北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2018, Vol. 41 ›› Issue (5): 98-102.doi: 10.13190/j.jbupt.2018-155

• 论文 • 上一篇    下一篇

URLLC业务概率时延约束及资源预留的分析与研究

高月红, 李岚, 张欣, 杨鸿文   

  1. 北京邮电大学 信息与通信工程学院, 北京 100876
  • 收稿日期:2018-07-13 出版日期:2018-10-28 发布日期:2018-11-20
  • 作者简介:高月红(1981-),女,副教授,硕士生导师,E-mail:yhgao@bupt.edu.cn.
  • 基金资助:
    国家科技重大专项项目(2018ZX03001024-006)

Analysis and Research on the Probabilistic Delay Constraint and Resource Reservation for URLLC Traffic

GAO Yue-hong, LI Lan, ZHANG Xin, YANG Hong-wen   

  1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2018-07-13 Online:2018-10-28 Published:2018-11-20

摘要: 分析了第5代移动通信系统(5G)中超可靠低时延通信(URLLC)业务与增强移动带宽(eMBB)业务共存时,资源预留分配策略对URLLC业务的时延保障程度以及对eMBB业务服务质量的影响程度.基于随机网络演算分析理论,推导了满足URLLC业务概率时延约束要求的前提下所需的资源预留比例,即满足URLLC业务时延要求的最小门限值.此外,分析了eMBB业务的时延性能.研究结果表明,在系统总资源固定的情况下,为URLLC业务预留一定比例的资源后,eMBB业务的时延分布会受到一定程度的影响,其时延分布的恶化程度与资源预留比例密切相关.

关键词: 第5代移动通信系统, 低时延高可靠, 资源预留, 概率时延约束

Abstract: The delay guarantee of ultra-reliable and low-latency communication (URLLC) traffic under resource reservation policy was analyzed when both URLLC traffic and enhanced mobile broadband (eMBB) traffic co-exist in the fifth generation of mobile communications system (5G) system. The impact on eMBB traffic's quality of service was also analyzed. Based on the stochastic network calculus theory, the needed resource reservation ratio for URLLC traffic with probabilistic delay constraint requirement was investigated. Specifically, a minimum threshold, meeting this delay requirement for URLLC traffic, was derived. In addition, the delay performance of eMBB traffic was also analyzed. The results showed that, when the system resource was fixed, the delay distribution of eMBB traffic would be influenced by the amount of resource reserved for URLLC traffic, and the deteriorate level greatly depended on the reservation ratio.

Key words: the fifth generation of mobile communications system, ultra-reliable low latency, resource reservation, probabilistic delay constraint

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