Patents Represented by Attorney, Agent or Law Firm Coats & Bennett, P.L.L.C.
  • Patent number: 8335958
    Abstract: A method of communicating between a transmitter and a receiver based on frames is provided. An error detection code is added to each frame to be transmitted by the transmitter. The frames to be transmitted by the transmitter are transmitted and the transmitted frames are received by the receiver. An error detection code is re-computed based on the received frames by the receiver. At least one frame which has been correctly received based on a comparison of the error detection code of each frame with the re-computed error detection code of each received frame is acknowledged. An error indication frame is sent by the receiver when an error is detected based on the comparison result. If a retransmission condition is detected by the transmitter by receiving an error indication frame from the receiver or if no acknowledgement frame was received by the transmitter from the receiver in a predetermined time interval, the currently transmitted frame is aborted and the transmitter inserts a trailer.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: December 18, 2012
    Assignee: ST-Ericsson SA
    Inventors: Peter Van Den Hamer, Andrei Radulescu
  • Patent number: 8335385
    Abstract: A pixel block (300) is losslessly compressed into a candidate compressed block. If the bit length of the candidate block exceeds a threshold value, the property values of the pixels (310-317) in the block (300) are quantized and the quantized values are losslessly compressed into a new candidate compressed block. The procedure is repeated until a candidate compressed block having good image quality and a bit length below the threshold value is found. A compressed representation (400) of the block (300) is determined based on the found candidate compressed block (420) and an identifier (410) of the used quantization parameter.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: December 18, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jacob Strom, Tomas Akenine-Moller, Per Wennersten
  • Patent number: 8331664
    Abstract: A pixel block is compressed by providing a respective color component prediction for each pixel in the block. A difference between color components of two neighboring pixels is calculated and compared to a threshold. If the difference is smaller than the threshold, the prediction is calculated based on a first linear combination of the color components of these two neighboring pixels. However, if the difference exceeds the threshold, a second or third linear combination of the color components of the neighboring pixels is employed in the prediction. A guiding bit associated with the selected linear combination may be used. A prediction error is calculated based on the color component of the pixel and the provided prediction. The compressed block comprises an encoded representation of the prediction error and any guiding bit.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: December 11, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jacob Strom, Per Wennersten, Tomas Akenine-Moller, Jim Rasmusson
  • Patent number: 8326266
    Abstract: A mobile communication device is configured to provide redundant credentialed access to one or more secured wireless communication networks. The mobile device obtains credentialed access to one of the secured networks by remotely using credentials stored in a credentialed communication device that is locally available (i.e., in the vicinity of the mobile device). Responsive to detecting the actual, or potential, compromise of the mobile device's credentialed access to that secured network, the mobile device switches to other credentials stored in a different credentialed device and obtains credentialed access to one of the secured networks by remotely using those other credentials. This switching occurs dynamically upon detecting the compromise of credentialed access, as well as automatically without requiring the mobile device's user to manually enter commands into the device's user interface.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: December 4, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Bernard Smeets
  • Patent number: 8325621
    Abstract: According to the present invention, a method in a base station is provided for predicting interference contribution, when scheduling an uplink data packet transmission from a first user equipment. The first user equipment is connected to the base station. The first user equipment is in the neighbor of a neighboring cell served by a neighboring base station. The method comprises the steps of: Obtaining signal strength measurements regarding the first user equipment. The signal strength measurements are based on a signal between the first user equipment and the neighboring base station; Receiving a resource scheduling request regarding the first user equipment for the uplink data packet transmission; Scheduling uplink resources for the requested uplink data packet transmission; Determining transmission power to be used for the scheduled uplink resources, and: Estimating an interference prediction contribution based on the determined transmission power and the obtained signal strength.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: December 4, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Arne Simonsson, Anders Furuskär
  • Patent number: 8326155
    Abstract: An optical demultiplexer (13, 30) for wavelength division multiplex WDM optical radiation comprising a plurality of wavelength channels (Ch1 . . . Ch16) spaced over a wavelength spectrum said demultiplexer being for separating the WDM radiation into individual wavelength channels is described. The demultiplexer comprises a first demultiplexer (12) for dividing the W-DM radiation into a plurality of sub-bands (Ch1 . . . Ch4, Ch5 . . . Ch8, Ch9 . . . Ch12, Ch13 . . .
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: December 4, 2012
    Assignee: Ericsson AB
    Inventors: Aldo Perasso, Massimo Speciale
  • Patent number: 8323499
    Abstract: Biologically treated wastewater is directed as mixed liquor from a treatment tank to a downstream filtration tank having a having a submerged membrane module extending across the cross-sectional area of the filtration tank. Mixed liquor is directed from the bottom of the filtration tank upwardly into the membrane module such that substantially all of the mixed liquor received in the bottom of the filtration tank flows through the membrane module. A permeate stream is produced. A portion of a non-permeate stream is recirculated to the treatment tank. The filtration tank is sized such that there is no substantial recycle of mixed liquor in the filtration tank. Once the mixed liquor in the filtration tank makes one pass through the membrane module the mixed liquor is recycled to the treatment tank and generally not permitted to be recycled through the membrane module without first returning to the treatment tank.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: December 4, 2012
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Hong W. Zhao, Martin Brockmann, Heribert Moeslang, Pierre Girodet
  • Patent number: 8325624
    Abstract: Method and apparatus for enabling accurate link quality estimation of a wireless link between a sending node (400) and a receiving node (402). When the sending node receives link state reports from the receiving node, it estimates the current state of the wireless link. The sending node also determines a measurement adjusting parameter if the link state reports are deemed inaccurate in relation to the estimated link state, based on a deviation between the received link state reports and the estimated actual link state. The sending node then sends the determined measurement adjusting parameter to the receiving node, and the receiving node provides a link state report based on signal measurements adjusted by the measurement adjusting parameter. The adjusted link state report can then be used for link adaptation of the wireless link and/or for packet scheduling decisions.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: December 4, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: David Hammarwall, George Jongren, Magnus Lundevall
  • Patent number: 8320260
    Abstract: A wireless communication network automatically tests itself for sleeping cells. This is done by designing the base stations to regularly act as a terminal, contact its neighboring base stations and as a mobile perform a set of typical traffic cases. From the outcome of the traffic cases the probing base station detects neighboring base stations that cannot carry traffic. The information about sleeping cells is subsequently communicated from the base station to the operation and maintenance system.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: November 27, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Erik Lars Westerberg, Kenneth Balck, Anna Pucar Rimhagen
  • Patent number: 8318026
    Abstract: A system for controlling the sedimentation of sand or grit particles suspended in waste water contained in a grit chamber by determining the temperature of water contained in the grit chamber and by operating a turbulence creating means on the basis of the water temperature. A method of controlling the sedimentation of sand and grit particles suspended in waste water contained in a grit chamber, by determining the temperature of water contained in the grit chamber and by operating a turbulence creating means on the basis of the water temperature.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: November 27, 2012
    Assignee: Veolia Water Solutions & Technologies Support
    Inventor: Soren Johannes Hojsgaard
  • Patent number: 8320271
    Abstract: There is provided a method of determining a discontinuous reception and/or transmission cycle length, the method comprising determining information relevant to the cycle length from a high layer in a protocol stack; providing the information to a lower layer in the protocol stack; and in the lower layer of the protocol stack, determining the cycle length from the information.
    Type: Grant
    Filed: September 3, 2007
    Date of Patent: November 27, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gabor Fodor, Muhammad Ali Kazmi
  • Patent number: 8320333
    Abstract: In at least one embodiment taught herein, the point in a packet transmission sequence space at which hyper frame numbers are incremented is changed at least temporarily as part of handover processing, where a mobile station (12) is handed over from a source cell to a target cell. More particularly, in at least one embodiment, changing the triggering point, e.g., changing the transmission sequence number at which HFNs are incremented, is done in a manner that delays a next incrementing of the HFN for a radio bearer that was handed over, therefore giving additional time for the mobile station (12) and the handover target base station (16) to ensure synchronization in the face of possible packet losses in the source and/or target cells arising during the handover event.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: November 27, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Gunnar Mildh, Magnus Lindstrom
  • Patent number: 8316068
    Abstract: Exemplary embodiments of the present invention comprise a method for compressing data for storage in memory. According to one embodiment, the method forms a set of values based on a monotonically ordered series of look-up table values. For one or more paired values in the set, the exemplary method generates a difference of the values in the pair. After replacing one of the values in the pair with a value based on the differences to modify the set, the exemplary method stores final values based on the modified set in memory. The present invention also comprises memory for storing the look-up table values. One exemplary memory comprises a decoder, an encoder, and one or more patterns of crisscrossed interconnect lines that interconnect the encoder with the decoder. The patterns of crisscrossed interconnection lines may be implemented on one or more planar layers of conductor tracks vertically interleaved with isolating material.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: November 20, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Paul Wilkinson Dent
  • Patent number: 8315339
    Abstract: A user terminal is configured to generate supplemental pilot symbols from data symbols transmitted to other user terminals meeting a predetermined reliability criterion. The supplemental pilot symbols can be used for channel estimation, covariance estimation, CQI estimation, or other purposes.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: November 20, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Anders Rosenqvist, Johan Nilsson, Andres Reial
  • Patent number: 8316108
    Abstract: A method and apparatus for obtaining a real time media stream provided as a plurality of media fragments from a plurality of remote nodes in a communications network is described. Media fragments are requested from the plurality of remote nodes. A series of media fragments is received from at least one of the plurality of remote nodes. A selection criterion is determined for identifying the series of data fragments, and a blocking request is sent to at least one other of the plurality of remote nodes, the blocking request instructing the at least one other node to block the media fragments satisfying the selection criterion from being sent.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: November 20, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Andreas Ljunggren, Robert Skog
  • Patent number: 8314772
    Abstract: A computer mouse including a base and rotatably coupled controller that permits only circular arc motions where only two radii of curvature are permitted and the radii differ in length. Hand translation is prevented by the device. A contoured hand engaging surface on the controller includes a raised palm seat with a spiral hand seat around the palm seat. Ergonomically-configured selectors are described. The hand motions permitted by the mouse are constrained by a toroidal shape at the interface between a base and a rotatably-movable controller. Selectors include one or more one finger activated keys mechanically linked to an internal electrical selector switch. A thumbwheel selector is also located in the controller.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: November 20, 2012
    Inventor: Stanley S. Coe
  • Patent number: 8316148
    Abstract: A method and apparatus for obtaining a real time media stream provided as a plurality of media fragments from a plurality of remote nodes in a communications network. A first series of media fragments satisfying a first selection criterion is requested from a first remote node and a further series of media fragments satisfying a further different selection criterion is requested from at least one further remote node. When combined, the first series of fragments and the further series of fragments provide the complete media stream.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: November 20, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Andreas Ljunggren, Robert Skog
  • Patent number: 8313341
    Abstract: Guide element (3) for a connector device (1), which element has a first and a second end (3a, 3b). The element (3) is adapted to be attached to a PCB (printed circuit board) (2) of the connector device. Further, the guide element comprises a first bevel (33) at the first end (3a), the surface of which is provided with a plurality of recesses (36), which recesses are adapted to receive a plurality of conductive connector tongues (4) of the connector device (1). Further, a connector device (1) for establishing a connection between a test device and a test system, a connector arrangement (11) for test procedures comprising at least one connector device (1) and a method of manufacturing a connector device (1) is comprised as well.
    Type: Grant
    Filed: May 30, 2011
    Date of Patent: November 20, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Björn Falk
  • Patent number: 8315343
    Abstract: A composite signal including a plurality of component signal streams is processed using QR-decomposition to detect symbols and calculate a decision metric for each of the signal streams (202). Soft serial interference cancellation is performed on the composite signal based on the symbols detected for different ones of the signal streams and a ranking of the signal streams (204). The symbols are re-detected and the decision metric re-calculated for each signal stream based on soft serial interference cancellation results (206). The different decision metric calculations for at least one of the signal streams are compared to determine whether symbol detection is more accurate with or without soft serial interference cancellation (208). The signal streams are decoded using symbols detected based on soft serial interference cancellation results when symbol detection is determined to be more accurate with soft serial interference cancellation (210).
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: November 20, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Hideshi Murai, Bo Goransson
  • Patent number: 8315160
    Abstract: A method and apparatus provide network-based flow control for mobile station having data connections to the network. In an exemplary embodiment, a Packet Control Function (PCF) in a Radio Access Network (RAN) requests that a Packet Data Serving Node (PDSN) in a Packet Core Network (PCN) turn flow control on and off as needed for mobile station data connections. That is, if the PCF receives data from the PDSN for delivery to a mobile station that the PCF determines to be unavailable, the PCF requests that data transfers from the PDSN be suspended for that mobile station. Such suspension avoids needless continued transfer of undeliverable data to the PCF. The PCF monitors or otherwise determines whether a flow-controlled mobile station has become available again and, if so, notifies the PDSN so that it can lift the suspension and resume data transfers as needed.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: November 20, 2012
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Vibhor Julka, Roger Gustavsson