (U-NII) spectrum has stimulated substantial interest from cellular operators to use the unlicensed spectrum for LTE. In 2015, the LTE-Unlicensed (LTE-U) Forum formally launched the LTE-U specification, and the Third Generation Partnership Project (3GPP) has pushed the standardization of licensed assisted access (LAA)into its Releases 13 and 14. However, the LTE-U technology is still in its infancy, and there are lots of challenges that need to be solved, such as network coexistence among different radio access technologies, unlicensed spectrum sharing and access, and quality of service (QoS) provision on unlicensed spectrum. This Feature Topic aims to provide a comprehensive overview of this appealing technology, harmonizing recent results and key challenges, as well as highlighting future important directions.
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