US 7,321,577 B2 | ||
Mobility management system by distributed mobile IP | ||
Keiichi Shimizu, Tokyo (Japan); and Masatsugu Yano, Tokyo (Japan) | ||
Assigned to Mitsubishi Denki Kabushiki Kaisha, Tokyo (Japan) | ||
Appl. No. 10/492,849 PCT Filed May 15, 2003, PCT No. PCT/JP03/06073 § 371(c)(1), (2), (4) Date Apr. 16, 2004, PCT Pub. No. WO2004/025908, PCT Pub. Date Mar. 25, 2004. |
||
Claims priority of application No. 2002-267786 (JP), filed on Sep. 13, 2002. | ||
Prior Publication US 2004/0252653 A1, Dec. 16, 2004 | ||
Int. Cl. H04Q 7/24 (2006.01) |
U.S. Cl. 370—338 [370/401; 709/217; 709/238] | 16 Claims |
1. A mobility management system using a distributed Mobile IP, in a Mobile IP network which allows a mobile node while moving
to hold a current communication session, comprising:
a foreign agent control server that is located in a first subnet where the mobile node is located, performs Mobile IP signaling;
a first IP tunnel router that is located in, the first subnet, and performs IP tunnel transfer;
a home agent control server that is located in a second subnet where the mobile node is located, and performs Mobile IP signaling;
and
a second IP tunnel router that is located in the second subnet, and performs IP tunnel transfer, wherein
the foreign agent control server and the first IP tunnel router constitute a virtual foreign agent, and
the home agent control server and the second IP tunnel router constitute a virtual home agent.
|