Link dynamics in MANET based on 3-D SGM mobility model
Guoce Huang · Journal of Jilin University · 2012
Existing studies of the link dynamics in Mobile Ad hoc Networks(MANETs) are mainly based on some traditional mobility models,such as Random Direction(RD) model and Random Waypoint(RWP) model etc.For these models,the unrealistic moving behaviors,such as sudden speed change and sharp turn,may invalidate the analytical and simulation results of link dynamics.The 3-D Smooth Gauss-semi-Markov(SGM) mobility model,which can truly reflect the physical law of moving objects in 3-D space,and the Markov chain theory were used to study the link dynamics in 3-D MANET.The analytical expressions for the link breakage probability and the expected link lifetime were derived from the probability density function of the relative velocity and the distance transition probability matrix between two nodes.Finally,the derived expressions were confirmed through simulations.The conclusion is valuable for the design of network protocols in 3-D MANETs.