CAJ | 학술논문

为了提高高速长时延网络的传输效率，提出一种基于TCP的自适应压缩方案，当应用数据到达传输层时用该方案对其进行压缩，方案能根据数据特性自适应选择是否压缩当前数据，并可对下一部分数据的压缩比进行估计。针对TCP自适应压缩方案的性能，给出分组数、压缩效率和传输时间三个评价指标。在真实网络环境中的实验结果显示，对于文本文件的传输比目前的TCP协议提高约56％的传输性能。对于压缩率比较低的视频和混合文件，该方案的性能略有改善。
위료제고고속장시연망락적전수효솔，제출일충기우TCP적자괄응압축방안，당응용수거도체전수층시용해방안대기진행압축，방안능근거수거특성자괄응선택시부압축당전수거，병가대하일부분수거적압축비진행고계。침대TCP자괄응압축방안적성능，급출분조수、압축효솔화전수시간삼개평개지표。재진실망락배경중적실험결과현시，대우문본문건적전수비목전적TCP협의제고약56％적전수성능。대우압축솔비교저적시빈화혼합문건，해방안적성능략유개선。
In order to improve the transmission efficiency of high-speed and long delay networks , we present a TCP-based adaptive compression scheme, which compresses the application data when it arrives on the transport layer and adaptively decides if the current data is to be compressed according to the data features .Meanwhile, it also provides estimation on the compression ratios of following data .According to the performance of TCP-based adaptive compression scheme , we give three evaluation indexes: the group number , the compression efficiency and transmission time .The experimental results in real network environment show that this method can improve the transmission performance of the text file by 56%compared with the original TCP , while for video and mixed files with relatively low compression rate , its transmission performance is slightly improved as well .