Research And Implementation Of Multi-Path TCP Mobility Management

With the development and the deployment of various heterogeneous networks, more and more mobile devices are equipped with multiple interfaces. Multi-homing and mobility become the main features of mobile devices. The simultaneous use of these multiple interfaces can bring several benefits such as improving the network resource usage, increasing the network throughput and so on. But traditional TCP protocol which holds an important position in network stack is restricted to a single path per connection. The Internet Engineering Task Force thus proposes MPTCP to provide multi-homed terminals with the ability to simultaneously use multiple paths between communication peers. However, multi-path TCP itself cannot provide mobility support. We thus propose the mobility management scheme inside MPTCP protocol.(1) This thesis has studied and analyzed MPTCP protocol and proposes the basic principle and requirements for multipath TCP mobility management scheme. Based on this, we then present two mobility management schemes that are schemes relying on mobile IP and location server.(2) This thesis detailed designs the MPTCP mobility management scheme based on location server. The scheme is based on the concept of ID/Locator separation, which provides the mobility support by the dynamic mapping of ID and Locator. The entire scheme is composed of MPTCP mobile host and location server. Location server is responsible for the management of host ID and locators while MPTCP mobile host is responsible for mobility events handling.(3) This thesis then implements a prototype of MPTCP mobility management scheme based on location server and then evaluates the prototype. The experiment results certify the feasibility of the scheme and system. The implemented system shows the practical significance for further study and deployments of MPTCP.In the end, the summary of the whole thesis, the current shortcomings of the system and the future work are given. Besides, the summary of the work and research progress during my postgraduate life are described.