新型互聯(lián)網(wǎng)中基于連接標(biāo)識的移動切換機(jī)制研究與實現(xiàn)
[Abstract]:With the development of network and wireless access technology, multi-homed mobile terminals are becoming more and more popular, and more users are required to switch between different networks. Traditional transport protocols, such as TCP,UDP, do not support path handoff. A new connection-oriented transmission control protocol (Connection-Oriented Transmission Control Protocol for New Internet,COTCP) is proposed, and the optimal one of the multiple paths is chosen as the main path for transmission. Other paths act as alternate paths and can quickly switch to alternate paths for data transmission in the event of a failure of the primary path. When a multi-homed mobile terminal switches between different networks, the connection may be disrupted due to the change of the network condition. Based on the new Internet architecture, this paper designs and implements a mobile handoff mechanism based on connection identification. Before the mobile handover, the path to be switched is predicted in advance, and the connection is maintained in the process of mobile switching through the connection identification. First of all, this paper studies the new Internet architecture, analyzes the advantages of using connection identification for transmission, and studies and implements connection identification and socket based on connection identification. Using connection identification to communicate can manage the connection more effectively, enhance the mobility and security of network transmission, and achieve the purpose of separating identity from location. Secondly, the mobile switching module based on connection identification is designed and implemented, including the path state module, the mobile pre-switch module and the path parameter estimation module. In the path parameter module, this paper studies and implements a variety of path selection mechanisms, including bandwidth-based routing, minimum delay-based routing and congestion window-based routing. The mobile handoff mechanism based on connection identification can detect the change of network condition and prejudge, and select the optimal path as the main path after switching. Finally, the mobile handoff mechanism based on connection identification is tested and verified. The test results show that the proposed scheme basically meets the functional requirements of mobile handoff, that is, when the network condition changes, the path handoff can be carried out in time, and the optimal path can be selected to carry on the path handover.
【學(xué)位授予單位】:北京交通大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TP393.0
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