Cache Placement Optimization in D2D-assisted Wireless Cognitive Networks

被引：0
|
作者：
Zhan, Cheng [1 ]
Wen, Zhe [1 ]
Lai, Hong [1 ]
Qu, Zhiguo [2 ]
机构：
[1] Southwest Univ, Sch Comp & Informat Sci, Chongqing, Peoples R China
[2] Nanjing Univ Informat Sci & Technol, Sch Comp & Software, Nanjing, Jiangsu, Peoples R China
来源：
JOURNAL OF INTERNET TECHNOLOGY | 2018年 / 19卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Cooperative caching; Content placement; Device-to-Device; Cognitive networks; RADIO NETWORKS; ACCESS;
D O I：
10.3966/160792642018091905015
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, we consider the cooperative caching in wireless cognitive device-to-device (D2D) network, where unlicensed users can use under-utilized licensed spectrum and cached contents can be shared by cooperating with each other. We formulate the cooperative caching problem to minimize the download time of mobile users. A heuristic caching strategy is then proposed to handle the content placement in the caches. Simulation results show that the proposed caching scheme can significantly reduce total download time compared with the traditional caching scheme.
引用
收藏
页码：1435 / 1441
页数：7
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