Patent ID: 7362729
Filing Date: 2008-04-22
Classification: H04L,H04W

Abstract:
1. A mobile node for transmitting a packet, comprising: means for buffering the packet within the mobile node during a hand-off period; and means for transmitting the buffered packet from the mobile node when the hand-off period is complete, wherein said means for transmitting includes means for determining a period during which the packet is buffered in the mobile node based on a connection status of a link layer of the mobile node, the period during which the packet is buffered in the mobile node is a period from a predetermined time before a beginning of a link layer disconnection period, during which the link layer of said mobile node is not connected to any links in order to switch connection points, to a point following an end of the link layer disconnection period, at which time an external router providing a newly connected link becomes a default external router, and said means for transmitting includes means for detecting the predetermined time before the beginning of the link layer disconnection period via a signal provided by a communications link interface module within the mobile node.