Joint Spatial and Propagation Models for Cellular Networks
Joint Spatial and Propagation Models for Cellular Networks
复制标题
蜂窝网络的联合空间和传播模型
DOI：
10.1109/glocom.2014.7417630
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
M. Haenggi
中科院分区：
文献类型：
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作者：
A. Guo;M. Haenggi
在现有的蜂窝网络模型中，假设基站的位置和传播条件是独立的随机性。然而，在实践中，在以覆盖为导向的部署中，目标是实现良好的基线覆盖，如果传播有利，蜂窝运营商会将基站放置得更远，反之亦然。因此，我们提出了一类新的蜂窝模型，其中BS的部署使得所有小区边缘用户获得来自服务BS的最小目标信号功率电平。盲源分离的空间结构是传播环境和目标信号功率共同作用的结果。我们称这种网络模型为联合空间和传播(JSPM)模型。为了建立这样的模型，我们假设路径损耗服从具有可变路径损耗指数的幂定律，从而在给定BSS的分布的情况下，在小区边缘获得目标信号功率。覆盖概率被定义为信号干扰加噪声比(SINR)超过阈值的概率，并被评估并与标准泊松和格子模型进行比较。我们的结果表明，如果考虑BS放置和传播之间的依赖关系，具有泊松分布BSS的网络在用户看来就像是格子网络。
In all current models for cellular networks, independent randomness in the positions of the base stations (BSs) and the propagation conditions is assumed. In practice, however, in coverage-oriented deployments, where the goal is to achieve good baseline coverage, cellular operators place the base stations further apart if propagation is favorable, and vice versa. We thus propose a new class of cellular model, where BSs are deployed such that all cell edge users achieve a minimum target signal power level from the serving BS. The spatial structure of the BSs is a result of the propagation environment and the target signal power. We call such network models joint spatial and propagation (JSP) models. To formulate such models, we assume the path loss follows a power law with a variable path loss exponent, so that the target signal power is achieved at the cell edges, given the distribution of the BSs. The coverage probability, defined as the probability that the signal-to- interference-plus-noise-ratio (SINR) exceeds a threshold, is evaluated and compared with the standard Poisson and lattice models. Our results show that networks with Poisson distributed BSs appear to the user like lattice networks if the dependence between BS placement and propagation is accounted for.