Patents by Inventor James Fischer

James Fischer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9264996
    Abstract: Preamble and header bit allocation for power savings within multiple user, multiple access, and/or MIMO wireless communications. Within a multi-user packet, information (e.g., partial address information) related to a recipient group of wireless communication devices (e.g., as few as one wireless communication device or any subset of a number of wireless communication devices, sometimes including all of the wireless communication devices) is emplaced within a PHY (e.g., physical layer) header of such a multi-user packet to be communicated within a multi-user (MU) environment. Such recipient indicating information can be encoded with relatively higher robustness (e.g., lower coding rates, lower ordered modulation, cyclic redundancy check (CRC), etc.) that remaining portions of the multi-user packet. Various portions of the remainder of the multi-user packet may respectively correspond to different wireless communication devices (e.g.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: February 16, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Joonsuk Kim, Matthew James Fischer
  • Publication number: 20160028639
    Abstract: A relay wireless communication device is implemented to perform buffer management and coordination with a source wireless communication device. A relay wireless communication device (generally, a relay) informs a source wireless communication device (source) of the status of memory therein to store messages intended for a destination wireless communication device (destination). For example, the source transmits information to the relay, which buffers information before forwarding it on to the destination. This buffering may be a function of the source having additional information intended for the relay and/or destination. The relay performs appropriate signaling, such as suspend transmission requests and resume transmission requests, to inform other devices in the system of its memory storage status (e.g., such as when having an actual or anticipated overflow).
    Type: Application
    Filed: October 5, 2015
    Publication date: January 28, 2016
    Applicant: BROADCOM CORPORATION
    Inventors: Chiu Ngok Eric Wong, Matthew James Fischer
  • Publication number: 20160029380
    Abstract: A signaling protocol allows for speed frame exchange between different wireless communication devices within single user, multiple user, multiple access, and/or MIMO wireless communication system. A listening wireless communication device analyzes state of speed frame indicator bits within frames transmitted from a first other wireless communication device to determine the entire radio frame exchanges between that first other wireless communication device and a second other wireless communication device. The second other wireless communication device may be a hidden node relative to the listening wireless communication device such that all or less than all transmissions from the hidden node are received by the listening device. The listening wireless communication device determines the status of the communication medium (e.g.
    Type: Application
    Filed: October 5, 2015
    Publication date: January 28, 2016
    Applicant: BROADCOM CORPORATION
    Inventors: Chiu Ngok Eric Wong, Matthew James Fischer
  • Patent number: 9244792
    Abstract: A disk-error detection system may include a storage array having a plurality of storage disks configured to store data. The disk-error detection system may include a processor in communication with the storage disks. The processor may detect presence of a media error in a storage disk from the plurality of storage disks during a read operation of the data stored on the storage disk. The processor may perform a media-error detection scan of a predetermined portion of the storage disk in response to the detection of the media error. The location on the storage disk of the predetermined portion of the storage disk may be based on location of the media error on the storage disk. A method and computer-readable medium may also implement disk-error detection.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: January 26, 2016
    Assignee: Teradata US, Inc.
    Inventors: Matthew James Fischer, Scott Eymann Stucky
  • Publication number: 20160021611
    Abstract: Session recovery after network coordinator or AP restart for single user, multiple user, multiple access, and/or MIMO wireless communications. Restart or reset of a network coordinator (e.g., an access point (AP) or other network coordinator type device) may occur for various reasons (e.g., a power cycle or power failure, inadequate failover protection, scheduled or planned power outages such as for including network maintenance, software upgrades, etc.). Upon determination of network coordinator restarted or reset, a singular bit within a communication from the network coordinator indicates synchronization or not of the its timing synchronization function (TSF) (e.g., with other devices in the communication system, such as wireless stations (STAs), smart meter stations (SMSTAs), etc.). A given device (e.g., STA, SMSTA, etc.) can provide its current TSF to the network coordinator so that it can resynchronize, re-establish its scheduled for wake times of those devices (e.g., target wake times (TWTs)), etc.
    Type: Application
    Filed: May 27, 2015
    Publication date: January 21, 2016
    Applicant: BROADCOM CORPORATION
    Inventors: Chiu Ngok Eric Wong, Matthew James Fischer
  • Publication number: 20150373707
    Abstract: Acknowledgment and/or receiver recovery mechanisms for scheduled responses within multiple user, multiple access, and/or MIMO wireless communications. Explicit scheduling information is provided from a first wireless communication device (e.g., an access point (AP), a transmitting wireless communication device) to a number of other wireless communication devices (e.g., wireless stations (STAs), receiving wireless communication devices) directing those other wireless communication devices a manner by which responses (e.g., acknowledgments (ACKs), block acknowledgments (BACKs), training feedback frames, etc.) are to be provided to the first wireless communication device there from. Such direction may include the order, timing, cluster assignment, etc. by which each respective wireless communication device is to provide its respective response to the first wireless communication device.
    Type: Application
    Filed: August 31, 2015
    Publication date: December 24, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Peiman Amini, Matthew James Fischer
  • Publication number: 20150373620
    Abstract: A relay wireless communication device is discovered using probe request. A source device that intends to transmit one or more frames to a destination device transmits the probe request to request a probe response from one or more potential relay devices. A relay device transmits a probe response to the source device when the relay device may operate to forward the one or more frames from the source device to the destination device. The relay device employs one or more considerations to determine its eligibility to serve as relay for the source and destination devices. The source device selects one of the potential relay devices based on their provided probe responses. The source device may select an optimal relay device based upon two or more received probe responses.
    Type: Application
    Filed: August 31, 2015
    Publication date: December 24, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Chiu Ngok Eric Wong, Matthew James Fischer
  • Publication number: 20150349860
    Abstract: Differential feedback within multiple user, multiple access, and/or MIMO wireless communications. After full feedback signal(s) have been received by a communication device (e.g., one that is to be performing beamforming for use in subsequent signal transmission), differential feedback signal(s) are received. Those differential feedback signal(s) are employed to update the full feedback signal(s) thereby generating updated/modified full feedback signals. Over time, such updated/modified full feedback signals may subsequently be further updated based upon later received inferential feedback signal(s). Such differential feedback signaling takes advantage of time and/or frequency correlation in a communication channel to provide for reduced feedback overhead by feeding back a difference or delta (?) relative to a previous value. For example, instead of providing full feedback signals in each respective/successive communication, feedback overhead is reduced by providing a difference or delta (?).
    Type: Application
    Filed: August 10, 2015
    Publication date: December 3, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Ron Porat, Matthew James Fischer, Eric J. Ojard
  • Patent number: 9204337
    Abstract: Bandwidth mechanisms and successive channel reservation access within multiple user, multiple access, and/or MIMO wireless communications. A management frame, communicated from one wireless communication devices to one or more others, includes successive channel reservation assignment therein, and also indicates channel(s) within cluster(s) for use in respective communications (e.g., transmissions/receptions) of those wireless communication device(s) that receive the management frame. Subsequent management frames can modify or update such a channel assignment. Channel reservation for use in communications by respective wireless communication devices may be grown when additional channels may become available. Based on later determined information regarding the channel availability status, such channels that may become available can be used for subsequent, wider bandwidth communications.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: December 1, 2015
    Assignee: BROADCOM CORPORATION
    Inventors: Matthew James Fischer, Peiman Amini, Vinko Erceg, Rajendra Tushar Moorti
  • Publication number: 20150341102
    Abstract: Distributed signal field for communications within multiple user, multiple access, and/or MIMO wireless communications. In accordance with wireless communications, a signal (SIG) field employed within such packets is distributed or partitioned into at least two separate signal fields (e.g., SIG A and SIG B) that are located in different portions of the packet. A first of the SIG fields includes information that may be processed and decoded by all wireless communication devices, and a second of the SIG fields includes information that is specific to one or more particular wireless communication devices (e.g., a specific wireless communication device or a specific subset of the wireless communication devices). The precise locations of the at least first and second SIG fields within a packet may be varied, including placing a second of the SIG fields (e.g., including user-specific information) adjacent to and preceding a data field in the packet.
    Type: Application
    Filed: July 30, 2015
    Publication date: November 26, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Vinko Erceg, Joseph Paul Lauer, Matthew James Fischer, Peiman Amini, Joonsuk Kim
  • Publication number: 20150341841
    Abstract: A transceiver of an apparatus supports communication with at least one additional apparatus. A processing module processes at least a portion of media access control (MAC) header content of a MAC frame within a signal received via the at least one transceiver or generated internally. In particular, the MAC header content, and optionally the MAC payload content, is processed based on a filter and classification agreement between the apparatus and the at least one additional apparatus to classify the MAC frame.
    Type: Application
    Filed: July 31, 2015
    Publication date: November 26, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Qi Wang, Matthew James Fischer
  • Publication number: 20150341106
    Abstract: A relay receives a frame from a source, and based on state of a relayed frame bit within the frame, the relay selects an operational mode: implicit acknowledgement mode, first explicit acknowledgement mode, or second explicit acknowledgement mode. The relay sets the relayed frame bit in subsequent transmissions to indicate transmission opportunity (TXOP) control of the communication medium (e.g., whether under control of the relay or the source). The source may receive acknowledgement of the relay's successful receipt of the frame implicitly via the relay transmitting a relayed frame to the destination. Alternatively, the source may receive acknowledgement of the relay's successful receipt of the frame explicitly in a response frame from the relay. State of a more data bit in the frame receive from the source may indicate the source has one or more additional frames intended for the destination.
    Type: Application
    Filed: July 31, 2015
    Publication date: November 26, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Chiu Ngok Eric Wong, Matthew James Fischer
  • Patent number: 9197298
    Abstract: Group identification and definition within multiple user, multiple access, and/or MIMO wireless communications. A group identification definition field may be transmitted to a number of receiving devices for use in interpreting current or subsequently received packets that include a group identification field (group ID). The group ID can serve a number of functions such as indicating those receiving devices for which the packet is intended, the identification of fields within the packet corresponding to the various devices, certain parameters (e.g., code type, code rate, modulation type, etc.) associated with such fields within the packet, etc. The group identification definition field may be updated or modified to allow for modification of the manner in which subsequent packets, including respective group IDs, are processed. One of a variety of events may direct the group identification definition field may be updated or modified.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: November 24, 2015
    Assignee: Broadcom Corporation
    Inventors: Joonsuk Kim, Matthew James Fischer, Peiman Amini, Joseph Paul Lauer, Vinko Erceg, Carlos H. Aldana, Eric J. Ojard, Sirikiat Lek Ariyavisitakul
  • Publication number: 20150326409
    Abstract: Multi-user null data packet (MU-NDP) sounding within multiple user, multiple access, and/or MIMO wireless communications. Within communication systems including multiple wireless communication devices (e.g., one or more APs, STAs, etc.), channel sounding of the selected communication links between the various wireless communication devices is performed. A MU-NDP announcement frame is transmitted to and received by various wireless communication devices indicating which of those wireless communication devices (e.g., one, some, or all) are being sounded. Then, respective NDP sounding frames are transmitted via the communication links corresponding to those wireless communication devices (e.g., one, some, or all) are being sounded, and sounding feedback signals are subsequently sent back to the original transmitting wireless communication device.
    Type: Application
    Filed: May 27, 2015
    Publication date: November 12, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Joonsuk Kim, Matthew James Fischer, Peiman Amini, Vinko Erceg
  • Patent number: 9179502
    Abstract: Communications are coordinated between different respective wireless communication device groups in a multiple delivery traffic indication map (DTIM) per device signaling scheme. Different respective wireless communication devices (e.g., wireless stations (STAs)) may communicate with a manager/coordinator wireless communication device (e.g., access point (AP)) at different times and for different reasons. The manager/coordinator wireless communication device generates and transmits beacons to the wireless communication devices specifying times during which communications may be supported with the manager/coordinator wireless communication device. A restricted access window (RAW) information element (IE) within a beacon includes at least one restricted access window (RAW) to specify a wireless communication device authorized to communicate with the manager/coordinator wireless communication device.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: November 3, 2015
    Assignee: Broadcom Corporation
    Inventor: Matthew James Fischer
  • Publication number: 20150312158
    Abstract: Aspects of a method and system for medium access control (MAC) layer specialization for voice and multimedia data streams are presented. Aspects of the method include determining a number of attempts for transmitting one or more medium access control (MAC) frames. Aspects of the system may include a processor that enables determination of a number of attempts for transmitting one or more MAC frames. A maximum number for such attempts may be determined based on one or more priority levels associated with different portions of multimedia information being communicated via a wireless medium and contained within the one or more MAC frames.
    Type: Application
    Filed: July 9, 2015
    Publication date: October 29, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Hooman Honary, Matthew James Fischer
  • Publication number: 20150296446
    Abstract: A device may use positioning information to increase the efficiency a wireless local area network (WLAN) scanning process. To determine the presence of WLANs within range, a device may determine its own location. For example, the device may determine its own location using a satellite-based navigation system. The device may then determine a wireless scanning strategy based on the determined location. The determination may be further based on connection parameters, such as, channel information, network capabilities, and/or other connection parameters.
    Type: Application
    Filed: April 8, 2015
    Publication date: October 15, 2015
    Inventors: Matthew James Fischer, Nelson Ray Sollenberger, Vinko Erceg
  • Patent number: 9154430
    Abstract: A relay wireless communication device is implemented to perform buffer management and coordination with a source wireless communication device. A relay wireless communication device (generally, a relay) informs a source wireless communication device (source) of the status of memory therein to store messages intended for a destination wireless communication device (destination). For example, the source transmits information to the relay, which buffers information before forwarding it on to the destination. This buffering may be a function of the source having additional information intended for the relay and/or destination. The relay performs appropriate signaling, such as suspend transmission requests and resume transmission requests, to inform other devices in the system of its memory storage status (e.g., such as when having an actual or anticipated overflow).
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: October 6, 2015
    Assignee: Broadcom Corporation
    Inventors: Chiu Ngok Eric Wong, Matthew James Fischer
  • Patent number: 9155102
    Abstract: A signaling protocol allows for speed frame exchange between different wireless communication devices within single user, multiple user, multiple access, and/or MIMO wireless communication system. A listening wireless communication device analyzes state of speed frame indicator bits within frames transmitted from a first other wireless communication device to determine the entire radio frame exchanges between that first other wireless communication device and a second other wireless communication device. The second other wireless communication device may be a hidden node relative to the listening wireless communication device such that all or less than all transmissions from the hidden node are received by the listening device. The listening wireless communication device determines the status of the communication medium (e.g.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: October 6, 2015
    Assignee: Broadcom Corporation
    Inventors: Chiu Ngok Eric Wong, Matthew James Fischer
  • Publication number: 20150264587
    Abstract: A wireless communication device (e.g., generally, a device) includes a communication interface and a processor configured to support communications with one or more other devices. In an example of operation, the device supports first communications based on a first communication protocol with a first network coordinator device and identifies a second network coordinator device that operates based on a second communication protocol when supporting those first communications. The device also determines one or more operational parameters associated with the second network coordinator device. When one or more conditions is/are appropriate, the device interworks the first communications and second communications based on the second communication protocol with the second network coordinator device.
    Type: Application
    Filed: February 27, 2015
    Publication date: September 17, 2015
    Applicant: BROADCOM CORPORATION
    Inventors: Matthew James Fischer, Qi Wang, Vinko Erceg, Raymond Reynolds Hayes, Mark Kent, Florin Baboescu, Dutt Harinarayan Kalapatapu