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Open AccessArticle

IBP Based Caching Strategy in D2D

School of Electronic and Information, Guangdong Polytechnic Normal University, Guangzhou 510665, China
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Appl. Sci. 2019, 9(12), 2416; https://doi.org/10.3390/app9122416
Received: 31 March 2019 / Revised: 15 May 2019 / Accepted: 27 May 2019 / Published: 13 June 2019
Device to Device (D2D) communication is a key technology in 5th generation wireless systems to increase communication capacity and spectral efficiency. Applying caching into D2D communication networks, the device can retrieve content from other devices by establishing D2D communication links. In this way, the backhaul traffic can be significantly reduced. However, most of the existing caching schemes in D2D are proactive caching, which cannot satisfy the requirement of real-time updating. In this paper, we propose an Indian Buffet Process based D2D caching strategy (IBPSC). Firstly, we construct a geographical D2D communication network to provide high quality D2D communications according to physical closeness between devices. Then devices are divided into several social communities. Devices are ranked by their node importance to community in each community. The base station makes caching decisions for devices according to contrition degree. Experimental results show that IBPSC achieves best network performance. View Full-Text
Keywords: Device to Device; caching; Indian Buffet Process Device to Device; caching; Indian Buffet Process
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MDPI and ACS Style

Shan, C.; Wu, X.-P.; Liu, Y.; Cai, J.; Luo, J.-Z. IBP Based Caching Strategy in D2D. Appl. Sci. 2019, 9, 2416.

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