Patents Assigned to Broadcom
  • Publication number: 20140347990
    Abstract: A communication device configured to perform a load balancing procedure in response to a mobility management entity being overloaded and/or shut down. The base station can be configured to generate a radio resource control (RRC) Connection Reject message including a load balancing clause. The communication device can be configured to initiate a load balancing procedure based on the RRC Connection Reject message. The communication device can also be considered to initiate a load balancing procedure after a predetermined wait time has expired and/or after a predetermined number of received RRC Connection Reject messages.
    Type: Application
    Filed: May 20, 2014
    Publication date: November 27, 2014
    Applicant: Broadcom Corporation
    Inventors: Lokesh CHIMBILI, Pradeep Seshadri
  • Publication number: 20140347214
    Abstract: A combined GNSS and FM receiver receives FM signals comprising satellite navigation data from an AGNSS server. Associated navigation information such as a position fix is determined based on the received satellite navigation data. The received satellite navigation data are GNSS assistance data or LTO data. The AGNSS server generates the satellite navigation data by acquiring GNSS data from a satellite reference network. The acquired GNSS data comprise, for example, GPS data, GLONASS data and/or GALILEO data. The generated satellite navigation data are broadcasted as FM signals through RDS and/or RBDS to the combined GNSS and FM receiver. The combined GNSS and FM receiver receives updated satellite navigation data in subsequent FM signals, periodically or aperiodically, and updates associated navigation information, accordingly. The combined GNSS and FM receiver decodes the received FM radio signals for the updated satellite navigation data generated at the AGNSS server before being transmitted.
    Type: Application
    Filed: August 11, 2014
    Publication date: November 27, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Steven Malkos, Christopher Lane
  • Publication number: 20140349602
    Abstract: A user equipment establishes an elevated priority data connection and one or more non-elevated priority data connections. The elevated priority data connection may be an emergency public data network (PDN) connection. The user equipment may determine that one or more deactivation criteria for the emergency PDN connection is satisfied while the emergency PDN connection and at least one non-emergency PDN connection of the user equipment are active. Deactivation criteria may include expiration of a Periodic Tracking Area Update timer. In response, the user equipment may locally deactivate the emergency PDN connection and send a deactivation indication to the operator network.
    Type: Application
    Filed: May 30, 2013
    Publication date: November 27, 2014
    Applicant: Broadcom Corporation
    Inventors: Soma Majumdar, Lakshmi Siva Koteswararao Chimakurthi
  • Publication number: 20140348040
    Abstract: There are provided measures for enabling a semi-full-duplex single-carrier transmission technique. Such measures may exemplarily comprise classifying each one of served terminals into one of two transmission groups, assigning an uplink-downlink configuration of a frame structure for time division duplex communication for each one of the two transmission groups such that uplink subframes for one transmission group and downlink subframes of the other transmission group coincide with each other, and scheduling uplink and downlink transmissions for the served terminals on a single carrier according to the assigned uplink-downlink configurations for the two transmission groups.
    Type: Application
    Filed: December 21, 2011
    Publication date: November 27, 2014
    Applicant: Broadcom Corporation
    Inventors: Wei Hong, Chunyan Gao, Haiming Wang, Pengfei Sun, Xinying Gao
  • Patent number: 8896676
    Abstract: A 3D video viewing shutter device receives display response time from a 3D video display device for determining shutter open and close times. Response time may correspond to display type, a particular display and/or a change in pixel illumination levels between frames. The shutter device receives response information during device initialization and/or corresponding to changing pixel illumination levels. A sequence of 3D frames may comprise a pattern of left frames, right frames, blank frames and/or frames comprising a combination of left and right frames. Based on display device and/or shutter device response times, the shutter device may extend shutter transmittance time during a frame display interval into a blank frame interval. Transmittance may be enabled during display of blank frames subsequent to left or right frames. The shutter device and display device may communicate via a wireless link for example, via a Bluetooth wireless link utilizing Bluetooth clocks.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventor: Sunkwang Hong
  • Patent number: 8897338
    Abstract: A receiver receives multipath signals in a W-CDMA system. Channel estimates and timing reference signals are generated utilizing the received multipath signals. Timing correction signals indicating a location of the received multipath signals may be generated and the received multipath signals may be combined based on the computed channel estimates and/or the generated timing reference signals. The multipath signals may be combined as a signal cluster. Circuitry may be provided that computes channel estimates based on at least one of a plurality of received multipath signals, and generates timing reference signals indicating a location of at least one of the plurality of received multipath signals. Circuitry may also be provided that combines at least a portion of the plurality of received multipath signals based on at least a portion of the computed channel estimates and/or the generated timing reference signals.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventors: Mark Kent, Vinko Erceg, Uri M. Landau, Pieter Van Rooyen
  • Patent number: 8897722
    Abstract: Embodiments of a four-port isolation module are presented herein. In an embodiment, the isolation module includes a step-up autotransformer comprising a first and second winding that are electrically coupled in series at a center node. The first port of the isolation module is configured to couple an antenna to a first end node of the series coupled windings. The second port of the isolation module is configured to couple a balancing network to a second end node of the series coupled windings. The third port is configured to couple a transmit path to the center node. The fourth port is configured to couple a differential receive path across the first end node and the second end node. The isolation module effectively isolates the third port from the fourth port to prevent strong outbound signals received at the third port from saturating an LNA coupled to the fourth port.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventors: Mohyee Mikhemar, Hooman Darabi
  • Patent number: 8898286
    Abstract: A broadband gateway may be used to authorize transactions associated with one or more accounts, which may be associated with a user of the broadband gateway. The transaction may be handled by the broadband gateway. The authorizations may be performed based on information associated with the accounts, whose storage may be controlled by the broadband gateway. The broadband gateway may block and/or terminate transactions failing authentication and/or validation, which may be performed based on the stored information. The transactions may be initiated within a network serviced by the broadband gateway. The transactions may also be initiated outside the serviced network. The stored information may comprise a user profile, which may comprise a plurality of settings for controlling and/or managing authorization performed by the broadband gateway. The user profiles may be configurable by users, wherein configuration may comprise initializing and/or modifying one or more of the transaction related settings.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventors: David Garrett, Jeyhan Karaoguz, Xuemin Chen, Wael Diab, David Lundgren, Rich Prodan
  • Patent number: 8897320
    Abstract: A frame format for high data throughput wireless local area network transmissions includes a first preamble segment, a second preamble segment, and a variable length data segment. The first preamble segment includes at least one training sequence and a high throughput channel indication. The second preamble segment includes a high data throughput training sequence when the high throughput channel indication is set and includes a null segment when the high data throughput training sequence is not set.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventors: R. Tushar Moorti, Christopher J. Hansen, Jason A. Trachewsky
  • Patent number: 8897130
    Abstract: Various example embodiments are disclosed. According to an example embodiment, an apparatus may include a switch fabric. The switch fabric may be configured to assign packets to either a first flow set or a second flow set based on fields included in the packets. The switch fabric may also be configured to send a first packet from the first flow set to a first flow set destination via a first path. The switch fabric may also be configured to determine, based at least in part on delays of the first path and a second path, whether sending a second packet from the first flow set to the first flow set destination via a second path will result in the second packet reaching the first flow set destination after the first packet reaches the first flow set destination, the second packet having been received by the router after the first packet.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventors: Brad Matthews, Bruce Kwan, Mohan Kalkunte
  • Patent number: 8898533
    Abstract: Embodiments described herein provide an apparatus for transmitting data in an xDSL. In one example, the apparatus can include a transmitter configured to transmit data over the xDSL system in the form of data transmission units (DTUs), the transmitter having a physical media specific-transmission convergence (PMS-TC) communication sublayer and a retransmission unit that is implemented in the PMS-TC sublayer, the retransmission unit including a retransmission buffer configured to store transmitted DTUs and to index the transmitted DTUs using retransmit containers, each retransmit container being defined as a time slot corresponding to a respective sent DTU. A retransmit request specifies a DTU by a corresponding retransmit container and wherein the retransmission unit is configured to retransmit the specified DTU in response to the retransmit request.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventors: Benoit Christiaens, Miguel Peeters, Raphael Cassiers
  • Patent number: 8897787
    Abstract: A multiservice communication device includes a plurality of transceivers that wirelessly transceive network data with a corresponding plurality of networks in accordance with a corresponding plurality of network protocols, wherein at least one of the plurality of transceivers further transceives control channel data with a remote management unit contemporaneously with the network data via a logical control channel carried using the corresponding one of the plurality of network protocols, wherein the control channel data includes local control data sent to the management unit and remote control data received from the management unit. A processing module processes the remote control data and generates a least one control signal in response thereto, the at least one control signal for adapting at least one of the plurality of transceivers based on the remote control data.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventors: Vinko Erceg, Arya Reza Behzad, David Rosmann, Brima B. Ibrahim, Jeyhan Karaoguz, John Walley
  • Patent number: 8897377
    Abstract: Transcoding multiple media elements for independent wireless delivery. Respective media or multimedia elements are selectively and respectively encoded and/or transcoded. Such respective and selective processing of different media elements provides for their unbundled and independent communication to one or more other devices. In one instance, different respective overlays of a display (e.g., a computer, TV, PDA display, etc.) are respectively and selectively transcoded and/or encoded to generate different respective streams that may each be handled differently as a function of any number of parameters (e.g., media element type, content, communication channel characteristic, source proximity, priority, etc.). Different types of media elements include photo/image, video, graphics, text, audio, picture-in-picture, two-dimensional (2D), three-dimensional (3D), and/or other types of media elements as may be included within a given configuration of a display.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventors: James F. Dougherty, III, Yasantha N. Rajakarunanayake, Alexander G. MacInnis, James D. Bennett, Jeyhan Karaoguz
  • Patent number: 8897397
    Abstract: A method and system for a reconfigurable orthogonal frequency division multiplexing (OFDM) chip supporting single weight diversity are provided. The reconfigurable OFDM chip may be configured to process signals such as IEEE 802.11, 802.16, and digital video broadcasting (DVB). The OFDM chip may generate channel weights to be applied to signals received in receive antennas. The weighted signals may be combined into a single received signal and channel estimates may be generated from the single received signal. Updated channel weights may be generated from the generated channel estimates. Updates to the channel weights may be performed dynamically. The configurable OFDM chip may be utilized to provide collaborative cellular and OFDM-based communication. The reconfigurable OFDM chip and the cellular chip may communicate data and/or control information via a memory coupled to a common bus.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventor: Pieter van Rooyen
  • Patent number: 8897720
    Abstract: A wireless transceiver includes at least one RF transceiver section that generates an outbound RF signal based on outbound data and that generates inbound data based on an inbound RF signal. A configuration controller configures the wireless transceiver, by configuring the wireless transceiver to identify a plurality of communication paths to a remote station, the plurality of communication paths including at least one indirect communication path through at least one intermediate station; configuring the wireless transceiver to communicate with the remote station based on a first path of the plurality of communication paths; and configuring the wireless transceiver to communicate with the remote station based on a second path of the plurality of communication paths.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran
  • Patent number: 8897733
    Abstract: Methods and systems for dynamically tuning and calibrating an antenna using on-chip digitally controlled array of capacitors are disclosed. Aspects of one method may include dynamically tuning a mobile terminal antenna (MTA) using on-chip arrays of capacitive devices. The tuning may be, for example, to compensate for center frequency drift during operation of the mobile terminal. The tuning may be accomplished by selecting capacitive devices in the on-chip arrays of capacitive devices to use in conjunction with an inductive circuit coupled to the MTA, where the inductive circuit may be either off the chip or on the chip. Accordingly, an impedance of the circuit formed by the capacitive devices in the on-chip arrays of capacitive devices and the inductive circuit may be adjusted with respect to the MTA. A valid circuit configuration may include a configuration where no capacitive device may be selected for use with the inductive circuit.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza Rofougaran
  • Patent number: 8898547
    Abstract: Rate control adaptable communications. A common trellis is employed at both ends of a communication system (in an encoder and decoder) to code and decode data at different rates. The encoding employs a single encoder whose output bits may be selectively punctured to support multiple modulations (constellations and mappings) according to a rate control sequence. A single decoder is operable to decode each of the various rates at which the data is encoded by the encoder. The rate control sequence may include a number of rate controls arranged in a period that is repeated during encoding and decoding. Either one or both of the encoder and decoder may adaptively select a new rate control sequence based on a variety of operational parameters including operating conditions of the communication system, a change in signal to noise ratio (SNR), etc.
    Type: Grant
    Filed: May 9, 2009
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventors: Kelly Brian Cameron, Ba-Zhong Shen, Hau Thien Tran
  • Patent number: 8896384
    Abstract: A phase locked loop (PLL) includes a detector, a charge pump, a loop filter, a voltage controlled oscillator (VCO), a divider, and a frequency change module. The detector provides a phase difference based on a reference signal and a feedback signal. The charge pump provides a charge based on the phase difference. The loop filter provides a voltage based on the charge. The VCO provides an output signal based on the voltage received from the loop filter. The divider divides a frequency of the output signal by a value to provide the feedback signal. The frequency change module processes an input signal having a first frequency to provide a processed signal having a second frequency that is different from the first frequency. The frequency change module selects the input signal or the processed signal to provide as the reference signal to the detector. Changing the frequency of the reference signal can change a frequency of a spur.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventor: Hung-Ming Chien
  • Patent number: 8897699
    Abstract: A near field communications (NFC) device is disclosed that interacts with other NFC devices to exchange information and/or the data. Another NFC device inductively couples a received communications signal onto an antenna circuit of the NFC device to provide a recovered communications signal. An overvoltage protection module regulates a power level of the recovered communication signal by detuning the antenna circuit when the power level of the recovered communication signal may cause damage the NFC device. Active components of the overvoltage protection module, such as voltage controlled impedances, operate in their linear mode of operation to reduce unwanted emissions during this regulation process.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventors: Robin Wyndham John Wilson, Philip Dorning
  • Patent number: 8897147
    Abstract: Spectrum analysis (SA) capability is included in various communication devices within a communication network. One or more of the devices use the SA information from other devices in the system to determine status of various communication links were devices in the system. One or more processors within one or more devices can identify any actual/existing or expected failure or degradation of the various components within the system. Such components may include communication devices, communication channels or links, interfaces, interconnections, etc. When an actual/existing or expected failure or degradation is identified, the affected components may be serviced or devices within the system may operate to mitigate any reduction in performance caused by such problems. Such SA functionality/capability may be implemented in one communication device or in a distributed manner across a number of devices in a communication system.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventors: Bruce J. Currivan, Roger Fish, Harold Raymond Whitehead, Thomas J. Kolze