QoE-aware video cooperative caching and transmission mechanism based on TWDM-PON and C-RAN

Dapeng WU; Xue LI; Hongxia LI

doi:10.11959/j.issn.1000-436x.2019066

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QoE-aware video cooperative caching and transmission mechanism based on TWDM-PON and C-RAN

Papers | 更新时间：2024-06-05

- QoE-aware video cooperative caching and transmission mechanism based on TWDM-PON and C-RAN
- Journal on Communications Vol. 40, Issue 3, Pages: 80-91(2019)
- 作者机构：
  
  1. 重庆邮电大学通信与信息工程学院，重庆 400065
  2. 重庆市光通信与网络重点实验室，重庆 400065
  3. 中国联合网络通信有限公司重庆市分公司，重庆 401123
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61771082);The National Natural Science Foundation of China(61871062);Chongqing University Innovation Team Construction Project Funded Projects(CXTDX201601020)
- DOI：10.11959/j.issn.1000-436x.2019066
  CLC： TP302
- Online First：2019-03，
  
  Published：25 March 2019
- 稿件说明：
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Dapeng WU, Xue LI, Hongxia LI. QoE-aware video cooperative caching and transmission mechanism based on TWDM-PON and C-RAN[J]. Journal on Communications, 2019, 40(3): 80-91.
DOI：

Dapeng WU, Xue LI, Hongxia LI. QoE-aware video cooperative caching and transmission mechanism based on TWDM-PON and C-RAN[J]. Journal on Communications, 2019, 40(3): 80-91. DOI： 10.11959/j.issn.1000-436x.2019066.

摘要

随着数据流量的爆发式增长，用户体验质量急剧恶化，为了解决密集组网与负载不均衡所引发的小区边缘用户与重负载小区用户性能较差的问题，提出了一种体验质量感知的云无线接入网视频协作缓存与传输机制。该机制通过建立协作增益感知的虚拟无源光网络，采用光域和无线域协同的方式为视频内容提供协作缓存与传输；进而，联合优化用户视频体验、带宽配置与缓存策略，分别在光域和无线域采用动态预缓存及缓冲水平感知的带宽配置方式，达到提高用户体验质量的目的。结果表明，所提机制能够有效地提高缓存命中率，增强用户体验质量。

Abstract

The quality of user experience suffers from performance deterioration dramatically due to the explosively growing data traffic.To improve the poor performance of cell-edge users and heavy-load cell users

which caused by dense network and load imbalance respectively

an QoE-aware video cooperative caching and transmission mechanism in cloud radio access network was proposed.Cooperative gain-aware virtual passive optical network was established to provide cooperative caching and transmission for video streaming by adopting collaborative approach in optical domain and wireless domain.Furthermore

user experience for video streaming

bandwidth provisioning and caching strategy were jointly optimized to improve QoE

which utilized the methods of dynamic caching in optical domain and buffer level-aware bandwidth configuration in wireless domain.The results show that the proposed mechanism enhances the quality of user experience and effectively improves the cache hit rate.

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Keywords

references

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