COMMUNICATION MANAGEMENT PROCEDURE, COMMUNICATION KNOWLEDGE AND MOBILE KNOWLEDGE

摘要

Disclosed is a technique which, when an MN (mobile node) has one or a plurality of HoAs (home addresses) and a packet is transmitted from a CN (correspondent node) through an HA (home agent) to the MN, reduces a delay stemming from registration processing on binding information or selection processing among the plurality of HoAs and a delay of communication due to a result of the selection. According to this technique, an MN 100 notifies, to the CN, home network connection information indicative of whether or not it is currently in connection with a home network which has allocated its own plurality of HoAs, an address of each HA and an ID of each HA in a state associated with the plurality of HoAs. On the basis of the information received from the MN, an CN 150 grasps the home network with which the MN is currently in connection and makes an inquiry about the condition of the HA and sets an appropriate HoA, judged on the basis of the grasping result or the inquiry result, as a destination address of a packet to be transmitted to the MN.