发展5G的分析与建议

doi:10.11959/j.issn.1000-0801.2016185

摘要/Abstract

摘要：

首先简要介绍了5G在全球的研究进展，分析了5G的需求与挑战。分享了关于5G的几点再认识，指出5G是万物互联、连接场景的一代，电信IT化、软件定义、云化的一代，蜂窝结构变革的一代，承前启后和探索的一代。然后分析了5G 无线传输和网络的关键技术，简要介绍了笔者团队提出的PDMA、UUDN和虚拟RAT等技术。特别指出了TDD在5G中的应用优势，并预测5G新空口将采用TDD 模式。最后结合我国在TD-SCDMA和TD-LTE方面的创新经验，提出了关于我国实现“5G引领”的建议。

关键词: 5G, 物联网, TDD优势技术, 大规模多天线, PDMA, 超密集组网, SDN, NFV

Abstract:

Firstly,the global research progress of 5G was briefly introduced,and the requirements and challenges of 5G were analyzed.The understanding and views on 5G were shared,and 5G was pointed out as an internet of things generation,a telecom IT generation,software definition and cloud generation,a cellular structure transition generation,and serving as a link between the past and the future generation.Then,the key technologies of 5G wireless transmission and network were also analyzed,including PDMA,UUDN and virtual RAT technologies,which were proposed by the author's team.Particularly,the advantages of TDD in 5G was pointed,and the new air interface of 5G adopting TDD mode was predicted.At last,combined with China's innovative experience in TD-SCDMA and TD-LTE,suggestions on how to develop 5G in China were provided.

Key words: 5G, internet of things, TDD priority technology, massive MIMO, pattern division multiple access, ultra dense network, software defined networking, network function virtualization

陈山枝. 发展5G的分析与建议[J]. 电信科学, 2016, 32(7): 1-10.

Shanzhi CHEN. Analysis and suggestion of future 5G directions[J]. Telecommunications Science, 2016, 32(7): 1-10.

图/表 2

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关键指标	流量密度	连接密度	时延	移动性	能效	用户体验速率	谱效	峰值速率
ITU 5G取值	10 Tbit/s/km²	1 M/km²	1 ms	500 km/h	100倍	100 Mbit/s	3倍	10 Gbit/s
LTE能力	100 Gbit/s/km²	0.1 M/km²	10 ms	350 km/h	1倍	10 Mbit/s	1倍	0.6 Gbit/s
5G比4G提升/倍	100	10	10	2	100	10	3	30