CAJ | 학술논문

随着WiFi,3G网络和无线设备的普及,无线通信传输数据亮不断增加。对无线网络数据传输的性能要求也不断加大。TCP作为现今internet网络主要传输控制协议之一，在IP层基础上为应用层提供面向连接的、可靠的数据传输服务。 TCP在有线网络中已经证明可以取得良好的传输性能，然而在无线网络中(蜂窝网络、Ad hoc网络和卫星网络等)由于无线信道具有高衰减、高比特误码率的特点等因素导致TCP传输性能衰弱。目前国内外学者已经提出了各种不同的方法来提高无线网络中 TCP性能，本文着重讨论在蜂窝网络、wifi 网络下提升无线 TCP 性能的解决方案，对比标准 TCP协议，分析造成无线网络TCP性能下降的主要原因以及各无线网络TCP解决方案的性能。
수착WiFi,3G망락화무선설비적보급,무선통신전수수거량불단증가。대무선망락수거전수적성능요구야불단가대。TCP작위현금internet망락주요전수공제협의지일，재IP층기출상위응용층제공면향련접적、가고적수거전수복무。 TCP재유선망락중이경증명가이취득량호적전수성능，연이재무선망락중(봉와망락、Ad hoc망락화위성망락등)유우무선신도구유고쇠감、고비특오마솔적특점등인소도치TCP전수성능쇠약。목전국내외학자이경제출료각충불동적방법래제고무선망락중 TCP성능，본문착중토론재봉와망락、wifi 망락하제승무선 TCP 성능적해결방안，대비표준 TCP협의，분석조성무선망락TCP성능하강적주요원인이급각무선망락TCP해결방안적성능。
With the popularity of WiFi/3G network and wireless devices, wireless transmission is increasing. TCP is one of the core protocols of the Internet protocol suiteand provides a reliable data transmission service to the application layer. TCP has been optimized for wired networks. However, the Performance of TCP decrease in wireless network due to fad-ing, shadowing, hand off, and other radio effects, that cannot be considered congestion. This article focuses on the perfor-mance of wireless TCP in a cellular network and WiFi network, compared to standard TCP protocol, analyses the reason of TCP performance degradation in wireless network and introduces existing solutions that enhancing the performance of TCP wireless.