Self-Organized QoS Aware Multicast Routing Scheme for Ad Hoc Networks

Abstract

Mobile ad hoc networks (MANETs) are formed by an autonomous collection of mobile nodes making dynamic networks. Mobile ad hoc networks multimedia applications require an efficient and effective quality of service aware multicast routing scheme. Supporting quality-of-service in an ad hoc environment is a major challenge due to the unpredictable and potentially changing topology. Further the shared wireless medium and strict resource constraints impose additional challenges in providing quality of service support to MANET. In this paper, the issues in providing quality of service support to multicast routing schemes are analyzed and a new cluster-based scheme that provides QoS guarantees to multicast routing in MANETs is presented. The performance of the proposed scheme is evaluated via simulations and is compared with hierarchical QoS multicast routing protocol (HQMRP). Analysis shows that the control overhead of the proposed protocol is less than that of the existing protocols. The simulation results show that the packet delivery ratio in the proposed scheme is better than HQMRP under high mobility scenarios and this scheme is adaptable to the frequent topology changes.