1
Charles E Perkins: Network address management for a wired network supporting wireless communication to a plurality of mobile users. International Business Machines Corporation, Perman & Green, October 27, 1992: US05159592 (563 worldwide citation)

Apparatus and method for managing bidirectional transmission of information between a wired network and at least one mobile communication unit (10) in wireless communication with the wired network. The wired network is of the type wherein users of the network are each assigned a unique network addre ...


2
Charles E Perkins: Highly dynamic destination-sequenced destination vector routing for mobile computers. International Business Machines Corporation, Douglas Cameron, Whitham Curtis Whitham & McGinn, May 2, 1995: US05412654 (324 worldwide citation)

Packets are transmitted between stations of an ad-hoc network of mobile stations by using routing tables which are stored at each station of the network. Routing information is broadcast or multicast according to three schedules; upon demand to show new routes, periodically to show recently changed ...


3
Charles E Perkins, Jacob Y Rekhter: Shortcut network layer routing for mobile hosts. International Business Machines Corporation, Perman & Green, August 15, 1995: US05442633 (221 worldwide citation)

A method for routing a packet of information between two hosts that are coupled to a network. Each of the hosts have a unique network address, and at least one of the hosts is a mobile host (10) that does not have a fixed network coupling location. The method includes a first step of (a) transmittin ...


4
Murray C Baker, Roger Y M Cheung, Charles E Perkins, Peter E Reissner: Access point for mobile wireless network node. International Business Machines Corporation, Joscelyn G Cockburn, August 5, 1997: US05654959 (118 worldwide citation)

An internetworking node for providing internetworking services for mobile wireless nodes is disclosed. Each mobile wireless node is associated with at the most one internetworking node. Each mobile wireless node selects which internetworking node it will associate with. The internetworking node will ...


5
Rajeev Koodli, Charles E Perkins, Vijay Devarapalli: System and method for resource authorizations during handovers. Nokia Corporation, Darby & Darby P C, Jamie L Wiegand, October 31, 2006: US07130286 (25 worldwide citation)

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 o ...


6
Rajeev Koodli, Charles E Perkins: Method and system for fast IP connectivity in a mobile network. Nokia Corporation, Darby & Darby P C, Jamie L Wiegand, August 16, 2005: US06930988 (24 worldwide citation)

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 establis ...


7
Dongfeng Jing, Charles E Perkins: Secure key distribution protocol in AAA for mobile IP. Nokia, Brake Hughes Bellermann, November 20, 2007: US07298847 (22 worldwide citation)

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 A ...


8
Rajeev Koodli, Charles E Perkins: System and method for discovering network interface capabilities. Nokia Corporation, Squire Sanders & Dempsey, April 7, 2009: US07515561 (14 worldwide citation)

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 thro ...


9
Basavaraj Patil, Charles E Perkins: Method and system for securing mobile IPv6 home address option using ingress filtering. Nokia Corporation, Darby & Darby P C, Thomas R Marquis, December 6, 2005: US06973086 (14 worldwide citation)

The invention provides for disabling communication at the access router on a visited network that supports mobile IP v6 and the home address destination option. Until a home agent or a correspondent node authenticates the home IP address of the mobile node and the access router verifies this address ...


10
Herbert S Weiner, William L Mills, Charles E Perkins, Chi Leung Lau, Jeffrey P Mayhew, Samuel Y Gordon: Method and apparatus for creating a structured image data set based on acquired image data. Tektronix, Daniel J Bedell, Francis I Gray, Robert S Hulse, November 25, 1986: US04625288 (14 worldwide citation)

A method of structuring vectorized data obtained by scanning a drawing or other document comprising the steps of displaying on a computer controlled display screen a template image comprising template lines and nodes corresponding to the acquired image data and selecting portions of the acquired ima ...