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Cache Placement Optimization in D2D-assisted Wireless Cognitive Networks

Cheng Zhan,
Zhe Wen,
Hong Lai,
Zhiguo Qu,

Abstract


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.


Citation Format:
Cheng Zhan, Zhe Wen, Hong Lai, Zhiguo Qu, "Cache Placement Optimization in D2D-assisted Wireless Cognitive Networks," Journal of Internet Technology, vol. 19, no. 5 , pp. 1435-1441, Sep. 2018.

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Published by Executive Committee, Taiwan Academic Network, Ministry of Education, Taipei, Taiwan, R.O.C
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