Patents Assigned to InterDigital Technology Corporation
  • Publication number: 20220182875
    Abstract: A method and system for improving responsiveness in exchanging management and control frames in a wireless local area network are disclosed. An initiator sends a frame (action frame, management frame, CSI frame, control frame, or data frame) to a responder. Upon correctly receiving the frame, the responder sends a response frame to the initiator instead of directly sending an acknowledgement (ACK) packet. The responder preferably accesses the wireless medium to send the response frame in a short inter-frame spacing (SIFS). With this scheme, a long delay associated with having to contend for the wireless medium to send the response frame is avoided and therefore, the responsiveness and timeliness of the feedback mechanism is significantly enhanced. The response frame may be piggybacked on or aggregated with another packet.
    Type: Application
    Filed: February 22, 2022
    Publication date: June 9, 2022
    Applicant: InterDigital Technology Corporation
    Inventors: Arty Chandra, Eldad M. Zeira, Mohammed Sammour, Sudheer A. Grandhi
  • Patent number: 11258542
    Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: February 22, 2022
    Assignee: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Robert Lind Olesen, Eldad M. Zeira, Peter J. Voltz, Yongwen E. Yang, Qingyuan Dai, Chang-Soo Koo, I-Tai Lu, KunJu Tsai
  • Patent number: 11259204
    Abstract: A method and system for improving responsiveness in exchanging management and control frames in a wireless local area network are disclosed. An initiator sends a frame (action frame, management frame, CSI frame, control frame, or data frame) to a responder. Upon correctly receiving the frame, the responder sends a response frame to the initiator instead of directly sending an acknowledgement (ACK) packet. The responder preferably accesses the wireless medium to send the response frame in a short inter-frame spacing (SIFS). With this scheme, a long delay associated with having to contend for the wireless medium to send the response frame is avoided and therefore, the responsiveness and timeliness of the feedback mechanism is significantly enhanced. The response frame may be piggybacked on or aggregated with another packet.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: February 22, 2022
    Assignee: InterDigital Technology Corporation
    Inventors: Sudheer A Grandhi, Arty Chandra, Eldad M Zeira, Mohammed Sammour
  • Patent number: 11239901
    Abstract: Methods and apparatus are described. A wireless transmit/receive unit (WTRU) includes a transceiver and a processor operatively coupled to the transceiver. The transceiver and the processor establish a connection with a first wireless network node and a second wireless network node. The transceiver and the processor also receive power configurations and timing advances from the first wireless network node independently of the second wireless network node. The transceiver and the processor also simultaneously receive downlink signals from both the first wireless network node and the second wireless network node. The downlink signals are independently scheduled by a scheduler of the first wireless network node and a scheduler of the second wireless network node.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: February 1, 2022
    Assignee: InterDigital Technology Corporation
    Inventors: Sana Sfar, Alexander Reznik, Prabhakar Chitrapu, Zinan Lin, Mohammed Sammour, Ana Lucia A. Pinheiro, Mihaela Beluri, Chunxuan Ye, Yogendra Shah, Gregg A. Charlton, Guodong Zhang, Khushali N. Manseta, Ruiyuan Hu
  • Publication number: 20220007284
    Abstract: A method for controlling discontinuous reception in a wireless transmit/receive unit includes defining a plurality of DRX levels, wherein each DRX level includes a respective DRX cycle length and transitioning between DRX levels based on a set of criteria. The transitioning may be triggered by implicit rules.
    Type: Application
    Filed: September 22, 2021
    Publication date: January 6, 2022
    Applicant: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Peter S. Wang, Jin Wang
  • Publication number: 20220007285
    Abstract: A method for controlling discontinuous reception in a wireless transmit/receive unit includes defining a plurality of DRX levels, wherein each DRX level includes a respective DRX cycle length and transitioning between DRX levels based on a set of criteria. The transitioning may be triggered by implicit rules.
    Type: Application
    Filed: September 22, 2021
    Publication date: January 6, 2022
    Applicant: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Peter S. Wang, Jin Wang
  • Publication number: 20210410133
    Abstract: A wireless transmit/receive unit (WTRU) receives control information over a physical downlink control channel in a shared radio resource space monitored by the WTRU. The control information includes radio resource assignment information and an indication of whether the control information includes radio resource assignment information for an uplink shared channel or whether the control information includes radio resource assignment information for a downlink shared channel. The WTRU determines whether the control information is intended for the WTRU based on WTRU identity-masked (ID-masked) cyclic redundancy check (CRC) bits. The WTRU determines, based on the indication, whether the control information is for the uplink shared channel or whether the control information is for the downlink shared channel. The WTRU transmits data over the uplink shared channel based on the radio resource assignment information on a condition that the control information is determined to be for the uplink shared channel.
    Type: Application
    Filed: July 1, 2021
    Publication date: December 30, 2021
    Applicant: InterDigital Technology Corporation
    Inventors: Marian Rudolf, Stephen G. Dick, Philip J. Pietraski
  • Patent number: 11172337
    Abstract: A method performed by a UE may comprise transmitting capability information to an IMS. The capability information may indicate that the UE supports data transfer via IMS. The UE may transmit data and an XML message, based on capability. The XML message may describe the data transmitted. In some embodiments, the data may be binary data, for example, binary animation data. Other binary types may be supported.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: November 9, 2021
    Assignee: InterDigital Technology Corporation
    Inventor: Kamel M. Shaheen
  • Patent number: 11172441
    Abstract: A method for controlling discontinuous reception in a wireless transmit/receive unit includes defining a plurality of DRX levels, wherein each DRX level includes a respective DRX cycle length and transitioning between DRX levels based on a set of criteria. The transitioning may be triggered by implicit rules.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: November 9, 2021
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Peter S. Wang, Jin Wang
  • Patent number: 11171749
    Abstract: A wireless communication system includes an infrastructure device for transmitting and receiving communications to and from a plurality of wireless user terminals. Each wireless user terminal includes a receiver and a controller configured to receive a plurality of orthogonal frequency division multiplexing (OFDM) signals on at least one downlink carrier frequency. Each of the plurality of OFDM signals includes assignment information. The receiver is configured to receive a plurality of downlink signals each responsive to a respective OFDM signal of the plurality of OFDM signals such that each downlink signal is received on a downlink carrier frequency and using a downlink spatial pattern. Further, the controller is configured to dynamically change the downlink carrier frequency of the receiver for receiving the plurality of downlink signals based on the plurality of OFDM signals, wherein the plurality of downlink signals have different spatial patterns.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: November 9, 2021
    Assignee: InterDigital Technology Corporation
    Inventors: Juan Carlos Zuniga, Teresa Hunkeler
  • Patent number: 11160058
    Abstract: In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WTRUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: October 26, 2021
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Jin Wang, Arty Chandra, John S. Chen, Guodong Zhang
  • Publication number: 20210314949
    Abstract: A method and apparatus for controlling transmit power in a wireless local area network (WLAN). For example, a station may receive, from an access point (AP), a beacon frame that includes a field indicating a maximum transmission power for at least one of a plurality of operational bandwidth that the AP supports. The station may determine a transmission power for a signal to be transmitted to the AP based on the at least one of the plurality of operational bandwidths indicated in the received beacon. The station may then transmit the signal at the determined transmission power.
    Type: Application
    Filed: June 21, 2021
    Publication date: October 7, 2021
    Applicant: InterDigital Technology Corporation
    Inventors: Marian Rudolf, Vincent Roy
  • Publication number: 20210289459
    Abstract: A method and wireless transmit/receive unit (WTRU) include a WTRU configured to search a frequency bandwidth, out of a set of potential frequency bandwidths, for synchronization signals. The frequency bandwidth includes a secondary synchronization signal in subcarriers. Other subcarriers in the frequency bandwidth outside of the secondary synchronization signal include data. The WTRU is configured to synchronize using the secondary synchronization signal in the frequency bandwidth.
    Type: Application
    Filed: May 28, 2021
    Publication date: September 16, 2021
    Applicant: InterDigital Technology Corporation
    Inventors: Guodong Zhang, Kyle Jung-Lin Pan, Allan Yingming Tsai
  • Publication number: 20210258949
    Abstract: In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WTRUs), a non-contention based (NCB) channel is established, maintained, and utilized, The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required.
    Type: Application
    Filed: May 3, 2021
    Publication date: August 19, 2021
    Applicant: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Jin Wang, Arty Chandra, John S. Chen, Guodong Zhang
  • Publication number: 20210258950
    Abstract: In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WTRUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required.
    Type: Application
    Filed: May 3, 2021
    Publication date: August 19, 2021
    Applicant: InterDigital Technology Corporation
    Inventors: Stephen E. Terry, Jin Wang, Arty Chandra, John S. Chen, Guodong Zhang
  • Patent number: 11057868
    Abstract: A wireless transmit/receive unit (WTRU) receives radio resource assignment information over a physical downlink control channel. The WTRU determines whether the radio resource assignment information is intended for the WTRU based on WTRU identity-masked (ID-masked) cyclic redundancy check (CRC) bits. The WTRU determines whether the radio resource assignment information is for an uplink shared channel or a downlink shared channel. The WTRU utilizes the radio resource assignment information to transmit data over the uplink shared channel on a condition that the radio resource assignment information is determined to be for the uplink shared channel. The data is transmitted over the uplink shared channel a predetermined number of time slots after reception of the radio resource assignment information.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: July 6, 2021
    Assignee: InterDigital Technology Corporation
    Inventors: Marian Rudolf, Stephen G. Dick, Philip J. Pietraski
  • Publication number: 20210191806
    Abstract: A method of feedback in a wireless transmit receive unit includes providing a precoding matrix index (PMI), error checking the (PMI) to produce an error check (EC) bit, coding the PMI and the EC bit and transmitting the coded PMI and EC bit.
    Type: Application
    Filed: March 8, 2021
    Publication date: June 24, 2021
    Applicant: InterDigital Technology Corporation
    Inventor: Kyle Jung-Lin Pan
  • Patent number: 11044728
    Abstract: A method and apparatus for controlling transmit power in a wireless local area network (WLAN). For example, a station may receive, from an access point (AP), a beacon frame that includes a field indicating a maximum transmission power for at least one of a plurality of operational bandwidth that the AP supports. The station may determine a transmission power for a signal to be transmitted to the AP based on the at least one of the plurality of operational bandwidths indicated in the received beacon. The station may then transmit the signal at the determined transmission power.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: June 22, 2021
    Assignee: InterDigital Technology Corporation
    Inventors: Marian Rudolf, Vincent Roy
  • Patent number: 11026201
    Abstract: A method and apparatus for synchronization in an orthogonal frequency division multiplexing (OFDM) network is disclosed. A wireless transmit/receive unit (WTRU) is configured to receive a primary synchronization signal and a secondary synchronization signal from a cell. The primary synchronization signal and the secondary synchronization signal are spaced by a known number of OFDM symbols. The primary synchronization signal and the secondary synchronization signal are received in a same number of subcarriers in their respective OFDM symbol. A location of at least the secondary synchronization signal in the system bandwidth is variable.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: June 1, 2021
    Assignee: InterDigital Technology Corporation
    Inventors: Guodong Zhang, Kyle Jung-Lin Pan, Allan Yingming Tsai
  • Patent number: 11026287
    Abstract: A wireless transmit/receive unit (WTRU) is disclosed that comprises a processor configured to selectively enable and disable reception of downlink signaling and configured to monitor a buffer of the WTRU for data to transmit. The WTRU comprises a transmitter configured to transmit, while reception of the downlink signaling is disabled, a channel allocation request in response to data in the monitored buffer. The processor is configured, in response to the data in the monitored buffer, to enable reception of the downlink signaling to allow the WTRU to receive an uplink channel allocation. The transmitter is configured, in response to the WTRU receiving an uplink channel allocation, to transmit uplink data on an uplink channel. The processor is configured to track a time when HARQ feedback is expected to be received in response to the transmitted uplink data, and configured to receive the HARQ feedback at the expected time.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: June 1, 2021
    Assignee: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Stephen E. Terry, Guodong Zhang, Stephen G. Dick