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).

  • Publication number: 20150245372
    Abstract: Certain embodiments of the invention may be found in a method and system for antenna and radio front-end topologies for a system-on-a-chip (SOC) device that combines Bluetooth and IEEE 802.11 b/g WLAN technologies. A single chip radio device that supports WLAN and Bluetooth technologies receives a WLAN signal in a WLAN processing circuitry of the radio front-end and in a Bluetooth processing circuitry of the radio front-end. Signals generated by the WLAN processing circuitry and the Bluetooth processing circuitry from the received WLAN signal may be combined in a diversity combiner that utilizes selection diversity gain combining or maximal ratio combining (MRC). When a generated signal is below a threshold value, the signal may be dropped from the combining operation. A single antenna usage model may be utilized with the single chip radio device front-end topology to support WLAN and Bluetooth communications.
    Type: Application
    Filed: May 8, 2015
    Publication date: August 27, 2015
    Inventors: Prasanna DESAI, Brima Babatunde IBRAHIM
  • Publication number: 20150222316
    Abstract: A method includes determining that an antenna shared between a Bluetooth transceiver and a WLAN transceiver is available to the WLAN transceiver based on an activity signal associated with the Bluetooth transceiver. Access to the shared antenna is provided to the WLAN transceiver based on the determination, and the WLAN transceiver is configured to use diversity in transacting WLAN signals via a plurality of antennas, including the shared antenna. Access to the shared antenna is transferred from the WLAN transceiver to the Bluetooth transceiver based on the activity signal.
    Type: Application
    Filed: April 13, 2015
    Publication date: August 6, 2015
    Inventors: Brima IBRAHIM, Prasanna DESAI, Mark GONIKBERG
  • 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: 9059782
    Abstract: Certain embodiments of the invention may be found in a method and system for antenna and radio front-end topologies for a system-on-a-chip (SOC) device that combines Bluetooth and IEEE 802.11 b/g WLAN technologies. A single chip radio device that supports WLAN and Bluetooth technologies receives a WLAN signal in a WLAN processing circuitry of the radio front-end and in a Bluetooth processing circuitry of the radio front-end. Signals generated by the WLAN processing circuitry and the Bluetooth processing circuitry from the received WLAN signal may be combined in a diversity combiner that utilizes selection diversity gain combining or maximal ratio combining (MRC). When a generated signal is below a threshold value, the signal may be dropped from the combining operation. A single antenna usage model may be utilized with the single chip radio device front-end topology to support WLAN and Bluetooth communications.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: June 16, 2015
    Assignee: Broadcom Corporation
    Inventors: Prasanna Desai, Brima Ibrahim
  • Patent number: 9031608
    Abstract: A method includes determining that an antenna shared between a Bluetooth transceiver and a WLAN transceiver is available to the WLAN transceiver based on an activity signal associated with the Bluetooth transceiver. Access to the shared antenna is provided to the WLAN transceiver based on the determination, and the WLAN transceiver is configured to use diversity in transacting WLAN signals via a plurality of antennas, including the shared antenna. Access to the shared antenna is transferred from the WLAN transceiver to the Bluetooth transceiver based on the activity signal.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: May 12, 2015
    Assignee: Broadcom Corporation
    Inventors: Brima Ibrahim, Prasanna Desai, Mark Gonikberg
  • Patent number: 9031604
    Abstract: Certain aspects of a method and system for providing wireless communication may include a single integrated circuit (IC) that handles communication for at least a Bluetooth (BT) connection and a Wireless Local Area Network (WLAN) connection by controlling transmission of acknowledgement signals based on a measured voice quality for one or both of the BT connection and the WLAN connection. The transmission of the acknowledgement signals communicated from the mobile station to an access point may be controlled. A BT priority signal may be asserted if data to be transmitted comprises high quality voice (HV3) data. The transmission of the acknowledgement signals may be controlled by raising a priority of an asserted WLAN priority signal higher than a priority of the asserted BT priority signal. The voice data may be transmitted via high quality voice (HV3) frames over the BT connection based on the asserted WLAN priority signal.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: May 12, 2015
    Assignee: Broadcom Corporation
    Inventors: Prasanna Desai, Shawn Stevenson
  • Publication number: 20150118956
    Abstract: A communication device includes a first and second near-field wireless (NFW) module operating with a first and second protocol, respectively. A module and method to improve the operational efficiency of the first and second NFW modules are disclosed. Due to close proximity between the first and second NFW modules in the communication device, an undesirable parasitic inductive coupling can occur that can degrade the operational performance of the modules. The first NFW module can be configured to control inductive coupling of the second NFW module when an electromagnetic (EM) field operating with the first protocol is detected. Additionally, the second NFW module can be configured to control inductive coupling of the first NFW module when an EM field operating with the second protocol is detected. Controlling the inductive coupling of each module can be performed by means of detuning an inductive coupling element of each module.
    Type: Application
    Filed: October 24, 2013
    Publication date: April 30, 2015
    Applicant: Broadcom Corporation
    Inventors: Prasanna Desai, John Walley, Henrik Tholstrup Jensen, Steven Deane Hall, Domitille Esnard-Domerego, Hea Joung Kim, Yasantha Rajakarunanayake, Ming Lin, Vadim Bishtein, Nhan Quang Tran, Ntsanderh Azenui
  • Patent number: 8996962
    Abstract: A plurality of encrypted packets having common payload data are received, wherein each of the plurality of encrypted packets includes a corresponding parity check field, and wherein a corresponding parity check syndrome for each of the plurality of encrypted packets indicates at least one bit error. A payload portion of each of the plurality of encrypted packets is decrypted to generate a plurality of decrypted payload portions. At least one chase coding technique is used to generate a corrected decrypted payload, based on at least one candidate bit error position and further based on the corresponding parity check syndrome for at least one of the plurality of encrypted packets.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: March 31, 2015
    Assignee: Broadcom Corporation
    Inventors: Robert W. Zopf, Prasanna Desai, Norbert Grunert
  • Patent number: 8983523
    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: November 20, 2013
    Date of Patent: March 17, 2015
    Assignee: Broadcom Corporation
    Inventors: Brima Ibrahim, Prasanna Desai
  • Patent number: 8942329
    Abstract: A method for frequency selection in a wireless communication system, includes performing in a wireless device, receiving at least one signal at a current frequency; processing at least one data packet received via the received at least one signal to determine the presence of bit errors; characterizing the received at least one signal received at the current frequency based on the processing of the at least one data packet; classifying the current frequency based on at least the characterization of the received at least one signal; and selecting the current frequency based on the classification. At least one signal strength measurement may be performed on the received at least one signal, and the processing of the at least one data packet may be performed within a current channel classification update interval.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: January 27, 2015
    Assignee: Broadcom Corporation
    Inventors: Prasanna Desai, Sven Jerlhagen, Brima Ibrahim, Siukai Mak, Asif Grushkevich, John Walley
  • Patent number: 8913599
    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: February 25, 2013
    Date of Patent: December 16, 2014
    Assignee: Broadcom Corporation
    Inventors: Mark Gonikberg, Prasanna Desai
  • Publication number: 20140341108
    Abstract: A device implementing a system for managing interference between collocated radios may include a first radio module, a collocated second radio module, and a host processor. The first radio module may be configured to generate a collocated radio tolerance indicator that indicates a tolerance of the first radio module to interference caused by the collocated second radio module when the collocated second radio module is transmitting, and provide the collocated radio tolerance indicator to a host processor when a second collocated radio module is transmitting. The host processor may be configured to control the second radio module based at least in part on the collocated radio tolerance indicator.
    Type: Application
    Filed: June 4, 2013
    Publication date: November 20, 2014
    Inventors: Prasanna DESAI, Siukai Mak
  • Publication number: 20140341201
    Abstract: Hybrid location determination for wireless communication device. Various services that may be used by a wireless communication device within a particular location may be referred to as location based services (LBS). As such, means by which the location of a wireless communication device that may use such available services, within such a locale, is made by using more than one type of location determination approach. For example, a wireless communication device includes communication capability (e.g., RX and TX) in accordance with a first communication protocol (e.g., Bluetooth) and also includes a communication capability (e.g., RX only) in accordance with a second communication protocol (e.g., WiFi/WLAN (Wireless Local Area Network)). The RX capability is operative to assist in location determination for the wireless communication device based on knowledge of at least one wireless communication device that communicates with the wireless communication device.
    Type: Application
    Filed: June 2, 2014
    Publication date: November 20, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Brima B. Ibrahim, Prasanna Desai, Donald L. Fuchs, Craig Ochikubo
  • Patent number: 8874034
    Abstract: Aspects of the invention may comprise managing operations of BLE interfaces and/or other radio interfaces in a wireless device to mitigate interference to communication via the BLE interfaces by the other radio interfaces. Operating parameters may be communicated between the BLE interfaces and the other radio interfaces to enable mitigating the interference to the BLE interfaces, and at least some of the BLE interfaces and/or the other radio interfaces may be configured based on the communicated operating parameters. The operating parameters may comprise adaptive frequency hopping (AFH) maps that may be adjusted to prevent use of common and/or used channels. The communication device may detect energy associated with BLE communication via scan of all or some of channels used for BLE communication. BLE communication may be predicted based on monitoring of frequency bands used during BLE communication, and/or monitoring of events that may trigger and/or occur during BLE communication.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: October 28, 2014
    Assignee: Broadcom Corporation
    Inventors: John S. Walley, Brima Babatunde Ibrahim, Steven Hall, Prasanna Desai, Yuan Zhuang
  • Patent number: 8849205
    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: September 25, 2013
    Date of Patent: September 30, 2014
    Assignee: Broadcom Corporation
    Inventors: Prasanna Desai, Angel Polo, Chikan Kwan, Yuan Zhuang, Ash Kapur, Norbert Grunert, Brima Ibrahim, John Walley
  • 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
  • Publication number: 20140221028
    Abstract: In collocated radios, interference is mitigated to permit concurrent radio operation. In response to detection of imminent transmission of interfering wireless (i.e., RF jammer) signals, gain settings of one or more stages of front-end receiver amplifiers may be quickly configured to permit concurrent frequency division operation instead of consecutive time-division operation. This expansion of concurrent operation may improve communication bandwidth and/or may produce reliable, consistent results. Gain control responsive to detection of imminent RF jamming may maintain amplification in a linear range where interference can be filtered out. Receiver gain may be shifted from a default high gain or high sensitivity setting to lower gain to maintain integrity of a signal of interest (SoI), which avoids clipping, distortion and unwanted products caused by a high power jamming signal that could otherwise make it impossible to recover the SoI.
    Type: Application
    Filed: April 26, 2013
    Publication date: August 7, 2014
    Applicant: Broadcom Corporation
    Inventors: Prasanna Desai, Gabriel Desjardins, Vincent Roussel
  • Patent number: 8798121
    Abstract: A circuit includes a first wireless interface circuit that communicates packetized data to a first external device in accordance with a first wireless communication protocol. A second wireless interface circuit communicates packetized data to a second external device in accordance with a second wireless communication protocol. A plurality of signal lines communicate at least four lines of cooperation data between the first wireless interface circuit and the second wireless interface circuit, wherein the cooperation data relates to cooperate transceiving in a common frequency spectrum.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: August 5, 2014
    Assignee: Broadcom Corporation
    Inventors: Prasanna Desai, Mark Gonikberg, Brima B. Ibrahim, Edward H. Frank
  • Publication number: 20140210665
    Abstract: Angle of arrival and/or range estimation within a wireless communication device. Appropriate processing of communications received by a wireless communication device is performed to determine the angle of arrival of the communication (e.g., with respect to some coordinate basis of the wireless communication device). Also, appropriate processing of the communications may be performed in accordance with range estimation as performed by the wireless communication device to determine the distance between the transmitting and receiving wireless communication devices. There are two separate modes of packet processing operations that may be performed: (1) when contents of the received packet are known, and (2) when contents of the received packet are unknown. The wireless communication device includes a number of antenna, and a switching mechanism switches from among the various antennae capitalizing on the spatial diversity of the antennae to generate a multi-antenna signal.
    Type: Application
    Filed: April 1, 2014
    Publication date: July 31, 2014
    Applicant: Broadcom Corporation
    Inventors: Prasanna Desai, Brima B. Ibrahim, Siukai Mak
  • Publication number: 20140177603
    Abstract: A coexistence signaling scheme for radio communications is described. In one embodiment, a method for coexistence signaling includes establishing first communications and second communications with separate access points or base stations. The method further includes determining protocol timings of the first and second communications. Based on various communications parameters, protocol timings, and identified interference conditions, the method includes generating one or more priority signals to manage the first and second communications. According to certain aspects, overlapping channel conditions can be avoided while maintaining acceptable communications data throughput.
    Type: Application
    Filed: February 7, 2013
    Publication date: June 26, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Neeraj Poojary, Prasanna Desai, Sudhir Prajapati, Sachin Gupta, Pawan Kumar, Gabriel Desjardins, Sanjay Saha