Virtual home agent service using software-replicated home agents

• US 6,560,217 B1
• Filed: 02/25/1999
• Issued: 05/06/2003
• Est. Priority Date: 02/25/1999
• Status: Expired due to Term

• Current Assignee: UTStarcom Incorporated (UTStarcom Holdings Corp.)
• Original Assignee: 3Com Corporation (HP Inc.)
• Inventors: Dynarski, Richard J., Xu, Yingchun, Harper, Matthew, Mortsolf, Timothy G., Peirce, Kenneth L. Jr.
• Primary Examiner(s): Olms, Douglas
• Assistant Examiner(s): Pizarro, Ricardo M.
• Application Number:
  US09/248,617
• Time in Patent Office: 1,531 Days
• Field of Search: 370/351, 370/352, 370/356, 370/401, 370/402, 370/466, 370/468, 370/522, 370/524, 370/410, 370/229, 370/230, 709/229, 709/225, 709/224, 709/250
• US Class Current: 370/351
• CPC Class Codes: H04L 45/58 Association of routers
• CPC Class Codes: H04L 63/0272 Virtual private networks
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 8/06 Registration at serving network Location Register, VLR or user mobility server
• CPC Class Codes: H04W 8/12 between location registers or mobility servers
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

Multiple home agents for a home agent service provider network are implemented in a single computing platform in software as multiple virtual home agents. Each home agent is assigned or dedicated to a single virtual private network. Any number of home agents can be realized in the computing platform by multiple instantiations of a home agent program or code, and by providing unique IP addresses for each instantiation. Each home agent runs independently, and is independently configured and managed by the subscriber of the virtual private network service, freeing the service provider of having to manage and supervise low level processing tasks and customization features that the subscribers may want. In a representative embodiment, the computing platform comprises a router having a general purpose-computing platform.

Claims

1. A method of handing a registration request from a mobile communications device, comprising the steps of:

providing a master home agent in a communications chassis, said master home agent comprising a plurality of software-replicated home agents;

receiving a registration request from said mobile communications device at said communications chassis and forwarding said registration request to one of a plurality of software-replicated home agents in said communications chassis in accordance with an address in said registration request;

generating a registration request authentication message in said one of said plurality of software replicated home agents;

transmitting said registration request authentication message from said communications chassis to an accounting, authentication, and authorization (AAA) server;

receiving a reply to said registration authentication message from said AAA server at said one of said plurality of software-replicated home agents; and

forwarding a reply to said registration request message from said communications chassis to said mobile communications device.

2. The method of claim 1, wherein each of said home agents comprise an instantiation of a home agent software program implemented in said communications chassis.

3. The method of claim 1, wherein said communications chassis comprises a router.

4. The method of claim 1, wherein said communications chassis comprises a general purpose computer.

5. The communications chassis of claim 1, wherein each of said home agents are associated with a virtual private network.