Features

The Free-Space-Propagation model is primarily based on the elevation model. Optionally it takes into account visibility restrictions regarding the elevation model and the building model.

While this model is not well-suited for city centers and strongly cultured regions, it produces good results for suburban and rural regions. It can help you to identify critical regions where detailed measurements should be done.

The IEEE 802.16.3c proposes this model developed by Victor Erceg for WiMAX planning. It is designed for suburban - urban areas and considers three Non-Line-of-Sight (NLoS)-scenarios - A, B and C.
A - hilly, medium to high vegetation
B - hilly, low vegetation or flat with medium to high vegetation
C - flat with little vegetation (also for urban areas)

CORLA - a Cube Oriented Ray Launching Algorithm - uses a discrete cube based representation of the supplying area that leads to a fast identification and processing of diffraction and reflection sources. Different antenna patterns, delay spread and building penetration are inherent features of the algorithm.

CORLA is licensed by TNC (Telecommunication Network Consulting). Based on CORLA, TNC offers powerful decision support modules for UMTS network planning, like BTS_Opt. For more information visit www.telnetcon.com or contact info@telnetcon.de.

ITU-R P.1411-3 is a semi-empirical model based on COST 231 Walfish-Ikegami and enhanced by ITU-R.

The model considers detailed input data like average height and separation of buildings, street data (width, direction), BS and MS antenna height, length of the path covered by buildings as well as distance from BS to MS.