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arXiv · 2101.08918

Performance Analysis for Cache-enabled Cellular Networks with Cooperative Transmission

Tianming Feng·Shuo Shi·Shushi Gu·Ning Zhang·Wei Xiang·Xuemai Gu
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Abstract

The large amount of deployed smart devices put tremendous traffic pressure on networks. Caching at the edge has been widely studied as a promising technique to solve this problem. To further improve the successful transmission probability (STP) of cache-enabled cellular networks (CEN), we combine the cooperative transmission technique with CEN and propose a novel transmission scheme. Local channel state information (CSI) is introduced at each cooperative base station (BS) to enhance the strength of the signal received by the user. A tight approximation for the STP of this scheme is derived using tools from stochastic geometry. The optimal content placement strategy of this scheme is obtained using a numerical method to maximize the STP. Simulation results demonstrate the optimal strategy achieves significant gains in STP over several comparative baselines with the proposed scheme.

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Tianming Feng, Shuo Shi, Shushi Gu, Ning Zhang, Wei Xiang, Xuemai Gu. 2021-01-22. Performance Analysis for Cache-enabled Cellular Networks with Cooperative Transmission. https://arxiv.org/abs/2101.08918

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