通信学报 ›› 2023, Vol. 44 ›› Issue (11): 55-66.doi: 10.11959/j.issn.1000-436x.2023232

• 专题:复杂环境下分布式边缘智能 • 上一篇    

用户密集环境下基于边缘智能的直播视频传输优化机制

顾晓丹, 吴文甲, 凌振   

  1. 东南大学计算机科学与工程学院,江苏 南京 211189
  • 修回日期:2023-11-01 出版日期:2023-11-01 发布日期:2023-11-01
  • 作者简介:顾晓丹(1987− ),女,江苏常州人,博士,东南大学讲师,主要研究方向为移动互联网、网络安全、匿名通信等
    吴文甲(1983− ),男,江苏盐城人,博士,东南大学副教授,主要研究方向为移动物联网、智能无线网络等
    凌振(1982− ),男,江苏宜兴人,博士,东南大学教授,主要研究方向为移动物联网、网络安全与隐私、可信计算等
  • 基金资助:
    国家自然科学基金资助项目(62072102);国家自然科学基金资助项目(62132009);国家自然科学基金资助项目(62102084)

Live video transmission optimization mechanism based on edge intelligence in high client-density environment

Xiaodan GU, Wenjia WU, Zhen LING   

  1. School of Computer Science and Engineering, Southeast University, Nanjing 211189, China
  • Revised:2023-11-01 Online:2023-11-01 Published:2023-11-01
  • Supported by:
    The National Natural Science Foundation of China(62072102);The National Natural Science Foundation of China(62132009);The National Natural Science Foundation of China(62102084)

摘要:

针对传统直播视频传输优化机制部署在服务器侧,无法快速响应用户终端所处的无线网络环境动态变化的问题,提出基于边缘智能的直播视频传输优化机制S-Edge。该机制部署在基于OpenWrt的无线接入点上,综合利用占空比、信噪比等无线信道状态信息,基于模糊逻辑理论对终端优先级及传输速率进行智能决策,并通过分层令牌桶的主动队列管理和业务需求驱动的无线传输速率自适应控制技术,实现直播视频终端业务的实时调度。为了验证所提机制 S-Edge 的有效性和性能,在真实场景下搭建基于多射频接口的硬件实验平台并开展用户密集无线网络环境下的实验。实验结果表明,S-Edge可以显著降低平均时延和丢包率,有效提升用户密集环境下直播视频传输业务的服务质量指标。

关键词: 无线局域网, 直播视频传输, 用户密集, 边缘智能

Abstract:

The traditional live video transmission optimization mechanism is deployed on the server side, which cannot quickly respond to the dynamic changes of the user’s wireless network environment.To address this problem, a live video transmission optimization mechanism based on edge intelligence called S-Edge was proposed.It was deployed on the OpenWrt-based wireless access point, and comprehensively utilized the wireless channel state information such as airtime utilization and signal-to-noise ratio to make intelligent decisions on terminal priority and transmission rate based on fuzzy logic theory.Furthermore, the active queue management with hierarchical token bucket and service demand-driven wireless transmission rate adaptive control technologies were introduced to realize the real-time scheduling of live video data.In order to verify the effectiveness and performance of the proposed mechanism, a high client-density environment was built through user clusters based on multi-radio interfaces in the real-world scenario.Experimental results show that S-Edge can significantly reduce the average delay and packet loss rate, which meets QoS requirements of live video transmission services in the high client-density environment.

Key words: WLAN, live video transmission, high client-density, edge intelligence

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