Patent ID: 7742396
Filing Date: 2010-06-22
Classification: H04W

Abstract:
1. An address management node, which manages a home address for a mobile node, comprising: a transmitter/receiver that communicates wirelessly with the mobile node; an address management section that manages a plurality of home addresses assigned to the mobile node; a home address selection condition acquisition section that acquires selection condition information that is referred to for selection of an appropriate home address that it is desirable the mobile node employs; a home address selection section that selects the appropriate home address from among the plurality of home addresses, based on the selection condition information obtained by the home address selection condition acquisition section; a home address notification section that notifies the mobile node, through the transmitter/receiver, of the appropriate home address selected by the home address selection section; and a failure detection section that detects a failure related to a communication by the mobile node, and for determining the need for the mobile node to change the appropriate home address to be set as a source address in a packet that is to be transmitted, wherein, in a case in which the failure detection section determines that a change in the appropriate home address is required, the home address selection condition acquisition section obtains new selection condition information, the home address selection section newly selects an appropriate home address, and the home address notification section notifies the mobile node, through the transmitter/receiver, of the appropriate home address that has been newly selected by the home address selection section for a case wherein a change in the appropriate home address is required.