Method of Avoiding the Speed Decay in Random Waypoint Mobility Model
Minghong Liao · Journal of Chinese Computer Systems · 2006
The stabilization of the average nodal speed was critical to research some performances′ evaluation and analysis of Ad hoc networks by simulation. Random Waypoint Mobility Model suffers from speed decay—average nodal speed decreased until converging to some long-term average. Such decay is unsound for simulations that collect results averaged over time, complicating the experiments, and the assumption that steady-state lasts over all simulation makes the results unreliable, collected before average nodal speed arrives at real steady-state. This paper demonstrates via mathematical analysis that speed decay is in general inevitable deriving some conclusions, and then using them provides an improved model iRWP that can effectively avoid the speed decay.