在无线缓存网络中基于SVC的内容放置和交付的最佳设计
Xuewei Zhang1, Lin Zhang1, Yuan Ren1
1School of Communications and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China.
Sensors (Basel, Switzerland)
|July 11, 2023
概括
无线网络中的边缘缓存可以减少传输延迟,并提高用户服务质量 (QoS). 这项研究优化了内容的放置和传输,与传统方法相比显示了显著的收益.
科学领域:
- 无线通信网络是无线通信网络.
- 信息理论是信息理论.
- 网络优化 网络优化
背景情况:
- 边缘缓存对于缓解回程流量和改善无线网络中用户服务质量 (QoS) 至关重要.
- 可扩展视频编码 (SVC) 通过编码成层来实现不同质量级的内容传输.
- 内容可以从边缘缓存 (辅助器) 或宏细胞基站 (MBS) 来获取.
研究的目的:
- 调查无线缓存网络中最佳的内容放置和传输策略.
- 为了尽量减少内容放置期间的传输延迟.
- 为了最大限度地提高内容传输期间的总率.
主要方法:
- 内容使用可扩展视频编码 (SVC) 编码成层.
- 为内容放置制定了延迟最小化问题.
- 为内容传输而制定的总量率最大化问题,使用半确定的放松 (SDR),连续凸近似 (SCA) 和算术-几何平均值 (AGM) 不等式来将非凸问题转换为凸形式来解决.
主要成果:
- 边缘辅助器的缓存内容显著减少了传输延迟.
- 拟议的算法证明了总额利率最大化的快速收.
- 与没有缓存的方案相比,边缘缓存提供了显著的总额利率增长.
结论:
- 最佳的内容放置和传输策略可以提高无线网络的性能.
- 边缘缓存有效地减少延迟并增加数据速率.
- 开发的优化技术为无线缓存网络提供了高效的解决方案.
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