Integration of MIP-ROQS optimal path selection and MPLS

Users of IP-based services need mobility support and guaranteed quality of service while using multimedia application. MIP introduced by IETF supports IP mobility at network layer. MIP however uses triangle routing, which can be considered a traffic engineering issue. The result of constant routing of packets destined to the mobile node via its home agent creates traffic congestion at this node. On the other hand, there is a signaling conflict while providing quality of service and routing optimization simultaneously. This paper introduces cooperation of MIP enhanced with a QoS constraint based routing mechanism and MPLS architecture. This is to address the traffic congestion at home agent while providing quality of service over optimal routes. The optimal route is chosen based on the network constraints and QoS requirements. Using our proposal, traffic in MIP is conducted via optimal paths that are labeled using MPLS labeling mechanism. This will result in optimized resource utilization in network as well as QoS guaranteed for MIP services.