| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a delay time measurement apparatus for measuring a delay time in units of nodes with a small load. <P>SOLUTION: The delay time measurement apparatus includes: a path information storing section for storing path information indicating connection paths between a server and a plurality of terminal devices; a core node specifying section for specifying a core node; an acquiring section for acquiring packets between the server and the plurality of terminal devices; a first delay time calculating section for calculating a first delay time of packet transmission between the server and the plurality of terminal devices respectively for each connection path based on the acquired packets; a sending section for sending an active packet to the core node; a receiving section for receiving a response from the core node; a second delay time calculating section for calculating a second delay time of packet transmission between the server and the core node based on the response; and a third delay time calculating section for calculating a third delay time of packet transmission between the server and the plurality of relay nodes based on the first delay time, the second delay time, and the path information. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
