Patent ID: 7496071
Filing Date: 2009-02-24
Classification: H04L,H04W

Abstract:
1. A Mobile Node device connected via a network to a home agent server along with other Mobile Node devices, said device having a memory storing programs for applications, and application identifiers each identifying the corresponding one of the applications, and an interface configured to transmit to said home agent server one of the application identifiers as well as a care-of-address of the Mobile Node device according to Mobile IP, wherein a plurality of care-of-addresses, each of which is associated with an identical home address and a different application identifier, are respectively transmitted from said Mobile Node device and other Mobile Node devices to the home agent server and stored therein, and wherein said Mobile Node device sends a packet destined for one of the other Mobile Node devices to said home agent server, said home agent server selects one of said care-of-addresses which is stored therein and associated with an application identifier identical with an application identifier recorded in said packet, encapsulates the received packet with said selected care-of-address, and transmits the encapsulated packet to said one of the other Mobile Node devices corresponding to said selected care-of-address.