Patents by Inventor Ebrahim MolavianJazi

Ebrahim MolavianJazi 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: 20230016191
    Abstract: Apparatuses, methods, and systems are disclosed for power headroom report generation. One method includes aggregating multiple serving cells. The method includes determining that a power headroom report is triggered. The method includes determining that an uplink resource for a new transmission on a serving cell of the multiple serving cells is allocated at a first time after the power headroom report is triggered. The method includes determining a power headroom value for each serving cell of the multiple serving cells being activated based on information received prior to and including a predetermined time before the start of the uplink resource at the first time. The method includes generating a power headroom report medium access control control element including at least the power headroom value for each serving cell of the multiple serving cells being activated.
    Type: Application
    Filed: September 21, 2022
    Publication date: January 19, 2023
    Inventors: Joachim Loehr, Ebrahim MolavianJazi, Prateek Basu Mallick, Ravi Kuchibhotla
  • Patent number: 11558873
    Abstract: Methods and apparatuses for group scheduling for physical downlink control channel (PDCCH) overhead reduction. A method of operating a UE includes receiving first configuration information for reception of first PDCCHs. A PDCCH from the first PDCCHs provides a first downlink control information (DCI) format that includes a first number of information bits. The method further includes receiving second configuration information for a location of a second number of information bits, smaller than the first number of information bits, in the first DCI format; receiving at least one of the first PDCCHs; and determining, from the second number of information bits, values of one or more fields associated with reception of a first physical downlink shared channel (PDSCH) or with transmission of a first physical uplink shared channel (PUSCH).
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: January 17, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Qiongjie Lin, Aris Papasakellariou, Ebrahim MolavianJazi
  • Patent number: 11546816
    Abstract: A handover command message can be received. The handover command message can include at least one handover condition. The at least one handover condition can include an indication that handover can occur after at least one beam failure. A handover procedure can be performed based on the at least one handover condition.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: January 3, 2023
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Prateek Basu Mallick, Ravi Kuchibhotla, Hyejung Jung, Joachim Löhr, Ebrahim MolavianJazi, Vijay Nangia
  • Patent number: 11540227
    Abstract: Apparatuses, methods, and systems are disclosed for transmission power control. One method includes receiving a first configuration indicating a plurality of bandwidth parts on a first serving cell and configuration information corresponding to the plurality of bandwidth parts. The configuration information comprises an open-loop power control configuration, a closed loop power control configuration, or a combination thereof corresponding to each bandwidth part of the plurality of bandwidth parts. The method comprises receiving scheduling information for a first uplink transmission on a first bandwidth part of the plurality of bandwidth parts. The method comprises determining a first transmission power for the first uplink transmission based on the configuration information and the scheduling information. The method comprises performing the first uplink transmission with the first transmission power.
    Type: Grant
    Filed: March 20, 2021
    Date of Patent: December 27, 2022
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Ebrahim MolavianJazi, Hyejung Jung, Vijay Nangia
  • Publication number: 20220408458
    Abstract: Methods and apparatuses for scheduling via multiple physical downlink control channels (PDCCHs). A method for a user equipment (UE) includes receiving a first PDCCH that provides a first downlink control information (DCI) format and a second PDCCH that provides a second DCI format. The method further includes determining: first parameters for reception of a physical downlink shared channel (PDSCH), or for transmission of a physical uplink shared channel (PUSCH), based on values of fields of the first DCI format; and second parameters for reception of the PDSCH, or for transmission of the PUSCH, based on values of fields of the second DCI format. The second parameters are different than the first parameters. The method further includes receiving the PDSCH, or transmitting the PUSCH, based on the first parameters and the second parameters.
    Type: Application
    Filed: June 8, 2022
    Publication date: December 22, 2022
    Inventors: Ebrahim MolavianJazi, Aristides Papasakellariou
  • Publication number: 20220408464
    Abstract: Methods and apparatuses for down-link control information (DCI) for multi-cell scheduling. A method includes receiving first information for a first number of sets of serving cells, a first physical downlink control channel (PDCCH) providing a first downlink control information (DCI) format on a first cell, and a second PDCCH providing a second DCI format on a second cell; determining: parameters for reception or transmission of first physical downlink shared channels (PDSCHs) or physical uplink shared channel (PUSCHs), respectively, on a first set of serving cells based on the first DCI format, and parameters for reception or transmission of a second PDSCH or PUSCH, respectively, on the second cell based on the second DCI format. The method further includes receiving the first PDSCHs or transmitting the first PUSCHs on the first set of serving cells and receiving the second PDSCH or transmitting the second PUSCH on the second cell.
    Type: Application
    Filed: June 3, 2022
    Publication date: December 22, 2022
    Inventors: Ebrahim MolavianJazi, Aristides Papasakellariou
  • Publication number: 20220394734
    Abstract: Apparatuses and methods for cross-carrier scheduling across different discontinuous reception (DRX) groups. A method includes receiving first information for a first and second sets of values for a first set of DRX timers associated with first and second DRX cell groups, respectively; receiving second information, from a first cell, for scheduling on a second cell; and receiving a physical downlink control channel (PDCCH) on the first cell. The first and second DRX cell groups do not have a common cell. The first and second cells are from the first and second DRX cell groups, respectively. The method further includes determining a first DRX Active time for the first DRX cell group based on the first set of values and the PDCCH reception and determining a second DRX Active time for the second DRX cell group based on the second set of values and the PDCCH reception.
    Type: Application
    Filed: May 19, 2022
    Publication date: December 8, 2022
    Inventors: Ebrahim MolavianJazi, Qiongjie Lin, Aristides Papasakellariou
  • Patent number: 11522652
    Abstract: Apparatuses, methods, and systems are disclosed for transmitting device capability information. The method includes operating a device with multiple antenna port groups for communication between the device and a network. The method includes transmitting, by the device, device capability information to the network. The device capability information includes a number of antenna port groups of the multiple antenna port groups, a number of antenna ports for each of the antenna port groups, a maximum number of supported spatial layers for each of the antenna port groups, or some combination thereof.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: December 6, 2022
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Hyejung Jung, Vijay Nangia, Prateek Basu Mallick, Ebrahim MolavianJazi, Ravi Kuchibhotla, Joachim Loehr
  • Publication number: 20220385381
    Abstract: Methods and apparatuses for radio frequency exposure mitigation. A method for a user equipment (UE) to transmit a first channel includes receiving first information for a first downlink reference signal (DL RS) and a set of numbers of repetitions. The method further includes determining a first reference signal received power (RSRP) value for the first DL RS, a first spatial filter corresponding to the first DL RS, a first exposure value for the first spatial filter, and a first number of repetitions from the set of numbers of repetitions based on the first RSRP value and the first exposure value. The method further includes transmitting the first channel with the first number of repetitions using the first spatial filter.
    Type: Application
    Filed: May 11, 2022
    Publication date: December 1, 2022
    Inventors: Ebrahim MolavianJazi, Aristides Papasakellariou
  • Publication number: 20220377799
    Abstract: Methods and apparatuses for radio frequency exposure mitigation via beam selection for random access procedure. A method for performing a random access (RA) procedure includes receiving information for a set of downlink reference signals (DL RSs). The method further includes determining: a set of DL reference signal received powers (RSRPs) corresponding to the set of DL RSs, a set of spatial filters corresponding to the set of DL RSs, a set of exposure levels corresponding to the set of spatial filters, a first DL RS from the set of DL RSs based on the set of DL RSRPs and the set of exposure levels, and a first spatial filter corresponding to the first DL RS. The method further includes transmitting a physical random access channel (PRACH), a physical uplink shared channel (PUSCH), or a physical uplink control channel (PUCCH) using the first spatial filter.
    Type: Application
    Filed: April 26, 2022
    Publication date: November 24, 2022
    Inventors: Ebrahim MolavianJazi, Emad N. Farag, Aristides Papasakellariou
  • Publication number: 20220377676
    Abstract: Apparatuses, methods, and systems are disclosed for uplink power control. One method includes: receiving a message that configures a set of resources that each includes a downlink resource or an uplink sounding resource and is associated with an uplink transmission beam pattern; receiving scheduling information for an uplink transmission that is associated with a resource of the set of resources; determining an uplink transmission beam pattern associated with the resource; determining a configured maximum output power for the uplink transmission beam pattern that is based on an antenna array property associated with the uplink transmission beam pattern; determining a transmit power for the uplink transmission based on the configured maximum output power; and performing the uplink transmission using the uplink transmission beam pattern based on the transmit power.
    Type: Application
    Filed: August 8, 2022
    Publication date: November 24, 2022
    Inventors: Ebrahim MolavianJazi, Vijay Nangia, Hyejung Jung, Colin D. Frank, Robert T. Love, Ravi Kuchibhotla, Hossein Bagheri
  • Patent number: 11496967
    Abstract: Apparatuses, methods, and systems are disclosed for power headroom reporting for multiple uplink carriers. One apparatus includes a transceiver that receives a configuration of a plurality of UL carriers for a serving cell. The first apparatus includes a processor that determines that a PHR has been triggered, where the PHR for the serving cell is determined to be a virtual PHR. The processor determines a default power control parameter set for the serving cell and calculates a PHR for the serving cell. Here, calculating the PHR includes calculating a virtual PH based on the default power control parameter set. The processor transmits (via the transceiver) the calculated PHR for the serving cell.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: November 8, 2022
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Ebrahim MolavianJazi, Joachim Loehr, Hyejung Jung, Vijay Nangia, Prateek Basu Mallick
  • Patent number: 11497026
    Abstract: Base stations and user equipments (UEs) for random access and contention resolution. A method for operating a UE includes receiving configurations for a first control resource set (CORESET) that includes a first number of resource blocks (RBs) in a frequency domain and a first number of symbols in a time domain, a second CORESET that includes a second number of RBs in the frequency domain and a second number of symbols in the time domain, and a reference signal received power (RSRP) threshold. The method further includes determining a first RSRP value and receiving a first physical downlink control channel (PDCCH). The first PDCCH reception is in the first CORESET when the first RSRP value is larger than the RSRP threshold and the first PDCCH reception is in the second CORESET when the first RSRP value is smaller than the RSRP threshold.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: November 8, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ebrahim MolavianJazi, Aris Papasakellariou
  • Patent number: 11483777
    Abstract: Apparatuses, methods, and systems are disclosed for power headroom report generation. One method includes aggregating multiple serving cells. The method includes determining that a power headroom report is triggered. The method includes determining that an uplink resource for a new transmission on a serving cell of the multiple serving cells is allocated at a first time after the power headroom report is triggered. The method includes determining a power headroom value for each serving cell of the multiple serving cells being activated based on information received prior to and including a predetermined time before the start of the uplink resource at the first time. The method includes generating a power headroom report medium access control control element including at least the power headroom value for each serving cell of the multiple serving cells being activated.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: October 25, 2022
    Assignee: Lenovo (Singapore) PTE. LTD.
    Inventors: Joachim Loehr, Ebrahim MolavianJazi, Prateek Basu Mallick, Ravi Kuchibhotla
  • Publication number: 20220330238
    Abstract: Apparatuses, methods, and systems are disclosed for uplink transmission power allocation. One method includes receiving a configuration of two uplink carriers. The method includes determining whether a configuration parameter corresponding to at least one of a first uplink carrier and a second uplink carrier for a serving cell is configured. The method includes determining whether a total user equipment transmit power for uplink transmissions in a transmission occasion exceeds a maximum user equipment output power, wherein the uplink transmissions comprise a first uplink transmission on the first uplink carrier and a second uplink transmission. The method includes, in response to determining that the total user equipment transmit power for uplink transmissions in the transmission occasion exceeds the maximum user equipment output power, determining a first priority level for the first uplink transmission and a second priority level for the second uplink transmission.
    Type: Application
    Filed: June 20, 2022
    Publication date: October 13, 2022
    Inventors: Ebrahim MolavianJazi, Hyejung Jung, Vijay Nangia, Joachim Loehr, Ravi Kuchibhotla
  • Patent number: 11463147
    Abstract: A method and apparatus is provided for determining physical uplink channel power control parameter values for use after a beam failure recovery. A physical random access channel with a spatial domain transmission filter associated with a selected downlink reference signal from a set of downlink reference signals configured for a link recovery is transmitted. A determination is made as to whether the selected downlink reference signal is configured for at least one of a set of uplink spatial relation configurations as a reference signal for an uplink spatial relation setting for a physical uplink channel transmission. A power control parameter value for the physical uplink channel transmission is determined. The physical uplink channel is transmitted with the spatial domain transmission filter associated with the selected downlink reference signal and the determined physical uplink channel power control parameter value.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: October 4, 2022
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Hyejung Jung, Ebrahim MolavianJazi, Vijay Nangia
  • Publication number: 20220304026
    Abstract: Apparatuses and methods for scheduling enhancements for wireless communication systems. A method for receiving physical downlink control channels (PDCCHs) includes receiving first information for first search space sets for scheduling on a first cell from the first cell and second information for second search space sets for scheduling on the first cell from a second cell. The method includes determining a first number of PDCCH receptions over a first number of non-overlapping control channel elements (CCEs) on the first cell in a first slot based on the first search space sets and identifying that at least one of the first number of PDCCH receptions exceeds a predetermined number of PDCCH receptions and the first number of non-overlapping CCEs exceeds a predetermined number of non-overlapping CCEs. The method further includes canceling PDCCH receptions corresponding only to third search space sets from the first search space sets.
    Type: Application
    Filed: March 18, 2022
    Publication date: September 22, 2022
    Inventors: Ebrahim MolavianJazi, Aristides Papasakellariou
  • Patent number: 11452047
    Abstract: Configuration information including a cell identifier can be transmitted on a first cell. A pathloss reference signal associated with a second cell can be transmitted. An uplink transmission can be received from a user equipment on the first cell. A transmit power of the uplink transmission can be determined by the user equipment based on the pathloss reference signal. The pathloss reference signal can be based on the configuration information including the cell identifier.
    Type: Grant
    Filed: December 20, 2020
    Date of Patent: September 20, 2022
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Ebrahim MolavianJazi, Hyejung Jung, Vijay Nangia
  • Publication number: 20220295415
    Abstract: Apparatuses, methods, and systems are disclosed for uplink power control. One method includes receiving uplink power control parameters. The method includes determining a first transmit power for the first uplink transmission based on a corresponding first set of uplink power control parameters. The method includes determining a second transmit power for the second uplink transmission based on a corresponding second set of uplink power control parameters. The method includes performing the first uplink transmission using a first uplink transmission beam pattern or a first spatial domain transmission filter based on the first transmit power. The method includes performing the second uplink transmission using a second uplink transmission beam pattern or a second spatial domain transmission filter based on the second transmit power.
    Type: Application
    Filed: May 27, 2022
    Publication date: September 15, 2022
    Inventors: Ebrahim MolavianJazi, Vijay Nangia, Hyejung Jung, Hossein Bagheri, Joachim Loehr
  • Patent number: 11419067
    Abstract: Apparatuses, methods, and systems are disclosed for uplink power control. One method includes: receiving a message that configures a set of resources that each includes a downlink resource or an uplink sounding resource and is associated with an uplink transmission beam pattern; receiving scheduling information for an uplink transmission that is associated with a resource of the set of resources; determining an uplink transmission beam pattern associated with the resource; determining a configured maximum output power for the uplink transmission beam pattern that is based on an antenna array property associated with the uplink transmission beam pattern; determining a transmit power for the uplink transmission based on the configured maximum output power; and performing the uplink transmission using the uplink transmission beam pattern based on the transmit power.
    Type: Grant
    Filed: March 20, 2021
    Date of Patent: August 16, 2022
    Assignee: Lenovo (Singapore) PTE. LTD.
    Inventors: Ebrahim MolavianJazi, Vijay Nangia, Hyejung Jung, Colin D. Frank, Robert T. Love, Ravi Kuchibhotla, Hossein Bagheri