Patents by Inventor Alexei Y. Gorokhov

Alexei Y. Gorokhov 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: 10027372
    Abstract: Techniques for mitigating interference in a wireless communication system are described. In an aspect, pertinent transmission parameters for a served UE may be sent to at least one interfered UE to support interference mitigation. In one design, information for at least one transmission parameter for a data transmission sent by a first cell to a first UE may be transmitted to at least one UE served by a second cell to enable the at least one UE to perform interference mitigation for the data transmission sent by the first cell to the first UE. The information may be transmitted by either the first cell or the second cell. In another aspect, a cell may send transmission parameters for a UE via a pilot. In yet another aspect, scrambling may be performed by a cell at symbol level to enable an interfered UE to distinguish between modulation symbols of desired and interfering transmissions.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: July 17, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Alexei Y. Gorokhov, Avneesh Agrawal
  • Patent number: 9974065
    Abstract: Systems and methodologies are described that facilitate requesting blanking over control resources from one or more interfering eNBs or devices. An eNB, such as a macrocell, femtocell or picocell eNB, can transmit a downlink control blanking message to a UE directing the UE to perform blanking (e.g., for uplink control resources) or request the blanking from the interfering eNBs or devices (e.g., for downlink control resources). The downlink control blanking message can specify the desired control resources and/or information to determine the control resources. Thus, dynamic control blanking is provided such that blanking is requested to mitigate interference over control resources for the small scale eNB. The small scale eNB can subsequently communicate control data to the UE over the control resources; the control data can include a resource blanking message that similarly directs the UE to request blanking of general data resource from the interfering eNBs or devices.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: May 15, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Alexei Y. Gorokhov, Ravi Palanki, Aamod D. Khandekar
  • Patent number: 9930657
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines a first starting index for transmitting first control information in a first search space, determines a second starting index for transmitting second control information in a second search space, and transmits the second control information in the second search space at the second starting index when the first starting index and the second starting index are not the same value. The apparatus further transmits to a user equipment (UE) control information in a first search space, receives information from the UE corresponding to the transmitted control information, and decodes the received information based on the UE parsing the control information according to the first search space and based on the UE incorrectly parsing the control information according to a second search space.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: March 27, 2018
    Inventors: Peter Gaal, Mariam Motamed, Wanshi Chen, Alexei Y. Gorokhov, Dominique F. Bressanelli, Levent Aydin
  • Patent number: 9923597
    Abstract: Techniques for mitigating interference in a wireless communication system are described. In an aspect, pertinent transmission parameters for a served UE may be sent to at least one interfered UE to support interference mitigation. In one design, information for at least one transmission parameter for a data transmission sent by a first cell to a first UE may be transmitted to at least one UE served by a second cell to enable the at least one UE to perform interference mitigation for the data transmission sent by the first cell to the first UE. The information may be transmitted by either the first cell or the second cell. In another aspect, a cell may send transmission parameters for a UE via a pilot. In yet another aspect, scrambling may be performed by a cell at symbol level to enable an interfered UE to distinguish between modulation symbols of desired and interfering transmissions.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: March 20, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Alexei Y. Gorokhov, Avneesh Agrawal
  • Patent number: 9854590
    Abstract: Techniques for communicating on multiple carriers in a wireless communication network are described. In an aspect, different transmit power levels may be used for different carriers to mitigate interference. A first base station may be assigned one or more carriers among multiple carriers available for communication. A second base station may be assigned one or more carriers not assigned to the first base station. Each base station may communicate on each assigned carrier at a first (e.g., full) transmit power level and may communicate on each unassigned carrier at a second (e.g., lower) transmit power level lower. The first and second base stations may belong in different power classes or support different association types. In another aspect, control information may be sent on a designated carrier to support communication on multiple carriers. In yet another aspect, a base station may broadcast bar information indicating the status of carriers.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: December 26, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Palanki, Alexei Y. Gorokhov
  • Patent number: 9819455
    Abstract: Systems and methodologies are described that facilitate identifying resources upon which an acknowledgment can be sent or received in a wireless communication environment that leverages coordinated multi-point (CoMP). The resources can be identified based upon a criterion that can be identifiable to a non-anchor cell base station (as well as an anchor cell base station, a mobile device, etc.). The criterion can be an identifier corresponding to a mobile device, where the identifier maps to a predetermined set of resources. Examples of the identifier can include a media access control identifier (MACID), a cell radio network temporary identifier (C-RNTI), a short C-RNTI, etc. Further, the criterion can be physical resources corresponding to a transmission, where the acknowledgment is responsive to the transmission. Moreover, the acknowledgment can be sent or received in connection with a cooperation technique (e.g.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: November 14, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Palanki, Alexei Y. Gorokhov
  • Publication number: 20170163433
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be a UE that acquires information regarding an interfering non-serving cell and uses the information to improve decoding of serving cell signals. The method includes receiving, from a serving evolved Node B (eNB), information that includes one or more transmission characteristics of at least one non-serving cell and performing at least one of interference cancellation, demodulation, or provides an improved channel quality indicator (CQI) based on the received information.
    Type: Application
    Filed: February 22, 2017
    Publication date: June 8, 2017
    Inventors: Tao LUO, Yongbin WEI, Peter GAAL, Hao XU, Taesang YOO, Siddhartha MALLIK, Makesh Pravin JOHN WILSON, Naga BHUSHAN, Durga Prasad MALLADI, Tingfang JI, Gavin Bernard HORN, Alexei Y. Gorokhov, Avneesh Agrawal
  • Patent number: 9635659
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines a first decoding candidate in a first search space and a second decoding candidate in a second search space, where the first decoding candidate and the second decoding candidate have a same size but different definitions of information fields, identifies a difference in the information fields, and determines one of the first decoding candidate and the second decoding candidate as a valid candidate based on the identified difference. The apparatus further generates first control information for transmitting in a first search space, codes the first control information, wherein the code applied to the first control information is specific to the first search space and different from code applied to second control information in a second search space, and transmits the coded first control information in the first search space.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: April 25, 2017
    Assignee: QUALCOMM INCORPORATED
    Inventors: Peter Gaal, Mariam Motamed, Wanshi Chen, Alexei Y. Gorokhov, Dominique F. Bressanelli, Levent Aydin
  • Patent number: 9537613
    Abstract: Systems and methodologies are described that facilitate identifying resources upon which an acknowledgment can be sent or received in a wireless communication environment that leverages coordinated multi-point (CoMP). The resources can be identified based upon a criterion that can be identifiable to a non-anchor cell base station (as well as an anchor cell base station, a mobile device, etc.). The criterion can be an identifier corresponding to a mobile device, where the identifier maps to a predetermined set of resources. Examples of the identifier can include a media access control identifier (MACID), a cell radio network temporary identifier (C-RNTI), a short C-RNTI, etc. Further, the criterion can be physical resources corresponding to a transmission, where the acknowledgment is responsive to the transmission. Moreover, the acknowledgment can be sent or received in connection with a cooperation technique (e.g.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: January 3, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Palanki, Alexei Y. Gorokhov
  • Patent number: 9485661
    Abstract: Systems and methodologies are described herein that facilitate the generation and use of separable, hierarchical channel state feedback in a wireless communication system. As described herein, in the event that multiple network nodes cooperate to conduct downlink transmissions to a network user, channel state feedback as reported by the network user can be separated into intra-node feedback relating to per-node channel conditions and inter-node feedback relating to relative phase and/or amplitude between channels corresponding to respective nodes. Further, a network user can select to report intra-node feedback and/or inter-node feedback based on network instructions, a cooperation strategy to be utilized by respective network nodes, or the like. As additionally described herein, respective codebooks on which inter-node and intra-node channel feedback is based can be configured to convey information relating to a partial channel description and/or to vary based on resource units (e.g.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: November 1, 2016
    Assignee: QUALCOMM Incorporated
    Inventor: Alexei Y. Gorokhov
  • Patent number: 9485068
    Abstract: Techniques for mitigating pilot pollution in a wireless network are described. In an aspect, pilot pollution may be mitigated by reducing density and/or transmit power of common pilots whenever possible. A cell may send a common pilot at a first density and a first transmit power level during a first time period and may send the common pilot at a second density and a second transmit power level during a second time period. The second density may be lower than the first density and/or the second transmit power level may be lower than the first transmit power level. Lower density may be achieved by sending the common pilot less frequently, on fewer subcarriers, and/or from fewer antennas. The cell may determine whether to reduce the density and/or transmit power of the common pilot based on network loading, SINRs of terminals, etc. In another aspect, pilot pollution may be mitigated by performing pilot cancellation at a terminal.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: November 1, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Tingfang Ji, Avneesh Agrawal, Alexei Y. Gorokhov
  • Publication number: 20160270017
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which signals are received from a first base station and a second base station, and a measurement is made of synchronization parameters between the first and second base stations at a user equipment. A signal is transmitted from the user equipment to at least one of the first or second base stations with information about the synchronization parameters. The synchronization parameters generally inform the first and/or second base stations of an adjustment to make to subsequent signals to align reception of the subsequent signals in at least one of time or frequency domains. The user equipment receives a third signal from the first base station and a fourth signal from the second base station, the third and fourth signals being substantially aligned in at least one of the time or frequency domains.
    Type: Application
    Filed: May 25, 2016
    Publication date: September 15, 2016
    Inventors: Ravi Palanki, Alexei Y. Gorokhov
  • Patent number: 9444587
    Abstract: Techniques for relaying transmissions in a wireless communication network are described. In one design, a relay may receive at least one assignment for a packet, which may be sent to the relay or intercepted by the relay. The relay may receive at least one transmission of a packet sent from a transmitter to a receiver. The relay may process the at least one transmission to decode the packet and may generate at least one additional transmission of the packet after correctly decoding the packet. The relay may send the at least one additional transmission of the packet to the receiver. The transmission(s) and the additional transmission(s) may be HARQ transmissions with different redundancy information for the packet. The transmitter may send transmissions until an acknowledgement (ACK) is received from the receiver or the relay. The relay may send additional transmissions until an ACK is received from the receiver.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: September 13, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Avneesh Agrawal, Alexei Y. Gorokhov
  • Patent number: 9426670
    Abstract: Systems and methodologies are described herein that facilitate interference measurement and reporting in a network multiple-in-multiple-out (N-MIMO) communication system. As described herein, a network device can measure and report interference corresponding to network nodes outside a designated set of nodes that can cooperatively serve the device. Respective interference reports can additionally identify dominant interfering nodes, correlation between transmit antennas of respective nodes, or the like. Subsequently, respective interference reports can be combined with per-node channel information to manage coordination and scheduling across respective network nodes. As further described herein, interference from a network node can be measured by observing reference and/or synchronization signals from the network node. To aid such observation, respective non-interfering network nodes can define null pilot intervals in which transmission is silenced or otherwise reduced.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: August 23, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Palanki, Alexei Y. Gorokhov, Naga Bhushan
  • Publication number: 20160198444
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines a first starting index for transmitting first control information in a first search space, determines a second starting index for transmitting second control information in a second search space, and transmits the second control information in the second search space at the second starting index when the first starting index and the second starting index are not the same value. The apparatus further transmits to a user equipment (UE) control information in a first search space, receives information from the UE corresponding to the transmitted control information, and decodes the received information based on the UE parsing the control information according to the first search space and based on the UE incorrectly parsing the control information according to a second search space.
    Type: Application
    Filed: March 16, 2016
    Publication date: July 7, 2016
    Inventors: Peter GAAL, Mariam MOTAMED, Wanshi CHEN, Alexei Y. GOROKHOV, Dominique F. BRESSANELLI, Levent AYDIN
  • Publication number: 20160119022
    Abstract: Techniques for mitigating interference in a wireless communication system are described. In an aspect, pertinent transmission parameters for a served UE may be sent to at least one interfered UE to support interference mitigation. In one design, information for at least one transmission parameter for a data transmission sent by a first cell to a first UE may be transmitted to at least one UE served by a second cell to enable the at least one UE to perform interference mitigation for the data transmission sent by the first cell to the first UE. The information may be transmitted by either the first cell or the second cell. In another aspect, a cell may send transmission parameters for a UE via a pilot. In yet another aspect, scrambling may be performed by a cell at symbol level to enable an interfered UE to distinguish between modulation symbols of desired and interfering transmissions.
    Type: Application
    Filed: January 8, 2016
    Publication date: April 28, 2016
    Inventors: Alexei Y. Gorokhov, Avneesh Agrawal
  • Patent number: 9320032
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines a first starting index for transmitting first control information in a first search space, determines a second starting index for transmitting second control information in a second search space, and transmits the second control information in the second search space at the second starting index when the first starting index and the second starting index are not the same value. The apparatus further transmits to a user equipment (UE) control information in a first search space, receives information from the UE corresponding to the transmitted control information, and decodes the received information based on the UE parsing the control information according to the first search space and based on the UE incorrectly parsing the control information according to a second search space.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: April 19, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Peter Gaal, Mariam Motamed, Wanshi Chen, Alexei Y. Gorokhov, Dominique F. Bressanelli, Levent Aydin
  • Patent number: 9265048
    Abstract: Systems and methodologies are described that facilitate indicating a dominant interferer to a target serving base station in a wireless communication environment. A mobile device can detect presence or absence of a dominant interferer. Further, an access probe that includes information related to the presence or absence of the dominant interferer can be generated. For example, the information can be included in a payload of the access probe as an explicit flag, an explicit indication of an interference level, a Channel Quality Indicator (CQI) value (e.g., reserved versus non-reserved, . . . ), etc. Moreover, the access probe can be transmitted to the target serving base station to initiate an access procedure. The target serving base station can select a time-frequency resource to be utilized for a responsive downlink transmission (e.g. access grant signal, subsequent access related message, . . . ) as a function of the information included in the access probe.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: February 16, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Ashwin Sampath, Aamod D. Khandekar, Alexei Y. Gorokhov, Mohammad J. Borran, Naga Bhushan, Ravi Palanki
  • Patent number: 9264097
    Abstract: Techniques for mitigating interference in a wireless communication system are described. In an aspect, pertinent transmission parameters for a served UE may be sent to at least one interfered UE to support interference mitigation. In one design, information for at least one transmission parameter for a data transmission sent by a first cell to a first UE may be transmitted to at least one UE served by a second cell to enable the at least one UE to perform interference mitigation for the data transmission sent by the first cell to the first UE. The information may be transmitted by either the first cell or the second cell. In another aspect, a cell may send transmission parameters for a UE via a pilot. In yet another aspect, scrambling may be performed by a cell at symbol level to enable an interfered UE to distinguish between modulation symbols of desired and interfering transmissions.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: February 16, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Alexei Y. Gorokhov, Avneesh Agrawal
  • Patent number: 9265049
    Abstract: Techniques for supporting data transmission on the uplink in a wireless network are described. In an aspect, a user equipment (UE) may send a data transmission to a serving base station and may send uplink control information (UCI) to a non-serving base station. The UCI may include pertinent information to allow the non-serving base station to process the data transmission from the UE. In one design, the UCI may allow the non-serving base station to estimate the interference due to the data transmission from the UE and to cancel the interference at the non-serving base station. The interference cancellation may improve the received signal quality at the non-serving base station. After the interference cancellation, the non-serving base station may process a data transmission from another UE served by the base station.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: February 16, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Palanki, Alexei Y. Gorokhov, Naga Bhushan