Patents Assigned to Broadcom
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Publication number: 20160269085Abstract: Explicit feedback format within single user, multiple user, multiple access, and/or MIMO wireless communications. A beamformer provides a first communication to a beamformee, and based thereon, the beamformee may ascertain certain characteristics associated with the type and format of feedback to be provided to the beamformee via a second communication from the beamformee to the beamformer. For example, the first communication may include indication of a current operational mode, such as whether it is in accordance with single-user multiple input multiple output (SU-MIMO) or multi-user multiple-input-multiple-output (MU-MIMO). Also, the first communication may indicate a requested steering matrix's rank to be employed in accordance with subsequent beamforming by the beamformer. Also, additional information such as that pertaining to per-tone SNR values for each respective space-time stream, per-tone or per-sub-band eigen-values, the particular channel width being employed (e.g., 20, 40, 80, or 160 MHz), etc.Type: ApplicationFiled: May 23, 2016Publication date: September 15, 2016Applicant: BROADCOM CORPORATIONInventors: Joonsuk Kim, Ron Porat, Vinko Erceg
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Patent number: 9444741Abstract: Disclosed are various embodiments for facilitating network flows in a networked environment. In various embodiments, a switch transmits data using an egress port that comprises an egress queue. The switch sets a congestion notification threshold for the egress queue. The switch generates a drain rate metric based at least in part on a drain rate for the egress queue, and the congestion notification threshold is adjusted based at least in part on the drain rate metric.Type: GrantFiled: September 30, 2013Date of Patent: September 13, 2016Assignee: BROADCOM CORPORATIONInventors: Puneet Agarwal, Bruce Hui Kwan, William Brad Matthews, Vahid Tabatabaee
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Patent number: 9444498Abstract: A transceiver circuit including a digital-to-analog converter, a filter coupled to the digital-to-analog converter, a passive mixer coupled to the filter, via a buffer and a multi-stage power amplifier coupled to the passive mixer via a passive amplifier. A transmitter and method for amplifying a RF signal for transmission are also provided.Type: GrantFiled: December 18, 2012Date of Patent: September 13, 2016Assignee: Broadcom CorporationInventors: Rahul Magoon, Michael (Meng-An) Pan, Ahmad Mirzaei, Mohyee Mikhemar
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Patent number: 9445426Abstract: Aspects of the invention en-compass an apparatus and corresponding method and computer program product, wherein the apparatus comprises a controller, configured to cause communication via a first and at (east a second radio access technology, provide for setting of rules, which permit the apparatus to autonomously deny communication via the first radio access technology, detect a predetermined event in terms of the second radio access technology, responsive thereto, apply the rules and deny a communication via the first radio access technology, detect an occurrence of a further predetermined event in terms of the second radio access technology, while the rules prohibit to further deny a communication via the first radio access technology, decide, responsive thereto, to violate the rules and to permit to deny a further communication via the first radio access technology, and cause transmission of a violation indication to a destination of the communication via the first radio access technology.Type: GrantFiled: August 6, 2012Date of Patent: September 13, 2016Assignee: BROADCOM CORPORATIONInventors: Wei Hong, Jukka Tapio Ranta, Haiming Wang, Na Wei
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Patent number: 9445254Abstract: An electronic device may communicate according to a first communication standard and a second communication standard. The first communication standard may have a longer communication range than the second communication standard. The electronic device may send a capability indication through the first communication standard. The capability indication may indicate the electronic device is capable of communicating according to the second communication standard with a shorter communication range than the first communication standard. The electronic device may discover a second electronic device capable of communicating according to the second communication standard and positioned outside of a non-extended communication range of the second communication standard.Type: GrantFiled: August 19, 2015Date of Patent: September 13, 2016Assignee: Broadcom CorporationInventor: Rajesh Kumar Sinha
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Patent number: 9444138Abstract: In some aspects, the disclosure is directed to methods and systems for transmitting to static and non-static devices. An access point having a plurality of antennas can send a plurality of sounding frames from the plurality of antennas to a plurality of devices. The access point can identify, based on responses to the plurality of sounding frames, at least one static device from the plurality of devices. The access point can assign, based on the responses to the plurality of sounding frames, to each of the at least one static device, a corresponding one of the plurality of antennas for operation in a directional mode for transmissions to the corresponding static device, and the remaining antennas from the plurality of antennas for operation in an omnidirectional mode.Type: GrantFiled: May 12, 2014Date of Patent: September 13, 2016Assignee: BROADCOM CORPORATIONInventors: David Garrett, Jun Zheng, Nihar Jindal
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Patent number: 9445327Abstract: User equipment (UE) includes an architecture for handling femtocell fingerprints, and searching for femtocells. The architecture may control the frequencies for which the femtocell search is performed in various manners. For example, the architecture may schedule a round-robin list of femtocell frequencies for measurement, and may reduce the search space according to the frequency bands actually in use in the region in which the UE is located, according to whether or not reselection timers are running for specific frequencies, or in other ways.Type: GrantFiled: November 25, 2013Date of Patent: September 13, 2016Assignee: Broadcom CorporationInventors: Romain Marie Pierre Raymond Garcin, Sudip Alexei Gupta, Abhishek Pandit, Yongqian Wang, Yuan Liu, Sethuraman Gurumoorthy, Sridhar Prakasam, Sultan Budhwani
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Patent number: 9445060Abstract: A system for transcoding locally cached content may include a memory configured to store at least a video stream. A controller communicatively coupled to the memory may be configured to determine a video definition format of a requested video stream and compare the requested video stream with a video definition format of a cached version of the requested video stream. A transcoder coupled to the controller may be configured to convert the cached version of the requested video stream to a lower video definition format if the video definition format of the cached version is determined to be higher than the video definition format of the requested video stream. If the video definition format of the requested video stream is same as the video definition format of the cached version, the controller may supply the requested video stream using the cached version stored in the memory without transcoding.Type: GrantFiled: July 22, 2013Date of Patent: September 13, 2016Assignee: Broadcom CorporationInventors: Yong Li, Xuemin Chen
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Patent number: 9445032Abstract: A host device, such as a television, automatically pairs with target devices, such as remote controls. There may be multiple host devices, and the host devices may exchange information that specifies valid, trusted, or authorized target devices, the signal level or range of signal levels at which the host device communicated with the target device, and other information. The host devices detect when a specific target device meets a transition criterion. Responsive to the transition criterion, a new host device automatically connects to the target device, and a prior host device that previously connected to the target device no longer responds to the target device.Type: GrantFiled: March 3, 2015Date of Patent: September 13, 2016Assignee: Broadcom CorporationInventor: James Michael Muth
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Patent number: 9444756Abstract: A network device monitors a path aggregation group. The network device may monitor path selection for network traffic (e.g., packets) communicated through the path aggregation group. During a monitoring period, the network device may obtain a path selection indication that a network packet has been selected for communication through the path aggregation group and specifically a first path in the path aggregation group. The network device may update a path entry associated with the first path in the path aggregation group.Type: GrantFiled: September 25, 2013Date of Patent: September 13, 2016Assignee: Broadcom CorporationInventors: Leonid Okner, Puneet Agarwal
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Patent number: 9444609Abstract: An RF front end arrangement comprises first filtering, second filtering, third filtering, fourth filtering and a switching arrangement. The switching arrangement is configured to selectively connect the filtering to plural antennas such that at a particular time the first and third filtering is connected to a first antenna and the second and fourth filtering is connected to a second antenna. This allows filtering with different frequency response characteristics to be in use simultaneously for the same frequency band. This can reduce the insertion loss associated with a signal path.Type: GrantFiled: April 2, 2014Date of Patent: September 13, 2016Assignee: BROADCOM CORPORATIONInventor: Seppo Olavi Rousu
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Patent number: 9442190Abstract: A Method and system for a RFID transponder with configurable feed point for RFID communications is provided. In this regard, an RFID transponder may receive RF signals via a leaky wave antenna and modulate an amplitude of a backscattered signal associated with the received RF signals by switching between a plurality of feed points of the leaky wave antenna to vary an input impedance of said RFID transponder. Each of the plurality of feed points may be located in a different position in the resonant cavity of the leaky wave antenna. The input impedance may be controlled by switching a load in and out of a receive path of the RFID transponder. The leaky wave antenna may be integrated within and/or on an integrated circuit, an integrated circuit package, or a combination thereof.Type: GrantFiled: March 18, 2015Date of Patent: September 13, 2016Assignee: BROADCOM CORPORATIONInventors: Ahmadreza Rofougaran, Maryam Rofougaran
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Patent number: 9444505Abstract: A system and method for frequency reuse for wireless point-to-point backhaul. Frequency reuse is enabled through the cancellation of interfering signals generated by interference sources. In one embodiment, a conventional dish antenna is complemented with one or more additional auxiliary antennas (e.g., isotropic). The one or more additional auxiliary antennas enable cancellation of interfering signals whose direction of arrival (DOA) is off the dish antenna's bore-sight.Type: GrantFiled: December 31, 2014Date of Patent: September 13, 2016Assignee: BROADCOM CORPORATIONInventors: Ronen Shaked, Ilan Reingold, Eitan Tsur, Eran Ridel
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Publication number: 20160261044Abstract: A point-to-point (PtP) communication system includes a near end antenna device configured to transmit a narrow antenna beam over a wireless link, and includes a far end antenna device configured receive the narrow antenna beam over the wireless link. The near end antenna device including a directive element configured to focus an electrical field into the narrow antenna beam, and including a beam steering element (e.g., a phased array feeder (PAF) assembly) configured to generate the electrical field and to track the far end antenna, and further including a communication interface unit (e.g., an outdoor unit) configured to perform operations on a transmitted signal and a received signal.Type: ApplicationFiled: May 16, 2016Publication date: September 8, 2016Applicant: Broadcom CorporationInventors: Eran RIDEL, Igal Kushnir
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Publication number: 20160261452Abstract: A wireless communication device (alternatively, device) includes a processor configured to support communications with other wireless communication device(s) and to generate and process signals for such communications. In some examples, the device includes a communication interface and a processor, among other possible circuitries, components, elements, etc. to support communications with other wireless communication device(s) and to generate and process signals for such communications. Short training field (STF) sequences are designed using a base binary sequence. In some examples, the base binary sequence is specified as [?1, ?1 ?1 +1 +1 +1 ?1, +1, +1 +1 ?1 +1 +1 ?1, +1]. One STF includes the base binary sequence mapped. Another STF includes the base binary sequence followed by 0 followed by a phased rotated version of the base binary sequence. Another STF includes the base binary sequence followed by 0 followed by an inverted version of the base binary sequence.Type: ApplicationFiled: January 30, 2016Publication date: September 8, 2016Applicant: BROADCOM CORPORATIONInventors: Ron Porat, Leo Montreuil
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Publication number: 20160261305Abstract: A transceiver or RF front end employing a transformer with a low loss transmit/receive (T/R) switch circuit in the ground path. In various embodiments, differential outputs of a power amplifier are coupled to the first winding of the transformer, while the input of a low noise amplifier is coupled to the second side of the transformer via a matching inductor. The T/R switch circuit, which may be a thin oxide CMOS transistor, is coupled between the second side of the transformer and ground. In operation, the T/R switch circuit may be enabled during transmit mode operations of the power amplifier, such that a low impedance path to ground is provided at the input of the low noise amplifier, thereby protecting it from high voltage swings generated by the power amplifier.Type: ApplicationFiled: May 19, 2016Publication date: September 8, 2016Applicant: BROADCOM CORPORATIONInventors: Matteo Conta, Seema Butala Anand
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Publication number: 20160262139Abstract: A wireless communication device (alternatively, device) includes a processor configured to support communications with other wireless communication device(s) and to generate and process signals for such communications. In some examples, the device includes a communication interface and a processor, among other possible circuitries, components, elements, etc. to support communications with other wireless communication device(s) and to generate and process signals for such communications. Different long training fields (LTFs) are designed using different respective binary sequences. The LTFs are designs based on a number of resource units (RUs) and RU sizes associated with a sub-carriers/tone plan. Each RU allocation specifies a respective one or more RUs of one or more RU sizes for a communication channel. The LTFs are designed such that peak to average power ratio (PAPR) of the LTF increases across the RU allocations as size of the one or more RU sizes increases.Type: ApplicationFiled: January 30, 2016Publication date: September 8, 2016Applicant: BROADCOM CORPORATIONInventors: Ron Porat, Leo Montreuil
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Publication number: 20160261024Abstract: An antenna section includes a bracket antenna configured to send and receive RF communications of a mobile communication device having a back side that is enclosed by a back cover, wherein the bracket antenna forms a structural portion of the back cover of the mobile communication device that encloses at least one portion of an edge of the mobile communication device and at least one portion of the back side. A booster plate is coupled to the mobile communication device and is configured to electromagnetically interact with the bracket antenna to modify the antenna beam pattern.Type: ApplicationFiled: March 31, 2015Publication date: September 8, 2016Applicant: BROADCOM CORPORATIONInventors: Henrik Tholstrup Jensen, Zhijiang Dong
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Publication number: 20160261952Abstract: Provided are communication devices having adaptable features and methods for implementation. One device includes at least one adaptable component and a processor configured to detect an external cue relevant to operation of the at least one adaptable component, to determine a desired state for the at least one adaptable component corresponding to the external cue, and then to dynamically adapt the at least one adaptable component to substantially produce the desired state. One adaptable component comprises at least one adaptable speaker system. Another adaptable component comprises at least one adaptable antenna.Type: ApplicationFiled: May 16, 2016Publication date: September 8, 2016Applicant: Broadcom CorporationInventor: John WALLEY
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Patent number: 9438415Abstract: A home gateway, which enables communication with a plurality of devices, recovers a root-content key from a key server of a service provider for secure delivery of content requested by a client device. The recovered root-content key is utilized to generate a content key for corresponding content scrambling. The home gateway communicates the scrambled content to the client device. The home gateway utilizes the RSA protocol to request the root-content key from the key server. The root-content key is recovered from the received key index. The content key is encrypted utilizing a public key and delivered to the client device. The key server distributes the public key to the gateway through authentication messages. The client device utilizes its own private key to recover the content key by decrypting the encrypted content key. The scrambled content from the home gateway is descrambled using the recovered content key for content consumption.Type: GrantFiled: June 28, 2011Date of Patent: September 6, 2016Assignee: Broadcom CorporationInventors: Xuemin Chen, Stephane Rodgers