Patents Assigned to Broadcom
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Patent number: 9374716Abstract: Embodiments provide a feedback indicator for coordinated multi-point operations of various coordinated multi-point schemes and/or scenarios. An exemplary embodiment involves generating a feedback indicator for coordinated multi-point operations, the feedback indicator indicating a recommendation for a CoMP controller entity to request signaling of multi-point feedback information with respect to multiple coordinated multi-point transmission points, and signaling the generated feedback indicator for coordinated multi-point operations to the CoMP controller entity.Type: GrantFiled: February 26, 2013Date of Patent: June 21, 2016Assignee: BROADCOM CORPORATIONInventors: Mihai Enescu, Tommi Tapani Koivisto, Helka-Liina Määttänen
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Patent number: 9374769Abstract: Embodiments provide an enhanced approach for Higher Priority Public Land Mobile Network (HPPLMN) search. In one embodiment, information acquired during a search (for each detected cell per frequency channel) is saved in a database and persisted in the database based on a validity time. An idle mode-to-connected mode transition by the UE, rather than aborting the search, only suspends the search for it to be resumed at a later time upon a connected mode-to-idle mode transition by the UE. Saved search data that is valid at the time of the transition is maintained and the frequency channel(s) associated with it is not re-searched in the current search. In an embodiment, the search is resumed based on weights that are associated with frequency channels, where a weight indicates a priority for visiting the frequency channel.Type: GrantFiled: December 5, 2012Date of Patent: June 21, 2016Assignee: Broadcom CorporationInventors: Arzad Kherani, Anand Devidas Kashikar
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Patent number: 9374127Abstract: An apparatus comprises a tunable duplexer configured to output a transmission signal to be wirelessly transmitted from the apparatus at a transmission frequency, and configured to input a reception signal wirelessly received by the apparatus at a reception frequency, a tuning device connected to the tunable duplexer, configured to control a balance between impedances of an antenna port and of a balance port of the tunable duplexer, a transmitting device configured to, during a predetermined time period, wirelessly transmit a specific transmission signal for calibration of the tunable duplexer, a receiving device configured to, during the predetermined time period, wirelessly receive the specific transmission signal transmitted by the transmitting device, and a measuring device configured to, during the predetermined time period, measure the power of the specific transmission signal received by the receiving device.Type: GrantFiled: December 16, 2013Date of Patent: June 21, 2016Assignee: BROADCOM CORPORATIONInventors: Teijo Henrikki Lehtinen, Antti Oskari Immonen
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Patent number: 9374245Abstract: A radio device receives a band-limited signal and estimates signal components beyond the band edges to extend the signal and eliminate the band-limited effects. The extended signal is transformed to the time domain to produce an estimate of the true time domain channel.Type: GrantFiled: September 6, 2013Date of Patent: June 21, 2016Assignee: Broadcom CorporationInventors: David Christopher Garrett, Nihar Jindal, Eric Jon Ojard, Alfonso Cano Pleite
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Patent number: 9374200Abstract: A radio device/user equipment determines that a later received grant of bundled uplink resources collides with an earlier received grant of bundled uplink resources. The earlier received grant has associated with it an active re-transmission process. In response to that collision determination, at least a re-transmission (HARQ) buffer associated with the earlier received grant is flushed. In one embodiment all HARQ buffers are flushed; in another the HARQ buffer associated with the earlier received grant is flushed while the one associated with the later received grant is not. Several ways are described to determine whether there is a collision: whether the later received grant aligns with a boundary of the resources granted by the earlier received grant, and whether there is an actual collision among the different HARQ processes. Calculating HARQ process numbers is also described where an offset is used to account for the grants allocating bundled TTIs.Type: GrantFiled: October 11, 2013Date of Patent: June 21, 2016Assignee: BROADCOM CORPORATIONInventors: Kalle Petteri Kela, Lauri Johannes Eerolainen
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Methods and apparatuses of measuring impulse noise parameters in multi-carrier communication systems
Patent number: 9374257Abstract: A method and apparatus for measuring and tracking Impulse Noise parameters in a communication system are described. The method includes estimating one or more parameters of the impulse noise, the parameters including a period, an offset and duration of the impulse noise.Type: GrantFiled: March 15, 2006Date of Patent: June 21, 2016Assignee: Broadcom CorporationInventor: Hossein Sedarat -
Patent number: 9374190Abstract: A method, apparatus and computer program product are provided for enhancing data exchange between an access point (AP) and station (STA) in a wireless network when the exchange must be interrupted for the AP to perform other services while data remains buffered for later exchange. AP downlinks an indicator that more data remains for exchange together with a request for the STA to enter sleep mode for a duration scheduled by the AP. Sleep duration may be sent in the medium access control (MAC) header of a data frame, with the indicator of more data and the indicator of the sleep mode request being contained in the frame control (FC) segment of the MAC header. The STA may uplink an acknowledgement (ACK) of the sleep mode. Alternatively, the AP may downlink an ACK of the STA's indication of more data confirmation together with sleep mode indication and duration.Type: GrantFiled: December 4, 2013Date of Patent: June 21, 2016Assignee: BROADCOM CORPORATIONInventors: Timo Kalevi Koskela, Anna Pantelidou, Samuli Turtinen, Sami-Jukka Hakola
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Patent number: 9374609Abstract: A technique of using a remote control device to identify a source for transferring content on a home network, a renderer for rendering the content and a pathway within a home network to couple the source to the renderer to transfer the content. The remote control device then transmits control information to the source to set a control parameter value within the source to send the content and transmits control information to the renderer to set a control parameter value within the renderer to receive the content. The commands from the remote configure parameter values associated with a media layer in the source and/or the renderer to initiate a hand-shake to effect the content transfer, so that the source and the renderer need not initiate the hand-shake between themselves.Type: GrantFiled: January 17, 2014Date of Patent: June 21, 2016Assignee: BROADCOM CORPORATIONInventors: Jeyhan Karaoguz, Stephen Ray Palm, Xuemin Chen
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Publication number: 20160173305Abstract: Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications. An appropriately designed phase rotation vector and/or appropriately designed cyclic shift delays (CSDs) are applied to respective sub-band components of the preamble. With appropriately designed CSDs, certain fields within the preamble are not modified. For example, a legacy short training field (L-STF) of the preamble is not changed when using appropriately designed CSDs. The respective CSDs may be implemented as integer multiples of a common CSD (e.g., 0×CSD, 1×CSD, 2×CSD, etc. such that one of the values of such a CSD vector may be zero [0], another may be the common CSD itself, etc.). Also, by employing an appropriately designed phase rotation vector and integer multiples of a CSD to a preamble, the respective peak to average power ratio (PAPR) between different respective fields within the preamble may be minimized.Type: ApplicationFiled: February 24, 2016Publication date: June 16, 2016Applicant: BROADCOM CORPORATIONInventors: Jun Zheng, Min Chuin Hoo, Vinko Erceg
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Publication number: 20160174278Abstract: A method is provided for facilitating device-to-device communication. The method may include causing a message to be sent to a first device to trigger the first device to transmit a reference signal. The method may further include causing a request for a channel quality indication to be sent to a second device. The request may indicate that the channel quality indication is to be based on measurement of the reference signal. The method may additionally include receiving the channel quality indication in response to the request. The channel quality indication may be indicative of a link quality between the first device and the second device. The method may also include determining based on the received channel quality indication whether to cause establishment of a device-to-device link between the first device. A corresponding apparatus and computer program product are also provided.Type: ApplicationFiled: January 4, 2016Publication date: June 16, 2016Applicant: BROADCOM CORPORATIONInventors: Chunyan GAO, Haiming WANG, Gilles CHARBIT
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Publication number: 20160174226Abstract: Range extension within single user, multiple user, multiple access, and/or MIMO wireless communications. A given communication device designed and implemented for operation in accordance with a given communication protocol, standard, and/or recommended practice operates in accordance with a down-clocked manner to effectuate operation in accordance with at least one other communication protocol, standard, and/or recommended practice. For example, first channelization may undergo down-clocking by a particular and desired ratio to generate a second channelization. As such, at least one portion of a physical layer (PHY) of a given communication device may be leveraged for use in at least one other or additional operational mode based upon the down-clocking employed. Sub-channel and/or channel adaptation may be made based upon any of a number of considerations (e.g., independently by one device, cooperatively by two or more devices, local and/or remote operating condition(s) [or changes thereof], etc.).Type: ApplicationFiled: February 24, 2016Publication date: June 16, 2016Applicant: BROADCOM CORPORATIONInventors: Ron Porat, Vinko Erceg
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Publication number: 20160174260Abstract: Aspects of a method and system for carrier sense multiple access with collision avoidance (CSMA/CA) with directional transmission are presented. Aspects of the system may include a communicating device (DEV), which transmits a portion of a PDU utilizing omnidirectionally transmitted signals and a subsequent portion of the PDU utilizing directionally transmitted signals. In an exemplary system the communicating DEV may transmit a frame, which represents a physical layer PDU. The frame may comprise a physical layer convergence procedure (PLCP) preamble that is transmitting utilizing omnidirectionally transmitted signals (omni preamble), a PLCP header that is transmitted utilizing omnidirectionally transmitted signals (omni header), a PLCP preamble that is transmitted utilizing directionally transmitted signals (directional preamble) and a physical layer service data unit (PSDU) field, or data, field, which is transmitted utilizing directionally transmitted signals (directional data).Type: ApplicationFiled: February 22, 2016Publication date: June 16, 2016Applicant: BROADCOM CORPORATIONInventor: Saishankar NANDAGOPALAN
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Publication number: 20160173870Abstract: Sample adaptive offset (SAO) in accordance with video coding. SAO filtering may be performed before de-blocking processing (e.g., in accordance with video signal decoding and/or encoding). For example, a receiver and/or decoder communication device may receive signaling from a transmitter and/or encoder communication device that includes various band offsets. Corresponding band indices may be determined via analysis of the received video signal (e.g., received from the transmitter and/or encoder communication device), inferentially without requiring signaling of such band indices from the transmitter and/or encoder communication device. Upon appropriate analysis of one or more largest coding units (LCUs) generated from the video signal to determine a pixel value distribution (e.g., which may be using a histogram in one instance), then based on that pixel value distribution, the band indices are identified and the band offsets applied thereto.Type: ApplicationFiled: February 25, 2016Publication date: June 16, 2016Applicant: BROADCOM CORPORATIONInventors: Peisong Chen, Wade K. Wan
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Patent number: 9369320Abstract: An all outdoor unit communication system, for performing cross polarization interference cancellation, is provided. The system includes a first outdoor unit (ODU) configured to receive a first directionally polarized signal, a first RF module configured to convert the first directionally polarized signal into a first in-phase (I) component and a first quadrature (Q) component, and a first modem configured to up-convert the first I and Q components from baseband into a first directionally polarized intermediate frequency (IF) signal. The system being configured to communicate, via an interconnect coupled to the first ODU, a second directionally polarized IF signal to the first ODU, and where the first modem is further configured to utilize the second directionally polarized IF signal to cancel out at least a portion of a first cross-polarization leakage at the first ODU.Type: GrantFiled: May 20, 2015Date of Patent: June 14, 2016Assignee: Broadcom CorporationInventors: Yaacov Sturkovich, Eitan Tsur
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Patent number: 9369173Abstract: An RF structure includes a PA, a PA ground switch coupled between the PA output and ground, a LNA, and a LNA ground switch coupled between the LNA input and ground. The RF structure includes a plurality of directional antenna structures, each including an antenna, a transmit quarter wavelength circuit coupled between the PA output and the antenna, a receive quarter wavelength circuit coupled between the antenna and the LNA input, and an antenna switch coupled between the antenna and ground. Switch control circuitry controls the PA ground switch, the LNA ground switch, and the plurality of antenna switches during transmit and receive operations to control the flow of RF receive signals from the antennas to the LNA and the flow of RF transmit signals from the PA to the antennas. The transmit and receive quarter wavelength circuits may be traces or be constructed of lumped circuit elements.Type: GrantFiled: February 27, 2015Date of Patent: June 14, 2016Assignee: Broadcom CorporationInventor: Seunghwan Yoon
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Patent number: 9369448Abstract: Disclosed are various embodiments for facilitating network security parameter distribution and generation in a converged network incorporating multiple heterogeneous link layer networking technologies. Embodiments are provided for connecting network devices through multiple heterogeneous link layer networking technologies using a converged network password. Embodiments are provided for connecting network devices through multiple heterogeneous link layer networking technologies using a pairing event protocol, such as, for example, a push button protocol.Type: GrantFiled: June 28, 2011Date of Patent: June 14, 2016Assignee: BROADCOM CORPORATIONInventors: Philippe Klein, Avi Kliger
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Patent number: 9369880Abstract: Example embodiments generally relate to adapting a transmission via first wireless technology to avoid interference with a reception via a second wireless technology. For example, a user equipment (e.g. cell phone) can include radios operating according to first and second wireless radio technologies, which can include Long Term Evolution (LTE) and a technology using the industrial, scientific and medical (ISM) frequency band. When a priority request is asserted by a radio operating in the ISM frequency band, the LTE radio may abort a scheduled transmission when certain “transmission abort criteria” are satisfied.Type: GrantFiled: September 30, 2013Date of Patent: June 14, 2016Assignee: Broadcom CorporationInventors: Amit Choudhary, Arzad Kherani
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Patent number: 9369859Abstract: A method, apparatus and computer program for discovery of network devices and application user. An example method for use in an access point or station may comprise receiving a discovery request from an application, the application running thereon, the discovery request including at least one application level identifier, causing monitoring of a discovery channel for at least one device within a proximate distance, and upon discovery of a device associated with the application level ID, providing an indication to the application of the discovery of the device.Type: GrantFiled: April 2, 2014Date of Patent: June 14, 2016Assignee: BROADCOM CORPORATIONInventors: Sami-Jukka Hakola, Guillaume Sebire, Samuli Turtinen, Vlora Rexhepi
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Patent number: 9369940Abstract: A system and method for providing a mobile handheld multi-media gateway and phone. Various aspects of the present invention may comprise a first communication interface module that is adapted to communicatively couple the mobile telephone to a mobile telephone communication network. A second communication interface module may be adapted to communicatively couple the mobile telephone to a computer communication network. At least one module may utilize the second communication interface module to communicate with the computer communication network to establish an independent network presence for the mobile telephone on the computer communication network. The mobile telephone may, for example, be established as an autonomous addressable device on the computer communication network.Type: GrantFiled: January 21, 2015Date of Patent: June 14, 2016Assignee: Broadcom CorporationInventors: Jeyhan Karaoguz, James D. Bennett
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Patent number: 9369157Abstract: 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: GrantFiled: October 23, 2014Date of Patent: June 14, 2016Assignee: BROADCOM CORPORATIONInventor: Ahmadreza (Reza) Rofougaran