5G系统中shortened TTI技术的介绍与研究
Introduction and Research of Shortened TTI Technology in 5G System
随着移动互联网和物联网井喷式地发展，面向2020年的第五代移动通信技术(5G)正在走向我们的生活。而用户对于用户体验的极致追求给5G技术带来了巨大的挑战。与3G、4G网络相比，5G技术的一个非常重要的特性就是超低时延的传输。近期，3GPP(3rd Generation Partnership Project)在NR(New Radio)项目的研究中，在帧结构方面提出考虑采用更短的子帧长度(shortened TTI)，并在RAN1中立项。本文通过介绍LTE系统中的时延组成，总结出5G系统中降低时延的主要技术，并重点介绍新型帧结构shortened TTI技术。之后对系统级仿真结果进行分析，仿真结果说明shortened TTI技术可以极大地提高系统吞吐量，达到有效降低时延的目的。
With the explosive development of Mobile Internet and IoT, for 2020, the 5th Generation of mobile communication technology (5G) is moving into our lives. The ultimate pursuit of user experience for users has brought 5G technology great challenges. Compared with 3G, 4G networks, a very important characteristic of 5G technology is ultra-low latency transmissions. Recently in 3GPP NR(New Radio) research project, TTI reduction and shortened processing time have been proposed for the new frame structure, and have been set up as a study item in RAN1. This paper describes the composition of delays in LTE system, summarizes the main techniques for reducing the delays in 5G system, and highlights the new frame structure--shortened TTI technology. Its system-level simulation results show that shortened TTI technology can greatly improve the system throughput and reduce delays.?????
刘越、高月红、杨大成、许九旭
通信无线通信
无线通信技术新型帧结构低时延shortened TTI5G
wireless communication technologynew frame structurelatency reductionshortened TTI5G
刘越,高月红,杨大成,许九旭.5G系统中shortened TTI技术的介绍与研究[EB/OL].(2016-11-10)[2025-08-10].http://www.paper.edu.cn/releasepaper/content/201611-135.点此复制
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