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.
@article{arxiv.2101.08918,
title = {Performance Analysis for Cache-enabled Cellular Networks with Cooperative Transmission},
author = {Tianming Feng and Shuo Shi and Shushi Gu and Ning Zhang and Wei Xiang and Xuemai Gu},
journal= {arXiv preprint arXiv:2101.08918},
year = {2021}
}
Comments
arXiv admin note: text overlap with arXiv:2101.08669