Wireless video caching and dynamic streaming under differentiated quality requirements
主要知识点1：
- Lyapunov optimization
网络中序列动态状态的优化-->状态趋于稳定
keywords: dynamic, state, backlog, stability, optimize， control
通过控制系统状态到稳定值，从而最小化目标值。 - 论文(video optimization)中应用个：
dynamic user association adaption.
Specifically, every user has a queue to store the chunks of video. the state of queue changes with the receiving and processing chunks.
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