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Popularity-Aware Caching Increases the Capacity of Wireless Networks
IEEE Transactions on Mobile Computing ( IF 7.9 ) Pub Date : 2020-01-01 , DOI: 10.1109/tmc.2019.2892419
Li Qiu , Guohong Cao

In wireless ad hoc networks, due to the interference between concurrent transmissions, the per-node capacity generally decreases with the increasing number of nodes in the network. Caching can help improve the network capacity, as it shortens the content transmission distance and reduces the communication interference. However, current researches on the capacity of wireless ad hoc networks with caching generally assume that content popularity follows a uniform distribution. They ignore the fact that contents in reality have skewed popularity, which may lead to totally different capacity results. In this paper, we evaluate how the distribution of the content popularity affects the per-node capacity, and derive different capacity scaling laws based on the skewness of the content popularity. Our results suggest that for wireless networks with caching, when contents have skewed popularity, increasing the number of nodes monotonically increases the per-node capacity.

中文翻译:

流行感知缓存增加了无线网络的容量

在无线自组织网络中,由于并发传输之间的干扰,每个节点的容量通常随着网络中节点数量的增加而降低。缓存可以帮助提高网络容量,因为它缩短了内容传输距离并减少了通信干扰。然而,当前关于具有缓存的无线自组织网络容量的研究通常假设内容流行遵循均匀分布。他们忽略了现实中的内容已经扭曲了流行的事实,这可能导致完全不同的容量结果。在本文中,我们评估了内容流行度的分布如何影响每个节点的容量,并根据内容流行度的偏度推导出不同的容量扩展规律。我们的结果表明,对于具有缓存的无线网络,
更新日期:2020-01-01
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