Design Issues and Performance Analysis in QoS-based Multicast Routing with MST on the MANET

Abstract

In recent years, wireless technologies and applications are getting more and more popular. How to maintain link connection and link flow efficiently and effectively is an important issue on the MANET for achieving good performance, high reliability and profound availability. According to these demands, it appears that multicast routing is essential on the wireless network. First, we describe the background and find out the QoS requirements on the MANET. Then, we trace and revise the establishment of the multicast tree with MST (Minimum Spanning Tree) to consider the mobility speed of mobile nodes to make the complexity of the multicast tree on the MANET. We also design a multicast routing method with satisfying QoS parameters called QMRM (QoS-based Multicast Routing with MST Algorithm) on the MANET. In concept of OLSR (Optimal Link State Routing) protocol, QMRM is to support QoS guarantee of unicast, broadcast and multicast on the MANET. Based on the QualNet, we design a simulator with QMRM to perform the simulation and to compare the performance among QMRM, ODMRP, OLSR and DSR. Consequently, the proposed QMRM can be used in multicast routing on the MANET to achieve better routing performance and to provide a more flexible real-time application.