| 摘要 |
There is disclosed a technique whereby, in a case wherein a mobile node (MN) performs a handover, between access points (APs) present on the links of different access routers (ARs), security is quickly established between the MN and the AP so as to reduce the possibility of a communication delay or disconnection due to the handover. According to this technique, before performing a handover, the MN 10 transmits, to an access router (nAR) 30 that is to be newly connected after the handover, a notification indicating an MAC address for the MN and a communication encryption/decryption key used with the AP 21 before the handover, and the nAR transmits a notification for this information to the AP 31, to which the MN is to be connected after the handover. Therefore, the MN can employ the communication encryption/decryption key used before the handover and communicate with the AP after the handover. Furthermore, by using a process associated with the FMIP, a notification indicating the MAC address of the MN and the communication encryption/decryption key can be transmitted to the nAR.
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