Patents by Inventor Sharad D. Sambhwani

Sharad D. Sambhwani 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: 9084261
    Abstract: Systems, methods, devices, and computer program products are described for discontinuous multi-carrier uplink management in a wireless communication system. Common timing parameters may be identified for use in relation to discontinuous uplink transmissions on each of a two or more wireless carriers concurrently transmitting from an access terminal. A first operational state is associated with a first wireless carrier, while a second, different state is associated with a second wireless carrier. The first carrier may be operated in the first operational state concurrently with the second carrier being operated in the second operational state, with each carrier operated in accordance with the common timing parameters.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: July 14, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Aziz Gholmieh, Danlu Zhang, Bibhu P. Mohanty, Arjun Bharadwaj, Sharad D. Sambhwani
  • Patent number: 8964536
    Abstract: An apparatus and method enables a dynamic change from one carrier to another in a wireless telecommunication system. In one example, user equipment receives a preconfiguration message adapted to enable the user equipment to be preconfigured for an initial carrier and a subsequent carrier. Here, the user equipment initially communicates over an air interface utilizing the initial carrier frequency. Upon the satisfaction of certain conditions, such as one of the initial carriers being heavily loaded or nearing its capacity, a Node B provides an order to the user equipment to switch from its initial carrier to the secondary carrier, which was preconfigured. In this way, relatively rapid carrier switching provides for enhanced load balancing largely controlled by the Node B.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: February 24, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Sharad D. Sambhwani, Bibhu P. Mohanty
  • Patent number: 8842613
    Abstract: Systems and methodologies are described that facilitate split a common total power resource among a plurality of carriers. A power distribution scheme can be employed jointly across the plurality of carriers to determine an amount of power to allocate to respective carriers. Based upon an amount of power allocated, a packet format can be selected for each carrier based upon the amount of power allocated to the carrier and/or a serving grant associated with the carrier.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: September 23, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Aziz Gholmieh, Ravi Agarwal, Pavan Kumar Vitthaladevuni, Ozcan Ozturk, Sharad D. Sambhwani, Jilei Hou
  • Patent number: 8737374
    Abstract: Systems and methods for packet acknowledgement are disclosed. In one embodiment, codewords are redundantly used in order to decrease the total number of bits required for feeding back acknowledgment information or in order to increase the Euclidean space between codewords.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: May 27, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Sharad D. Sambhwani
  • Patent number: 8594155
    Abstract: Systems and methodologies are described that facilitate synthesizing a single baseband waveform from digital signals related to multiple carriers. Digital signals can be received relating to a plurality of carriers. The digital signals can result from spreading data symbols from transport blocks to create chip sequences, which can additionally be pulse shaped. The digital signals can be rotated in a positive or negative direction, such as according to a complex sinusoid or a negative representation thereof. The rotated signals can be combined or added to generate a single baseband waveform. The single baseband waveform can be converted to an analog signal, which can be up-converted and centered at a plurality of frequency carriers, which can be adjacent, assigned for transmitting the signal. In addition, optimizations can be provided to ensure threshold power ratio over the plurality of carriers for effectively transmitting jointly encoded signals.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: November 26, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Sharad D. Sambhwani, Zae Yong Choi, Heechoon Lee, Arjun Bharadwaj
  • Patent number: 8483238
    Abstract: An apparatus for selecting a size of a radio link control (RLC) protocol data unit (PDU) is described. The apparatus includes means for receiving a request for an RLC PDU from a medium access control (MAC) layer. The apparatus further includes means for selecting the size of the RLC PDU. The apparatus also includes means for generating the RLC PDU. The apparatus further includes means for sending the RLC PDU to the MAC layer.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: July 9, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Ozcan Ozturk, Rohit Kapoor, Sharad D. Sambhwani, Etienne F. Chaponniere
  • Patent number: 8472965
    Abstract: A method for wireless communications is provided. The method includes generating two or more uplink carrier signals across a wireless network and generating at least one active signal set for the wireless network. The method also includes generating one or more secondary active signal sets in accordance with the two or more uplink carrier signals to facilitate communications across the wireless network.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: June 25, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Rohit Kapoor, Aziz Gholmieh, Sharad D. Sambhwani
  • Patent number: 8296764
    Abstract: The disclosure describes internal synchronization in adaptive integrated circuitry which utilizes a data flow model for data processing. Task initiation and execution are controlled based upon data consumption measured in data buffer units, with initiation of and transitions between tasks based on a determined boundary condition within the data stream. When a data processing task is selected for synchronization, a boundary condition in a data stream is determined for commencement of the selected data processing task. Then, a timing marker for the commencement of the selected data processing task is determined relative to the data stream. The timing marker is dual-valued, providing a designated buffer unit and a designated byte or bit location within the designated buffer. The timing marker is communicated to the selected data processing task, which then commences data processing at a location in the data stream designated by the timing marker.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: October 23, 2012
    Assignee: NVIDIA Corporation
    Inventors: Ghobad Heidari-Bateni, Sharad D. Sambhwani
  • Patent number: 8254502
    Abstract: The present patent application discloses a method and apparatus for decoding, comprising decoding signals iteratively, mutually exchanging extrinsic information, calculating APP LLRs for both systematic and parity bits and making a hard decision after a plurality of iterations is completed based on accumulated soft information. The present patent application also discloses a method and apparatus for post decoding soft interference canceling, comprising generating updated a posteriori probabilities for systematic and parity bits from a turbo decoder, mapping the posteriori probabilities to soft symbols, quantizing the soft symbols, re-encoding a data packet, filtering a chip sequence, reconstructing an interference waveform, and scaling reconstruction filter coefficients using the symbols.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: August 28, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Sharad D. Sambhwani, Wei Zeng, Wei Zhang, Jan K Wegrzyn, Mehraban Iraninejad
  • Publication number: 20110188385
    Abstract: An apparatus for selecting a size of a radio link control (RLC) protocol data unit (PDU) is described. The apparatus includes means for receiving a request for an RLC PDU from a medium access control (MAC) layer. The apparatus further includes means for selecting the size of the RLC PDU. The apparatus also includes means for generating the RLC PDU. The apparatus further includes means for sending the RLC PDU to the MAC layer.
    Type: Application
    Filed: February 2, 2010
    Publication date: August 4, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Ozcan Ozturk, Rohit Kapoor, Sharad D. Sambhwani, Etienne F. Chaponniere
  • Publication number: 20100267346
    Abstract: Methods and apparatus for control signaling in a communication system using continuous valued measurement and feedback are disclosed. The control signaling utilizes delta-sigma modulation where a measured phase or amplitude of a received signal is used to determine a difference signal by subtracting a previously quantized integrated difference signal from the current measurement signal, and then integrating the difference signal. The integrated difference signal is quantized and transmitted to the device originating the received signal as feedback control signaling. The device originating the received signal may then filter the control signaling to obtain the desired control information used to adjust or control the transmission of the signal transmitted by the device. By utilizing delta-sigma modulation, a greater degree of control signaling precision is achieved when controlling variables such as phase or amplitude of the transmitted signals, thereby achieving improved communication system performance.
    Type: Application
    Filed: April 21, 2009
    Publication date: October 21, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Ming-Chang Tsai, Yibo Jiang, Sharad D. Sambhwani
  • Publication number: 20100260121
    Abstract: Systems, methods, devices, and computer program products are described for discontinuous multi-carrier uplink management in a wireless communication system. Common timing parameters may be identified for use in relation to discontinuous uplink transmissions on each of a two or more wireless carriers concurrently transmitting from an access terminal. A first operational state is associated with a first wireless carrier, while a second, different state is associated with a second wireless carrier. The first carrier may be operated in the first operational state concurrently with the second carrier being operated in the second operational state, with each carrier operated in accordance with the common timing parameters.
    Type: Application
    Filed: March 10, 2010
    Publication date: October 14, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Aziz Gholmieh, Danlu Zhang, Bibhu P. Mohanty, Arjun Bharadwaj, Sharad D. Sambhwani
  • Publication number: 20100238904
    Abstract: A method for wireless communications is provided. The method includes generating two or more uplink carrier signals across a wireless network and generating at least one active signal set for the wireless network. The method also includes generating one or more secondary active signal sets in accordance with the two or more uplink carrier signals to facilitate communications across the wireless network.
    Type: Application
    Filed: March 16, 2010
    Publication date: September 23, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Danlu Zhang, Rohit Kapoor, Aziz Gholmieh, Sharad D. Sambhwani
  • Publication number: 20100202392
    Abstract: Systems and methodologies are described that facilitate split a common total power resource among a plurality of carriers. A power distribution scheme can be employed jointly across the plurality of carriers to determine an amount of power to allocate to respective carriers. Based upon an amount of power allocated, a packet format can be selected for each carrier based upon the amount of power allocated to the carrier and/or a serving grant associated with the carrier.
    Type: Application
    Filed: February 8, 2010
    Publication date: August 12, 2010
    Applicant: QUALCOMM, INCORPORATED
    Inventors: Danlu Zhang, Aziz Gholmieh, Ravi Agarwal, Pavan Kumar Vitthaladevuni, Ozcan Ozturk, Sharad D. Sambhwani, Jilei Hou
  • Publication number: 20100202348
    Abstract: Systems and methods for packet acknowledgement are disclosed. In one embodiment, codewords are redundantly used in order to decrease the total number of bits required for feeding back acknowledgment information or in order to increase the Euclidean space between codewords.
    Type: Application
    Filed: January 5, 2010
    Publication date: August 12, 2010
    Applicant: QUALCOMM, Incorporated
    Inventor: Sharad D. Sambhwani
  • Publication number: 20100172395
    Abstract: Systems and methodologies are described that facilitate synthesizing a single baseband waveform from digital signals related to multiple carriers. Digital signals can be received relating to a plurality of carriers. The digital signals can result from spreading data symbols from transport blocks to create chip sequences, which can additionally be pulse shaped. The digital signals can be rotated in a positive or negative direction, such as according to a complex sinusoid or a negative representation thereof. The rotated signals can be combined or added to generate a single baseband waveform. The single baseband waveform can be converted to an analog signal, which can be up-converted and centered at a plurality of frequency carriers, which can be adjacent, assigned for transmitting the signal. In addition, optimizations can be provided to ensure threshold power ratio over the plurality of carriers for effectively transmitting jointly encoded signals.
    Type: Application
    Filed: January 4, 2010
    Publication date: July 8, 2010
    Applicant: QUALCOMM, Incorporated
    Inventors: Sharad D. Sambhwani, Zae Yong Choi, Heechoon Lee, Arjun Bharadwaj
  • Publication number: 20100158161
    Abstract: The present patent application discloses a method and apparatus for decoding, comprising decoding signals iteratively, mutually exchanging extrinsic information, calculating APP LLRs for both systematic and parity bits and making a hard decision after a plurality of iterations is completed based on accumulated soft information. The present patent application also discloses a method and apparatus for post decoding soft interference canceling, comprising generating updated a posteriori probabilities for systematic and parity bits from a turbo decoder, mapping the posteriori probabilities to soft symbols, quantizing the soft symbols, re-encoding a data packet, filtering a chip sequence, reconstructing an interference waveform, and scaling reconstruction filter coefficients using the symbols.
    Type: Application
    Filed: June 18, 2009
    Publication date: June 24, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Sharad D. Sambhwani, Wei Zeng, Wei Zhang, Jan Krzys Wegrzyn, Mehraban Iraninejad
  • Publication number: 20100135251
    Abstract: Systems and methodologies are described that facilitate communicating user plane data over common control resources by specifying a UTRAN radio network temporary identifier (U-RNTI). In this regard, a Node B or an RNC receiving the user plane data can associate the data to the UE based on the U-RNTI. The user plane data can be transmitted in a control message with the associated U-RNTI, such as a CELL UPDATE message or another message having a U-RNTI specified in a media access control (MAC)-i header or other header in the message. The control message can also include parameters regarding the existence and specifications of the user plane data. In this regard, a UE can communicate user plane data when in a (UTRAN) registration area paging channel (URA_PCH) or other relatively inactive state though it has not received an enhanced radio network temporary identifier (E_RNTI).
    Type: Application
    Filed: October 21, 2009
    Publication date: June 3, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Sharad D. Sambhwani, Rohit Kapoor, Yih-Hao Lin, Bongyong Song
  • Patent number: 7353516
    Abstract: The present invention concerns data flow control in adaptive integrated circuitry which utilizes a data flow model for data processing. The present invention controls task initiation and execution based upon data consumption measured in data buffer units. In the various embodiments, when a first task of a plurality of tasks is initiated, buffer parameter is determined and a buffer count is initialized for the first task. For each iteration of the first task using a data buffer unit of input data, the buffer count is correspondingly adjusted, such as incremented or decremented. When the buffer count meets the buffer parameter requirements, the state of the first task is changed, which may including stopping the first task, and a next action is determined, such as initiating a second task. The various apparatus embodiments include a hardware task manager, a node sequencer, a programmable node, and use of a monitoring task within an adaptive execution unit.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: April 1, 2008
    Assignee: NVIDIA Corporation
    Inventors: Ghobad Heidari-Bateni, Sharad D. Sambhwani
  • Patent number: 7197645
    Abstract: A system for detecting and identifying the identity of a base station or cell which transmits a scrambling code is provided. According to one aspect of the system, the system is used to perform scrambling code detection of eight (8) primary cells (each scrambling code being spaced sixteen (16) chips apart) in a group. According to another aspect of the system, a single scrambling code generator is used to generate a master scrambling code. The master scrambling code is then used to create individual scrambling codes which are used in correlation with received signals to detect in parallel which one of the eight (8) possible primary cells in the group transmitted the received signals. According to yet another aspect of the system, each of the correlators maintains a corresponding segment of the master scrambling code.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: March 27, 2007
    Assignee: QST Holdings, LLC.
    Inventors: Sharad D. Sambhwani, Ghobad Heidari-Bateni