An effective queuing architecture for elastic and inelastic traffic with different dropping precedence in MANET

Abstract

Mobile ad hoc network (MANET) is a group of self-organized mobile nodes that are associated with comparatively low bandwidth wireless links. This paper proposes an effective queuing architecture, which supports both elastic and inelastic traffic. The packets of inelastic flows are always stored ahead of those of the elastic flows. If a link is critically loaded by the inelastic traffic, it results in large delays and elastic traffic may have some delay constraints that are nonnegligible. The virtual queue algorithm reduces the experienced delay by comprising virtual queues that are served at a fraction of the actual service rate and by using the virtual queue-length values in utility function. Then, optimization framework is used in which scheduling algorithm allocates resource fairly in the network to meet the fairness objectives of both elastic and inelastic flows. Finally, priority dropping active queue management algorithm is designed based on proportional-integral design (PID) mechanism which provides the differentiated services for the different layers or frames according to their priority.