Line-of-Sight Probability for Urban Microcell Network Deployments

In this paper we present a new line-of-sight probability model for the urban micro cellular deployment scenario. This study utilises a high resolution 3D model of central London to conduct large scale ray-tracing of direct propagation paths between neighbouring lamp posts. These serve as a representation of mmWave self-backhauling small cells such as 3GPP integrated access and backhaul nodes. The statistical properties of the propagation paths are assessed against recognised line-of-sight probability models as a function of the distance between transmitter and receiver. Contributions as outlined in this paper have application in analytical studies aiming to understand the statistical characteristics of unobstructed high frequency 'access' links between microcell sites and end users as well as 'transport' backhaul links between neighbouring microcell sites.