Charles E Perkins

US Patent:

6930988, Aug 16, 2005

Filed:

Oct 28, 2002

Appl. No.:

10/282926

Inventors:

Rajeev Koodli - Sunnyvale CA, US
Charles E. Perkins - Saratoga CA, US

Assignee:

Nokia Corporation - Espoo

International Classification:

H04Q007/00
H04B007/00
H04L012/56
H04L012/28

US Classification:

370331, 3703102, 370392, 370469

Abstract:

An apparatus, system, and method are directed to managing connectivity in a network by expediting the ability of a mobile node to send Internet Protocol (IP) packets subsequent to a handover. The mobile node is configured to determine an unconfirmed address for use on an access router. Upon establishing a link-layer connection, and before establishing a network-layer connection with the access router, the mobile node employs the unconfirmed address to send an IP packet to the access router. Employing the unconfirmed address prior to network-layer connectivity enables the reduction of handover latencies. If the access router determines that the unconfirmed address conflicts with an existing address, the access router provides a message to the mobile node indicating the conflict in addresses. In response to the message, the mobile node performs actions to resolve the address conflict.

US Patent:

7099326, Aug 29, 2006

Filed:

Feb 25, 2002

Appl. No.:

10/084003

Inventors:

Hannu Flinck - San Jose CA, US
Charles E. Perkins - Saratoga CA, US
Hossam Afifi - Paris, FR

Assignee:

Nokia Inc. - Irving TX

International Classification:

H04L 12/56

US Classification:

370392, 370465, 370469, 370328

Abstract:

A system and method for fast GPRS for IPv6 may improve data transfer efficiency in mobile networks, for example, in networks that relay on the GPRS infrastructure as defined and standardized in the European Telecommunications Standards Institute (ETSI), and on mobile IPv6 as standardized in the IETF. Mobile IPv6 techniques may be applied in the context of GPRS to transform mobility management into a routing problem, for example, by translating the routing area identifier into a part of the routing prefix in IPv6. Similar mobile IPv6 techniques also may provide an evolution path toward internetworking using native mobile IPv6.

US Patent:

7130286, Oct 31, 2006

Filed:

Oct 2, 2002

Appl. No.:

10/264285

Inventors:

Rajeev Koodli - Sunnyvale CA, US
Charles E. Perkins - Saratoga CA, US
Vijay Devarapalli - Santa Clara CA, US

Assignee:

Nokia Corporation - Espoo

International Classification:

H04Q 7/00

US Classification:

370331, 455436

Abstract:

A system and method is provided that enables the transfer of policy resource tokens (PRT) in the process of a handover of a mobile node in a wireless network. The system includes a granting agent that grants the PRT to a first access router to enable the mobile node to access network resources. In one embodiment, in the process of handing over the mobile node, the first access router provides the PRT to the second access router, thereby reducing data latency, and a disruption for an application executing on the mobile node. In another embodiment, the mobile node provides the PRT to the second access router after connectivity is established. A PRT data structure also is provided that includes a data field of profile types. A profile type describes context authorization information for granting access to a network resource.

US Patent:

7298847, Nov 20, 2007

Filed:

Feb 7, 2002

Appl. No.:

10/072663

Inventors:

Dongfeng Jing - Beijing, CN
Charles E. Perkins - Saratoga CA, US

Assignee:

Nokia Inc. - Irving TX

International Classification:

H04K 1/00
H04L 9/08
H04L 9/14

US Classification:

380247, 380248, 380278, 380270, 380279

Abstract:

A security key distribution and authentication protocol in AAA for Mobile IP has been described. In order to guarantee the secure protocol, messages between the MN, FA, AAAF, AAAH, and HA are encrypted and signed using public/private keys. IPSEC or PKI infrastructure is not required to support the AAA secure key distribution. This protocol enhances the security, flexible, scalability of AAA, and aids in protecting the Diffie-Hellman algorithm from man-in-the-middle attacks. Through this protocol, it is easy to set up a secure registration path in AAA for Mobile IP. This secure registration path provides a secretive and secure key distribution function for AAA.

US Patent:

7472269, Dec 30, 2008

Filed:

Feb 25, 2002

Appl. No.:

10/083448

Inventors:

Charles E. Perkins - Saratoga CA, US
Hossam Afifi - Evry, FR

Assignee:

Nokia Siemens Networks Oy - Espoo

International Classification:

H04L 9/32

US Classification:

713155, 380258, 726 4

Abstract:

A system and method for strong authentication achieved in a single round trip is disclosed, which reduces the amount of time needed for a mobile node to be authenticated by the network. In an embodiment of the present invention, the, authentication time is approximately three times faster than for 3GPP.

US Patent:

7515561, Apr 7, 2009

Filed:

Nov 12, 2002

Appl. No.:

10/293952

Inventors:

Rajeev Koodli - Sunnyvale CA, US
Charles E. Perkins - Saratoga CA, US

Assignee:

Nokia Corporation - Espoo

International Classification:

H04Q 7/20
H04Q 7/38

US Classification:

370331, 370338, 370351, 455437

Abstract:

A system and method for discovering capabilities of a network interface prior to a handover. The mobile node detects a beacon with a radio interface identifier that identifies a new access router (NR). Using the radio interface identifier, the mobile node obtains interface information on the NR through a current access router (CR). The interface information identifies the capabilities of the NR.

US Patent:

7793098, Sep 7, 2010

Filed:

May 20, 2003

Appl. No.:

10/443125

Inventors:

Charles E. Perkins - Saratoga CA, US
Rajeev Koodli - Sunnyvale CA, US
Vijay Devarapalli - Santa Clara CA, US
Hannu Flinck - Helsinki, FI

Assignee:

Nokia Corporation - Espoo

International Classification:

H04L 29/06

US Classification:

713160

Abstract:

The present invention provides location privacy against third parties while allowing route-optimized communication between the correspondent node and the mobile node. The mobile node's home address is hidden from an external observer thereby thwarting traffic analysis based attacks where a Home Address is correlated with a Care of Address of a mobile node (MN). A “privacy label” is used in place of a home address associated with the mobile node. The privacy label is supplied by the mobile node to the correspondent node in a way that that allows the privacy label to be bound to the home address, but does not allow the home address to be visible during the exchange. The privacy label may be also used to help prevent against replay attacks.

US Patent:

7995533, Aug 9, 2011

Filed:

Jul 14, 2000

Appl. No.:

09/616221

Inventors:

Rajeev Koodli - Sunnyvale CA, US
Charles E. Perkins - Saratoga CA, US
Manish Tiwari - West Lafayette IN, US

Assignee:

Spyder Navigations L.L.C. - Wilmington DE

International Classification:

H04Q 7/00

US Classification:

370331

Abstract:

A system and method for efficient state transfer in mobile networks provides improved performance by providing seamless transfer of updated reference state information across network access points during mobile node hand-off. This state transfer processing may be used in an Internet Protocol (IP) network and may include seamless transfer of header compression state.