Queuing network model for link and path availability of ad hoc networks

Abstract

Ad hoc networks are networks where there is no fixed infrastructure. The mobile nodes are independent and have distributed control. Modeling of ad hoc network is a critical task, which includes modeling of mobile behavior of nodes as well as behavior of wireless links. The mesh connected queuing network can be a good tool to model ad hoc network. In this work we are proposing a novel approach of modeling ad hoc network as a queuing network. The current state of art in modeling mobility in an ad hoc network consists of selecting a velocity and direction for a node and deriving an analytical model based on these parameters. This approach lacks the concept of path and link availability. In our novel approach, data taken from the various mobility scenarios through simulations are used to find out an appropriate distribution that gives connectivity between two nodes. The available and unavailable duration distributions obtained from AdHocSim are incorporated into queuing network. The effect of velocity, area and pause time on link availability are studied and presented. We simulated queuing network in OMNet++. Packet error rate and delay are measured and validated