A QoS Multicast Routing Protocol for Dynamic Group Topology

Abstract

This paper discusses the multicast routing problem with multiple QoS constraints, which may deal with the delay, delay jitter, bandwidth and packet loss metrics, and describes a network model for researching the routing problem. It presents a multicast routing protocol with multiple QoS constraints (MRPMQ). The MRPMQ attempts to significantly reduce the overhead of constructing a multicast tree with multiple QoS constraints. In MPRMQ, a multicast group member can join or leave a multicast session dynamically, which should not disrupt the multicast tree. It also attempts to minimize overall cost of the tree, and satisfy the multiple QoS constraints and least cost (or lower cost) requirements. In this paper, the proof of correctness and a complexity analysis of the MRPMQ are also given. Simulation results show that MRPMQ is a feasible approach to multicast routing with multiple QoS constraints.