Patent ID: 7933241
Filing Date: 2011-04-26
Classification: H04L,H04W

Abstract:
1. A communication method for using bandwidth efficiently in Internet Protocol version 6 (IPv6), the method comprising: (a) when a mobile node transmits a packet to a correspondent node, sending a binding update message to the correspondent node, the binding update message showing whether a home address option of a destination option header is omitted; (b) when the correspondent node that receives the binding update message receives a packet, in which the home address option is omitted, from the mobile node, sending a binding acknowledge message to the mobile node, the binding acknowledge message showing whether a source address of an IPv6 basic header of the packet can be restored as home address of the mobile node; (c) changing a source address of a packet that is to be sent by the mobile node into a care-of-address of the mobile node and sending the care-of-address to the correspondent node; and (d) the correspondent node which receives the packet restoring the source address of the packet as the home address of the mobile node.