In mmWave networks, a large or nearby object can obstruct multiple communication links, which results in spatial correlation in the blocking probability between a user and two or more base stations (BSs). This paper characterizes this blocking correlation and derives its impact on the signal-to-interference-plus-noise ratio (SINR) of a mmWave cellular network. We first present an exact analysis of a 1D network and highlight the impact of blocking correlation in the derived expressions. Gaining insights from the 1D analysis, we develop an analytical framework for a 2D network where we characterize the sum interference at the user by considering the correlation between the blocking of serving and interfering links. Using this, we derive the SINR coverage probability. Via simulations, we demonstrate that including blockage correlation in the analysis is required for accurate characterization of the system performance, in particular when the blocking objects tend to be large.

中文翻译：

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阻塞相关性对毫米波蜂窝网络性能的影响


在毫米波网络中，大型或附近的物体可能会阻碍多个通信链路，从而导致用户与两个或多个基站 (BS) 之间的阻塞概率存在空间相关性。本文描述了这种阻塞相关性的特征，并得出其对毫米波蜂窝网络的信号干扰加噪声比 (SINR) 的影响。我们首先对一维网络进行精确分析，并强调导出表达式中块相关性的影响。从一维分析中获得见解，我们开发了一个二维网络的分析框架，在该框架中，我们通过考虑服务链路阻塞和干扰链路之间的相关性来表征用户的总干扰。利用这一点，我们可以推导出 SINR 覆盖概率。通过模拟，我们证明了在分析中包含阻塞相关性对于准确表征系统性能是必需的，特别是当阻塞对象往往很大时。