Patents by Inventor Ashok Mantravadi

Ashok Mantravadi 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: 20180302864
    Abstract: Aspects of the present disclosure provide techniques for the user equipment (UE) to select a power management mode from a plurality of power management modes supported by the UE based on decoding of a portion of the downlink subframe. For example, when the UE receives a subframe from a base station, the UE may decode a control channel region of the subframe to determine whether the subframe includes a channel grant allocated to the UE. If no channel grant is included in the subframe, the UE may select a power management mode for the UE from the plurality of power management modes supported by the UE that maximizes the UE's sleep opportunities while balancing the deficient performance costs.
    Type: Application
    Filed: March 20, 2018
    Publication date: October 18, 2018
    Inventors: Gaurav NIGAM, Sibasish DAS, Supratik BHATTACHARJEE, Ankit VERMA, Hongbo YAN, Navid EHSAN, Ashok MANTRAVADI, Surendra BOPPANA
  • Publication number: 20180160328
    Abstract: Techniques for access terminal radio link monitoring on a shared communication medium are disclosed. In an aspect, an access terminal detects a missed reference signal event associated with a radio link established on the shared communication medium, wherein detecting the missed reference signal event comprises determining that the access terminal did not detect a reference signal for measuring a quality of the radio link transmitted during a reference signal configuration window, assigns an error metric to the missed reference signal event based on reference signal monitoring capabilities of the access terminal, and triggers a radio link failure based on the assigned error metric. In an aspect, the missed reference signal event may be a missed Discovery Reference Signaling (DRS) event, the error metric may be a Block Error Rate (BLER) weight, and the reference signal for measuring the quality of the radio link comprises a Cell-specific Reference Signal (CRS).
    Type: Application
    Filed: November 30, 2017
    Publication date: June 7, 2018
    Inventors: Arumugam CHENDAMARAI KANNAN, Andrei Dragos RADULESCU, Chirag Sureshbhai PATEL, Tamer Adel KADOUS, Ashok MANTRAVADI, Aamod KHANDEKAR
  • Patent number: 9923611
    Abstract: Systems and methods are provided for enhancing signal quality at receivers in a wireless network. In one embodiment, an antenna is selected from a subset of antennas based on a signal quality parameter such as received signal power or signal-to-noise ratio (SNR). In another embodiment, multiple antennas are applied to independent signal processing paths for the respective antennas where output from the paths is then combined to enhance overall signal quality at the receiver.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: March 20, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Fuyun Ling, Linbo Li, Ashok Mantravadi
  • Patent number: 9867194
    Abstract: A system capacity improvement is achieved by dynamically selecting a particular antenna mode of operation from the multiple radio access technology modes. In some implementations, the system capacity improvement is achieved by dynamically generating an indication of a user equipment (UE) antenna capability during a communication connection. The UE's indication of its antenna capability is dynamic and/or is subject to change throughout the duration of the communication connection. The indication may be sent to a base station.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: January 9, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Tamer Adel Kadous, Ashok Mantravadi
  • Patent number: 9832785
    Abstract: A method of wireless communication includes adjusting a channel quality indicator (CQI) to compensate for coexistence interference experienced between communication resources (such as an LTE radio and a Bluetooth radio). The CQI may be set to zero, falsely indicating to a serving enhanced NodeB that a UE is out of range, thereby creating a gap in LTE operation that may be used by an alternate radio access technology. To compensate for fluctuating interference, the CQI may be adjusted to incorporate average coexistence interference over a period of time. Alternatively, the CQI at a time may incorporate coexistence interference regardless of whether interference is experienced at that specific time. A CQI value may also be boosted to compensate for a CQI backoff. CQI may be adjusted to avoid a spiral of death effect.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: November 28, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Tamer Adel Kadous, Pranav Dayal, Ashok Mantravadi, Peter Gaal, Jibing Wang
  • Publication number: 20170324458
    Abstract: Techniques are described for wireless communication at a wireless communication device. A determination may be made regarding the number of receive chains, of a plurality of receive chains, to enable for a channel. Power to the receive chains may be regulated based on the determined number of enabled receive chains. The determination may be based on a transmission scheduling rate for the wireless communication device and a rank for the channel. In some examples, the determination may further be based on a channel quality of the channel and/or a type of traffic scheduled for the channel.
    Type: Application
    Filed: May 1, 2017
    Publication date: November 9, 2017
    Inventors: Qijia Liu, Ashok Mantravadi, Jae Won Yoo, Amir Aminzadeh Gohari
  • Patent number: 9686800
    Abstract: Certain aspects of the present disclosure relate to techniques for reporting Channel Quality Indicator (CQI). In certain aspects, a User Equipment (UE) may schedule switch from at least a first set of zero or more antennas used by the UE, to at least one second set of zero or more antennas, wherein the first and second sets differ by at least one antenna. The UE may determine a Channel Quality Indicator (CQI) to be reported from the UE for use at a base station in a subsequent CQI subframe set, based at least on the scheduled switch. The UE may thereafter transmit the CQI to the base station.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 20, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Arul Durai Murugan Palanivelu, Kapil Bhattad, Dhananjay Ashok Gore, Ashok Mantravadi
  • Patent number: 9585156
    Abstract: When communications of a single radio access technology (RAT), or different radio access technologies in a proximate communication spectrum are operating at the same time, potential interference between devices may occur. To reduce the interference, the time division duplex (TDD) configuration of one or more conflicting device may be altered. For example, at the edge of a communication region, TDD configurations used by edge base stations to communicate with mobile devices may be set to reduce interference. As another example, communications of a first device may be altered so the first device schedules uplink communications when a second device also has uplink communications scheduled. Other configurations may also be implemented.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: February 28, 2017
    Assignee: QUALCOMM INCORPORATED
    Inventors: Kapil Bhattad, Dhananjay Ashok Gore, Tamer Adel Kadous, Ashok Mantravadi, Ahmed Sadek, Raj Kumar
  • Patent number: 9578649
    Abstract: To improve performance in devices capable of communication using multiple radio access technologies (RATs), a gap pattern may be constructed in which a first RAT is quieted during certain times to allow for a second RAT to operate without interference. Gap patterns may be constructed based on timeline constraints, such as grant scheduling and HARQ performance, or based on desired performance levels of one or more of the RATs. Gap patterns may be selected by a user equipment or base station. Gap patterns may be selected to protect information in certain subframes. Potential gap patterns may be assigned weights indicating their desirability.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: February 21, 2017
    Assignee: QUALCOMM INCORPORATED
    Inventors: Pranav Dayal, Tamer Adel Kadous, Rajat Prakash, Ashok Mantravadi, Ahmed K. Sadek
  • Patent number: 9554319
    Abstract: Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel, employing information on current MLC decoding status, to facilitate providing seamless reception of the FLO signal, which can be superframe synchronized between RF channels. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: January 24, 2017
    Assignee: QUALCOMM INCORPORATED
    Inventors: Linbo Li, Ashok Mantravadi, Fuyun Ling, Raghuraman Krishnamoorthi
  • Publication number: 20160309494
    Abstract: A method of wireless communication includes adjusting a channel quality indicator (CQI) to compensate for coexistence interference experienced between communication resources (such as an LTE radio and a Bluetooth radio). The CQI may be set to zero, falsely indicating to a serving enhanced NodeB that a UE is out of range, thereby creating a gap in LTE operation that may be used by an alternate radio access technology. To compensate for fluctuating interference, the CQI may be adjusted to incorporate average coexistence interference over a period of time. Alternatively, the CQI at a time may incorporate coexistence interference regardless of whether interference is experienced at that specific time. A CQI value may also be boosted to compensate for a CQI backoff. CQI may be adjusted to avoid a spiral of death effect.
    Type: Application
    Filed: June 13, 2016
    Publication date: October 20, 2016
    Inventors: Tamer Adel KADOUS, Pranav DAYAL, Ashok MANTRAVADI, Peter GAAL, Jibing WANG
  • Patent number: 9398602
    Abstract: A method of wireless communication includes adjusting a channel quality indicator (CQI) to compensate for coexistence interference experienced between communication resources (such as an LTE radio and a Bluetooth radio). The CQI may be set to zero, falsely indicating to a serving enhanced NodeB that a UE is out of range, thereby creating a gap in LTE operation that may be used by an alternate radio access technology. To compensate for fluctuating interference, the CQI may be adjusted to incorporate average coexistence interference over a period of time. Alternatively, the CQI at a time may incorporate coexistence interference regardless of whether interference is experienced at that specific time. A CQI value may also be boosted to compensate for a CQI backoff. CQI may be adjusted to avoid a spiral of death effect.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: July 19, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Tamer Adel Kadous, Pranav Dayal, Ashok Mantravadi, Peter Gaal, Jibing Wang
  • Patent number: 9391751
    Abstract: A system and method for frequency diversity uses interleaving in a wireless communication system utilizing orthogonal frequency division multiplexing (OFDM) with various FFT sizes. Subcarriers of one or more interlaces are interleaved in a bit reversal fashion and the one or more interlaces are interleaved.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: July 12, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Ashok Mantravadi, Murali Ramaswamy Chari, Michael Mao Wang, Fuyun Ling, Rajiv Vijayan, Raghuraman Krishnamoorthi
  • Patent number: 9379789
    Abstract: Dynamic adjustment of antenna selection period at a wireless communication device or user equipment having two or more antennas. The described approaches consider an antenna selection performance metric. The antenna selection performance metric may include both measurement overhead (capacity loss due to measurements) and antenna switching capacity gain (gain in capacity through switching antenna subsets). The antenna selection performance metric may further include an estimate of UE speed or an antenna selection change rate. The antenna selection period may be adjusted by increasing or decreasing the antenna selection period based on the antenna selection performance metric. Antenna selection may be enabled or disabled based on the antenna selection performance metric.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: June 28, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Jamie Menjay Lin, Ashok Mantravadi, Francesco Negro, Petru Cristian Budianu, Taesang Yoo, Xiaoxia Zhang, Tao Luo
  • Patent number: 9337982
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for adaptive antenna management in LTE. Devices and networks capable of transmitting and receiving signals using a variable number of transmitting or receiving antennas using LTE radio access technology are described.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: May 10, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Stefan Geirhofer, Wanshi Chen, Peter Gaal, Hao Xu, Xiaoxia Zhang, Ashok Mantravadi, Tao Luo
  • Patent number: 9282462
    Abstract: A method of wireless communication includes receiving signaling from a served User Equipment (UE), via a radio access technology, indicating an interfering technology associated with coexistence issues experienced by the served UE. The method also includes calculating future subframes expected to experience coexistence issues based on previous subframes estimated to have experienced coexistence issues.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: March 8, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Pranav Dayal, Tamer A. Kadous, Ashok Mantravadi, Jibing Wang, Rajat Prakash
  • Patent number: 9277564
    Abstract: A method of wireless communication includes monitoring coexistence issues among supported radios in a User Equipment (UE). The method includes determining a coexistence policy for communication resource operation within a user equipment (UE) and configuring communication resources of the user equipment in accordance with the determined coexistence policy. The policy may give priority to an LTE modem, an ISM modem, or may implement a variable priority scheme. The policy may be communicated to each modem from a host over a software messaging communication line. Modems in the UE may communicate with each other through logical lines providing real time communication. The policy may determine the operation of each modem and the treatment of the logical lines by each modem.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: March 1, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Jibing Wang, Tamer Adel Kadous, Ashok Mantravadi, Joel Benjamin Linsky
  • Patent number: 9246728
    Abstract: A system and method for frequency diversity uses interleaving in a wireless communication system utilizing orthogonal frequency division multiplexing (OFDM) with various FFT sizes. Subcarriers of one or more interlaces are interleaved in a bit reversal fashion and the one or more interlaces are interleaved in the bit reversal fashion.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: January 26, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Michael Mao Wang, Murali Ramaswamy Chari, Ashok Mantravadi, Fuyun Ling, Rajiv Vijayan, Raghuraman Krishnamoorthi
  • Patent number: 9226173
    Abstract: A method for wireless communications includes determining a time division duplex (TDD) configuration of a non-serving network. The method also includes detecting interference from the non-serving network based at least in part on the TDD configuration of the non-serving network. The method further includes signaling an eNodeB of the interference based at least in part on the detecting.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: December 29, 2015
    Assignee: QUALCOMM INCORPORATED
    Inventors: Ahmed Kamel Sadek, Tamer Adel Kadous, Pranav Dayal, Ashok Mantravadi
  • Patent number: 9225493
    Abstract: The present disclosure includes systems and methods for operating a wireless communication system in multiple modes. The system is configured in a first mode when a transmission interference in a receiver of a wireless device is below a first threshold. The system is configured in one or more intermediate modes when the transmission interference is above the first threshold and below a second threshold. The system is configured in a second mode when the transmission interference is above the second threshold. The one or more intermediate modes activate interference management processes and the wireless device transmits data and receives data simultaneously. In some embodiments, transmission interference may be based on an SINR measurement.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: December 29, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoyin He, Ashok Mantravadi, Bruce A Judson, Prashanth Akula