Patents by Inventor Avneesh Agrawal

Avneesh Agrawal 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: 8873671
    Abstract: A system involves a transmitting device (for example, a first wireless communication device) and a receiving device (for example, a second wireless communication device). In the receiving device, LLR (Log-Likelihood Ratio) values are stored into an LLR buffer. LLR bit width is adjusted as a function of packet size of an incoming transmission to reduce the LLR buffer size required and/or to prevent LLR buffer capacity from being exceeded. The receiver may use a higher performance demodulator in order to maintain performance despite smaller LLR bit width. In the transmitting device, encoder code rate is adjusted as a function of receiver LLR buffer capacity and packet size of the outgoing transmission such that receiver LLR buffer capacity is not exceeded. Any combination of receiver LLR bit width adjustment, demodulator selection, and encoder code rate adjustment can be practiced to reduce LLR buffer size required while maintaining performance.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: October 28, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Hemanth Sampath, Avneesh Agrawal, Jeremy H. Lin
  • Patent number: 8867999
    Abstract: A method to mitigate interference in a wireless system is provided. The method includes processing a set of radio network identifiers and limiting a number of hypotheses associated with the radio network identifiers in order to mitigate interference in a wireless network. In another aspect, the method includes processing a set of hypotheses and limiting the set of hypotheses by limiting a number of downlink grants to a common space, limiting the number of downlink grants to a number of instances, or limiting the number of grants to a physical downlink control channel (PDCCH) type. In yet another aspect, the method includes processing a downlink set and generating a target termination level for the downlink data set, the termination level associated with a Hybrid automatic repeat-request.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: October 21, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Avneesh Agrawal, Peter Gaal, Ravi Palanki, Alexei Y. Gorokhov
  • Patent number: 8855704
    Abstract: Systems and methodologies are described that facilitate performing fast cell selection in a user device wherein the user device can select a serving sector from a list of sectors in its virtual active set (VAS), while in communication with a wireless network. The serving sector can be different from a nominal sector whose scrambling code the user device employs for transmission on the uplink, which scrambling code can be known to all sectors listed in the VAS for the user device. In this manner, all sectors in whose coverage area the user device is located can be included in the user device's VAS and can receive and demodulate transmissions there from.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: October 7, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Sharad Sambhwani, Avneesh Agrawal, Juan Montojo
  • Patent number: 8849316
    Abstract: Signaling-only access may be established with an access node under certain circumstances such as, for example, upon determining that a node is not authorized for data access at the access node. A node that is not authorized for data access at an access node may still be paged by the access node through the use of signaling-only access. In this way, transmissions by the access node may not interfere with the reception of pages at the node. A first node may be selected for providing paging while a second node is selected for access under certain circumstances such as, for example, upon determining that the second node provides more desirable service than the first node.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: September 30, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Gavin B. Horn, Avneesh Agrawal, Ashwin Sampath, Alexei Gorokhov, Naga Bhushan, Rajarshi Gupta, Fatih Ulupinar, Parag A. Agashe, Rajat Prakash, Aamod Khandekar, Ravi Palanki
  • Publication number: 20140286317
    Abstract: A method, apparatus, and channel structure for acknowledging assignment messages is provided. The method and apparatus allow for efficient signaling based upon the resources.
    Type: Application
    Filed: March 7, 2006
    Publication date: September 25, 2014
    Inventors: Avneesh Agrawal, Aamod Khandekar, Alexei Gorokhov
  • Patent number: 8842619
    Abstract: To support mobile stations that are not capable of demodulating the entire bandwidth or that can be made to demodulate less than the entire bandwidth, a system, apparatus and method are provided to schedule users on less than all of the bandwidth. Further, certain users can be scheduled on more of the bandwidth than others.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: September 23, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Aamod Dinkar Khandekar, Alexei Yurievitch Gorokhov, Avneesh Agrawal, Rajiv Vijayan, Edward Harrison Teague, Fatih Ulupinar
  • Patent number: 8842693
    Abstract: Systems and methodologies are described that facilitate reducing rank (e.g., of a user device) as a number of transmissions there from increases. Such rank step-down can improve interference resistance and facilitate maintaining code rate despite transmission propagation. Additionally, rank step-down information can be encoded along with CQI information to generate a 5-bit CQI signal that can facilitate updating a user's rank upon each CQI transmission (e.g., approximately every 5 ms). The described systems and/or methods can be employed in a single code word (SCW) wireless communication environment with a hybrid automatic request (HARQ) protocol.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: September 23, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Avneesh Agrawal, Aamod Khandekar, Hemanth Sampath, Tamer Kadous
  • Patent number: 8843069
    Abstract: Techniques for transmitting data with short-term interference mitigation in a wireless communication system are described. In one design, a first station (e.g., a base station or a terminal) may send a first message to at least one interfering station to request reduction of interference on at least one resource. The first station may send the first message in anticipation of receiving data on the at least one resource. An interfering station may receive the first message from the first station and may reduce interference on the at least one resource by reducing its transmit power and/or by steering its power in a direction different from the first station. The first station may thereafter receive data from a second station on the at least one resource. The techniques may be used for data transmission on the forward and reverse links.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: September 23, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Mohammad J. Borran, Aamod Khandekar, Naga Bhushan, Ashwin Sampath, Alexei Gorokhov, Avneesh Agrawal, Ravi Palanki, Gavin B. Horn
  • Patent number: 8831115
    Abstract: Techniques are provided to support multi-carrier code division multiple access (MC-CDMA) in an orthogonal uplink of a wireless communication system. A method of wireless multi-carrier communications comprises dividing sub-carriers on an uplink into non-overlapping groups, allocating a time-frequency block including a hopping duration and a non-overlapped group, respectively, assigning a different set of orthogonal codes to each user, spreading data (or pilot) symbols of each user over the allocated time-frequency block, wherein the data (or pilot) symbols of each user are spread using the different set of orthogonal codes assigned to each user, mapping each data (or pilot) symbol to a modulation symbol in the time-frequency block, generating an orthogonal waveform based on the mapped symbols, and transmitting the orthogonal waveform.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: September 9, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Arak Sutivong, Avneesh Agrawal
  • Patent number: 8825046
    Abstract: Techniques for transmitting data with short-term interference mitigation in a wireless communication system are described. In one design, a serving base station may send a message to a terminal to trigger short-term interference mitigation. In response, the terminal may send a message to request at least one interfering base station to reduce interference on at least one resource. Each interfering base station may determine a transmit power level to be used for the at least one resource and may send a pilot at this transmit power level. The terminal may estimate the channel quality of the at least one resource based on at least one pilot received from the at least one interfering base station. The terminal may send information indicative of the estimated channel quality to the serving base station. The serving base station may send a data transmission on the at least one resource to the terminal.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: September 2, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Mohammad J. Borran, Aamod Khandekar, Naga Bhushan, Ashwin Sampath, Alexei Gorokhov, Avneesh Agrawal, Ravi Palanki, Gavin B. Horn
  • Patent number: 8818285
    Abstract: Techniques for transmitting data with short-term interference mitigation in a wireless communication system are described. In one design, a first station (e.g., a base station or a terminal) may receive a message sent by a second station to request reduction of interference on at least one resource. In response to receiving the message, the first station may determine a first transmit power level to use for the at least one resource based on one or more factors such as a priority metric sent in the message, the buffer size at the first station, etc. The first station may send a power decision pilot on the at least one resource at a second transmit power level determined based on the first transmit power level.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: August 26, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Mohammad J. Borran, Aamod Khandekar, Naga Bhushan, Ashwin Sampath, Alexei Gorokhov, Avneesh Agrawal, Ravi Palanki, Gavin B. Horn
  • Patent number: 8811991
    Abstract: A wireless communications device is disclosed. The wireless communications device is configured to support a call over a cellular network or an IP network to a remote communications device. The wireless communications device is further configured to handoff the call between the cellular network and the IP network. An Interworking Function (IWF) is configured to maintain a call between a wireless communications device and a communications device as the wireless communications device is handed off between a cellular network and an IP network.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: August 19, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Nikhil Jain, Avneesh Agrawal, Ahmad Jalali, Charles A. Bergan
  • Patent number: 8811198
    Abstract: Systems and methodologies are described that facilitate employing interference-overload indications to generate pilot strength reports that can be leveraged to mitigate reverse link interference. An affected base station can send interference-overload indications when experiencing a strong interference/jamming scenario due to reverse link transmission by an offending access terminal. The offending access terminal can monitor interference-overload indications from the affected base station (e.g., although the affected base station can be excluded from an active set of the offending access terminal) and send a pilot strength report to a serving base station in response. The serving base station can receive the interference induced pilot strength report and command the offending access terminal not to transmit on certain channel resources (e.g., time, frequency, spatial, . . . ); thus, the affected base station can use these resources to schedule transmission(s) by access terminal(s) served thereby.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: August 19, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Naga Bhushan, Avneesh Agrawal
  • Patent number: 8811973
    Abstract: Techniques for managing peak-to-average power ratio (PAPR) for multi-carrier modulation in wireless communication systems. Different terminals in a multiple-access system may have different required transmit powers. The number of carriers to allocate to each terminal is made dependent on its required transmit power. Terminals with higher required transmit powers may be allocated fewer carriers (associated with smaller PAPR) to allow the power amplifier to operate at higher power levels. Terminals with lower required transmit powers may be allocated more carriers (associated with higher PAPR) since the power amplifier is operated at lower power levels. The specific carriers to assign to the terminals may also be determined by their transmit power levels to reduce out-of-band emissions. Terminals with higher required transmit powers may be assigned with carriers near the middle of the operating band, and terminals with lower required transmit powers may be assigned with carriers near the band edges.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: August 19, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Rajiv Vijayan, Avneesh Agrawal, Sanjay Jha
  • Publication number: 20140223479
    Abstract: A venue-cast system and method for providing and receiving venue level transmissions and services, including discovery of a venue specific transmission by receiving an overhead signal from a non-venue network, extracting information for receiving the venue specific transmission from the overhead signal, and tuning to receive the venue specific transmission based on the extracted information. The venue level transmission may be provided and received in a manner that does not prevent an access terminal from receiving a local area or wide area transmission.
    Type: Application
    Filed: December 10, 2013
    Publication date: August 7, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Raghuraman Krishnamoorthi, Pankaj V. Rahate, Pankaj Jain, Devarshi P. Shah, Pavel A. Seliverstov, George A. Rothrock, Nilabh Khare, Anil K. Wadhwani, Jiming Guo, Sanjiv Nanda, Fuyun Ling, Murali R. Chari, Avneesh Agrawal, Rinat Burdo, Prasanna Kannan, Krishna K. Mukkavilli, Reynaldo W. Newman, Michael M. Fan, Manoj M. Deshpande, Ranjith S. Jayaram
  • Patent number: 8798665
    Abstract: Systems and methodologies are described that facilitate transmitting control information in wireless networks. Portions of bandwidth can be blanked for transmitting control information, and the control information transmitters can utilize beacon symbols to convey the control information. In this regard, interference is mitigated with respect to data transmissions over the control information bandwidth. Selected frequencies of the beacon symbols in a codeword can be used to indicate the control information. The codewords can be encoded with an error control code to provide redundancy for decoding in the presence of some interference.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: August 5, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Palanki, Avneesh Agrawal, Alexei Gorokhov, Aamod Khandekar, Ashwin Sampath, Dexu Lin
  • Patent number: 8755848
    Abstract: The disclosure is directed to a mobile communication device, and method for controlling power saving features at the mobile device. A processor in the mobile device may be used to establish a network connection with a server in a first network. The mobile device may also include a transceiver that initiates transmission of a message to the server to determine if an incoming call request has been received via a second network. Advantageously, the transceiver is in a low power mode of operation for a selectable time interval when not communicating with the server.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: June 17, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Nikhil Jain, Avneesh Agrawal
  • Patent number: 8750908
    Abstract: A quick paging channel in a random access wireless communication system includes at least one bit in a quick paging frame identifying the presence of a paging message for an access terminal or group of access terminals. The quick paging bits identifying the presence of a paging message for a first access terminal is encoded with one or more quick paging bits corresponding to one or more additional access terminals to produce one or more forward error correction bits. The jointly encoded quick paging bits are broadcast to the access terminals by time division multiplexing the quick paging frame with additional frames of information.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: June 10, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Avneesh Agrawal, Rajat Prakash
  • Patent number: 8737229
    Abstract: Providing for improved access communication for wireless systems is described herein. By way of example, wireless devices can employ wireless resource re-use in selecting a subset of access communication resources, to mitigate interference on uplink access requests. Re-use can be based on current network conditions, or on a type of base station facilitating the wireless communication. In some aspects, planned resource re-use can be facilitated by an access terminal. The access terminal requests neighboring or interfering network access points to reserve a set of resources for a serving access point. Reserved resources can be conveyed to the serving access point with an uplink access probe, to further mitigate interference.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: May 27, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Aamod D. Khandekar, Avneesh Agrawal, Mohammad J. Borran, Naga Bhushan
  • Patent number: 8738019
    Abstract: Systems and methods are disclosed that facilitate dynamically de-assigning resources and communication channels for transmitting messages indicative of resource de-assigning. Systems and method for generating and interpreting de-assignment messages are also provided.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: May 27, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Alexei Gorokhov, Avneesh Agrawal, Aamod Khandekar