Distributed Weight Based Clustering with Efficient Channel Access to Improve Quality of Service in Mobile Ad-Hoc Networks (DWCA)

Mobile ad hoc network is a set of mobile nodes connecting with each other without physical infrastructure and centralized computing. Factors such as variable wireless link quality, propagation path loss, fading, multiuser interference, power expended, and topological changes, become relevant issues. Quality of Service (QoS) is a set of service requirements that needs to be met by the network while transporting a packet stream from a source to its destination. QoS support for Mobile Adhoc Networks (MANETs) is a challenging task due to the dynamic topology and limited resources. The clustering algorithm presents a logical topology to the routing algorithm, and it accepts feedback from routing algorithm in order to adjust that logical topology and make clustering decisions. In this algorithm we have introduced a new metric, next hop availability, which is a combination of two metrics. It maximizes path availability and minimizes travel time of packets and therefore offers a good balance between selection of fast paths and a better use of network resources. In the conclusion it provides simulation result of DWCA Algorithm performed on network simulator.