CAJ | 학술논문

针对移动互联网环境下，基于TCP的文件传输软件效率较低的问题，设计并实现了基于RS（Reed-Solomon）编码的文件传输软件。该软件基于UDP协议，利用RS编码的特性实现文件分块传输的前向纠错，可容忍一定范围内的数据丢失，无需重传，可有效减少交互开销，对超出纠错范围的分片数据，利用重传机制，保证可靠传输。实验结果表明，在高误码率，大时延情况下，该软件的传输性能（成功率、传输速率）相对传统的文件传输软件显著提升。
침대이동호련망배경하，기우TCP적문건전수연건효솔교저적문제，설계병실현료기우RS（Reed-Solomon）편마적문건전수연건。해연건기우UDP협의，이용RS편마적특성실현문건분괴전수적전향규착，가용인일정범위내적수거주실，무수중전，가유효감소교호개소，대초출규착범위적분편수거，이용중전궤제，보증가고전수。실험결과표명，재고오마솔，대시연정황하，해연건적전수성능（성공솔、전수속솔）상대전통적문건전수연건현저제승。
In view of the low efficiency of file transfer software based on TCP in mobile internet environment, a new file transfer software based on RS(Reed-Solomon) code was designed and implemented. The software is based on UPD protocol and it takes advantage of RS code to achieve FEC(forward error correction) of file block transfer. This characteristic can make the software to tolerate a range of block loss and no need to repeat, so it can reduce the communication overhead effectively. For the data which exceeds the error correction range, the retransmission mechanism is used to ensure the reliable transmission. The result of experi-ment shows that, under the condition of high error rate and long time delay, the transfer performance of the software(success rate, transfer speed)is significantly better than traditional file transfer software.