Patents by Inventor Alphan Sahin

Alphan Sahin 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: 12218763
    Abstract: Methods and apparatuses are described herein for HARQ signaling and communications in wireless networks. For example, a method implemented in a STA comprises receiving a first MU transmission including a first set of HARQ bits, a first set of user data for STAs including the STA, a preamble including information indicating that the MU transmission includes the first set of HARQ bits, and a first set of HARQ Process IDs associated with the first set of HARQ bits; determining a subset of HARQ bits of the first set of HARQ bits; transmitting a response message indicating a reception status of the subset of HARQ bits; and receiving a second MU transmission including a second set of HARQ bits, a second set of user data for the plurality of STAs, and a second set of HARQ Process IDs associated with the second set of HARQ bits.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: February 4, 2025
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Oghenekome Oteri, Hanqing Lou, Li Hsiang Sun, Joseph Levy, Alphan Sahin, Frank LaSita
  • Publication number: 20250030587
    Abstract: A WTRU may comprise circuitry configured to determine a sequence, from a set of sequences comprising 0 0 0 0 0 0 1 1 0 1 1 0, 0 0 0 0 0 1 0 0 0 1 1 1 and 0 0 0 0 0 1 1 1 0 1 1 1. The WTRU may further comprise a transmitter configured to transmit a DMRS, derived from the determined sequence.
    Type: Application
    Filed: October 3, 2024
    Publication date: January 23, 2025
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Alphan Sahin, Moon-iL Lee, Rui Yang
  • Patent number: 12207278
    Abstract: Methods, apparatuses, systems, devices, and computer program products directed to phase-continuous frequency selective precoding are provided. Included among these classes are methods for use in connection with dynamic precoding resource block group (PRG) configuration and with codebook based transmission configuration. A representative of such methods may include any of receiving signaling indicating transmit precoding information; determining a candidate PRG size using any of the transmit precoding information, a rule for determining a PRG size and configured PRG sizes; and configuring or reconfiguring a wireless transmit/receive device in accordance with the candidate PRG size.
    Type: Grant
    Filed: October 25, 2023
    Date of Patent: January 21, 2025
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Afshin Haghighat, Oghenekome Oteri, Alphan Sahin, Shahrokh Nayeb Nazar, Moon-il Lee, Prasanna Herath Mudiyanselage
  • Publication number: 20250024370
    Abstract: Procedures and mechanisms for narrowband multi-channel transmission for wakeup radio (WUR) operation are disclosed. A station (STA) operating in WUR mode may have its a primary connectivity radio (PCR) turned off and its WUR turned and operating according to previously negotiated WUR operating parameters. The STA may monitor, for WUR beacons and frames over a first WUR channel, and determine that the first WUR channel does not support reliable transmission based on no beacons being received within a first duration. The STA may turn off the WUR, and turn on the PCR to send a first short WUR frame including a wakeup reason, and receive a second short WUR frame with a WUR channel assignment. The STA may turn off the PCR, turn on the WUR, and monitor for WUR signals on a second WUR channel according to the WUR channel assignment and the previously negotiated WUR operating parameters.
    Type: Application
    Filed: September 30, 2024
    Publication date: January 16, 2025
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Xiaofei J. Wang, Oghenekome Oteri, Alphan Sahin, Li-Hsiang Sun, Rui Yang
  • Patent number: 12199721
    Abstract: An access point (AP) may transmit a null data packet announcement (NDPA) with an indication of a resource unit of a bandwidth that feedback is requested. The AP may transmit a null data packet (NDP) for measurement of a channel quality for a resource unit of a bandwidth. The AP may transmit, based on a response, another feedback request for resource units of the bandwidth.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: January 14, 2025
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Rui Yang, Robert L. Olesen, Alphan Sahin, Li-Hsiang Sun
  • Patent number: 12192154
    Abstract: Methods and apparatuses are described herein for multiple access schemes for Wireless Local Area Network (WLAN) with full-duplex radios. For example, an access point (AP), in response to receiving a request to send (RTS) from a first station (STA), may transmit a full-duplex clear to send (FD CTS) to the first STA and a full-duplex request to send (FD RTS) to a second STA. In response to transmitting the FD RTS to the second STA, the AP may receive a clear to send (CTS) from the second STA. The AP may transmit, to both the first STA and the second STA, a FD trigger frame that includes scheduling information to enables FD communication with the first STA for uplink (UL) data and the second STA for downlink (DL) data at a same time. The scheduling information may include timing information and channel information for the FD communication.
    Type: Grant
    Filed: December 19, 2023
    Date of Patent: January 7, 2025
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Li Hsiang Sun, Alphan Sahin, Robert L. Olesen, Xiaofei Wang, Rui Yang
  • Publication number: 20240414563
    Abstract: Described herein is an over-the-air computation (OAC) scheme for a federated k-means clustering algorithm to reduce the per-round communication latency when implemented over a wireless network. The OAC scheme relies on an encoder exploiting the representation of a number in a balanced number system and computes the sum of the updates for the federated k-means via signal superposition property of wireless multiple-access channels non-coherently to eliminate the need for precise phase and time synchronization.
    Type: Application
    Filed: May 21, 2024
    Publication date: December 12, 2024
    Applicant: University of South Carolina
    Inventor: Alphan Sahin
  • Publication number: 20240414043
    Abstract: Methods and apparatuses for coexistence of signaling of different 802.11 protocols are provided herein. A station (STA) or access point (AP) may transmit a protocol data unit (PDU) of a first 802.11 protocol and a PDU of a second 802.11 protocol. The transmission of the PDU of the first 802.11 protocol and the transmission of the PDU of the second 802.11 protocol may be at least quasi-orthogonal.
    Type: Application
    Filed: August 22, 2024
    Publication date: December 12, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Alphan Sahin, Oghenekome Oteri, Hanqing Lou, Xiaofei Wang, Li-Hsiang Sun, Rui Yang, Frank La Sita
  • Publication number: 20240414755
    Abstract: Methods and apparatuses for enhancing random access procedures are described herein. A method performed by a station (STA) may include receiving, from an access point (AP), a physical layer convergence procedure (PLCP) protocol data unit (PPDU) in one of an upper frequency band or a lower frequency band. The PPDU may include a trigger frame. The trigger frame may include information indicating an allocation of a plurality of random access (RA) resource units (RA-RUs). Each of the RA-RUs may be associated with one of the upper frequency band or the lower frequency band. The method may include selecting one of the plurality of allocated RA-RUs and transmitting, to the AP, a message using the selected RA-RU.
    Type: Application
    Filed: August 20, 2024
    Publication date: December 12, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Li-Hsiang Sun, Hanqing Lou, Alphan Sahin, Xiaofei Wang, Rui Yang, Frank La Sita
  • Publication number: 20240405829
    Abstract: An access point (AP) may transmit a null data packet announcement (NDPA) with an indication of a resource unit of a bandwidth that feedback is requested. The AP may transmit a null data packet (NDP) for measurement of a channel quality for a resource unit of a bandwidth. The AP may transmit, based on a response, another feedback request for resource units of the bandwidth.
    Type: Application
    Filed: August 9, 2024
    Publication date: December 5, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Rui Yang, Robert L. Olesen, Alphan Sahin, Li-Hsiang Sun
  • Publication number: 20240388929
    Abstract: The disclosure relates to methodology and apparatus for a non-coherent over-the-air computation (OAC) methodology to calculate the majority vote (MV) reliably in fading channel. The disclosed approach relies on modulating the amplitude of the elements of complementary sequences (CSs) based on the sign of the parameters to be aggregated. Since the disclosed method does not use channel state information at the nodes, it is compatible with time-varying channels. The methodology is useful for an unmanned aerial vehicle (UAV) guided by distributed sensors based on the MV computed with the method. The method improves the computation error rate with a longer sequence length in fading channel while maintaining the peak-to-mean-envelope power ratio of the transmitted orthogonal frequency division multiplexing signals to be less than or equal to 3 dB.
    Type: Application
    Filed: April 29, 2024
    Publication date: November 21, 2024
    Inventors: ALPHAN SAHIN, XIAOFENG WANG
  • Patent number: 12137413
    Abstract: Procedures and mechanisms for narrowband multi-channel transmission for wakeup radio (WUR) operation are disclosed. A station (STA) operating in WUR mode may have its a primary connectivity radio (PCR) turned off and its WUR turned and operating according to previously negotiated WUR operating parameters. The STA may monitor, for WUR beacons and frames over a first WUR channel, and determine that the first WUR channel does not support reliable transmission based on no beacons being received within a first duration. The STA may turn off the WUR, and turn on the PCR to send a first short WUR frame including a wakeup reason, and receive a second short WUR frame with a WUR channel assignment. The STA may turn off the PCR, turn on the WUR, and monitor for WUR signals on a second WUR channel according to the WUR channel assignment and the previously negotiated WUR operating parameters.
    Type: Grant
    Filed: November 3, 2023
    Date of Patent: November 5, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Xiaofei J. Wang, Oghenekome Oteri, Alphan Sahin, Li-Hsiang Sun, Rui Yang
  • Patent number: 12132592
    Abstract: A WTRU may comprise circuitry configured to determine DMRS sequences of length 12, 18 and 24 for PI/2 BPSK DFT-s-OFDM modulation. The sequences are optimized for PAPR, CM, frequency flatness, cross-correlation and for channel estimation (cyclic correlation).
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: October 29, 2024
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Alphan Sahin, Moon-il Lee, Rui Yang
  • Publication number: 20240356659
    Abstract: Systems, methods, and instrumentalities are disclosed for transmitting a message. For example, a first radio access technology (RAT) and/or a second RAT may be determined. The first RAT may be determined for reception of data. The second RAT may be determined for the reception of the data, perhaps for example based on an indication received via the first RAT. The data may be received via a first node associated with the first RAT and a second node associated with the second RAT.
    Type: Application
    Filed: June 28, 2024
    Publication date: October 24, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Robert L. Olesen, Rui Yang, Moon-il Lee, Alphan Sahin, Hanqing Lou, Fengjun Xi, Frank La Sita, Byung K. Yi, Janet A. Stern-Berkowitz
  • Publication number: 20240349185
    Abstract: An access point (AP) that supports the IEEE 802.11ba protocol may transmit a frame including a physical layer (PHY) preamble to one or more stations (STAs) over a channel. The PHY preamble may include a plurality of repeated modulated legacy signal (L-SIG) fields to spoof a recipient of the frame and protect a wake up signal (WUS) to be subsequently transmitted by the AP. The AP may transmit the WUS to at least a first STA of the one or more STAs, wherein the at least the first STA is a IEEE 802.11ba compliant STA.
    Type: Application
    Filed: June 28, 2024
    Publication date: October 17, 2024
    Applicant: Interdigital Patent Holdings, INC.
    Inventors: Alphan Sahin, Rui Yang, Frank La Sita, Hanqing Lou, Xiaofei Wang, Li Hsiang Sun
  • Publication number: 20240349190
    Abstract: Methods and apparatuses are described herein for network discovery. A wireless transmit/receive unit (WTRU) may transmit, to a first access point (AP), via a Primary Connectivity Radio (PCR), a request indicating that on a condition that the WTRU is disassociated from the first AP, the WTRU will enter a wake-up radio (WUR) only discovery mode. The WTRU may receive, from the first AP, via the PCR, a management frame that has WUR discovery elements including an indication of at least one channel used by a second AP. The WTRU may perform disassociation from the first AP. The WTRU may activate a WUR and deactivate the PCR. On a condition that the WTRU is disassociated from the first AP, the WTRU may receive, from the second AP, via the WUR, a WUR frame over the at least one channel to enable the WTRU to activate the PCR to initiate association.
    Type: Application
    Filed: June 3, 2024
    Publication date: October 17, 2024
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Li-Hsiang Sun, Hanqing Lou, Oghenekome Oteri, Joseph Levy, Rui Yang, Alphan Sahin
  • Patent number: 12113620
    Abstract: A wireless transmit/receive unit (WTRU) may modulate, based on a number of uplink control bits, a first sequence or the first sequence and a second sequence. The WTRU may spread the first sequence and the second sequence with a complementary sequence pair, concatenate parts of the first sequence and the second sequence in interlaced resource blocks (RBs), and perform an inverse discrete Fourier transform (IDFT) on the interlaced parts. The WTRU may transmit on a physical uplink control channel (PUCCH) a signal outputted by the IDFT.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: October 8, 2024
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Alphan Sahin, Rui Yang, Erdem Bala, Shahrokh Nayeb Nazar
  • Publication number: 20240314794
    Abstract: A wireless transmit/receive unit (WTRU) may receive assignment information for receiving a first codeword using a first modulation and coding scheme (MCS) in a first set of resource blocks (RBs), and a second codeword using a second, different MCS in a second set of RBs. The first and second sets of RBs may be in a first time interval in a first bandwidth part using a first subcarrier spacing. The WTRU may receive, in symbols of the first time interval in the first bandwidth part, the first codeword using the first MCS in the first set of RBs and the second codeword using the second, different MCS in the second set of RBs. At least a portion of the first codeword and at least a portion of the second codeword may be received in at least a first symbol in the symbols in the first time interval.
    Type: Application
    Filed: May 23, 2024
    Publication date: September 19, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Erdem Bala, Afshin Haghighat, Mihaela C. Beluri, Rui Yang, Ananth Kini, Janet A. Stern-Berkowitz, Alphan Sahin
  • Patent number: 12081383
    Abstract: A wireless transmit/receive unit (WTRU) or access point (AP) may transmit a protocol data unit (PDU) of a first 802.11 protocol and a preamble and data of a second 802.11 protocol. The preamble and data of the second 802.11 protocol may be transmitted on resources of the PDU of the first 802.11 protocol with shaping sequences for concurrent transmission.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: September 3, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Alphan Sahin, Oghenekome Oteri, Hanqing Lou, Xiaofei Wang, Li Hsiang Sun, Rui Yang, Frank La Sita
  • Patent number: 12068793
    Abstract: Systems, methods, and instrumentalities are disclosed for transmitting a message. For example, a first radio access technology, RAT, and/or a second RAT may be determined. The first RAT may be determined for reception of data. The second RAT may be determined for the reception of the data, perhaps for example based on an indication received via the first RAT. The data may be received via a first node associated with the first RAT and a second node associated with the second RAT.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: August 20, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Robert L. Olesen, Rui Yang, Moon-il Lee, Alphan Sahin, Hanqing Lou, Fengjun Xi, Frank La Sita, Byung K. Yi, Janet A. Stern-Berkowitz