GEMM :  A  Generic Mobility  Model for Generating  Intuitively Realistic Mobility Scenarios

In order to  conduct meaningful performance  analysis of routing algorithms in the context of Mobile Ad Hoc Network (MANET), it is essential that the underlying mobility model on which the simulation is based reflects realistic mobility behavior. However, current mobility models for MANET simulation are either unrealistic or are tailor-made for particular scenarios.  Furthermore, none of the existing mobility models support heterogeneous mobility behavior among different mobile nodes in the simulation.

GEMM is a tool for generating mobility models that are both realistic and heterogeneous.  These models are capable of simulating complex and dynamic mobility patterns representative of real-world situations.  The input to GEMM is a set of model  descriptions and the output is a mobility scenario that can be used by either the Glomosim or NS2 network simulator. Simulation results  are presented using AODV, OLSR and ZRP, three  previously published MANET routing algorithms. These results illustrate that mobility-model changes have a significant impact on their performance. The results underscore the importance of  using  realistic tic mobility scenarios in MANET simulation and demonstrate the ability of GEMM to generate such mobility scenarios.

Publication on GEMM
Realistic Mobility for Mobile Ad Hoc Network Simulation. Michael Feeley, Norman Hutchinson, Suprio Ray. ADHOC-NOW 2004, pp.324-329 (pdf)

Realistic Mobility for MANET Simulation. Suprio Ray. University of British Columbia, Vancouver.2003.


GEMM can be downloaded for academic/research purposes. Please download GEMM from here. This  is distributed under GNU General Public License . You can obtain a copy of the license from here.