Nortel Networks Corporation

Avaya Inc.

Microsoft Technology Licensing, LLC

Rockstar Consortium US LP

Rockstar Bidco, LP

Rpx Clearinghouse LLC

Franco Travostino

Indermohan S Monga

Bruce A Schofield

Tal Isaac Lavian

Phil Wang

Ramesh Durairaj

Thomas P Hardjono

Richard Brand

Rob Duncan

Inder Monga

Satish Raghunath

Stephen Samuel Jackson

Bradley Cain

Victor Firoiu

Robert Linwood Myers

Siva Subramanian

Schofield Bruce

Bruce Wallace

Victor Flrolu

Various embodiments allow Grid applications to access resources shared in communication network domains. Grid Proxy Architecture for Network Resources (GPAN) bridges Grid services serving user applications and network services controlling network devices through proxy functions. At times, GPAN employs distributed network service peers (NSP) in network domains to discover, negotiate and allocate network resources for Grid applications. An elected master NSP is the unique Grid node that runs GPAN and represents the whole network to share network resources to Grids without Grid involvement of network devices. GPAN provides the Grid Proxy service (GPS) to interface with Grid services and applications, and the Grid Delegation service (GDS) to interface with network services to utilize network resources. In some cases, resource-based XML messaging can be employed for the GPAN proxy communication.

Grid proxy architecture for network resources

A closed loop system is described for enhanced adaptive network capabilities in support of workflow missions. Multiple workflow-locked loops with different sampling rates are employed. A faster, lower loop is employed to gather data from the field and deal with network level exceptions such as faults, fades, and changing conditions. A slower, upper loop is employed to handle mission level exceptions. The result is a system capable of integrating management of multiple workflow missions, including reallocation of resources in response to changes in mission goal statements and network resource availability.

Workflow locked loops to enable adaptive networks to change a policy statement responsive to mission level exceptions and reconfigure the software-controllable network responsive to network level exceptions

A method and apparatus has been shown and described which allows Quality of Service to be controlled at a temporal granularity. Time-value curves, generated for each task, ensure that mission resources are utilized in a manner which optimizes mission performance. It should be noted, however, that although the present invention has shown and described the use of time-value curves as applied to mission workflow tasks, the present invention is not limited to this application; rather, it can be readily appreciated by one of skill in the art that time-value curves may be used to optimize the delivery of any resource to any consumer by taking into account the dynamic environment of the consumer and resource.

Time-value curves to provide dynamic QoS for time sensitive file transfers

Application program network service requests are translated into specific actions that are then performed through the management plane and/or control plane. The translations and resulting actions are responsive to previously defined policies for the communication network, and may further reflect processing of previous service requests by the same or another application program. The amount of resources available for use by a given application program may be predefined based on a globally defined network policy. Each service request obtained from an application program may be translated into multiple actions performed using various specific protocols and/or interfaces provided by either the management plane, the control plane, or both the management and control planes. Reports of network activity, status and/or faults for a requesting application program may be tailored to the requesting program's view of the network, and passed directly and exclusively to the requesting program.

System and method for translating application program network service requests into actions and performing those actions through the management and/or control plane responsive to previously defined policies and previous requests by the same or another application program

A Grid Proxy Architecture for Network Resources (GPAN) is proposed to allow Grid applications to access resources shared in communication network domains. GPAN bridges Grid services serving user applications and network services controlling network devices through its proxy functions such as resource data and management proxies. Working with Grid resource index and broker services, GPAN employs distributed network service peers (NSP) in network domains to discover, negotiate and allocate network resources such as bandwidth for Grid applications. An elected master NSP is the unique Grid node that runs GPAN and represents the whole network to share network resources to Grids without Grid involvement of network devices. GPAN provides the Grid Proxy service (GPS) to interface with Grid services and applications, and the Grid Delegation service (GDS) to interface with network services to utilize network resources. Resource-based XML messaging is employed for the GPAN proxy communication.

A method and apparatus for providing network based load balancing of medical image data among two or more image archive systems is disclosed. A network element is employed to interface to a network carrying medical image data that may include tasks to be performed on the data. A network service associated with the network element monitors the current load or the available capacity of each of the image archive systems. When a task is received the network service determines the level of complexity of the task and compares the level of complexity to the current load or available capacity of each of the image archive systems. The network service selects the one of the image archive systems to perform the task that has the lowest current load or highest available capacity relative to the level of complexity of the received task.

Method and apparatus for providing network based load balancing of medical image data

Fulfillment of web-service requests may be facilitated by intelligently load balancing the web-service requests between servers or server clusters configured to perform the requested web-service. Load balancing may be based on the type of request, target class of server, whether the request is likely to spawn any subsequent requests, relevant historical information, other requests, current and anticipated work load on the servers, the current ability of the servers to handle additional requests, the numbers type and schedule of requests in a queue waiting to be allocated to one or more of the servers, and numerous other factors that may affect the servers' ability to process the request. Requests may be classified to enable historical correlation between how servers have handled previous requests and the present request. Additionally, requests may be scheduled for future execution and monitored during execution.

Method and apparatus for facilitating fulfillment of web-service requests on a communication network

Time-value curves to provide dynamic QoS for time sensitive file transfer

A communication session is maintained through a disruption by saving state information related to the communication session upon detecting the disruption and subsequently using the saved state information to re-establish the communication session. The communication session may be associated with an access point device in a wireless communication system, and the communication session may be re-established through the same or a different access point device in the wireless communication system.

System, device, and method for maintaining communication sessions in a communication system

A method and apparatus for securing an optical communication link includes the step of identifying a profile of the link by measuring, at the transmitter, optical back-reflections from optical pulses forwarded to a receiver. The profile is stored at the transmitter. Periodically during operation, such as during key exchange, more optical pulses are forwarded to the receiver, and the back reflections are collected as periodic profiles. The periodic profiles are compared against the stored profiles. Eavesdroppers, such as those who cut the fiber, tap the fiber, or implement a man in the middle attack, may be easily identified because the losses caused by their interference with the fiber will be evident in the periodic profiles.

Method and apparatus for securing fiber in an optical network

A method and apparatus for monitoring the transportation of medical images on a communication network includes a medical image transport service (MITS) that may be used to notify clients of the status of scheduled requests. The MITS may be configured to provide numerous notifications, such as the scheduled time for delivery, changes in scheduled time for delivery, delays associated with delivery at the scheduled time, and likely resolutions to network or other delays attendant to the requested transaction. The notifications may be sent in-band on the network or out-of-band on a parallel network. Where the notification relates to a delayed transaction, the notification message may contain the reason for the delay, the source of the delay, its location, and if other images can still be retrieved. The notification may also include a likely resolution of the problem and an estimate of when the problem will be resolved.

Method and apparatus for monitoring the transportation of medical images on a communication network

Network resources allocated for particular application traffic are aware of the characteristics of L4+ content to be transmitted. One embodiment of the invention realizes network resource allocation in terms of three intelligent modules, gateway, provisioning and classification. A gateway module exerts network control functions in response to application requests for network resources. The network control functions include traffic path setup, bandwidth allocation and so on. Characteristics of the content are also specified in the received application network resource requests. Under request of the gateway module, a provisioning module allocates network resources such as bandwidth in optical networks and edge devices as well. An optical network resource allocation leads to a provisioning optical route. Under request of the gateway module, a classification module differentiates applications traffic according to content specifications, and thus creates and applies content-aware rule data for edge devices to forward content-specified traffic towards respective provisioning optical routes.

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Arlington, MA, United States of America

Franco Travostino