Mobile Ipv6 In The Context Of The Transfer Study

Mobile network is now a hotspot in both the Internet world and the telecommunication world. With Mobile IPv6, a Mobile Node(MN) can transparently roam and handover across different IP subnet. However, when MN roams across subnets, handover delay is introduced, and some of the data packets could be lost. As more and more real time applications based on IP network are coming into existence, it gets even more critical to minimize the handover delay and packet loss rate for MN handover as well as providing seamlessly IP-based handover and improving QoS. Recently, Context transfer protocol (CTP) has been proposed by the Seamoby working group in IETF. This new concept has become a hot research area that attempts to achieve seamless handovers for MN. The main contributions of this thesis is:1. A framework for end-to-end DiffServ context transfer in MIPv6 was proposed. The scheme minimized the handover service disruption, and enabled real-time session to promptly get the same forwarding process during the MN performs handover.2. A solution which combines DiffServ with M-MPLS to provide a scalable and efficient QoS guarantees framework in the future 4G mobile communication networks was presented. The scheme can minimize the handover service disruption, and enable real-time session to promptly get the same forwarding process during the MN performs handover. The simulation results show that the scheme has better performance, such as smaller delay and delay jitter and packet loss ratio, and better throughput than others.