Ntt Docomo, Inc.

Docomo Communications Laboratories Usa, Inc.

Shahid Shoaib

Nayeem Islam

Fujio Watanabe

Shoji Kurakake

Jingjun Cao

In one aspect of the invention, a method for load balancing an application among a plurality of computing devices coupled with at least one access network for communication between the devices is provided. The method comprises storing the application on a server device coupled with the access network. The method also comprises measuring a set of application attributes associated with the application, including at least one performance attribute for characterizing a user perceived performance of the application. The method further comprises issuing a request, from a client device coupled with the access network, for the application. Additionally, the method comprises provisioning execution of the application on the client or server device in response to the request based on the set of application attributes. The method further comprises executing the application on the client or server device in response to provisioning the execution of the application.

Method and system for application load balancing

In one aspect of the invention, a method of dynamically switching among a plurality of fault tolerance schemes is provided. The fault tolerance schemes are associated with a fault tolerance mechanism that executes in a distributed system. The method comprises obtaining a wait time of at least one user interface event occurring in the distributed system. The wait time includes at least one of a communications time, a service time and a fault tolerance time. The method further comprises determining whether a mean of the wait time is greater than a predetermined mean wait time threshold. The method also comprises determining whether the communications time, the service time and the fault tolerance time are mutually independent when the mean of the wait time is greater than the predetermined mean wait time threshold. In addition, the method comprises determining whether the mean of the wait time can be improved by reducing a mean of the fault tolerance time when the communications time, the service time and the fault tolerance time are mutually independent. The method also comprises switching from a first fault tolerance scheme to a second fault tolerance scheme when the wait time can be improved by reducing the mean of the fault tolerance time.

Method for dynamically switching fault tolerance schemes

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

In one aspect of the invention, a configurable reliable messaging system is provided. The configurable reliable messaging system comprises a communication subsystem capable of configurably transmitting and receiving a message across a network using at least one of a plurality of network links, a plurality of internet protocols and a plurality of transport protocols. The configurable reliable messaging system also comprises a reliability subsystem capable of configurably logging the message, detecting a plurality of failures, notifying a remote entity interconnected with the configurable reliable messaging system via the network of the plurality of failures, and recovering from the plurality of failures. In addition, the configurable reliable messaging system comprises a control module capable of configuring the communication subsystem and the reliability subsystem based on a set of input parameters.

Configurable reliable messaging system

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.

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San Jose, CA, United States of America

Shahid Shoaib