Obstacle constrained group mobility model

Abstract: Ad hoc networks are networks that can be deployed rapidly and requires no
fixed infrastructure to function. Ad hoc networks has a wide range of
applications such as rescue operations, military operation or at a disaster
scene where rapid communication is crucial. These kinds of scenarios have
different characteristics such as mobility and environment which affects
routing protocol performance.

Routing protocols are evaluated through simulations with different
parameters and scenarios. In order to evaluate these protocols fairly its
imperative the simulation environment resembles the intended scenario of
the protocol. Specifically, mobility models that resembles movement
patterns in such scenarios are essential.

In this thesis, a group mobility model called OCGMM is introduced. This
mobility model operates in an obstacle environment which restricts the
movement more or less to pathways. For comparison reasons, a mobility model
called RPGMM was implemented. This mobility model is very similar to OCGMM
except that movement is not restricted to pathways and no obstacles which
obstructs signal propagation exists.

In this thesis, routing protocols are evaluated with OCGMM and RPGMM.
Results show that protocols perform worse in OCGMM than in RPGMM. It has
been shown that scenarios with group mobility can have connectivity
problems. In closing, OCGMM incorporates group mobility in an obstacle
environment which fulfills characteristics some ad hoc networks might have.