Patents by Inventor Afshin Haghighat

Afshin Haghighat 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: 20220255710
    Abstract: A wireless transmit/receive unit (WTRU) may receive a PDCCH transmission comprising a CCE that is mapped to one or more REGs based on a CCE-to-REG mapping. The WTRU may receive the CCE-to-REG mapping that indicates a REG bundle corresponding to the CCE and use the CCE-to-REG mapping to identify the REGs for the WTRU. Depending on whether the CCE-to-REG mapping is interleaving or noninterleaving, the CCE-to-REG mapping may be based on different parameters. If the CCE-to-REG mapping is interleaving, the CCE-to-REG mapping may be based on an index associated with the CCE and a number of REGs in the REG bundle. If the CCE-to-REG mapping is noninterleaving, the CCE-to-REG mapping may be based on the index of the CCE.
    Type: Application
    Filed: April 22, 2022
    Publication date: August 11, 2022
    Applicant: IDAC Holdings, Inc.
    Inventors: Mahmoud Taherzadeh Boroujeni, Moon-il Lee, Afshin Haghighat, Shahrokh Nayeb Nazar, Oghenekome Oteri
  • Patent number: 11381357
    Abstract: Methods, systems and apparatus are provided for hybrid automatic repeat request (HARQ) processes. A wireless transmit/receive unit (WTRU) may receive, in a first subframe, downlink control information (DCI) including a grant for a physical downlink shared control channel (PDSCH) and an indication of physical uplink control channel (PUCCH) resources. Further, the WTRU may receive, in the first subframe, data on the PDSCH based on the grant. Also, the WTRU may generate first acknowledgement (ACK)/negative ACK (NACK) information based on the data received on the PDSCH. Accordingly, the WTRU may transmit, in the first subframe, the first ACK/NACK information in a PUCCH transmission. In an example, the first ACK/NACK information may be transmitted in a time slot in the first subframe different from a time slot in the first subframe in which the DCI is received. Also, transmitting the PUCCH transmission may have a duration of one or two symbols.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: July 5, 2022
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Janet A. Stern-Berkowitz, Afshin Haghighat, Moon-il Lee
  • Patent number: 11374644
    Abstract: A WTRU may include a memory and a processor. The processor may be configured to receive beam grouping information from a gNB or transmission and reception point (TRP). The beam grouping information may indicate a group of beams that the WTRU may report using group-based reporting. The group-based reporting may be a reduced level of reporting compared to a beam-based reporting. The group-based report may include measurement information for a representative beam. The representative beam may be one of the beams in the group or represents an average of the beams in the group. Alternatively, the representative beam may be a beam that has a maximum measurement value compared to other beams in the group. The group-based report may include a reference signal received power (RSRP) for the representative beam and a differential RSRP for each additional beam in the beam group.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: June 28, 2022
    Assignee: IDAC HOLDINGS, INC.
    Inventors: Kyle Jung-Lin Pan, Fengjun Xi, Afshin Haghighat, Oghenekome Oteri, Chunxuan Ye, Frank La Sita, Robert L. Olesen, Moon-il Lee
  • Publication number: 20220200755
    Abstract: A system, method, and device for ensuring a number of Phase Tracking Reference Signal(s) (PT-RSs) are the same for multiple slots. A wireless transmit/receive unit (WTRU) may receive control information including a number of scheduled resource blocks (RBs) then determine a PT-RS density based on the number of scheduled RBs. The WTRU may determine a RB offset value for the WTRU based on a WTRU-ID modulo the maximum RB offset value, where the maximum value for the RB offset value may be based on at least one of the number of the scheduled RBs and the PT-RS density. The WTRU may then transmit or receive a signal with PT-RS based on the RB offset value.
    Type: Application
    Filed: March 14, 2022
    Publication date: June 23, 2022
    Applicant: IDAC Holdings, Inc.
    Inventors: Moon-il Lee, Alphan Sahin, Erdem Bala, Afshin Haghighat, Frank LaSita, Janet A. Stern-Berkowitz
  • Publication number: 20220190906
    Abstract: Methods and apparatus for transmitting a hybrid automatic repeat request acknowledgment (HARQ-ACK) are disclosed. A wireless transmit/receive unit (WTRU) may transmit a random access channel (RACH) message-A to a gNB. The WTRU may receive a RACH message-B from the gNB in response to the message-A. The message-B may comprise downlink control information (DCI). The WTRU may decode a physical downlink shared channel (PDSCH) based on the DCI. The WTRU may determine that contention resolution is successful. The WTRU may determine a resource for a physical uplink control channel (PUCCH). The WTRU may transmit a HARQ-ACK over the determined PUCCH resource. The WTRU may determine the resource for the PUCCH based on a PUCCH resource index. The PUCCH resource index may be based on a random access preamble index (RAPID) and a PUCCH resource indicator (PRI).
    Type: Application
    Filed: February 13, 2020
    Publication date: June 16, 2022
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Afshin Haghighat, Shahrokh Nayeb Nazar, Loic Cannone-Velasquez, Faris Alfarhan, J. Patrick TOOHER
  • Publication number: 20220150875
    Abstract: A wireless transmit/receive unit (WTRU) may receive a first signal including a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). The PSS and SSS may be received in a resource block of a cell and the resource block may have a first numerology. Further, the first numerology may have a first subcarrier spacing, while other resources of the cell at a same time as the resource block may have a second numerology with a different subcarrier spacing than the first numerology. In addition, the WTRU may determine synchronization based on the PSS and SSS. Also, the WTRU may receive a second signal in the cell, and the second signal may have the second numerology. Moreover, the WTRU may transmit user data. In a further example, the WTRU may search a frequency raster for the PSS and the SSS.
    Type: Application
    Filed: January 21, 2022
    Publication date: May 12, 2022
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Erdem Bala, Afshin Haghighat, Mihaela C. Beluri, Rui Yang, Ananth Kini, Janet A. Stern-Berkowitz, Alphan Sahin
  • Publication number: 20220150887
    Abstract: A method performed by a wireless transmit/receive unit (WTRU) may include receiving configuration information for reporting a power headroom (PH) associated with each of a plurality of cells, wherein a first cell uses first time intervals each having a first length and a second cell uses second time intervals each having a second length. The method may include transmitting a first uplink transmission using a first carrier frequency associated with the first cell and transmitting, in one of the second time intervals that is fully overlapped by the one of the first time intervals, based on the received configuration information, a report including information indicating a first PH corresponding to the one of the first time intervals and a second PH corresponding to the earliest one in time of the second time intervals that is fully overlapped by the one of the first time intervals.
    Type: Application
    Filed: January 26, 2022
    Publication date: May 12, 2022
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Bala Erdem, Afshin Haghighat, Mihaela C. Beluri
  • Publication number: 20220141805
    Abstract: A WTRU may receive a plurality of monitoring configurations. The plurality of monitoring configurations may be associated with a plurality of sub-bands. The WTRU may apply a monitoring configuration based on the location of a slot inside or outside of a COT. For example, the WTRU may apply (e.g., use) a first monitoring configuration outside a COT. The WTRU may apply a second monitoring configuration in a first slot of a COT. The WTRU may apply a third monitoring configuration to the slots of a COT subsequent to the first slot of the COT. The WTRU may switch back to the first monitoring configuration on a condition that the COT ends.
    Type: Application
    Filed: February 10, 2020
    Publication date: May 5, 2022
    Inventors: J. Patrick Tooher, Shahrokh Nayeb Nazar, Aata EI Hamss, Afshin Haghighat, Oghenekome Oteri
  • Publication number: 20220132341
    Abstract: Methods and apparatus for burst transmission are provided. A wireless transmit/receive unit (WTRU) is configured to receive configuration information for a periodic search space (P-SS) and a semi-persistent search space (SP-SS). The configuration information may include a monitoring periodicity of the P-SS and a monitoring periodicity of the SP-SS. The P-SS may be associated with the SP-SS. The WTRU is configured to monitor the P-SS with the periodicity of the P-SS. The WTRU is configured to receive a first message in a first physical downlink control channel (PDCCH) in a slot of the P-SS. The first message may indicate an activation of the associated SP-SS. The WTRU is configured to monitor the SP-SS using the periodicity of the SP-SS. The WTRU is configured to receive a second message in a second PDCCH in a slot of the SP-SS.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 28, 2022
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Moon-il Lee, Erdem Bala, Afshin Haghighat, Janet A. Stern-Berkowitz
  • Publication number: 20220131648
    Abstract: Method and apparatuses for communication over an unlicensed band are provided herein. A method may comprise transmitting transport blocks in each slot of a plurality of slots and determining a Hybrid Automatic Repeat Request (HARQ) status for each of the transmitted transport blocks. The method may further comprise determining a weighting coefficient for each of the determined HARQ statuses and calculating, based on the determined HARQ statuses and weighting coefficients, a weighted average of the HARQ statuses for the transmitted transport blocks. The method may further comprise adjusting a Listen-Before-Talk (LBT) contention window size based on the calculated weighted average of the HARQ statuses.
    Type: Application
    Filed: February 13, 2020
    Publication date: April 28, 2022
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Aata El Hamss, J. Patrick Tooher, Shahrokh Nayeb Nazar, Afshin Haghighat
  • Patent number: 11316649
    Abstract: A wireless transmit/receive unit (WTRU) may receive a PDCCH transmission comprising a CCE that is mapped to one or more REGs based on a CCE-to-REG mapping. The WTRU may receive the CCE-to-REG mapping that indicates a REG bundle corresponding to the CCE and use the CCE-to-REG mapping to identify the REGs for the SWTRU. Depending on whether the CCE-to-REG mapping is interleaving or noninterleaving, the CCE-to-REG mapping may be based on different parameters. If the CCE-to-REG mapping is interleaving, the CCE-to-REG mapping may be based on an index associated with the CCE and a number of REGs in the REG bundle. If the CCE-to-REG mapping is noninterleaving, the CCE-to-REG mapping may be based on the index of the CCE.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: April 26, 2022
    Assignee: IDAC Holdings, Inc.
    Inventors: Mahmoud Taherzadeh Boroujeni, Moon-il Lee, Afshin Haghighat, Shahrokh Nayeb Nazar, Oghenekome Oteri
  • Patent number: 11303493
    Abstract: Methods and apparatuses are described herein for transmit diversity in an uplink control channel. A wireless transmit/receive unit (WTRU) may perform a Discrete Fourier Transform (DFT) precoding operation on a data symbol sequence segment to generate a DFT precoded segment. The WTRU may then perform a Space Frequency Block Coding (SFBC) operation on the DFT precoded segment to generate a SFBC processed segment. The data symbols of the DFT precoded segment may be reordered in the SFBC processed segment. The WTRU may map the DFT precoded segment to a first set of contiguous subcarriers and the SFBC processed segment to a second set of contiguous subcarriers. The WTRU may then transmit a first DFT spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) signal on the first set of contiguous subcarriers via a first antenna port and a second DFT-s-OFDM signal on the second set of contiguous subcarriers via a second antenna port.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: April 12, 2022
    Assignee: IDAC HOLDINGS, INC.
    Inventors: Erdem Bala, Moon-il Lee, Shahrokh Nayeb Nazar, Afshin Haghighat, Alphan Sahin, Rui Yang, Frank La Sita
  • Publication number: 20220109474
    Abstract: A WTRU may be configured to transmit to a network (e.g., in a first indication) a full power uplink transmission capability associated with the WTRU, e.g., Cap3. The WTRU may receive (e.g., in a second indication) an indication of whether the WTRU is allowed to operate with full power transmission. The WTRU may determine (e.g., from a set of TPM Is), a subset of TPM Is based on, for example, the WTRU's full power uplink transmission capability (e.g., where the subset of TPM Is includes a first TPM I). The set of TPM Is may comprise one or more subsets of TPM Is. The WTRU may transmit (e.g., in a third indication) an indication of the determined subset of TPM Is. The WTRU may receive (e.g., in a fourth indication) an indication of the first TPM I in the subset of TPM Is. The WTRU may transmit to the network uplink data precoded with the first TPMI.
    Type: Application
    Filed: February 11, 2020
    Publication date: April 7, 2022
    Applicant: IDAC Holdings, Inc.
    Inventors: Afshin Haghighat, Virgil Comsa, Janet A. Stern-Berkowitz
  • Patent number: 11283567
    Abstract: A system, method, and device for ensuring a number of Phase Tracking Reference Signal(s) (PT-RSs) are the same for multiple slots. A wireless transmit/receive unit (WTRU) may receive control information including a number of scheduled resource blocks (RBs) then determine a PT-RS density based on the number of scheduled RBs. The WTRU may determine a RB offset value for the WTRU based on a WTRU-ID modulo the maximum RB offset value, where the maximum value for the RB offset value may be based on at least one of the number of the scheduled RBs and the PT-RS density. The WTRU may then transmit or receive a signal with PT-RS based on the RB offset value.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: March 22, 2022
    Assignee: IDAC Holdings, Inc.
    Inventors: Moon-il Lee, Alphan Sahin, Erdem Bala, Afshin Haghighat, Frank La Sita, Janet A. Stern-Berkowitz
  • Publication number: 20220086915
    Abstract: Methods and apparatus for beam refinement are disclosed. A wireless transmit/receive unit (WTRU) may be configured to receive configuration information. The configuration information may indicate an association between preambles, synchronization signal blocks (SSBs), reference signal (RS) sets, and physical uplink shared channel (PUSCH) resources. The WTRU may be configured to receive a plurality of SSBs, determine a measurement of the received SSBs, and select an SSB based on the determined measurement. The WTRU may be configured to select and transmit a preamble using a first beam. The WTRU may be configured to receive a plurality of sets of RSs based on the transmitted preamble and determine a measurement of the received sets of RSs. The WTRU may be configured to select a RS based on the determined measurement of the received sets of RSs. The WTRU may be configured to transmit uplink data on a PUSCH using a second beam.
    Type: Application
    Filed: February 11, 2020
    Publication date: March 17, 2022
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Loic Canonne-Velasquez, Afshin Haghighat, Shahrokh Nayeb Nazar, J. Patrick Tooher
  • Publication number: 20220077978
    Abstract: Described herein are methods and apparatuses for enhancing transmission reliability. A method may comprise determining to determining to transmit a plurality of repetitions of a data payload. Each repetition of the data payload may comprise a set of coded bit sequences. The method may further comprise determining a constellation for each of the repetitions of the data payload, and mapping, for each repetition of the data payload, the sets of coded bit sequences to respective sets of modulation symbols based on the constellation. Each of the sets of modulation symbols may be different. The method may further comprise allocating time and frequency resources for transmitting the sets of modulation symbols and transmitting the sets of modulation symbols on a downlink channel using the allocated time and frequency resources.
    Type: Application
    Filed: January 8, 2020
    Publication date: March 10, 2022
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Afshin Haghighat, Prasanna Herath Mudiyanselage, Moon-il Lee, Loic Canonne-Velasquez
  • Patent number: 11272483
    Abstract: A wireless transmit/receive unit (WTRU) may determine physical uplink control channel (PUCCH) resources for a PUCCH based on a number of hybrid automatic repeat request (HARQ) bits and based on a parameter. The WTRU may determine a format of the PUCCH based on symbols for uplink control information (UCI) and based on the number of HARQ bits.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 8, 2022
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Erdem Bala, Afshin Haghighat, Mihaela C. Beluri
  • Patent number: 11265824
    Abstract: Systems, methods, and instrumentalities are disclosed for non-orthogonal multiple access (NOMA), frequency hopping, and power control. NOMA may be applied to asynchronous and/or grant-free transmissions. Transmissions from multiple WTRUs may be performed using the same resources, and may comprise information for correctly identifying and decoding the transmissions. The transmissions may comprise a built-in deterministic sequence to support timing acquisition at a receiver. The transmissions may be distinguished based on respective transmit power used for the transmissions. Such transmit power may be dynamically controlled by applying a randomly selected power offset. The power control may be performed autonomously by a WTRU.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: March 1, 2022
    Assignee: IDAC Holdings, Inc.
    Inventors: Erdem Bala, Janet A. Stern-Berkowitz, Afshin Haghighat, Moon-il Lee, Mihaela C. Beluri, Ananth Kini, Rui Yang, Alphan Sahin
  • Patent number: 11223394
    Abstract: Systems, methods, and instrumentalities are disclosed for antenna virtualization, e.g., in at least a two-dimensional antenna array. NE physical antenna elements may be virtualized to Np logical antenna ports. A virtualization may be WTRU-specific, which may optimize MIMO performance. A simplified MIMO scheme may be used with A reduction in feedback, reference signal, and/or control signaling overhead. Antenna virtualization schemes may utilize channel characteristics. Antenna virtualization may be defined, for example, based on antenna port to antenna element mapping, based on a measurement reference signal, based on a codebook or a codebook subset or based on an antenna virtualization matrix. One or more antenna virtualization schemes may be configured in a cell. Antenna virtualization schemes may be configured in a WTRU-specific manner, perhaps for example based on a WTRU channel characteristic(s). A WTRU may report one or more useful (e.g., optimized) antenna virtualization schemes, e.g.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: January 11, 2022
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Moon-il Lee, Afshin Haghighat, Meilong Jiang, Janet A. Stern-Berkowitz
  • Publication number: 20220007304
    Abstract: Systems, methods, and instrumentalities are provided that are associated with multi-layer transmissions such as multi-layer NOMA transmissions. A per-layer perturbation pattern may be applied to the multiple layers to create differences among the transmission power levels of the layers. MAS and NOMA resource indications may be provided, e.g., through TCI state. Dynamic MAS and NOMA resource indications may be provided. Uplink CSI-RS techniques may be provided, e.g., for interference measurement.
    Type: Application
    Filed: November 12, 2019
    Publication date: January 6, 2022
    Applicant: IDAC Holdings, Inc.
    Inventors: Afshin Haghighat, Loic Canonne-Velasquez, Moon-il Lee, Shahrokh Nayeb Nazar, Prasanna Herath Mudiyanselage