Patents Assigned to Broadcom
  • Patent number: 9369231
    Abstract: A method, system and computer program product to adjust transfer rates on conductors in a multi-conductor cable comprising monitoring signals received on each conductor, determining a Signal to Noise Ratio (SNR) for each conductor and adjusting a transfer rate on one or more conductors based on the corresponding SNR. In an embodiment the multi-conductor cable is a twisted pair Ethernet cable. The method further comprises determining whether a conductor is transmitting at an optimal transfer rate as a function of its SNR, calculating an optimal transfer rate for each conductor as a function of its SNR and periodically measuring a change in SNR on each conductor. If the change in SNR is greater than a predetermined threshold, then the transfer rate is re-calculated for the conductors requiring transfer rate adjustment as a function of SNR.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: June 14, 2016
    Assignee: Broadcom Corporation
    Inventors: Kevin Brown, Scott R. Powell, Gottfried Ungerboeck
  • Patent number: 9369240
    Abstract: A method, apparatus and computer program product are provided for use in a communication device. The method may add a transmission type identifier to a transmission opportunity (TXOP) request packet, wherein the transmission type identifier includes one or more bits indicating a request for either Hybrid Automatic Repeat Request (HARQ) operation or for non-HARQ operation. The method may further causes the communication device to transmit the TXOP request packet to a TXOP responder and receives a subsequent transmission from the TXOP responder indicating acceptance, modified acceptance, or rejection of the request. A corresponding apparatus and computer program product are also provided.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: June 14, 2016
    Assignee: Broadcom Corporation
    Inventors: Juho Mikko Oskari Pirskanen, Anna Pantelidou
  • Patent number: 9369206
    Abstract: Embodiments provide systems and methods for enabling the support of multiple Ethernet Passive Optical Network over Coax (EPoC) channels, which can be bonded together into a single high-speed channel. The multiple EPoC channels can be configured according to available spectrum, such that they occupy one or more, frequency contiguous or separated, segments of the available spectrum. The size (number of sub-carriers) of each of the channels can be configured according to embodiments based on the available spectrum and/or other requirements (e.g., EPoC emission requirements, existing services, etc.). Further, within each channel, individual sub-carriers can be configured independently, including turning each sub-carrier on/off and/or specifying the symbol bit loading for the sub-carrier independently of other sub-carriers in the channel.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: June 14, 2016
    Assignee: Broadcom Corporation
    Inventors: Edward Wayne Boyd, Mark E. Laubach
  • Patent number: 9369212
    Abstract: A system, method and apparatus for power saving using burst-mode transmission over point-to-point physical connections. In one embodiment, a physical layer device (PHY) is provided that includes a data detector that is configured to generate a first control signal upon receipt of a non-idle code group over an interface between the PHY and a media access control (MAC) device and to generate a second control signal when all data received from the MAC device has been transmitted by the physical layer device. The PHY also includes a laser for transmission of data over an optical network cable, the laser being configured to perform a first transition from an off state to an on state based on the first control signal, and to perform a second transition from the on state back to the off state based on the second control signal.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: June 14, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Glen Kramer, Lowell David Lamb, Jaroslaw Wojtowicz, Ryan Edgar Hirth
  • Patent number: 9369939
    Abstract: The invention concerns a method and an apparatus for device-to-device communication route establishment within a mobile communication system. In the method a mobile node determines that a remote node is within radio coverage of the mobile node. The mobile node determines a need to transmit a data message to a destination node. The mobile node transmits a request message to the base station. In reply the mobile node receives a message including a route to the destination node. The route includes at least an identifier of the remote node. The mobile node obtains a radio resource for radio communication between the mobile node and the remote node from the base station. Thereupon, the mobile node transmits the data message to the remote node using the radio resource obtained.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: June 14, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Bin Zhou, Jing Xu, Haifeng Wang, Zhenhong Li
  • Patent number: 9367518
    Abstract: Aspects of a method and system for efficient full resolution correlation may include correlating a first signal with a second signal at a rate corresponding to a first discrete signal, wherein each sample of the first signal may be generated by summing a plurality of consecutive samples from the first discrete signal, and the second signal may be generated by summing the plurality of consecutive samples from a second discrete signal. The correlating may be performed by a matched filter and/or a correlator. The first signal comprising N samples may be generated by summing L consecutive samples for each of the N samples from the first discrete signal comprising N*L samples. The second signal comprising N samples may be generated by summing L consecutive samples for each of the N samples from the second discrete signal comprising N*L samples.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: June 14, 2016
    Assignee: Broadcom Corporation
    Inventors: Francis Swarts, Mark Kent
  • Patent number: 9370017
    Abstract: The present disclosure is directed to a system and method for selecting a sub-group of user terminals (UTs) among a group of UTs served by a sector of a cellular network to schedule independent data streams for transmission to over the same time-frequency interval. In one embodiment, the sub-group of UTs is selected to limit inter-user interference among the sub-group of UTs. In another embodiment, the sub-group of UTs is selected to limit inter-user interference experienced by a UT that is at or near the boundary of the sector that serves the sub-group of UTs.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: June 14, 2016
    Assignee: Broadcom Corporation
    Inventors: Nihar Jindal, Murat Mese, Arogyaswami Paulraj
  • Patent number: 9369978
    Abstract: A mobile device receives a signal, from a base station, comprising a primary synchronization sequence (PSS) and a secondary synchronization sequence (SSS). The mobile device utilizes two different sampling rates to perform the PSS synchronization and the SSS detection individually. For example, the mobile device synchronizes to the received PSS at a first sampling rate such as 0.96 MHz, which is determined based on the PSS transmission rate and/or the length of the received PSS. The mobile device detects the received SSS at a second sampling rate such as 1.92 MHz, which equals to the sampling rate for an analog-to-digital conversion at the mobile device. The received PSS and associated symbol timing are detected through the PSS synchronization to support the SSS detection. The detected SSS is used to acquire cell-specific parameters such as cell ID. The acquired cell-specific parameters ensure proper communications between the mobile device and the base station.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: June 14, 2016
    Assignee: Broadcom Corporation
    Inventors: Francis Swarts, Mark Kent
  • Publication number: 20160164745
    Abstract: A number of features for enhancing the performance of a communication system, in which data is transmitted between a base station and a plurality of subscriber stations located different distances from the base station, are presented. The power transmission level, slot timing, and equalization of the subscriber stations are set by a ranging process. Data is transmitted by the subscriber stations in fragmented form. Various measures are taken to make transmission from the subscriber stations robust. The uplink data transmission is controlled to permit multiple access from the subscriber stations.
    Type: Application
    Filed: January 29, 2016
    Publication date: June 9, 2016
    Applicant: Broadcom Corporation
    Inventors: Thomas J. QUIGLEY, Jonathan S. Min, Lisa V. Denney, Henry Samueli, Sean F. Nazareth, Feng Chen, Fang Lu, Christopher R. Jones
  • Publication number: 20160164644
    Abstract: There is provided, for example, an apparatus, which is caused to select a transmission power configuration for a communication with at least one user terminal taking place on component carriers of a carrier aggregation configuration within a shared band, wherein the selection is between a low transmission power configuration applying a transmission power below a predetermined power threshold without a listen-before-talk approach and a high transmission power configuration applying a transmission power of at least the predetermined power threshold; and upon detecting that the selected transmission power configuration needs to be informed, cause an indication of the selected transmission power configuration to the at least one user terminal and at least one secondary cell.
    Type: Application
    Filed: February 12, 2016
    Publication date: June 9, 2016
    Applicant: BROADCOM CORPORATION
    Inventors: Gilles CHARBIT, Tao CHEN
  • Publication number: 20160164649
    Abstract: Information about a set of cells potentially taking part in coordinated multipoint transmission is obtained, information about at least one of reference signal configuration and data region size configuration for each of the set of cells is obtained, further an indication of which of the reference signals configuration and the data region size configuration should be assumed in resource mapping for data is obtained, and data according to the resource mapping is received. Information about at least one of reference signal configuration and data region size configuration for each cell of a set of cells potentially taking part in coordinated multipoint transmission is provided, and an indication of which of the reference signals configuration and the data region size configuration should be assumed in resource mapping for data is provided.
    Type: Application
    Filed: February 10, 2016
    Publication date: June 9, 2016
    Applicant: Broadcom Corporation
    Inventor: Tommi KOIVISTO
  • Publication number: 20160161972
    Abstract: A scaled voltage supply to supply voltage biases to circuits in voltage zones. The scaled voltage supply includes a master voltage corresponding to a voltage drop across a master-upper rail having a voltage Vdd and a master-lower rail having a voltage Vss=0. Further, the supply includes a voltage-divider network dividing the master voltage Vdd into intermediate voltages ?Vdd, ?Vdd, etc., wherein ? and ? are predetermined constants. These intermediate voltages scale with the master voltage and are supplied to the voltage zones using non-invasive soft rails. In one implementation the soft rails use voltage mirrors to supply the intermediate voltages to the circuits within voltage zones.
    Type: Application
    Filed: January 20, 2015
    Publication date: June 9, 2016
    Applicant: BROADCOM CORPORATION
    Inventors: Junhua TAN, Yuan Yao, Jing Wang, Hui Pan
  • Patent number: 9362948
    Abstract: A system, method, and computer program product are provided for saving and restoring a compression-decompression state. In operation, data is processed, the processing including compressing or decompressing the data. Additionally, a state of the processing is saved. Further, the state of the processing is restored.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: June 7, 2016
    Assignee: Broadcom Corporation
    Inventors: Kaushik Kuila, Robert Laker
  • Patent number: 9360342
    Abstract: A system for navigation along a desired route on a desired future date may include a map interface operable to display a traffic condition and a travel time received via a communication network, and an automobile navigation network communicatively coupled to the communication network. The automobile navigation network may estimate the traffic condition and the travel time for travel along the desired route on the desired future date based on historical travel information, current traffic information and current weather information. Information regarding the estimated travel conditions may be automatically communicated to the map interface. The traffic condition may include geographic location information and/or route information. The historical travel information may include historical traffic information.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: June 7, 2016
    Assignee: Broadcom Corporation
    Inventor: Gary R. Ignatin
  • Patent number: 9362866
    Abstract: A communication device, such as a smart phone, includes an envelope tracking power supply modulator. The envelope tracking power supply modulator receives an envelope tracking reference signal. A baseband controller pre-distorts the envelope tracking reference signal responsive to distortion caused by the envelope tracking power supply modulator. For instance, the pre-distortion may modify the nominal envelope tracking reference signal so that, after the modulator acts on the modified reference signal, the output of the modulator has increased linearity.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: June 7, 2016
    Assignee: Broadcom Corporation
    Inventors: Debopriyo Chowdhury, Ali Afsahi
  • Patent number: 9363517
    Abstract: An encoder may implement an indexed color history that stores color values for previously encoded pixels. The encoder may obtain a current pixel or current group of pixels for encoding and determine whether to encode the current pixel using the indexed color history. In doing so, the encoder may compare a color value of the current pixel with color values of the previously coded pixels to determine whether the current pixel is sufficiently similar to a previously coded pixel color value, e.g., by satisfying one or more similarity criteria. When the similarity criteria are satisfied, the encoder may encode the current pixel as an index value referencing the entry in the indexed color history storing a color value that satisfies the similarity criteria. When the similarity criteria are not satisfied, the encoder may encode the current pixel using another encoding method or technique.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: June 7, 2016
    Assignee: Broadcom Corporation
    Inventors: Alexander Garland MacInnis, Frederick George Walls
  • Patent number: 9362986
    Abstract: A wireless power system includes a wireless power transmit and receive units. The wireless power transmit unit includes a wireless power transmit circuit that generates a wireless power magnetic field and a transmit unit transceiver that transceives a communication regarding the wireless power magnetic field in accordance with a control channel protocol. The wireless power receive unit includes a wireless power receive circuit, a transceiver, and a processing module. The wireless power receive circuit converts the wireless power magnetic field into a voltage.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: June 7, 2016
    Assignee: Broadcom Corporation
    Inventors: Jeyhan Karaoguz, John Walley, Ahmadreza Rofougaran, Nambirajan Seshadri, Reinierus Hendricus Maria Van Der Lee
  • Patent number: 9362940
    Abstract: A parallel sample-and-hold circuit includes a sampling switch and a hold capacitor for each of the ADC and MDAC of a converter stage for a pipelined ADC. Each sampling switch couples the analog input of the first converter stage to its hold capacitor at the time a sample is desired to be taken. After the sample is placed on the hold capacitor, the sampling switch is opened and the hold capacitor stores the sample. To compensate for mismatches in the signal paths of these sample-and-hold circuits, a compensation switch is further used. The compensation switch couples the terminals of the hold capacitors together, creating a parallel sample-and-hold circuit. The compensation switch is controlled such that it is closed after the sampling switches are opened to equalize a voltage of the samples.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: June 7, 2016
    Assignee: Broadcom Corporation
    Inventor: Jan Mulder
  • Patent number: 9363847
    Abstract: Methods and apparatus are disclosed that facilitate discontinuous reception via a primary cell and one or more secondary cells that have different TDD UL/DL subframe configurations including overlapping subframes, such as in an instance in which a UL subframe of a secondary cell overlaps with a corresponding DL subframe of the primary cell. A method may define an active state of a primary cell to be larger than an active state of a secondary cell in a TDD network that supports carrier aggregation. The method may also provide for discontinuous reception via the primary cell and the secondary cell in accordance with different TDD UL/DL subframe configurations and also in accordance with the respective active states of the primary and secondary cells.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: June 7, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Gilles Charbit, Jing Han, Haiming Wang, Wei Bai, Erlin Zeng
  • Patent number: 9363055
    Abstract: Methods, apparatus and computer program products configure a sounding reference signal (SRS) for a segment carrier that serves as a contiguous bandwidth extension of a component carrier, such as a component carrier that is backwards compatible with prior releases of a mobile terminal. In the context of a mobile terminal, the method receives a triggering message that identifies respective configurations of the SRS for the component carrier and the associated segment carrier. The configuration of the SRS for the component carrier is different than the configuration of the SRS for the segment carrier. The method also causes the SRS to be transmitted in accordance with the respective configurations identified by the triggering message via uplink subframes of the component carrier and the segment carrier.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: June 7, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Erlin Zeng, Haiming Wang, Chunyan Gao, Wei Hong, Wei Bai, Jing Han, Gilles Charbit