Patents by Inventor Ahmad Khoshnevis

Ahmad Khoshnevis 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: 20120120817
    Abstract: A method for reporting uplink control information (UCI) by a user equipment (UE) is described. Downlink channels are measured to obtain channel state information (CSI). Radio resource control (RRC) signaling is received from an eNode B. It is determined whether simultaneous physical uplink control channel (PUCCH) and physical uplink shared channel (PUSCH) transmission is enabled. One or more CSI reports are transmitted on the PUSCH according to the RRC signaling.
    Type: Application
    Filed: November 15, 2010
    Publication date: May 17, 2012
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Ahmad Khoshnevis, Zhanping Yin, Shohei Yamada, Sayantan Choudhury
  • Publication number: 20120088533
    Abstract: A User Equipment (UE) configured for allocating resources and encoding for Channel Quality Indicator (CQI) is described. The UE includes a processor and instructions stored in memory. The UE receives Radio Resource Control (RRC) signaling, receives a reference signal and determines a Channel Quality Indicator (CQI) based on the reference signal. The UE also determines a format for CQI transmission. If use of Format 3 is determined the UE determines cells for CQI reporting based on the RRC signaling and determines an encoding. The UE also encodes a feedback message based on the encoding and transmits the feedback message.
    Type: Application
    Filed: October 11, 2010
    Publication date: April 12, 2012
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Ahmad Khoshnevis, Shohei Yamada, Zhanping Yin, Sayantan Choudhury
  • Publication number: 20110269489
    Abstract: A method for assigning and coordinating uplink reference signals for cooperative communication is disclosed. Data about an assigned uplink reference signal sequence used by a wireless communication device is received at a non-serving base station. An uplink reference signal estimate is determined based on the data. The uplink reference signal estimate is used to coherently demodulate a signal received from the wireless communication device or is used to estimate an uplink channel between the non-serving base station and the wireless communication device.
    Type: Application
    Filed: April 30, 2010
    Publication date: November 3, 2011
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Ahmad Khoshnevis, John M. Kowalski, Sayantan Choudhury, Kimihiko Imamura
  • Publication number: 20110246840
    Abstract: A communication device configured for transmission of Acknowledgement and Negative Acknowledgement (ACK/NACK) is described. The communication device includes a processor and instructions stored in memory. The communication device determines one or more thresholds based on a size of one or more code words and generates a compressed ACK/NACK sequence. The compressed ACK/NACK sequence identifies one or more correctly received code words and one or more incorrectly received code words if the number of incorrectly received code words is less than the threshold. If the number of incorrectly received code words is greater than the threshold, the compressed ACK/NACK sequence indicates that all of the one or more code words were incorrectly received.
    Type: Application
    Filed: April 2, 2010
    Publication date: October 6, 2011
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Ahmad Khoshnevis, Lizhong Zheng, John M. Kowalski
  • Publication number: 20110201341
    Abstract: A base station configured for coordinating uplink resource allocation is described. The base station includes a processor and instructions stored in memory. The base station generates uplink resource allocation information for one or more wireless communication devices. The uplink resource allocation information is sent to one or more base stations. The base station allocates uplink resources based on the uplink resource allocation information. The base station sends an assignment to one or more wireless communication devices based on the uplink resource allocation information.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 18, 2011
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Sayantan Choudhury, Ahmad Khoshnevis, Kimihiko Imamura
  • Patent number: 7986673
    Abstract: A method for reducing feedback overhead in a wireless communications system is described. Channel quality indicator (CQI) values corresponding to a measured channel quality are received from one or more mobile communications devices. The mobile communications devices to be scheduled at a future time are estimated. CQI values are requested from the mobile communications devices that are estimated to be scheduled at a future time.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: July 26, 2011
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Ahmad Khoshnevis, Shugong Xu
  • Publication number: 20110041021
    Abstract: For downlink cooperative multi-point (CoMP) communication, each cooperating transmission point (e.g., base station) may send a retransmission packet with a different redundancy version to a user equipment (UE). Mechanisms may be provided to determine which transmission point should send packets with which redundancy version. For uplink CoMP, in order to reduce the backhaul overhead, each cooperating base station may share only a fraction of the retransmitted packet with the serving base station. Also, different retransmission packets with different redundancy versions can be transmitted to different cooperating base stations using spatial degrees of freedom.
    Type: Application
    Filed: August 14, 2009
    Publication date: February 17, 2011
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Ahmad Khoshnevis, Sayantan Choudhury
  • Publication number: 20100322185
    Abstract: The present disclosure relates to component carrier (CC) selection in a wireless communication system. A user equipment (UE) that is in idle mode may receive a reference signal (RS) from an evolved Node B (eNB), obtain signal quality measurements with respect to the RS, and switch to a new CC based on the signal quality measurements. For a UE that is in connected mode, an eNB may obtain uplink channel condition information corresponding to uplink CCs, obtain downlink channel condition information corresponding to downlink CCs, and select a CC pair for the UE to use based on the uplink channel condition information and the downlink channel condition information.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 23, 2010
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Kenneth J. Park, Ahmad Khoshnevis, Kimihiko Imamura, John M. Kowalski, Sayantan Choudhury
  • Publication number: 20100232336
    Abstract: A method of transmitting data from multiple base stations to a user equipment (UE) with possibly different numbers of antennas selected at the individual cooperating base stations is described. Also described is a method of transmitting data from a UE to multiple base stations with possibly different numbers of antennas selected at the individual cooperating base stations.
    Type: Application
    Filed: March 13, 2009
    Publication date: September 16, 2010
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Sayantan Choudhury, Ahmad Khoshnevis
  • Publication number: 20100235709
    Abstract: A method of encoding that uses standard codecs such as linear encoders and decoders for encoding and decoding data with different levels of robustness to errors is described. In one configuration, multiple encoders may be utilized, and one of the encoders may use a standard encoder such as a turbo code followed by a nonlinearity that creates an unequal distribution of ones and zeros in a binary representation of the code. In another configuration, a coder may be utilized that represents message outputs as “channels” that create state transitions (or symbol errors) in a data forward error correction coder.
    Type: Application
    Filed: March 13, 2009
    Publication date: September 16, 2010
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: John M. Kowalski, Zhanping Yin, Sayantan Choudhury, Kimihiko Imamura, Lizhong Zheng, Ahmad Khoshnevis
  • Publication number: 20100112998
    Abstract: A method for self-configuration of offset factors between two base stations in a wireless communications system is described. A first offset factor is sent to a first user equipment (UE) by a first base station. An offset factor is an indication of the reselection area around a home evolved nodeB (HeNB). A second offset factor is received from a second UE. The first offset factor is modified using the second offset factor. The modified first offset factor is sent to the first UE.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 6, 2010
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Sayantan Choudhury, Kenneth J. Park, Ahmad Khoshnevis
  • Publication number: 20100067491
    Abstract: A method for base station reselection in a wireless communications system is disclosed. The method may determine a first indication of signal strength for a first signal sent from a first base station and received by a user equipment (UE). The method may also determine a second indication of signal strength for a second signal sent from a second base station and received by the UE. The method may further determine a relative signal strength based on the first indication of signal strength and the second indication of signal strength. The method may also determine a Q factor based on the relative signal strength. The Q factor may be an indication of when base station reselection should be performed.
    Type: Application
    Filed: September 18, 2008
    Publication date: March 18, 2010
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Kenneth J. Park, Sayantan Choudhury, Ahmad Khoshnevis
  • Publication number: 20100022184
    Abstract: A method for selective transmission by a relay node in a wireless communications system is described. A signal is received. Channel quality information is received. A threshold value is determined. The channel quality information is compared to the threshold value. The signal is transmitted if the channel quality information is above the threshold value.
    Type: Application
    Filed: July 22, 2008
    Publication date: January 28, 2010
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Ahmad Khoshnevis, John M. Kowalski, Kenneth J. Park
  • Publication number: 20090296595
    Abstract: A method for reducing feedback overhead in a wireless communications system is described. Channel quality indicator (CQI) values corresponding to a measured channel quality are received from one or more mobile communications devices. The mobile communications devices to be scheduled at a future time are estimated. CQI values are requested from the mobile communications devices that are estimated to be scheduled at a future time.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 3, 2009
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Ahmad Khoshnevis, Shugong Xu
  • Publication number: 20080310405
    Abstract: A cooperative cluster of wireless nodes exchange data before cooperatively communicating with a destination node over a MIMO channel. In a cooperative cluster of M nodes, each node shares 1/M of its own data with each of the other nodes, and keeps 1/M of its own data for transmission. Each node receives 1/M of data from each cooperative node. The data is merged at each cooperative node, and transmitted to the destination node.
    Type: Application
    Filed: June 18, 2007
    Publication date: December 18, 2008
    Inventors: Timothy Cox, Ahmad Khoshnevis