The Extension And Performance Evaluation Of QoS Signaling In Mobile IPv6 Environment

With the development of Internet technology, there are an increasing large number of users and growing real-time services. Different from the traditional IP service, in addition to the request of simple information transmission, the real-time services also have clear requirement of delay and bandwidth. Meanwhile, due to the rapid development of the mobile communication technology, the real-time services are also applied under mobile network environment, and new requirements of QoS (Quality of Service) guarantee are proposed in mobile network environment. Therefore, how to provide QoS guarantee in the Mobile IPv6 network is a hot topic.The existing solutions of QoS in Mobile IPv6 are most based on RSVP. However, due to RSVP's shortcomings in security, flexibility and scalability, the NSIS (Next Steps in Signaling) protocol suite has been introduced into our research project. According to the modular requirement, the NSIS protocol suite is structured in two layers: signalingtransport layer (NTLP—NSIS Transport Layer Protocol) and signalingapplication layer (NSLP—NSIS Signaling Layer Protocol), and thelayered architecture determines the flexibility and scalability of NSIS.The main innovation of this paper is to extend the NTLP protocol suite to Mobile IPv6 networks. In addition, we propose a cross layer signaling flow of our extensions in typical NSIS depoyment models. We focus on the state management and the signaling transport mechanisms of the NTLP protocol suite in Mobile IPv6 scenarios. And we also propose the corresponding solutions to solve the existing problems. The NTLP protocol suite on NS2 simulation platform has been implemented. With the deployment models, we evaluate the performance of signaling transport service provided by the NTLP protocol suite.