Ntt Docomo, Inc.

Jingjun Cao

Fujio Watanabe

Shoji Kurakake

Toshio Miki

Shahid Shoaib

One aspect of the present invention regards a method of coordinating the handoff of a mobile carrier between a first access network and a second access network, the method including handing off from a first access network that the mobile carrier is currently operating within to a second access network and building physical access network topology based on the handing off without input from either the first access network or the second access network.

Method and associated apparatus for increment accuracy of geographical foreign agent topology relation in heterogeneous access networks

A system and method for using subnet relations to determine paging areas, for performing authentication and association, and to activate access network interfaces in wireless communication devices in a heterogeneous access network. Paging areas are generated using subnet relations by determining mobility agent servers within a predetermined number of subnet relations from a last active mobility agent server. Authentication and association are also accomplished using subnet relations. Access network interfaces can also be turned on and off based on subnet relations thereby conserving battery power.

Using subnet relations for paging, authentication, association and to activate network interfaces in heterogeneous access networks

A system and method for monitoring subnet relations in a wireless communication system is disclosed. A wireless communication device is provided and is located in a first subnet. When the wireless communication device executes a handoff to a second subnet, a mobility agent server notifies a virtual operator server of the handoff. As a result of the handoff, a subnet relation is created between the first subnet and the second subnet that is stored and later used to control how the wireless communication device uses power by placing network interface systems that cannot be used in a power-saving mode.

Using subnet relations to conserve power in a wireless communication device

A network selection system that includes a mobile terminal in communication with a first network, a second network in communication with the first network and an application layer triggering mechanism that determines which one of a plurality of triggers is required in a certain set of circumstances to provide a particular application.

Context aware application level triggering mechanism for pre-authentication, service adaptation, pre-caching and handover in a heterogeneous network environment

A method of coordinating the handoff of a mobile carrier between a first access network and a second access network. The method including establishing a contract between a user of a mobile carrier and a hyper operator and attempting a hand off from a first access network that the mobile carrier is currently operating within to a second access network, wherein the attempting includes authenticating at the hyper operator only that the user may have access to the second access network via the contract. Handing off to the second access network if the authenticating is successful.

Method and associated apparatus for pre-authentication, preestablished virtual private network in heterogeneous access networks

One aspect of the present invention regards a method of coordinating the handoff of a mobile carrier between a first access network and a second access network, the method including handing off from a first access network that the mobile carrier is currently operating within to a second access network and building a physical access network topology based on the handing off without input from either the first access network or the second access network.

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Mountain View, CA, United States of America

Jingjun Cao