A QoS Based Multicast Routing Protocol in Ad Hoc Networks

With the rapid development of Internet, mobile networks and high-performance networking technology, QoS multicast routing in networks with uncertain parameters has become a very important research issue in the areas of networks and distributed systems. This paper discusses the multicast routing problem with multiple QoS constraints, which may deal with the delay, bandwidth and cost metrics, and describes a network model for researching the Ad Hoc network QoS multicast routing problem. It presents a multicast routing protocol with QoS constraints (QMRP). In this paper, the proof of correctness and complexity analysis of the QMRP are also given. Simulation results show that QMRP optimizes the multicast tree, is better than other protocols and is more suitable for the network situations with the status changed frequently and the real-time multimedia application. It is an effective approach to multicast routing decision with multiple QoS constraints.