Patents by Inventor Matthew Fischer

Matthew 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: 9100108
    Abstract: Various methods and systems are provided for time domain coexistence of RF signals. In one example, among others, a method includes obtaining access to a WLAN channel during a free period of a coexisting cellular connection, providing a RDG to allow another device to transmit for a duration corresponding to at least a portion of a TXOP, and receiving a transmission during the duration. In another example, a method includes obtaining access to a WLAN channel during a transmission period of a coexisting cellular connection and providing a protection frame to defer transmissions from another device for a duration corresponding to at least a portion of a TXOP. In another example, a method includes determining a shift of a BT transaction based at least in part upon a schedule of cellular communications and shifting at least a portion of the BT transaction based upon the determined shift.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: August 4, 2015
    Assignee: Broadcom Corporation
    Inventors: Sudhirkumar Prajapati, Payel Banerjee, Asish Makkattil Ratnan, Nethi Kashi Viswanath, Sachin Gupta, Sanjay Saha, Neeraj Poojary, Yury Gonikberg, Mark Gonikberg, Matthew Fischer, Kamesh Medapalli, Florin Baboescu, Steven Hall, Shawn Ding, Prasanna Desai, Knut Terje Hermod Odman
  • Patent number: 8837460
    Abstract: Aspects of a method and system for bridging and routing offload in a multiport wireless system are presented. Various aspects of the system may include a wireless network interface subsystem that enables transcoding of at least a portion of a data packet received by the wireless network interface subsystem. The wireless network interface subsystem may enable transfer of the transcoded portion of the data packet from the wireless network interface subsystem to a wired network interface subsystem that is communicatively coupled thereto. The transcoded portion of the data packet may be compliant with a format utilized by the wired network interface subsystem.
    Type: Grant
    Filed: September 15, 2012
    Date of Patent: September 16, 2014
    Assignee: Broadcom Corporation
    Inventors: Matthew Fischer, Raymond Hayes
  • Patent number: 8824678
    Abstract: Methods and systems for generating anonymous MAC addresses and determining permanent MAC addresses from anonymous MAC addresses are disclosed. Permanent MAC addresses may be associated with a location in a location database. Generating anonymous MAC addresses may protect user privacy and allow manufacturers and users of wireless access points to control their inclusion in location databases.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: September 2, 2014
    Assignee: Broadcom Corporation
    Inventors: Craig Ochikubo, Prasanna Desai, Matthew Fischer, Raymond Hayes
  • Patent number: 8804741
    Abstract: A method for processing information in a wireless system including a host device, the host device including a wireless network processor, the method including receiving by the wireless network processor, at least one out-of-order frame. The wireless network processor may place data of the received at least one out-of-order frame in a memory, and may manage information relating to one or more holes resulting from the at least one out-of-order frame in a TCP receive window. The wireless network processor may set a programmable limit with respect to a number of holes allowed in the TCP receive window. The memory may include a local memory outside of the host device and/or a host memory within the host device.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: August 12, 2014
    Assignee: Broadcom Corporation
    Inventors: James D. Bennett, Jeyhan Karaoguz, Uri Elzur, Matthew Fischer
  • Patent number: 8493590
    Abstract: A system for transmitting data directly between a plurality of client network devices in a network is disclosed. The system may include a first client network device having a first client (“STA”) module and a second client network device of the plurality of client network devices where the second client network device includes a Dual Access Point and Station enabled device (“DAS-enabled device”).
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: July 23, 2013
    Assignee: Broadcom Corporation
    Inventors: Matthew Fischer, Stephen Ray Palm
  • Patent number: 8473732
    Abstract: Aspects of a method and system for protected MAC sequence numbers, as well as secure block acknowledgment (block ACK) with protected MAC sequence number are presented. In one aspect of the system a communicating station (STA) may protect the sequence number (SN) field portion of transmitted protocol data units (PDUs), for example data MAC layer PDUs (MPDUs), or frames. In another aspect of the system, starting sequence number (SSN) information communicated via control frames, such as block acknowledgment request (BAR) and block acknowledgment (BA) frames, may be protected. In another aspect of the system, communicating STAs may exchange management frames to enable the protection of SN information in data MPDUs and/or the protection of SSN values in control MPDUs.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: June 25, 2013
    Assignee: Broadcom Corporation
    Inventors: Henry Ptasinski, Matthew Fischer
  • Patent number: 8411581
    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: Grant
    Filed: July 25, 2006
    Date of Patent: April 2, 2013
    Assignee: Broadcom Corporation
    Inventors: Hooman Honary, Matthew Fischer
  • Publication number: 20130010779
    Abstract: Aspects of a method and system for bridging and routing offload in a multiport wireless system are presented. Various aspects of the system may include a wireless network interface subsystem that enables transcoding of at least a portion of a data packet received by the wireless network interface subsystem. The wireless network interface subsystem may enable transfer of the transcoded portion of the data packet from the wireless network interface subsystem to a wired network interface subsystem that is communicatively coupled thereto. The transcoded portion of the data packet may be compliant with a format utilized by the wired network interface subsystem.
    Type: Application
    Filed: September 15, 2012
    Publication date: January 10, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Matthew Fischer, Raymond Hayes
  • Patent number: 8289948
    Abstract: Aspects of a method and system for bridging and routing offload in a multiport wireless system are presented. Various aspects of the system may include a wireless network interface subsystem that enables transcoding of at least a portion of a data packet received by the wireless network interface subsystem. The wireless network interface subsystem may enable transfer of the transcoded portion of the data packet from the wireless network interface subsystem to a wired network interface subsystem that is communicatively coupled thereto. The transcoded portion of the data packet may be compliant with a format utilized by the wired network interface subsystem.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: October 16, 2012
    Assignee: Broadcom Corporation
    Inventors: Matthew Fischer, Raymond Hayes
  • Publication number: 20120257753
    Abstract: Methods and systems for generating anonymous MAC addresses and determining permanent MAC addresses from anonymous MAC addresses are disclosed. Permanent MAC addresses may be associated with a location in a location database. Generating anonymous MAC addresses may protect user privacy and allow manufacturers and users of wireless access points to control their inclusion in location databases.
    Type: Application
    Filed: April 5, 2011
    Publication date: October 11, 2012
    Applicant: Broadcom Corporation
    Inventors: Craig OCHIKUBO, Prasanna Desai, Matthew Fischer, Raymond Hayes
  • Patent number: 8169998
    Abstract: Aspects of a system for an ad hoc wireless network with master control of network parameters may include one or more circuits that enable generation of a beacon frame at a supervisory WLAN station wherein the generated beacon frame contains a supervisory role indication. The supervisory role indication enables the supervisory WLAN station to establish timing synchronization and network parameters that are utilized by a plurality of WLAN stations utilized for communicating within a wireless network. Aspects of the system may also include a WLAN station that enables communication via a wireless local area network by utilizing a timestamp value and network parameter values retrieved from a received beacon frame based on the presence of a supervisory role indication within the received beacon frame.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: May 1, 2012
    Assignee: Broadcom Corporation
    Inventors: Matthew Fischer, Christopher Hansen
  • Publication number: 20110044164
    Abstract: A method for processing information in a wireless system including a host device, the host device including a wireless network processor, the method including receiving by the wireless network processor, at least one out-of-order frame. The wireless network processor may place data of the received at least one out-of-order frame in a memory, and may manage information relating to one or more holes resulting from the at least one out-of-order frame in a TCP receive window. The wireless network processor may set a programmable limit with respect to a number of holes allowed in the TCP receive window. The memory may include a local memory outside of the host device and/or a host memory within the host device.
    Type: Application
    Filed: November 2, 2010
    Publication date: February 24, 2011
    Inventors: James D. Bennett, Uri Elzur, Matthew Fischer, Jeyhan Karaoguz
  • Patent number: 7826457
    Abstract: A method and system for handling or processing out-of-order TCP segments in a wireless system may comprise at least one of: placing a first TCP segment received by a wireless network processor in a host buffer and having a mapping between a TCP sequence number and a corresponding buffer address. It may be determined whether a second TCP segment received by the wireless network processor is one of an in-order TCP segment or an out-of-order TCP segment. If the second received TCP segment is an out-of-order TCP segment, then control information associated with at least the second TCP segment may be stored locally on the wireless network processor. The out-of-order TCP segment may be placed in a portion of the host buffer.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: November 2, 2010
    Inventors: James D. Bennett, Uri ElZur, Matthew Fischer, Jeyhan Karaoguz
  • Publication number: 20090285172
    Abstract: A method and apparatus for assigning holding packets in a wireless communication system or network includes determining an invalid station address that corresponds to an invalid station and that does not correspond to the address of an affiliated station. The invalid station address is assigned to a holding packet. The holding packet is transmitted to allocate a transmit period to the invalid station. This generates a quiet time in the wireless communication system or network during the transmit period.
    Type: Application
    Filed: July 24, 2009
    Publication date: November 19, 2009
    Applicant: BROADCOM CORPORATION
    Inventors: Christopher J. Hansen, Joonsuk Kim, Matthew Fischer, Rajugopal Gubbi, Jason A. Trachewsky
  • Publication number: 20090235066
    Abstract: Aspects of a method and system for protected MAC sequence numbers, as well as secure block acknowledgment (block ACK) with protected MAC sequence number are presented. In one aspect of the system a communicating station (STA) may protect the sequence number (SN) field portion of transmitted protocol data units (PDUs), for example data MAC layer PDUs (MPDUs), or frames. In another aspect of the system, starting sequence number (SSN) information communicated via control frames, such as block acknowledgment request (BAR) and block acknowledgment (BA) frames, may be protected. In another aspect of the system, communicating STAs may exchange management frames to enable the protection of SN information in data MPDUs and/or the protection of SSN values in control MPDUs.
    Type: Application
    Filed: March 17, 2009
    Publication date: September 17, 2009
    Inventors: Henry Ptasinski, Matthew Fischer
  • Patent number: 7583933
    Abstract: A method and apparatus for dynamic frequency selection in a wireless communication system or network includes processing that begins when an access point determines interference on a wireless channel that is being used by the access point. When the interference exceeds an interference threshold, the access point provides a request packet to affiliated stations being serviced by the access point for channel spectrum information. The processing continues as the affiliated stations generate the channel spectrum information regarding each of the wireless channels in the wireless communication network. The processing proceeds then as the affiliated stations provide the channel spectrum information to the access point via the current wireless channel. The access point interprets the channel spectrum information to determine a desired wireless channel of the plurality of wireless channels within the wireless communication network.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: September 1, 2009
    Assignee: Broadcom Corporation
    Inventors: Christopher J. Hansen, Joonsuk Kim, Matthew Fischer, Rajugopal Gubbi, Jason A. Trachewsky
  • Publication number: 20080151848
    Abstract: Aspects of a system for an ad hoc wireless network with master control of network parameters may include one or more circuits that enable generation of a beacon frame at a supervisory WLAN station wherein the generated beacon frame contains a supervisory role indication. The supervisory role indication enables the supervisory WLAN station to establish timing synchronization and network parameters that are utilized by a plurality of WLAN stations utilized for communicating within a wireless network. Aspects of the system may also include a WLAN station that enables communication via a wireless local area network by utilizing a timestamp value and network parameter values retrieved from a received beacon frame based on the presence of a supervisory role indication within the received beacon frame.
    Type: Application
    Filed: August 27, 2007
    Publication date: June 26, 2008
    Inventors: Matthew Fischer, Christopher Hansen
  • Publication number: 20080137627
    Abstract: Aspects of a method and system for coexistence between 20 MHz and 40 MHz OBSSes in WLANs. Aspects of a system may include a receiving device, such as a WLAN station (STA), which enables reception of an information frame, such as a management frame, via a wireless communication medium. The receiving device may be associated with a wireless network device group, such as a basic service set (BSS). The information frame received by the receiving device may transmitted by a transmitting device, such as a transmitting access point (AP), which is associated with a foreign wireless network device group, for example a foreign BSS. The receiving device may be reconfigured to restrict RF channel bandwidth utilized for transmitting and/or receiving signals via the wireless communication medium based on the received information frame.
    Type: Application
    Filed: December 7, 2007
    Publication date: June 12, 2008
    Inventors: Matthew Fischer, Jason Trachewsky, Vinko Erceg
  • Publication number: 20080031175
    Abstract: A method and apparatus for accessing, controlling and utilizing a network communication medium. Various aspects of the present invention may comprise a first networked device with power-save capability. The first networked device may acquire control of a communication medium utilizing a medium access protocol, which may be contention-based. The first networked device may utilize the communication medium to communicate information to a second networked device. The first networked device may transfer control of the communication medium to the second networked device, whereby the second networked device may control the communication medium without having to acquire control of the communication medium by utilizing the medium access protocol. The second networked device may utilize the communication medium to communicate information to the first networked device while maintaining control over the communication medium.
    Type: Application
    Filed: October 2, 2007
    Publication date: February 7, 2008
    Inventor: Matthew Fischer
  • Publication number: 20080025210
    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 25, 2006
    Publication date: January 31, 2008
    Inventors: Hooman Honary, Matthew Fischer