Telcordia Technologies, Inc.

Toshiba America Research, Inc.

Kabushiki Kaisha Toshiba

Kddi Corporation

The University of Texas System

Other

Tti Inventions C LLC

Nytell Software LLC

Subir Das

Ashutosh Dutta

Yoshihiro Oba

Yoshihiro Ohba

Hidetoshi Yokota

Tsunehiko Chiba

Dana Chee

Akira Idoue

Kenichi Taniuchi

Abhrajit Ghosh

Kyriakos Manousakis

Yuu-Heng Alice Cheng

Anthony McAuley

Tao Zhang

Prathima Agrawal

David Famolari

Archan Misra

Sunil H Madhani

Shinichi Baba

Stephanie Demers

Shih-wei Li

James Daniel Alfieri

Sajal K Das

Raquel Morera

Raquel Morera Sempere

Donald R Lukacs

Funchun Joseph Lin

David C Shrader

Bryan J Lyles

Praveen Gopalakrishnan

John Lee

Joe Lin

Mitsuru Kanda

Farooq M Anjum

Latha Kant

Byungsuk Kim

Miriam Tauil

Fuchun Joseph Lin

Yasuro Shobatake

Fuchun Joe Lin

Fuchun Joesph Lin

Christian Makaya

Yashuhiro Katsube

Kenich Taniuchi

Tsumehiko Chiba

Funchun Joe Lin

Satoshi Komorita

Ming Lai

Yuu-Heng Cheng

Shih-Wei Li

Brian J Lyles

James D Alfieri

A method of employing an encoding scheme for media independent handover, comprising: having at least some data type carry only required information to determine the end of data without a length value.

Data type encoding for media independent handover

A self-organizing IP multimedia subsystem exhibiting node splitting and node merging functions wherein any node within the self organizing IP multimedia subsystem may assume any role thereby providing node balancing and fault tolerance to an overall network.

Self organizing IP multimedia subsystem

A mechanism by which handoff delay can be minimized while not compromising the IMS/MMD security and also protecting the media if required by certain applications is presented. Methods for mitigating delay during SA re-association and mitigating the IPSec tunnel overhead for signaling and media at the Mobile Node are given. In one embodiment, SA keys can be transferred from the old P-CSCF to new P-CSCF, enabling the establishment of SAs before Mobile Node physically moves to the new subnet in a network. Proactive handover is used. In another embodiment, SA keys are transferred from S-CSCF to new P-CSCF. In this case, the SA keys are transferred to the new P-CSCF by S-CSCF through a context transfer mechanism well in advance so that SAs may be established before Mobile Node physically moves to new subnet. In another embodiment, methods for mitigating IPSec tunnel overhead are presented.

Security optimization for IMS/MMD architecture

A mechanism by which handoff delay can be minimized while not compromising the IMS/MMD security and also protecting the media if required by certain applications is presented. One proactive method includes proactive authentication. Another proactive method includes proactive security association, such as transferring SA keys from old proxy to new proxy, or transferring keys through serving signal entities. Reactive methods include transferring SA keys from old proxy to new proxy, using either push or pull technology. Other reactive methods include transferring keys through serving signal entities using either push or pull technology.

P-CSCF fast handoff for IMS/MMS architecture

A mobile device includes: multiple interfaces that are configured to support a various access technology such as 3G or Wi-Fi etc. A public land mobile network (PLMN) selector that generates a list for each of the PLMN networks that provide coverage to the mobile device. A PLMN selection policy parameter that is set to True or False to allow or prohibit the selection of PLMN networks by the mobile device based on the generated list where the generated list includes information as to different access technologies and selection priorities supported on the PLMN access networks providing coverage to the mobile device. In particular, when the PLMN selection policy parameter is set to True, multiple PLMN registrations are allowed; and when the A PLMN selection policy parameter is set to False, multiple PLMN registrations are prohibited.

PLMN selection and inter-system mobility policy conflict resolution for multi-interface user

In some of the preferred embodiments, a method for network discovery of a mobile device to use at least one of a plurality of access networks within an IP network includes: obtaining specified network information in the vicinity of a given location based on a set of criteria when a mobile is connected to the IP network from any location.

Network discovery mechanisms

According to some embodiments, a key management apparatus for deploying in a smart grid system adapted to receive metering data from smart meters connected to at least one relay via a network, includes: a key control mechanism that derives a key array of individual purpose specific keys from one master key such that the purpose specific key in the key array are each independent cryptographic keys for each specific usage in an application or for each application if there is only one specific usage in an application.

Key management device, system and method having a rekey mechanism

A solution framework is employed that includes defining of a mechanism to run multiple queries in a single message exchange, along with a priority on a per-query basis. In some embodiments, a system for facilitating handover of a mobile device across heterogeneous access networks by ensuring response to queries transmitted by the mobile device includes: a) a mobile device having a plurality of wireless network interfaces for communicating over a plurality of heterogeneous access networks, having a media independent handover (MIH) entity to facilitate handovers between the heterogeneous networks, and configured to transmit queries related to handover operation between the heterogeneous access networks to MIH entities within said heterogeneous access networks; and b) said media independent handover entity of said mobile device being configured to transmit multiple queries in a single message exchange to an MIH entity in an access network with prioritization among said multiple queries.

Prioritized query

The preferred embodiments involve a mechanism to bootstrap Kerberos from EAP in which EAP is used for initial network access authentication and Kerberos is used for provisioning session keys to multiple different protocols. The preferred embodiments make use of an EAP extension method (EAP-EXT) to realize the mechanism.

Bootstrapping kerberos from EAP (BKE)

A packet data network gateway device may receive packet network data at a packet data network gateway device; filter the received packet network data to extract information associated with one or more messages in the packet network data; analyze the extracted information; and dynamically determine one or more of policy updates, rules, or thresholds based on the analyzing of the information and information associated with one or more of subscribers, location, existing policies, network operating condition and load.

Mobility policy updates for mobile devices

A system and method for route optimization in PMIP having a first mobile node having a local mobility anchor and anchored at an access router and a second mobile node anchored at an access router is presented. The method includes establishing a binding cache at one access router comprising a mapping of mobile node addresses to access router addresses, populating the binding cache, and updating the mapping of the mobile node addresses in response to a handoff of a mobile node from one access router to another access router, so that a packet is transmitted from the first mobile node to the second mobile node using the mapping in the binding cache. The second access router address is obtained by either transmitting the packet from the first mobile node to the local mobility anchor, or querying neighboring access routers, or broadcasting access router addresses from the local mobility anchor.

Proxy mobile IP

A system and method for mobility support of a mobile node having a home network in a heterogeneous roaming environment is presented. The method comprises the steps of authenticating the mobile node in a visited network and obtaining an address for the mobile node in the visited network, establishing a security connection between a functional component in the visited network and an agent in the home network, creating a home address for the mobile node, and using the home address to generate a SIP signaling address, a SIP media address, and a non-SIP media address, such that SIP non-media is transmitted using the security connection to the SIP signaling address, SIP media is transmitted using the security connection to the SIP media address, and non-SIP media is transmitted using the security connection to the non-SIP media address.

Flexible mobility framework for heterogeneous roaming in next generation wireless networks

A system and method for network selection procedures for simultaneous network connectivity through multiple accesses comprises obtaining stored and registered PLMNs, determining whether PLMNs are both stored PLMN for access technology type Ai and registered PLMN, when no PLMNs are both, performing PLMN selection using a standard procedure, when only one PLMN is both, determining whether the PLMN satisfies a condition, and when the PLMN satisfies the condition, attempting to connect to the PLMN, and when more than one PLMN is both, creating a set of PLMNs, selecting one PLMN that satisfies the condition, from the set PLMN, attempting to connect to the selected PLMN, and when attempting to connect fails, removing the selected PLMN from the set, and selecting another PLMN. In one aspect, the PLMN that minimizes changes is selected. In one aspect, the PLMN that provides access to a larger number of access technologies is selected.

Public land mobile network selection procedures for simultaneous network connectivity through multiple accesses

This document describes an EAP method used for extending EAP functionality. The extended functionality includes channel binding and re-authentication. The EAP method also allows sequencing of multiple EAP methods inside it.

EAP method for EAP extension (EAP-EXT)

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Kendall Park, NJ, United States of America

Subir Das