同时，针对无线和移动网络技术的评价更富于挑战性，这是由于物理环境对于性能的重要影响而造成的。
At the same time, the evaluation of wireless and mobile networking technologies is challenging because of the significant impact that the physical environment has on performance.
无线和移动网络正被用于各种各样的应用情况，例如传感器网络、普适计算、中断容错网络以及车辆网络。
Wireless and mobile networks are being used in a wide variety of application contexts, such as sensor networks, pervasive computing, disruption tolerant networking, and vehicular networks.
因此，TCP协议以及下层协议在无线移动网络中应用时需要进行优化和改进。
Therefore, TCP and the underlayer protocols should be optimized and improved to be suit to the wireless mobile network.
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