Aster Propagation Model Atoll 3.3.1 © Forsk 2016 Confidential – Do not share without prior permission Slide 1 Flexible Model Multi-RAT networks Supports all radio access technologies Multi-frequency deployments Supports frequencies from 150 MHz to 5 GHz Heterogeneous configurations Pre-calibrated for urban macro, micro, and small cells Pre-calibrated for rural environments Multiple propagation environments Supports all propagation environments from Dense Urban to Rural Outdoor to indoor & indoor to outdoor modelling Indoor antenna detection and automatic relocation © Forsk 2016 Confidential – Do not share without prior permission Slide 2 Fully Integrated 64-bit high-performance ray-tracing propagation Model Fully integrated in Atoll - Aster is fully integrated in the Atoll environment and there is no need for a special database or for any type of data pre-processing: Better performances for optimisation process in Automatic Cell Planning with direct connection to Atoll © Forsk 2016 Confidential – Do not share without prior permission Slide 3 Easy to use Geo Data Calculations can be based on 3D raster data alone (DTM & clutter heights) Can use 3D vector building data without any pre-processing: For geo data updates, files can be replaced easily without external process Both Vectors and Clutter Heights can be used for Ray Tracing Building Vectors (Optional) © Forsk 2016 Clutter Heights (Optional) Clutter Classes Confidential – Do not share without prior permission DTM Slide 4 Extremely Fast Extremely fast: Aster uses a unique high-speed ray-tracing technique, based on the raster sampling of building angles. Aster dynamically extracts geo data attributes from available 3D raster and/or vector 3D vector data directly provide these attributes 3D raster data is processed in real-time Ray Tracing techniques that can be time consuming are performed directly on raster => no slow processing on vectors Pixel type: corner, façade, inside © Forsk 2016 Orientation of façade and corners Confidential – Do not share without prior permission Slide 5 Highly Accurate Highly accurate: Aster can take all the main radio propagation effects into account, leading to highly accurate coverage prediction results. Ray tracing : it is based on two major components: • Vertical diffraction over rooftops based on Walfisch-Ikegami model and multiple knife-edge Deygout method • Horizontal diffraction based on Ray Tracing © Forsk 2016 Confidential – Do not share without prior permission Slide 6 Aster Ray Tracing Model Launched rays are traced through diffractions and reflections A maximum of 12 diffractions/reflections can be considered Aster uses geo data attributes for fast ray tracing calculations Angles Corner Interior Corner & corner angles Façade & façade angle © Forsk 2016 Confidential – Do not share without prior permission Slide 7 Indoor Calculations Outdoor to indoor penetration Indoor to outdoor modelling Indoor-only calculations Indoor antennas Automatic detection Optional relocation to outdoor on facades or roof Three different building type available for specific configuration: penetration loss and linear losses © Forsk 2016 Confidential – Do not share without prior permission Slide 8 Pre-Calibrated Model and Calibration Aster can work without calibration with reasonable accuracy Model’s default parameters are obtained from a high number of CW measurements around the world However, calibration Aster allows to boost its performance, especially in complex environments Atoll enables you to use available CW measurements to tune Aster and make it as close to real propagation measures as possible Typical performance: Macro: Standard deviation: 5.4 dB Micro: Standard deviation: 5.7 dB © Forsk 2016 Confidential – Do not share without prior permission Slide 9 Additional Features Common licence for model and calibration High performance calculation with up to 4 threads calculation per licence Differentiation of statistical and deterministic clutter classes with precalibration Separate losses for penetration and Line of Sight Rural optimisation Frequency correction for closest bands (700 and 800 for instance) Automatic relocation of antennas outside building on façade or roof © Forsk 2016 Confidential – Do not share without prior permission Slide 10 Thank you © Forsk 2016 Confidential – Do not share without prior permission Slide 11
