| Summary: | 碩士 === 國立中興大學 === 電機工程學系 === 90 === Since the Internet has been so popular and widely use by people, the traffic congestion becomes a serious problem. TCP under the layer 4 does provide the flow control mechanism however the protocol is acting passively. Traditionally, TCP consider the network as a "black box", unfortunately, the black box was unable to provide any information to the transmitter. How to improve the shortcoming of TCP is an important issue. Mascolo indicated that by using the Smith's Predictor could improve the drawback of TCP. In this thesis, we had done a simulation, which can prove the Mascolo’s suggestion. From the simulation we know that without the bottleneck queue could cause the packet loss therefore make the system work improperly and inefficiently. We use the Mascolo’s concept and reserves part of bottleneck queue as a buffer. From the simulation result shows that the system performance has been improved. Simulink and Stateflow are used as a simulation tool. The original simulation model was provided by Frida Gunnarsson. We have also made some adjustments and rewrite it into this model to make it more effectively.
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