MOBILE IP MULTICAST METHOD, HOME AGENT, MOBILITY ANCHOR POINT, AND MOBILE IP MULTICAST PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a Mobile IP multicast method whereby a multicast packet addressed to a home network can be transferred to a terminal in an in-zone destination via the Internet by using a Mobile IPv6 technology.

SOLUTION: Upon the receipt of a participation statement packet including a multicast address from a mobile terminal 130, a home agent 110 stores a cross-reference between a care of address and the multicast address of the mobile terminal existing in the participation statement packet to a group management table 113. When first receiving the participation statement to the multicast address from any mobile terminal, the home agent 110 transmits the participation statement packet leading to the multicast address to a multicast router 140, and when receiving the multicast packet from the multicast router 140, the home agent 110 searches the care of address of the mobile terminal corresponding to the multicast address of the multicast packet, capsulates the multicast packet with an IP address addressed to the care of address and transfers the resulting packet to the mobile terminal.

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