Arbeitsgruppe Verteilte Systeme

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A Ray Launching Based Propagation Loss Model for ns-3

Architecture of RaLaNS

RaLaNS calculates the signal strength distribution for given 3-dimensional maps and may be used either separately or in combination with ns-3 (see It accepts polygon-lists, OSM-maps (see, or CityGML-maps (see as input data. RaLaNS contains viewers for the rays and the signal stength distribution and examples in order to demonstrate both, the usage of RaLaNS and the integration in ns-3. Further information may be found in our papers.

RaLaNS is available as open source software under BSD-license. For download links, see below.

Questions, suggestions and bug reports may be sent to Thomas Hänel.


Thomas Hänel, Alexander Bothe, Nils Aschenbruck
"RaLaNS - A Ray Launching Based Propagation Loss Model for ns-3"
Proc. of the International Conference on Networked Systems
NetSys/KiVS, Cottbus, Germany, Mar. 9-13, 2015, [pdf].

Thomas Hänel, Matthias Schwamborn, Alexander Bothe, Nils Aschenbruck
"On the Map Accuracy required for Network Simulations based on Ray Launching"
Proc. of the IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks
WoWMoM, Boston, MA, USA, June 14-17, 2015, [pdf].