Importance

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Abstract

Deterioration of communication quality in mobile communication through an IP network caused by a shortage of transfer capacity in a home agent or a capacity shortage in an access channel is prevented, in a mobile IP network. The mobile IP network includes a home agent and a mobile node of which location is registered in the home agent, the home agent includes a storage unit for storing channel capacity information; a registration unit for deciding based on bandwidth information in a registration request transmitted from the mobile node, whether or not the requested registration is acceptable by referring to the channel capacity information stored in the storage unit; and a transfer unit for transferring to a care-of address a packet destined to the mobile node which is decided registrable by the registration unit.

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First Claim