Patents Assigned to Broadcom
  • Patent number: 9398494
    Abstract: The present invention proposes methods in relation to providing for random access in a local area network environment, and encompasses, from an eNB perspective, defining (S1) a set of N dedicated preambles among a total number X of preambles, allocating (S4) a dedicated preamble to a terminal responsive to a connection request received from said terminal, and identifying (S9) said terminal when requesting random access, based on the allocated dedicated preamble contained in a random access request received. From a UE perspective, it encompasses requesting (S3) a connection to be established with a network transceiver device, receiving (S5) information on a dedicated preamble being allocated, and issuing (S8) a random access request to said network transceiver device which includes the allocated dedicated preamble. It also addresses correspondingly configured devices and computer program products.
    Type: Grant
    Filed: July 4, 2011
    Date of Patent: July 19, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Jing Han, Wei Bai, Haiming Wang
  • Patent number: 9398474
    Abstract: Apparatuses and methods are provided for determining operating modes of a communications link for a user equipment (UE) in a communications system based on whether the UE is configured for network coded transmission control protocol (TCP-NC). The operating modes can include physical layer channel error recovery, modulation, channel selection, among others. For example, physical layer channel error recovery can be scaled-back, or disabled, when TCP-NC is available because it is a redundant error recovery scheme. Accordingly, power can be saved, higher spectral efficiency can be achieved, and the user experience can be improved while the TCP-NC protocol recovers any data loss due to channel, errors.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: July 19, 2016
    Assignee: Broadcom Corporation
    Inventors: Kamesh Medapalli, Shimon Edelhaus
  • Patent number: 9397733
    Abstract: The present disclosure is directed to a system and method for determining an EIRP constraint for a data stream based on the direction that a beam carrying the data stream is to be radiated by an array of antennas rather than using a fixed EIRP constraint for all such beams. The system and method can use the direction the beam is to be radiated to determine a distance between the array of antennas and the closest point (or location) in which a human being can potentially be impacted by the radiated beam. For larger distances, the EIRP constraint can be adjusted upward, allowing for higher transmit power levels. Conversely, for comparatively smaller distances, the EIRP constraint can be adjusted downward, allowing for lower transmit power levels.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: July 19, 2016
    Assignee: Broadcom Corporation
    Inventor: Arogyaswami Paulraj
  • Patent number: 9398598
    Abstract: In some aspects, the disclosure is directed to methods and systems for transmitting packets (including but not limited to MU-MIMO packets). An access point communicating wirelessly with a plurality of devices can determine that a first packet for a first device of the plurality of devices has a first transmission duration. The access point can determine that a second packet for a second device of the plurality of devices has a second transmission duration shorter than the first transmission duration. The access point can adjust, based on the determination, a transmission power or a modulation and coding scheme to transmit the second packet during a third transmission duration. The third transmission duration can be greater than the second transmission duration.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: July 19, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: David Garrett, Jun Zheng, Nihar Jindal
  • Patent number: 9398319
    Abstract: A system, method, and apparatus for playback of multiple video elementary streams is presented herein. A host processor modifies the video elementary streams to allow a transport demultiplexer to distinguish among the plurality of the video elementary streams.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: July 19, 2016
    Assignee: BROADCOM INCORPORATED
    Inventors: Girish Hulmani, Arul Thangaraj, Sandeep Bhatia
  • Patent number: 9397876
    Abstract: A method and apparatus of synchronization and frame structure determination of a base station are disclosed. One method includes the base station determining an initial frame structure including an active region and a dummy region, wherein the regions are sets of OFDM symbols. The base station receives timing information from at least one of a mobile station and a second base station, wherein the mobile station is simultaneously communicating with the base station and the second base station. The base station adjusts its frame structure based at least in part on the timing information, wherein adjusting its frame structure includes at least one of adjusting the active region and the dummy region. The base station adjusts its internal timing to improve synchronization with the second base station based on the timing error information.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: July 19, 2016
    Assignee: Broadcom Corporation
    Inventors: Louay Jalloul, Djordje Tujkovic
  • Patent number: 9396187
    Abstract: A search request received from a user is converted to a search request integer value using an operational portion of a chip in network equipment. The search request integer value is compared to representative data integer values that were previously converted from a dataset of search terms using the operational portion, the representative integer values being stored on the chip. If the comparing is successful, a signal is transmitted to a second database, the signal being used to determine a message to be transmitted to the user that corresponds to the representative data integer.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: July 19, 2016
    Assignee: BROADCOM CORPORATION
    Inventor: Eddie Chung
  • Patent number: 9397384
    Abstract: A near field communications (NFC) device is disclosed that interacts with other NFC devices to exchange information and/or the data. An operator may touch, or be sufficiently proximate to, an antenna module of the NFC device to operate and/or control the NFC device. The antenna module includes antenna components that are characterized by a corresponding characteristic impedance. The touch, or sufficient proximity, of the operator changes the corresponding characteristic impedance of antenna components. The NFC device may determine a location of the touch, or proximity, of the operator based upon this change. The NFC device may interpret the location of the touch, or proximity, of the operator as information from the operator to operate and/or control the NFC device.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: July 19, 2016
    Assignee: Broadcom Corporation
    Inventors: David Grant Cox, Andrew Pienkowski
  • Patent number: 9397800
    Abstract: A duplexing method is provided that combines aspects of Frequency Division Duplex (FDD) and Time Division Duplex (TDD) methods in a network, such as a Long Term Evolution (LTE) network. The duplexing method may be implemented on an existing FDD network by replacing the FDD uplink (UL)-only radio frame with a full TDD radio frame having dynamically allocable UL and downlink (DL) sub-frames. Alternatively, the duplexing method may be implemented on an existing TDD network by adding a second frequency to pair with an existing frequency over which a FDD DL-only radio frame can be run.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: July 19, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Kaveh Ghaboosi, Manish Goldie Vemulapalli, Noel James Oates
  • Publication number: 20160205591
    Abstract: For use in offloading traffic to a wireless local area network (WLAN) a user equipment (UE) receives from a wireless wide area network at least a first set of thresholds having different thresholds corresponding to different types of data to be offloaded. The UE utilizes the threshold corresponding to a given type of data to evaluate whether an access node operating in the WLAN is suitable for offloading data of the given type. Only if the evaluated access node is determined to be suitable will the UE use it for offloading, and only for data of the given type. In other non-limiting embodiments the first set of thresholds has different thresholds corresponding to different data-types for different catergories (e.g., subscription levels) of the UE; and there may be a second set of thresholds with different thresholds corresponding to different classifications of different WLAN access nodes.
    Type: Application
    Filed: August 8, 2013
    Publication date: July 14, 2016
    Applicant: BROADCOM CORPORATION
    Inventors: Wei HONG, Na WEI, Wei BAI, Haiming WANG, Jari ISOKANGAS
  • Publication number: 20160204702
    Abstract: A hysteretic switching regulator with low output ripple voltage is disclosed herein. A detector and controller is specifically used to adjust a parameter of the hysteretic switching regulator to compensate for changes in one or more of input voltage and desired output voltage to maintain the output ripple voltage within some desired range.
    Type: Application
    Filed: March 6, 2015
    Publication date: July 14, 2016
    Applicant: Broadcom Corporation
    Inventors: Aravind Kumar PADYANA, Iuri Mehr, Jay Ackerman, Mark Rutherford, Daniel Melendy, Eric Martin Hayes
  • Publication number: 20160202932
    Abstract: A Ternary Content-Addressable Memory (TCAM) system is disclosed. In the system, writes to the memory are performed over several cycles. In order to ensure full visibility of all entries within the TCAM, a cache memory is provided. At the start of the TCAM write, the cache is written with the contents of the new entry. The cache entry is activated for the period of time that the corresponding entry in the TCAM is deactivated for rewriting. For each input value provided to the system, both the TCAM and the cache are checked for potential matches. The results of these checks are compared at output. In this manner, all entries within the TCAM can maintain full visibility even throughout a write period.
    Type: Application
    Filed: November 24, 2015
    Publication date: July 14, 2016
    Applicant: Broadcom Corporation
    Inventor: Sachin Prabhakarrao KADU
  • Publication number: 20160204989
    Abstract: Aspects of the subject disclosure may include, for example, a channel learning entity is configured to receive a priori network data via a transceiver. The channel learning entity generates at least one measurement of the communication environment based on the a priori network data, and generates first report data for transmission via the transceiver based on the at least one measurement of the communication environment. Other embodiments are disclosed.
    Type: Application
    Filed: March 21, 2016
    Publication date: July 14, 2016
    Applicant: BROADCOM CORPORATION
    Inventor: Olivier van de Wiel
  • Patent number: 9392295
    Abstract: Various methods and systems are provided for adaptable media processing architectures. In one example, among others, an adaptable coding architecture for servicing media streams includes media processing resources and a controller that supports a first media stream by placing media processing pipeline resources in a single stream configuration and that causes a transition from the single stream configuration to a multiple stream configuration of the media processing resources. For example, the transition may be made to simultaneously support encoding or decoding another media stream. In another example, a device includes media processing resources and a controller that causes an adaptive reconfiguration of media processing resources to support simultaneous coding related processing of both a new media stream and at least one ongoing media stream, which may cause a reallocation of at least a part of the media processing resources from an ongoing media stream to the new media stream.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 12, 2016
    Assignee: Broadcom Corporation
    Inventor: James Bennett
  • Patent number: 9391762
    Abstract: A switch arrangement is described which enable the design of a flexible front end allowing many individual and combinations of frequency band allocations to share a single antenna simultaneously. An apparatus using the switch arrangement is also described. The switch arrangement provides a single pole switch for each set of band specific filtering. The band specific filtering is connected to the pole of a respective single pole switch. The single pole switch has contact points enabling connection to of the filtering to an antenna switch both with and without a frequency selective component in the signal path. The frequency selective component allows sharing of the antenna by two or more frequency band allocations to enable simultaneous use of different radio access technologies, MIMO or Carrier Aggregation through a single antenna. When not required the frequency selective component can be switched out of the signal path to reduce insertion loss.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: July 12, 2016
    Assignee: BROADCOM CORPORATION
    Inventor: Seppo Olavi Rousu
  • Patent number: 9391659
    Abstract: A method and apparatus for cancelling, from signals received by a radio device in a first frequency band, interference generated by the radio device in the first frequency band when the radio device transmits simultaneously radio signals on at least a second frequency band.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: July 12, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Pierre Baudin, Mikael Guenais
  • Patent number: 9391867
    Abstract: A device for instrumentation and traffic disposition of a network using one or more time-stamps may include a receiving port to receive a data packet. A device configuration module may be configured to determine whether the device is a boundary device located on a boundary of an instrumented sub-network of the network. If the determination is made that device is the boundary device, a frame processing module may insert a first time-stamp at a first offset from a frame checksum (FCS) field in a data frame associated with the data packet. Otherwise, a corresponding time-stamp may be inserted at a second offset from the FCS field. The one or more time-stamps may enable a receiving endpoint device of the network to determine timeliness information associated with the data packet.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: July 12, 2016
    Assignee: Broadcom Corporation
    Inventor: Mark David Griswold
  • Patent number: 9391665
    Abstract: Embodiments provide a method and apparatus for performing time division duplex communication, such as may be performed over a wireless communications network. In the embodiments a first circuit pathway is used to transmit a first radio frequency signal in a transmission mode and a second circuit pathway is used to receive a second radio frequency signal in a reception mode. In the reception mode, the first radio frequency signal is switched to an alternate circuit pathway. This may be performed by a radio frequency integrated circuit or by other control circuitry. Switching to an alternate circuit pathway reduces leakage of the first radio frequency signal into the second radio frequency signal.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: July 12, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Lauri Niskanen, Seppo Rousu, Juha Valtanen
  • Patent number: 9392549
    Abstract: Where receiver performance at a User Equipment (UE) is similar using a coarse precoder codebook as using a fine resolution precoder codebook, the signaling of a two-component precoder codebook is modified such that a precoder codeword is signaled to the UE in only a portion of the physical resources allocated for precoder codeword signaling to the UE. The remaining portion of the allocated physical resources is used to signal control information to improve the UE's performance.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: July 12, 2016
    Assignee: Broadcom Corporation
    Inventors: Amin Mobasher, Sam Alex, Louay Jalloul
  • Patent number: 9391618
    Abstract: A high-voltage fail-safe input/output (I/O) interface circuit includes a voltage-divider circuit coupled to an I/O pad of the I/O interface circuit, and a selector circuit configured to couple, to a power supply line of the I/O interface circuit one of an output of the voltage-divider circuit or and I/O supply voltage. The voltage-divider circuit and the selector circuit are implemented on the same chip with the I/O interface circuit.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: July 12, 2016
    Assignee: Broadcom Corporation
    Inventor: Darrin Robert Benzer