Information timeliness metrics and research progress for 6G network

Jingzhou SUN; Lehan WANG; Yuxuan SUN; Sheng ZHOU; Zhisheng NIU

doi:10.11959/j.issn.1000-0801.2021127

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Information timeliness metrics and research progress for 6G network

Topic: 5G+6G | 更新时间：2024-06-05

- Information timeliness metrics and research progress for 6G network
- Telecommunications Science Vol. 37, Issue 6, Pages: 3-13(2021)
- 作者机构：
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- DOI：10.11959/j.issn.1000-0801.2021127
  CLC： TN915
- Published Online：2021-06，
  
  Published：20 June 2021
- 稿件说明：
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Jingzhou SUN, Lehan WANG, Yuxuan SUN, et al. Information timeliness metrics and research progress for 6G network[J]. Telecommunications science, 2021, 37(6): 3-13.
DOI：

Jingzhou SUN, Lehan WANG, Yuxuan SUN, et al. Information timeliness metrics and research progress for 6G network[J]. Telecommunications science, 2021, 37(6): 3-13. DOI： 10.11959/j.issn.1000-0801.2021127.

摘要

在未来的6G网络中，机器型通信将成为网络承载的主要业务，并催生大量垂直行业应用，如网联自动驾驶、工业物联网等，从而使这些应用成为新的经济增长点。此类应用往往涉及状态信息的收集、处理与分发，对网络的时延具有极高的要求。而现有的低时延指标在节点数多、通信资源有限的场景下难以满足此要求。针对这一问题，指出在状态更新系统中应考虑信息时效性而非仅考虑时延。在此基础上，按照利用状态信息内容程度的不同，梳理了相关代表性工作，分别介绍并比较了多种信息时效性度量。最后，讨论了信息时效性的未来研究方向与亟须解决的关键问题。

Abstract

In the future 6G network

machine-type communication will dominate the network traffic.Many vertical applications

such as networked autonomous driving and industrial internet of things

will become new growth points.Such applications usually consist of the collection of status information and distribution of control signals

requiring ultra-low latency.However

this requirement is hard to meet with a large number of end nodes and limited communication resources.In view of this confliction

it was pointed out that the freshness of information should be considered in the status update system instead of just latency.Furthermore

according to the degree of utilization of status information

various measures of information freshness were introduced

and related representative work was summarized.Finally

the future research directions of information freshness and key questions that need to be answered were discussed.

关键词

Keywords

references

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