Optimization and Analysis of Probabilistic Caching in $N$ -Tier Heterogeneous Networks

  title={Optimization and Analysis of Probabilistic Caching in \$N\$ -Tier Heterogeneous Networks},
  author={Kuikui Li and Chenchen Yang and Zhiyong Chen and Meixia Tao},
  journal={IEEE Transactions on Wireless Communications},
In this paper, we study the probabilistic caching for an <inline-formula> <tex-math notation="LaTeX">$N$ </tex-math></inline-formula>-tier wireless heterogeneous network (HetNet) using stochastic geometry. A general and tractable expression of the successful delivery probability (SDP) is first derived. We then optimize the caching probabilities for maximizing the SDP in the high signal-to-noise ratio regime. The problem is proved to be convex and solved efficiently. We next establish an… CONTINUE READING
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