| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To increase transmission efficiency by appropriately selecting a TCP protocol and a UDP protocol in the case of transferring prefetched WEB information between a prefetch proxy server and an information storage server. <P>SOLUTION: A transmission delay time is periodically measured between a prefetch proxy server and an information storage server, and when the measured transmission delay time is equal to or less than a fixed time, a TCP protocol is used, and when the measured transmission delay time exceeds the fixed time, Web information prefetched by using a UDP protocol is transmitted to the information storage server. Also, the prefetch proxy server retransmits the packet of a sequence number whose retransmission is requested from the information storage server by using the TCP protocol. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
