Provisioning of QoS Routing based on Bandwidth Estimation in Mobile Ad-Hoc Network

Abstract – Mobile adhoc network (MANET) is very much popular due to the fact that these networks are dynamic, infrastructure less and scalable. Most of the routing protocols focus on obtaining a workable route without considering the quality of service (QoS). QoS is not easily achieved by the real time or multimedia applications due to node mobility, distributed channel access, and fading radio signal effects. Proposed mechanism makes the resource consumption more efficiently by minimizing the unnecessary signaling and stopping the session that cannot meet the demanded QoS requirement. Mechanism describes the QoS extension for Adhoc on-demand distance vector (AODV) routing. Our scheme does not modify the MAC protocol, but judge the effect of phenomena such as medium contention, channel fading and interference, from which gi the available bandwidth, on it. Based on this phenomenon the available bandwidth is estimated of a wireless host to each of its neighbors. QoS AODV shows a significant improvement in performance matrix such as throughput, available bandwidth, probability of packet loss and so on. An implementation and simulation study in NS-2 for above algorithm is for improvement in overhead, packet delivery ratio and delay over the standard AODV for high work load scenario.