| Patent application number | Description | Published |
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| 20100042639 | CONFIGURATION FILE FRAMEWORK TO SUPPORT HIGH AVAILABILITY SCHEMA BASED UPON ASYNCHRONOUS CHECKPOINTING - In various exemplary embodiments, a method and related system for configuration file management in a network element comprise one or more of the following: upon initialization of the network element, reading a first configuration file that is in a character-encoded format; for each application process, translating the first configuration file into a plurality of non-character-encoded configuration files; configuring each application process based on the respective plurality of non-character-encoded configuration files; modifying, in real-time, at least one of the non-character-encoded configuration files; and merging each of the non-character-encoded configuration files into a second configuration file that is in a character-encoded format. | 02-18-2010 |
| 20100180106 | ASYNCHRONOUS CHECKPOINTING WITH AUDITS IN HIGH AVAILABILITY NETWORKS - Example embodiments are directed to methods of ensuring high availability of a network using asynchronous checkpointing of application state data related to an object. Example embodiments include a method of asynchronous checkpointing application state data related to at least one object, including receiving application events and processing the application events to obtain new application state data. The method further includes modifying at least a portion of previously stored application state data and asynchronously and independently checkpointing the modified application state data based on whether the modified application state data has reached a stable state. Example embodiments also include a method of ensuring consistent application state data across a network. This method may include having at least two CAPs independently and asynchronously storing application state data related to at least one object at two different network nodes and automatically auditing the stored application state data to ensure data consistency. | 07-15-2010 |
| 20100185682 | Object identifier and common registry to support asynchronous checkpointing with audits - Example embodiments provide a method of identifying an application object that includes forming an assigned global persistent data record identifier (GPR ID) of the application object. The GPR ID includes a GPR type identifier, which identifies a cooperating application process (CAP) owner and a type of application object. The GPR ID further includes a GPR record identifier, which identifies an instance of the application object. | 07-22-2010 |
| Patent application number | Description | Published |
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| 20090129296 | METHOD OF CALL CONFERENCING TO SUPPORT SESSION CONTINUITY FOR MULTI-MODE CLIENTS - The present invention provides methods of inter-technology handoff of a multi-mode mobile unit in a packet-switched communication system. One embodiment of the method includes establishing a call from a first application layer client in the first mobile unit using a first wireless communication link that operates according to a first wireless access technology. The method also includes sending, in response to detecting changing conditions of the first wireless communication link, a request to form a conference call including the first application layer client and inviting a second application layer client in the first mobile unit to join the conference call. The second application layer client uses a second wireless communication link that operates according to a second wireless access technology. The method further includes handing off the call from the first application layer client to the second application layer client. | 05-21-2009 |
| 20090141683 | METHOD OF BEST EFFORT HANDOFF TO MAINTAIN RADIO BEARER AND MIP SESSION CONTINUITY FOR MULTI-MODE MOBILE UNITS - The present invention provides a method of best effort hand off that is implemented in a mobile unit capable of communicating with a network according to multiple wireless access technologies. The method includes performing a handoff of the mobile unit from a first wireless communication link established according to a first wireless access technology to a second wireless communication link established according to a second wireless access technology. The method also includes transmitting, over the second wireless communication link, a de-registration message requesting de-registration of the first wireless communication link in response to performing the handoff. | 06-04-2009 |
| 20090175239 | METHOD OF SUPPORTING QUALITY-OF-SERVICE APPLICATION SESSION CONTINUITY DURING INTER-TECHNOLOGY HANDOVER USING A COMMON PACKET DATA FUNCTION - The present invention provides a method of handing off a mobile unit that supports multiple quality-of-service (QoS) application layer clients that operate according to multiple wireless access technologies in a packet-switched communication system. The method includes receiving information indicating a request to hand off the mobile unit from a first access network that operates according to a first wireless access technology to a second access network that operates according to a second wireless access technology. The mobile unit established a first session according to the first wireless access technology at a first QoS level. The method also includes establishing, concurrently with the first session and in response to receiving the handoff request, a second session according to the second wireless access technology at the first QoS level. The method further includes communicating with the mobile unit at the first QoS level using the first and second sessions. | 07-09-2009 |
| 20100118832 | Method for connection termination in mobile IP - A method is provided for optimizing the sending of a Mobile IP Revocation Reply. According to the invention methodology, a Foreign Agent operating as the care-of address for a given mobile unit will send to the Home Agent for that mobile unit a Revocation Acknowledgement message immediately after receiving a Revocation message from the Home Agent, without awaiting the conclusion of the Foreign Agent's tear-down steps. After sending that immediate acknowledgement to the Home Agent, the Foreign Agent independently proceeds with its regular procedures of forwarding the Revocation message to the client (as needed), waiting for a response from the client (including retransmitting the request to the client on a timer if no response received), and tearing down the user plane. With the method of the invention, the latency of the latter procedures would not result in a delay in sending the Revocation Acknowledgement from the Foreign Agent to the Home Agent. | 05-13-2010 |
| 20110072122 | Methods for improved server redundancy in dynamic networks - In one embodiment, a server is assigned a candidate secondary server role such that the dynamic network employs a “make-before-break” redundancy where redundant nodes proactively synchronize replicated data and state information with a standby secondary server prior to releasing the responsibilities of active primary and/or secondary server(s). The “make-before-break” redundancy ensures relatively high availability of dynamic networks and realized services. | 03-24-2011 |
