| With the evolution of wireless communication technology and the development of the chip integration, most of the terminals in the market are equipped with multiple network interfaces. The multi-connection technology in the heterogeneous network environment has become a new hot research topic. The goal is to provide better connectivity and more flexible user experience through the collaboration of the multiple connections. To realize the goal, mobile terminals, access networks, core networks and services need to be harmonized. Currently, some exploratory solutions have been put forward by different International Standardization Organizations, in order to utilize the new capabilities brought by the multi-connection technology, such as load balancing, bandwidth aggregation, and so on.In the thesis first the basic theory of the multi-connection technology, including the definition, scenarios and advantages of the multi-connection is analyzed. Then the current research on the multi-connection technology from different International Standardization Organizations is investigated. Finally we summarize the challenges, main issues to be solved, as well as the existing problems related with the multi-connection technology.On this basis of the investigation, we focus on the key technology of multi-connection-IP flow-based connection control. An autonomic flow-based path selection method is proposed, which takes different kinds of information into consideration, such as information from current operator, network, terminal and user, in order to select the most appropriate communication path for the data flows of the multi-interface nodes effectively and automically. Finally, two simulation scenarios are implemented under NS2 to verify the performance of the path selection algorithm. The simulation results show that the proposed path selection method can improve the performance of the node and provide better user experience. |
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