Patent ID: 6934274
Filing Date: 2005-08-23
Classification: H04L,H04W

Abstract:
1. A mobile computer device capable of carrying out communications while moving among inter-connected networks which includes a mobile computer management device provided at a home network of the mobile computer device for transferring packets destined to the mobile computer device to a current location of the mobile computer device, the mobile computer device comprising: a transmission unit configured to transmit a message for requesting not to allocate a dynamic address allocated to the mobile computer device at the home network to another computer for a prescribed period of time, to one of an address management server of the home network and the mobile computer management device; and a mobile communication unit configred to exchange messages with the mobile computer management device and carry out mobile communications using the dynamic address allocated to the mobile computer device at the home network, after the mobile computer device moved outside the home network, wherein said request message sent by the mobile computer device has a lease time set to be a time amount x and is periodically at a periodic time amount y, and wherein y is greater than or equal to x.