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arXiv 1307.8409cs.NImath.PR
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在大型蜂窝网络中,用户吞吐量如何取决于业务需求

How user throughput depends on the traffic demand in large cellular networks

Bartlomiej Blaszczyszyn, Miodrag Jovanovic, Mohamed Kadhem Karray

摘要:

利特尔定律允许将网络的任何区域中的平均用户吞吐量表示为该区域中的平均业务需求与稳态平均用户数的比率。通常在每个小区的操作网络中收集相应的统计数据。使用遍历参数和Palm理论的形式主义,我们表明,在网络中的全球平均用户吞吐量等于这两种手段在稳定状态下的“典型细胞”的比率。在这里,这两种手段占双平均:随着时间的推移和网络的几何形状,并可以与每表面的业务需求,基站密度和空间分布的SINR。后者占网络的不规则性,阴影和空闲细胞通过细胞负载方程。我们验证了我们的方法比较分析和模拟结果的泊松网络模型的真实网络细胞测量。

英文摘要:

Little's law allows to express the mean user throughput in any region of the network as the ratio of the mean traffic demand to the steady-state mean number of users in this region. Corresponding statistics are usually collected in operational networks for each cell. Using ergodic arguments and Palm theoretic formalism, we show that the global mean user throughput in the network is equal to the ratio of these two means in the steady state of the "typical cell". Here, both means account for double averaging: over time and network geometry, and can be related to the per-surface traffic demand, base-station density and the spatial distribution of the SINR. This latter accounts for network irregularities, shadowing and idling cells via cell-load equations. We validate our approach comparing analytical and simulation results for Poisson network model to real-network cell-measurements.

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