Patents by Inventor Prasanna Desai

Prasanna Desai 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: 8554141
    Abstract: A Bluetooth low energy (BLE) device receives advertising packets from an advertising BLE device. The BLE device filters the received advertising packets utilizing hardware to search for the advertiser. If the advertiser is not found by the hardware, the packet filtering continues utilizing firmware. Device identity information, comprising non-private and/or private device identities, of preferred BLE devices is partitioned to form a different white list for the hardware, firmware, and host, respectively, to concurrently support privacy and white listing. If the advertiser is found by the hardware, the hardware sends a response to the advertiser following a successful CRC check performed in the hardware. If the advertiser is found by the firmware, the device identity information of the advertiser is inserted in the white list for the hardware. The host may be awakened based on the device configuration and/or attribute type information of the received advertising packets.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: October 8, 2013
    Assignee: Broadcom Corporation
    Inventors: Prasanna Desai, Angel Polo, Chikan Kwan, Latha Roy, Yuan Zhuang, Ash Kapur, Norbert Grunert, Brima Ibrahim, John Walley
  • Publication number: 20130258931
    Abstract: A circuit includes a first wireless interface circuit that transceives packetized data between a host module and a first external device in accordance with a first wireless communication protocol, wherein the first wireless protocol carries wireless telephony data for communication with a wireless telephony network. A second wireless interface circuit transceives packetized data between the host module and a second external device in accordance with a second wireless communication protocol. The second wireless interface circuit includes at least one module that is shared with first wireless interface circuit. The first wireless interface circuit and the second wireless interface circuit operate in accordance with a wireless interface schedule that includes a first time interval where the first wireless interface device and the second wireless interface device contemporaneously use the at least one module.
    Type: Application
    Filed: May 29, 2013
    Publication date: October 3, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Mark Gonikberg, Prasanna Desai, Brima B. Ibrahim
  • Patent number: 8526348
    Abstract: Collaborative coexistence of co-located mobile WiMAX, wireless LAN, and/or Bluetooth radios. Within a communication device that includes multi-protocol communication capability, the various radio modules included within such a communication device operate cooperatively such that collisions are avoided between those various radios. When a first of the radio modules operates as governed by a relatively rigid frame structure, a second of the radio modules capitalizes upon that predetermined nature (of the relatively rigid frame structure) to support communication during times in which that first radio module has a lower level of activity (e.g., turned off completely, within a power savings mode, in a sleep mode, etc.). The radio module operation is performed within a time-orthogonal manner, such that multiple radio modules are not attempting to transmit or receive simultaneously.
    Type: Grant
    Filed: December 3, 2011
    Date of Patent: September 3, 2013
    Assignee: Broadcom Corporation
    Inventor: Prasanna Desai
  • Patent number: 8483139
    Abstract: A circuit includes a first wireless interface circuit that transceives packetized data between a host module and a first external device in accordance with a first wireless communication protocol, wherein the first wireless protocol carries wireless telephony data for communication with a wireless telephony network. A second wireless interface circuit transceives packetized data between the host module and a second external device in accordance with a second wireless communication protocol. The second wireless interface circuit includes at least one module that is shared with first wireless interface circuit. The first wireless interface circuit and the second wireless interface circuit operate in accordance with a wireless interface schedule that includes a first time interval where the first wireless interface device and the second wireless interface device contemporaneously use the at least one module.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: July 9, 2013
    Assignee: Broadcom Corporation
    Inventors: Mark Gonikberg, Prasanna Desai, Brima B. Ibrahim
  • Patent number: 8472571
    Abstract: Direct detection of wireless interferers in a communication device for multiple modulation types. One or more radios implemented within a communication device is/are operative to receive and process wireless communications. A wireless communication signal is processed to extract symbols there from. Various symbols groups are processed in accordance with correlation processing to identify potential interferers (e.g., other communication devices using common portions of frequency spectra). Alternatively, matched filter processing (e.g., using a Barker matched filter in some embodiments) operates on the various symbol groups to identify some potential interferers. Various combinations of correlation processing and matched filter processing may be employed in other instances (e.g., using any of a desired means of comparison, combining, etc.) in considering interferers identified in accordance with each of these two means.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: June 25, 2013
    Assignee: Broadcom Corporation
    Inventor: Prasanna Desai
  • Patent number: 8428002
    Abstract: A circuit includes a first wireless interface circuit that transceives packetized data with a first external device in accordance with a first wireless communication protocol. A second wireless interface circuit transceives packetized data with a second external device in accordance with a second wireless communication protocol and wherein the operation of the second wireless interface circuit interferes with the operation of the first wireless interface circuit. A processing module selectively preempts use of the second frequency spectrum by the second external device using a plurality of preemption modes including a first preemption mode and a second preemption mode.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: April 23, 2013
    Assignee: Broadcom Corporation
    Inventors: Mark Gonikberg, Prasanna Desai
  • Patent number: 8364080
    Abstract: A method and system for achieving enhanced quality and higher throughput for collocated IEEE 802.11b/g and Bluetooth (BT) devices in coexistent operation are provided. A priority signal may be generated by a BT radio in a coexistence station to disable WLAN transmissions in a WLAN radio when a BT HV3 frame is available for transmission. When the priority signal is asserted, an exponentially growing retransmission backoff mechanism in the WLAN radio may be disabled. Moreover, when the BT radio and the WLAN radio are enabled for coexistence operation, a WLAN fragmentation threshold in the WLAN radio may be modified based on a WLAN modulation rate and the BT HV3 frame duration.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: January 29, 2013
    Assignee: Broadcom Corporation
    Inventors: Prasanna Desai, Brima Ibrahim
  • Patent number: 8345704
    Abstract: Aspects of a method and system for multi-radio coexistence and a collaborative interface may include exchanging information between a plurality of radio transceivers integrated within a single device to enable coexistence, and coordinating sharing of transmit and receive resources between the plurality of radio transceivers by controlling access to the transmit and receive resources, where any one of the plurality of radio transceivers may be enabled to be selected to control the access based on the exchanged information. Selecting one of the radio transceivers for the controlling of the access band may be based on processing capability or priority of communication. The resources may comprise frequency bands, time slots, and antenna access. The information may be exchanged via a serial bus between the plurality of radio transceivers, where the serial bus may conform to an I2C (I-square-C) multi-master serial bus. Each of the radio transceivers may conform to one or more radio frequency technology.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: January 1, 2013
    Assignee: Broadcom Corporation
    Inventors: Prasanna Desai, Brima Ibrahim, John Walley, Gang Lu
  • Publication number: 20120294396
    Abstract: Direct detection of wireless interferers in a communication device for multiple modulation types. One or more radios implemented within a communication device is/are operative to receive and process wireless communications. A wireless communication signal is processed to extract symbols there from. Various symbols groups are processed in accordance with correlation processing to identify potential interferers (e.g., other communication devices using common portions of frequency spectra). Alternatively, matched filter processing (e.g., using a Barker matched filter in some embodiments) operates on the various symbol groups to identify some potential interferers. Various combinations of correlation processing and matched filter processing may be employed in other instances (e.g., using any of a desired means of comparison, combining, etc.) in considering interferers identified in accordance with each of these two means.
    Type: Application
    Filed: July 23, 2012
    Publication date: November 22, 2012
    Applicant: BROADCOM CORPORATION
    Inventor: Prasanna Desai
  • Publication number: 20120269181
    Abstract: A circuit includes a first wireless interface circuit that transceives packetized data between a host module and a first external device in accordance with a first wireless communication protocol, wherein the first wireless protocol carries wireless telephony data for communication with a wireless telephony network. A second wireless interface circuit transceives packetized data between the host module and a second external device in accordance with a second wireless communication protocol. The second wireless interface circuit includes at least one module that is shared with first wireless interface circuit. The first wireless interface circuit and the second wireless interface circuit operate in accordance with a wireless interface schedule that includes a first time interval where the first wireless interface device and the second wireless interface device contemporaneously use the at least one module.
    Type: Application
    Filed: June 29, 2012
    Publication date: October 25, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Mark Gonikberg, Prasanna Desai, Brima B. Ibrahim
  • Publication number: 20120258667
    Abstract: A host device may be enabled to support a plurality of wireless interfaces, wherein some of these interfaces may be utilized to support human interface device (HID) based communication. The host device may be enabled to monitor activity of HID devices based on communications via HID capable wireless interfaces, may predict future use of the HID devices based on the monitoring, and may manage sniff communication that is utilized to track and/or detect activities in the HID devices. The management of the sniff communication may comprise adjusting characteristics of the sniff communication to enable improving throughput of other wireless interfaces available via the host device that may be affected by the sniff communication. The adjustment of the characteristics of sniff communication may comprise adjusting, statically and/or dynamically, length of sniff intervals and/or designating of sniff packets as high priority requests.
    Type: Application
    Filed: June 18, 2012
    Publication date: October 11, 2012
    Applicant: Broadcom Corporation
    Inventors: Brima Ibrahim, Prasanna Desai
  • 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: 8285205
    Abstract: A method and system for a single chip integrated Bluetooth and FM transceiver and baseband processor are provided. The single chip may comprise a Bluetooth radio, an FM radio, a processor system, and a peripheral transport unit (PTU). FM data may be received and/or transmitted via the FM radio and Bluetooth data may be received and/or transmitted via the Bluetooth radio. The FM radio may receive radio data system (RDS) data. The PTU may support digital and analog interfaces. A processor in the processor system may time-multiplex processing of FM data and processing of Bluetooth data. The single chip may operate in an FM-only, a Bluetooth-only, and an FM-Bluetooth mode. The single chip may reduce power consumption by disabling portions of the Bluetooth radio during FM-only mode and/or disabling analog circuitry when performing digital processing. Communication between Bluetooth and FM channels may be enabled via the single chip.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: October 9, 2012
    Assignee: Broadcom Corporation
    Inventors: Brima Ibrahim, Mitchell Buznitsky, Ahmadreza Rofougaran, John Walley, Bojko Marholev, Roy Tobin, Prasanna Desai, Angel Polo, Hea Joung Kim, Paul A. Lettieri, Siukai Mak
  • Publication number: 20120252375
    Abstract: Aspects of the invention may comprise a control system in communication with a radio frequency (RF) front-end subsystem. The RF front-end subsystem comprises a plurality of antennas coupled to a plurality of wireless transmitters or receivers. Each of the wireless transmitters or receivers is operable to communicate via one or more of a plurality of wireless interfaces in the communication device. The control system is configured to detect, based on interference data provided by the RF front-end system, potential interference by an interfering one of said plurality of wireless transmitters or receivers with operations of an interfered-with one of said plurality of wireless transmitters or receivers. The control system is further configured to mitigate said detected interference operation by providing calibration data to said interfered-with one or more of said plurality of wireless transmitters or receivers.
    Type: Application
    Filed: June 11, 2012
    Publication date: October 4, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: John Walley, Prasanna Desai
  • Patent number: 8238292
    Abstract: A circuit includes a first wireless interface circuit that transceives packetized data between a host module and a first external device in accordance with a first wireless communication protocol, wherein the first wireless protocol carries wireless telephony data for communication with a wireless telephony network. A second wireless interface circuit transceives packetized data between the host module and a second external device in accordance with a second wireless communication protocol. The second wireless interface circuit includes at least one module that is shared with first wireless interface circuit. The first wireless interface circuit and the second wireless interface circuit operate in accordance with a wireless interface schedule that includes a first time interval where the first wireless interface device and the second wireless interface device contemporaneously use the at least one module.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: August 7, 2012
    Assignee: Broadcom Corporation
    Inventors: Mark Gonikberg, Prasanna Desai, Brima B. Ibrahim
  • Patent number: 8229041
    Abstract: Direct detection of wireless interferers in a communication device for multiple modulation types. One or more radios implemented within a communication device is/are operative to receive and process wireless communications. A wireless communication signal is processed to extract symbols there from. Various symbols groups are processed in accordance with correlation processing to identify potential interferers (e.g., other communication devices using common portions of frequency spectra). Alternatively, matched filter processing (e.g., using a Barker matched filter in some embodiments) operates on the various symbol groups to identify some potential interferers. Various combinations of correlation processing and matched filter processing may be employed in other instances (e.g., using any of a desired means of comparison, combining, etc.) in considering interferers identified in accordance with each of these two means.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: July 24, 2012
    Assignee: Broadcom Corporation
    Inventor: Prasanna Desai
  • Patent number: 8204533
    Abstract: A host device may be enabled to support a plurality of wireless interfaces, wherein some of these interfaces may be utilized to support human interface device (HID) based communication. The host device may be enabled to monitor activity of HID devices based on communications via HID capable wireless interfaces, may predict future use of the HID devices based on the monitoring, and may manage sniff communication that is utilized to track and/or detect activities in the HID devices. The management of the sniff communication may comprise adjusting characteristics of the sniff communication to enable improving throughput of other wireless interfaces available via the host device that may be affected by the sniff communication. The adjustment of the characteristics of sniff communication may comprise adjusting, statically and/or dynamically, length of sniff intervals and/or designating of sniff packets as high priority requests.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: June 19, 2012
    Assignee: Broadcom Corporation
    Inventors: Brima Ibrahim, Prasanna Desai
  • Patent number: 8200161
    Abstract: Aspects of the invention may comprise calibrating operations of wireless transmitters and/or receivers in a communication device to mitigate interference caused during concurrent communications via the wireless interfaces in the communication device. Calibration may be performed dynamically, and may comprise managing system parameters and/or physical resources of the communication device and/or the wireless transmitters and/or receivers; managing characteristics of wireless communication performed via the wireless transmitters and/or receivers; and/or managing isolation between two or more of said plurality of wireless transmitters and/or receivers in said communication device. The calibration may be performed based on data generated, via the wireless transmitters and/or receivers, during active and/or idle phases of operations. The data may be based on monitoring of RF effects caused by operations of other wireless transmitters and/or receivers.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: June 12, 2012
    Assignee: Broadcom Corporation
    Inventors: John Walley, Prasanna Desai
  • Publication number: 20120106419
    Abstract: A circuit includes a first wireless interface circuit that transceives packetized data between a host module and a first external device in accordance with a first wireless communication protocol, wherein the first wireless protocol carries wireless telephony data for communication with a wireless telephony network. A second wireless interface circuit transceives packetized data between the host module and a second external device in accordance with a second wireless communication protocol. The second wireless interface circuit includes at least one module that is shared with first wireless interface circuit. The first wireless interface circuit and the second wireless interface circuit operate in accordance with a wireless interface schedule that includes a first time interval where the first wireless interface device and the second wireless interface device contemporaneously use the at least one module.
    Type: Application
    Filed: November 28, 2011
    Publication date: May 3, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: Mark Gonikberg, Prasanna Desai, Brima B. Ibrahim
  • Publication number: 20120076061
    Abstract: Collaborative coexistence of co-located mobile WiMAX, wireless LAN, and/or Bluetooth radios. Within a communication device that includes multi-protocol communication capability, the various radio modules included within such a communication device operate cooperatively such that collisions are avoided between those various radios. When a first of the radio modules operates as governed by a relatively rigid frame structure, a second of the radio modules capitalizes upon that predetermined nature (of the relatively rigid frame structure) to support communication during times in which that first radio module has a lower level of activity (e.g., turned off completely, within a power savings mode, in a sleep mode, etc.). The radio module operation is performed within a time-orthogonal manner, such that multiple radio modules are not attempting to transmit or receive simultaneously.
    Type: Application
    Filed: December 3, 2011
    Publication date: March 29, 2012
    Applicant: BROADCOM CORPORATION
    Inventor: Prasanna Desai