End-to-End Network Delay-Constrained for QoS Multicast Routing

Multicast services are used in emerging multimedia applications based on Quality of Service (QoS) development of multimedia group application and the construction of multicast routing tree is significant. Upper bound on the delay between sender and receiver is one of the common QoS constraints. Delay-constrained routing protocols are used to find paths subject to the delay constraint while efficiently using network resources, also the delay constrained routing problem is difficult because, different constraints can conflict with another. Many of the delay-constrained routing protocols that have been proposed in the literature give priority to cost minimization during the path computing process. With this approach, we propose a new approach for end-to-end delay-constrained routing in a network, which captures the trade-off between cost minimization and the risk level regarding to the delay constraint. We propose a method called delay-constrained routing agent (DCRA) that implements our approach using a simple and efficient parameterized selection function.