The Investigations Of Network Layer Active Transition Based On Separation Mapping

With the rapid development of network access technology and the steady improvement of the performance of the mobile terminal, the mobile Internet has become a hot spot of academic and industry attention. Due to the traditional Internet design at the beginning of the main fixed wired scenes, not fully consider the actual needs of wireless mobile scenarios, resulting in the existing mobile Internet in the active change of the support capability. The research work of this thesis mainly around the separation and mapping mechanism to carry out the network layer of active evolution technology research and its core idea is based on integrated network access identifier and identifier based routing between the separation and mapping mechanism, in-depth analysis of network user identity and the location of the dialectical unity relationship, thus simple and flexible implementation oriented network layer of active evolution function deployment and dynamic network.The integration of network separation mapping mechanism implementation scheme in the presence of the main problems include:only considering passive evolution, combined with the actual needs of the network characteristics of the state and the mobile terminal, take the initiative to complete the change of function; access identifier to exchange routing identifier mapping mostly in a certain position, cannot be dynamic and flexible deployment, scalability. In order to solve the above problems, the specific work of this thesis includes the design of active transition based on separation mapping, specific implementation Procedure and details, verification platform to build and test three parts:First of all to take the initiative to change function to construct the overall solution. Mapping mechanism design based on the separation of active change plan; Through in-depth summary of the traditional Internet protocol system, integrated identification network technology, such as content, can put forward a complete separation of mapping mechanism of flexible deployment plan; Introducing the idea of network adaptation layer, solve the problems of the existing technology poor scalability; Combined with the feature of access routers and wireless access point attribute, the rationality and validity of the demonstration project.Second around the initiative to change the core module implementation steps are put forward. Detailed the program initialization, motion detection, mobile registration and mapping update key processes, analyzes the advantages of the proposed scheme in terms of fast switching, route optimization and location privacy protection; the scheme plays an important role in the process of separation and mapping module and mapping table module, and the design of the related data structure; realize mapping generated entries, the identification information update action to support access router and the dynamic programming access point between the flexible deployment and configuration; enhance the system scalability and reduce the system cost of deployment.The last to take the initiative to change specific requirements to complete function and performance verification. Through constructing separation test platform to verify the basic function mapping; in the LAN and WAN two scenarios, respectively, to test the initiative to change the transmission rate of the video business process in fluency and download service; through acquisition under different environments, delay and packet loss rate of specific numerical and comparing different switching scheme of specific performance. The test results show that the proposed scheme meets the requirements of the basic functional requirements, and the mobile terminal in the experimental platform to switch between the upper layer application transmission performance is good.