Quality of Service (QoS) is an important issue that should be addressed to provide acceptable level of service to the mobile nodes. The assumption is that mobile nodes require the same quality of services as fixed nodes. However, due to the mobility feature within a mobile network, it is difficult to achieve this goal. Besides, routing methods in a mobile IPv6 network deliver packets from a correspondent node to the mobile node and vice versa via specific tunnel. In the tunnel, packets are encapsulated and routers do not have any access to the original packets. This results in the situation where resource reservation cannot be handled at the routers. For this purpose, a new cross layer design called Resource Reservation over Mobile Application (ROMA) is proposed. In this design, a traffic engineering is also proposed to improve network end-to-end delay. It allows a fraction of traffic to exceed QoS requirements. Simulation is used to evaluate the proposed approach by considering parameters such as link throughput, and end-to-end delay. Simulation results demonstrate that the proposed approach enhances the end-to-end delay, while maximizing the link throughput in comparison with recent works.

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