COMMUNICATION SYSTEM, SERVER DEVICE, INFORMATION REPORT METHOD, AND PROGRAM

摘要

Provided is a communication system including a terminal, a first server device which manages movement of the terminal, and a second  server device which performs authentication of the terminal.  Here, the first server device transmits a first message containing pseudo-NAI of the terminal to the second server device by using the AAA protocol.  Moreover, the second server device correlates the pseudo-NAI with a true NAI of the terminal for recording.  Upon reception of the first message from the first server device, the second server device transmits a second message containing the true NAI correlated with the pseudo-NAI contained in the first massage, to the first server device by using the AAA protocol.