| Patent Number |
Title Of Patent |
Date Issued |
| 7342914 |
Generalized link layer address extension |
March 11, 2008 |
| The present invention supports a generalized link-layer address extension for an information packet transmission on an IP mobility system. In the invention, a link-layer address for a node can be communicated in any information packet rather than confined to a specialized message format. |
| 7333451 |
Buffer management for mobile internet protocol |
February 19, 2008 |
| Disclosed is a buffer management method for a mobile node in a mobile IP telecommunication network. The buffer management method supports a handoff of the mobile node from a first agent of a first network to a second agent of a second network. The method begins upon initiation of the |
| 7218634 |
Assisted power-up and hand-off system and method |
May 15, 2007 |
| The invention provides for an improved method and system of registration and hand-off procedures for a mobile node in a packet-based communication network. The present invention obtains expanded addresses over past systems. The invention can also use serving mobility managers to obtain a |
| 7177952 |
Method and system for switching between two network access technologies without interrupting act |
February 13, 2007 |
| A system and method is provided for seamlessly switching between different network access technologies without interrupting active network applications or sessions. A Network Access Arbitrator (NAA), which contains a virtual network adapter driver, resides between a Data Link Layer a |
| 7174018 |
Security framework for an IP mobility system using variable-based security associations and brok |
February 6, 2007 |
| In an IP-based mobile communications system, the Mobile Node changes its point of attachment to the network while maintaining network connectivity. Security concerns arise in the mobile system because authorized users are subject to the following forms of attack: (1) session stealing |
| 7173917 |
Unicast agent advertisement based on layer 2 and layer 3 motion detection |
February 6, 2007 |
| An improved wireless mobile IP system including an apparatus and method for managing transmission of information. Agent advertisements are used to detect movement of the mobile node and derive care-of addressing information for the Home Agent. Foreign Agents and Home Agents currently |
| 7110375 |
Virtual private network identification extension |
September 19, 2006 |
| The present invention supports a virtual private network identifier for an information packet transmission on an IP mobility system. By identifying a virtual private network in this manner, the Foreign Agent will be able to properly route data packets even if two or more Mobile Nodes are |
| 7079499 |
Internet protocol mobility architecture framework |
July 18, 2006 |
| A communications architecture for enabling IP-based mobile communications includes a Local Service Function (LSF) component configured to serve as an IP-based serving area network for a set of x-Access Networks, and a Network Service Function (NSF) component configured to serve as an |
| 6922404 |
Mobile IP extensions rationalization (MIER) |
July 26, 2005 |
| A new extensions structure for mobile IP control message extensions is employed to conserve the type field. Certain types of extensions, such as network access identifiers, are initially aggregated and subtypes are employed to identify the precise content of the extension (e.g., mobile |
| 6819652 |
Method and apparatus for processing control messages in a communications system |
November 16, 2004 |
| A method and apparatus in a communications system for processing control messages for a session in a packet-based network within the communications system. A first indicator is set in a control message for handling a session within the communications system through the packet-based netwo |
| 6769000 |
Unified directory services architecture for an IP mobility architecture framework |
July 27, 2004 |
| A communications architecture for enabling IP-based mobile communications includes a Local Service Function (LSF) component configured to serve as an IP-based serving area network for a set of x-Access Networks, and a Network Service Function (NSF) component configured to serve as an |
| 6711147 |
Merged packet service and mobile internet protocol |
March 23, 2004 |
| A network, system and method for merging a packet service such as GPRS with a mobile IP is disclosed. The GPRS network includes a first base station for providing wireless access to a mobile node, a GPRS support node (GSN) connected to the base station, and a security gateway for connect |
| 6574214 |
Reduced overhead tunneling techniques in a communications network having mobile foreign agents |
June 3, 2003 |
| In a mobile communication system having mobile foreign agents, the present invention eliminates the use of multiple source/destination headers attached to an information packet during the tunneling operation by using either a decapsulation/encapsulation or a forwarding operation with the |
| 6219547 |
System and method for routing in a cellular digital packet data network |
April 17, 2001 |
| Routing of data in a mobile radiotelephone system to an intended recipient roaming mobile end station (M-ES) is facilitated by determining if the M-ES is within the same geographic area of the originating data source. If the M-ES is within the same geographic area as verified by interrog |
