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Chakrabarti, CA

Arnab Chakrabarti, San Diego, CA US

Patent application numberDescriptionPublished
20090323640FAIR RESOURCE SHARING IN WIRELESS COMMUNICATIONS - Providing for fair resource sharing among wireless nodes in a wireless communication environment is described herein. By way of example, fairness can comprise establishing a set of resource sharing credits for wireless nodes. By expending credits, a node can borrow a resource of another node, to enable or enhance operation of the borrowing node. Credits for the borrowing node are decreased based on consumption of a shared resource, or credits for the lending node are increased based on such consumption, or both. Once an amount of credits expires, a node can be restricted from borrowing further resources until enough resources are lent to build up a suitable amount of credits. Accordingly, fairness can comprise correlating shared resource consumption with shared resource provisioning, to encourage participation in cooperative wireless communications.12-31-2009
20090325479RELAY ANTENNA INDEXING FOR SHARED ANTENNA COMMUNICATION - Providing for distributed processing for a set of wireless communication devices to implement distributed, multi-antenna communication via one or more of the devices is described herein. By way of example, a relay link can be established between one or more wireless transceivers. The link can be utilized to distribute an indexing parameter to a remote transceiver. The indexing parameter can be employed to identify a set of index-specific instructions configured for a particular wireless node of a network. Based on the instructions and indexing parameter, such transceiver can locally compute and transmit, or receive and decode, a stream of traffic data for the multi-antenna communication. Thus, for instance, a P-P link between UTs can be employed to implement increased throughput and reduced interference benefits of multi-antenna communication for unplanned configurations of mobile devices.12-31-2009
20090325480METHOD AND APPARATUS FOR SELECTING AND PROCESSING SIGNALS FROM A SOURCE STATION AND RELAY STATIONS - Techniques for selecting and processing signals from different stations in a wireless network are described. A destination station may receive a direct signal from a source station and at least one relay signal from at least one relay station. The destination station may determine metrics for the source and relay stations, e.g., based on pilots received from these stations. The destination station may select at least one signal to process from among the direct and relay signals based on the metrics for the source and relay stations. The destination station may select the direct signal if the metric for the source station exceeds a threshold. The destination station may select the relay signal from each relay station having a metric exceeding at least one threshold. The destination station may process the at least one selected signal to recover a transmission sent by the source station to the destination station.12-31-2009
20100002656OPPORTUNISTIC RELAY SCHEDULING IN WIRELESS COMMUNICATIONS - Systems and methodologies are described that facilitate providing opportunistic relay node communication based on scheduling of other communications in a wireless network. In particular, a relay node can maintain a backhaul link with an access point and an access link with a mobile device to facilitate communicating information therebetween. Time slots during which the backhaul link is active can be determined and avoided during scheduling access link communications with the mobile device. Furthermore, resource assignments from the access point to the mobile device can be monitored and decoded such that time slots associated therewith can also be determined and avoided. Thus, the relay node can communicate with mobile devices in time slots where the backhaul link is inactive and/or the mobile devices are not occupied communicating directly with the access point.01-07-2010
20100022263SYSTEM AND METHOD FOR NETWORK MANAGEMENT - Various systems and methods for network management are disclosed. In one embodiment, a network management system comprises a receiver for receiving data from a plurality of entities, including base stations and/or subscriber handsets, a processor for generating a network map or a recommendation based on the received data, a display device for displaying the network map or recommendation, and a transmitter for transmitting instructions based on the recommendation.01-28-2010

Bimal Chakrabarti, San Diego, CA US

Patent application numberDescriptionPublished
20110274721HIV VACCINES BASED ON ENV OF MULTIPLE CLADES OF HIV - In one embodiment, the invention provides a multiclade HIV plasmid DNA or viral vector vaccine including components from different clades of Env (optionally Env chimeras) and Gag-Pol-(optionally)Nef from a singlr clade. The vaccine of the invention may further include V1, V2, V3, or V4 deletions or combinations thereof. In another embodiment, the invention provides multiclade HIV envelope immunogens.11-10-2011

Buddhadev Chakrabarti, Walnut, CA US

Patent application numberDescriptionPublished
20090019685Composite Structure having Ceramic Truss Core and Method for Making the Same - A CMC sandwich used to fabricate CMC structures includes facesheets bonded to a core reinforced with a ceramic truss comprising an array of CMC pins. The binder matrix in the ends of the pins is removed, leaving exposed, flexible ceramic fibers. The exposed ceramic fibers are bent so as to extend parallel to the facesheets, and are bonded to one or more plies of the facesheets. The binder matrix in the ends of the ceramic pins may be removed by mechanical or chemical processes.01-22-2009
20090035510COMPOSITE STRUCTURE HAVING REINFORCED CORE AND METHOD OF MAKING SAME - A polymer-based composite sandwich includes a core bonded between fiber reinforced resin facesheets. The core includes a truss formed by groups of composite pins held in a low density foam. The pins in each group intersect to form nodes adjacent to one of the facesheets. The ends of the pins extend parallel and are bonded to the facesheets.02-05-2009
20090263627Exhaust Washed Structure And Associated Composite Structure And Method Of Fabrication - A composite structure and an associated exhaust washed structure are provided which may be formed of ceramic matrix composite (CMC) materials. A method of fabricating a composite structure which may include the CMC material is also provided. A composite structure may include a corrugated septum extending in a lengthwise direction. The composite structure may also include a flute within which the corrugated septum is disposed to form, for example, a partitioned flute assembly.10-22-2009
20100151189Composite Structure Having Reinforced Core and Method of Making Same - A polymer-based composite sandwich includes a reinforced core bonded between a pair of composite facesheets. The core includes a truss formed by groups of composite pins held in place by a layer of structural foam. The pins in the groups are radially arranged around nodes. The ends of the pins are splayed and sandwiched between the foam layer and the facesheets.06-17-2010

Patent applications by Buddhadev Chakrabarti, Walnut, CA US

Deepayan Chakrabarti, Sunnyvale, CA US

Patent application numberDescriptionPublished
20100145944MINING BROAD HIDDEN QUERY ASPECTS FROM USER SEARCH SESSIONS - An optimization-based framework is utilized to extract broad query aspects from query reformulations performed by users in historical user session logs. Objective functions are optimized to yield query aspects. At run-time, the best broad but unspecified query aspects relevant to any user query are presented along with the results of the run time query.06-10-2010

Dhruva Chakrabarti, Cupertino, CA US

Patent application numberDescriptionPublished
20110185359Determining A Conflict in Accessing Shared Resources Using a Reduced Number of Cycles - Illustrated is a system and method for identifying a potential conflict, using a conflict determination engine, between a first transaction and a second transaction stored in a conflict hash map, the potential conflict based upon a potential accessing of a shared resource common to both the first transaction and the second transaction. The system and method further includes determining an actual conflict, using the conflict determination engine to access the combination of the conflict hash map and the read set hash map, between the first transaction and the second transaction, where a time stamp value of only selected shared locations has changed relative to a previous time stamp value, the time stamp value stored in the read set hash map and accessed using the first transaction.07-28-2011

Partha P. Chakrabarti, Simi Valley, CA US

Patent application numberDescriptionPublished
20090264424VANILLOID RECEPTOR LIGANDS AND THEIR USE IN TREATMENTS - Compounds having the general structure10-22-2009

Patent applications by Partha P. Chakrabarti, Simi Valley, CA US

Prabhansu Chakrabarti, Sunnyvale, CA US

Patent application numberDescriptionPublished
20090296360VOLTAGE REGULATOR ATTACH FOR HIGH CURRENT CHIP APPLICATIONS - A voltage regulator. The voltage regulator includes an interposer having, on a first side, a plurality of electrical connections suitable for coupling to a printed circuit board (PCB). The interposer also includes at least one power plane and at least one ground plane, wherein each of the power and ground planes is coupled to one or more of the electrical connections. The voltage regulator further includes a DC-DC converter that is electro-mechanically attachable to and detachable from the interposer. The interposer includes a socket, on a second side, that is suitable to receive two or more electro-mechanical connecting members of the DC-DC converter. When the DC-DC converter is attached to the interposer, at least one of the electromechanical connecting members is electrically coupled to a power plane of the interposer, while at least one other one of the electromechanical connecting members is electrically coupled to the ground plane.12-03-2009

Patent applications by Prabhansu Chakrabarti, Sunnyvale, CA US

Samita Chakrabarti, Sunnyvale, CA US

Patent application numberDescriptionPublished
20090046601TOPOLOGY CONTROLLED DISCOVERY FOR NEXT HOP DETERMINATION - In a particular embodiment of the present invention, a particular node in an ad hoc network is configured with a desirable number of neighbor nodes and equipped with a transmission power level hierarchy. The particular node may adjust a transmission power level to a different level in the transmission power level hierarchy, based on a number of responses received from neighbor nodes after the particular node broadcasts a request at current transmission power level. This adjustment process is repeated until the particular node acquires a desirable number of neighbor nodes.02-19-2009
20090046712PREDICTIVE ROUTING TECHNIQUE IN THE AD HOC WIRELESS NETWORK - In a particular embodiment of the present invention, a forwarding node in an ad hoc network collects sets of node information pertaining to its neighbor nodes. An example of a type of node information is history information that indicates previous time periods during which a neighbor node has been available for communication. Other types of node information may include proximity information that indicates how far a neighbor node is from the forwarding node. In selecting a routing path, the forwarding node takes into account information collected in the sets of node information. A routing path can be selected to include a neighbor node having the highest probability to be available for communication. Additionally or alternatively, a routing path may be selected to minimize the power transmission level required for the forwarding node to forward data packets.02-19-2009

Sibaprasad Chakrabarti, Torrrance, CA US

Patent application numberDescriptionPublished
20090033156EFFICIENT OPERATING POINT FOR DOUBLE-ENDED INVERTER SYSTEM - Systems and methods are provided for controlling a double-ended inverter system coupled to a first energy source and a second energy source. The method comprises determining a constant power line associated with operation of the double-ended inverter system, the constant power line representing a desired power flow to the second energy source. The method further comprises determining an operating point on the constant power line, the operating point producing a minimum power loss in the double-ended inverter system for a required output current, and modulating the double-ended inverter system using a first voltage command and a second voltage command corresponding to the operating point.02-05-2009

Sudipta Chakrabarti, Foster City, CA US

Patent application numberDescriptionPublished
20090090770COMBINE IDENTITY TOKEN - An apparatus and method is provided for using a single portable consumer device for purchase transactions, providing identification, and contacting a law enforcement agency. In one embodiment the present invention provides a portable consumer device comprising a body, a first memory containing financial information on the body, and a second memory containing driver license information on the body.04-09-2009