计算机科学
认知无线电
马尔可夫决策过程
不可见的
计算机网络
部分可观测马尔可夫决策过程
频谱管理
无线
马尔可夫过程
无线网络
点对点
马尔可夫模型
马尔可夫链
电信
统计
认识论
机器学习
哲学
数学
作者
Pengbo Si,Yue Hao,Yanhua Zhang,Yuguang Fang
标识
DOI:10.1109/jsac.2016.2577320
摘要
To deal with the rapid growth of mobile data traffic and the user interest shift from peer-to-peer communications to content dissemination-based services, such as video streaming, information-centric networking has emerged as a promising architecture and has been increasingly used for wireless and mobile networks. In this paper, we focus on video dissemination in information-centric cognitive radio networks (IC-CRNs) and investigate the use of harvested bands for proactively caching video contents at the locations close to the interested users to improve the performance of video distribution. With consideration of the dynamic and unobservable nature of some parameters, we formulate the allocation of harvested bands as a Markov decision process with hidden and dynamic parameters and transform it into a partially observable Markov decision process and a multi-armed bandit formulation. Based on them, we develop a new spectrum management mechanism, which maximizes the benefit of proactive video caching as well as the efficiency of spectrum utilization in the IC-CRNs. Extensive simulation results demonstrate the significant performance improvement of the proposed scheme for video streaming.
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