INVESTIGATING DIFFERENT QUEUING MECHANISMS ON ROUTING FOR DIFFERENT TRAFFIC MODELS IN MANETS

A Mobile Ad Hoc Network (MANET) is a collection of wireless mobile nodes that vary its topology forming a temporary network without any pre-existing infrastructure. Queuing mechanisms are techniques which are applied on data packets in network interface buffer. There are a number of queuing mechanisms such as First in First out (FIFO), Priority, Weighted Fair Queuing and Stochastic Fair Queuing. This paper provides a thorough investigation of selected queuing mechanisms (FIFO and Priority) using Constant Bit Rate (CBR) and Exponential traffic models. The performance differentials are analyzed using Network Simulator 2 (NS-2) with respect to a number of key performance metrics under varying mobility and offered load. The analysis concluded can serve in understanding the applications and scenarios where one model is better suited than the other.