Wireless Caching Helper Networks: Ginibre Point Process Modeling and Analysis

2018 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC)(2018)

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摘要
In this paper, we consider wireless caching helper networks (WCHNs) consisting of cache-enabled device-to-device (D2D) transmitters and caching helpers (CHs), which deliver data by exploiting cached contents. We consider two types of modes at a typical user, namely D2D and CH modes. In the D2D and CH modes, after requesting a content, the user receives the content from a D2D transmitter and a CH caching the content, respectively. In practical scenarios, to mitigate interference, the CHs may not be placed close to each other, and thus there exists a form of repulsion among the CHs' locations. In this context, we model the spatial distribution of the CHs as a beta-Ginibre point processe, which reflects the repulsive behavior and contains the Poisson point process as a special case. Then, we provide analytical expressions for the coverage probabilities in the WCHNs.
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关键词
Wireless caching helper networks,edge caching,device-to-device communications,repulsive point process,Ginibre point process,stochastic geometry
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