RADIO AD HOC COMMUNICATION SYSTEM, TERMINAL, ATTRIBUTE CERTIFICATE ISSUE PROPOSING AND REQUESTING METHOD AT TERMINAL, AND PROGRAM FOR IMPLEMENTATION THEREOF

摘要

PROBLEM TO BE SOLVED: To autonomously carry out the issue of an attribute certificate in a distributed radio ad hoc communication system.;SOLUTION: A terminal B200 transmits a beacon 2011 to log on a network of a radio ad hoc communication system. In the beacon 2011, whether the terminal B200 has an attribute certificate or not is indicated. A terminal A100 which has received the beacon 2011 checks the beacon. When it is determined that the terminal B200 does not have the attribute certificate, the terminal A100 transmits an attribute certificate issue proposing message 1032 to the terminal B200 for requesting the issue of an attribute certificate. In response to this, the terminal B200 transmits an attribute certificate issue requesting message 2041. Then, the terminal A100 transmits an attribute certificate issuing message 1052 to the terminal B200.;COPYRIGHT: (C)2004,JPO&NCIPI