Patents by Inventor Douglas R. Castor

Douglas R. Castor 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: 20200305089
    Abstract: Methods and apparatus for changing cell range coverage are disclosed. A wireless transmit/receive unit (WTRU) may include circuitry configured to transmit subframes of radio frames using a physical uplink shared channel (PUSCH), where the subframes are divided into first and second sets. The circuity may include a first power control loop utilized for the first set of subframes and a second power control loop utilized for the second set of subframes. The first power control loop may set transmission power levels for transmission over the PUSCH for the first set of subframes, and the second power control loop may set transmission power levels for transmission over the PUSCH for the second set of subframes. The circuitry may be configured with a first physical uplink control channel (PUCCH) for a first eNodeB and a second PUCCH for a second eNodeB to simultaneously communicate with the first and the second eNodeBs.
    Type: Application
    Filed: April 8, 2020
    Publication date: September 24, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Carl Wang, Yingxue K. Li, Kenneth Kearney, Philip J. Pietraski, Stephen E. Terry, Samian Kaur, Janet A. Stern-Berkowitz, Douglas R. Castor
  • Publication number: 20200275300
    Abstract: A method and apparatus for adjusting a channel quality indicator (CQI) feedback period to increase uplink capacity in a wireless communication system are disclosed. The uplink capacity is increased by reducing the uplink interference caused by CQI transmissions. A wireless transmit/receive unit (WTRU) monitors a status of downlink transmissions to the WTRU and sets the CQI feedback period based on the status of the downlink transmissions to the WTRU. A base station monitors uplink and downlink transmission needs. The base station determines the CQI feedback period of at least one WTRU based on the uplink and downlink transmission needs and sends a command to the WTRU to change the CQI feedback period of the WTRU.
    Type: Application
    Filed: May 14, 2020
    Publication date: August 27, 2020
    Inventors: Paul Marinier, Douglas R. Castor
  • Patent number: 10694414
    Abstract: A method and apparatus for adjusting a channel quality indicator (CQI) feedback period to increase uplink capacity in a wireless communication system are disclosed. The uplink capacity is increased by reducing the uplink interference caused by CQI transmissions. A wireless transmit/receive unit (WTRU) monitors a status of downlink transmissions to the WTRU and sets the CQI feedback period based on the status of the downlink transmissions to the WTRU. A base station monitors uplink and downlink transmission needs. The base station determines the CQI feedback period of at least one WTRU based on the uplink and downlink transmission needs and sends a command to the WTRU to change the CQI feedback period of the WTRU.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: June 23, 2020
    Assignee: INTERDIGITAL TECHNOLOGY CORPORATION
    Inventors: Paul Marinier, Douglas R Castor
  • Publication number: 20200045574
    Abstract: A method for use by an S-REDS may comprise quasi-omni broadcasting a multi-relay channel measurement request to one or more RDSs. The S-REDS may receive a first multi-relay channel measurement report from a first RDS of the one or more RDSs. The first multi-relay channel measurement report may contain first channel measurement information associated with a channel between the first RDS and the S-REDS. The S-REDS may further receive a second multi-relay channel measurement report from the first RDS of the one or more RDSs. The second multi-relay channel measurement report contains second channel measurement information associated with a channel between the first RDS of the one or more RDSs and a D-REDS.
    Type: Application
    Filed: October 9, 2019
    Publication date: February 6, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Guodong Zhang, Robert L. Olesen, Arnab Roy, Qian Zhang, Douglas R. Castor, Ravikumar V. Pragada
  • Publication number: 20190327622
    Abstract: A cellular communications network may be configured to leverage a millimeter wave (mmW) mesh network. Base stations may be configured to operate as mmW base stations (mBs). Such base stations may be configured to participate in the mmW mesh network and to access the cellular communications network (e.g., via cellular access links). A network device of the cellular communications network (e.g., an eNB) may operate as a control entity with respect to one or more mBs. Such a network device may govern mesh backhaul routing with respect to the cellular communications network and the mmW mesh network. Such a network device may configure the mmW mesh network, for example by performing a process to join a new mB to the mmW mesh network. A WTRU may send and receive control information via a cellular access link and may send and receive data via the mmW mesh network.
    Type: Application
    Filed: July 3, 2019
    Publication date: October 24, 2019
    Applicant: IDAC Holdings, Inc.
    Inventors: Onur Sahin, Samian Kaur, Philip J. Pietraski, Ravikumar V. Pragada, Douglas R. Castor, Arnab Roy
  • Patent number: 10397803
    Abstract: A cellular communications network may be configured to leverage a millimeter wave (mmW) mesh network. Base stations may be configured to operate as mmW base stations (tnBs). Such base stations may be configured to participate in the mmW mesh network and to access the cellular communications network (e.g., via cellular access links). A network device of the cellular communications network (e.g., an eNB) may operate as a control entity with respect to one or more niBs. Such a network device may govern mesh backhaul routing with respect to the cellular communications network and the mmW mesh network. Such a network device may configure the mmW mesh network, for example by performing a process to join a new mB to the mmW mesh network. A WTRU may send and receive control information via a cellular access fink and may send and receive data via the mmW mesh network.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: August 27, 2019
    Assignee: IDAC Holdings, Inc.
    Inventors: Onur Sahin, Samian Kaur, Philip J. Pietraski, Ravikumar V. Pragada, Douglas R. Castor, Arnab Roy
  • Patent number: 10321347
    Abstract: Methods and apparatus are described. A long term evolution (LTE) base station includes a processor and a transceiver, which transmit first LTE data to a wireless transmit/receive unit (WTRU) using LTE frequencies. The LTE data is at a time defined by LTE transmission time interval (TTI) boundaries. The processor maps an LTE class of second LTE data to an access class associated with IEEE 802.11e access and transmits the second LTE data to the WTRU using an IEEE 802.11 associated frequency. A transmission time of the second LTE data is based on an LTE TTI boundary after sensing that an IEEE 802.11 associated frequency is not busy.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: June 11, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Ravikumar V. Pragada, Samian Kaur, Douglas R. Castor, Philip J. Pietraski, Arnab Roy
  • Publication number: 20180376479
    Abstract: A base station may sense, on a cell using unlicensed spectrum, that the unlicensed spectrum is available for transmission. The base station may transmit, after sensing that the unlicensed spectrum is available, consecutive subframes. Each subframe may include a physical downlink control channel and a physical downlink shared channel.
    Type: Application
    Filed: August 6, 2018
    Publication date: December 27, 2018
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Samian Kaur, Erdem Bala, Tao Deng, Kandarp Shah, Kiran K. Vanganuru, Philip J. Pietraski, Stephen E. Terry, Rui Yang, Gregory S. Sternberg, Douglas R. Castor, Ravikumar V. Pragada, Mihaela C. Beluri, Janet A. Stern-Berkowitz
  • Patent number: 10153870
    Abstract: A method and apparatus for operating supplementary cells in licensed exempt (LE) spectrum. An aggregating cell operating in a frequency division duplex (FDD) licensed spectrum is aggregated with a LE supplementary cell operating in a time sharing mode for uplink (UL) and downlink (DL) operations. The LE supplementary cell may be an FDD supplementary cell dynamically configurable between an UL only mode, a DL only mode, and a shared mode, to match requested UL and DL traffic ratios. The LE supplementary cell may be a time division duplex (TDD) supplementary cell. The TDD supplementary cell may be dynamically configurable between multiple TDD configurations. A coexistence capability for coordinating operations between the LE supplementary cell with other systems operating in the same channel is provided. Coexistence gaps are provided to measure primary/secondary user usage and permit other systems operating in the LE supplementary cell channel to access the channel.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: December 11, 2018
    Assignee: InterDigital Patent Holdongs, Inc.
    Inventors: Jean-Louis Gauvreau, Martino M. Freda, Zinan Lin, Joseph M. Murray, Chunxuan Ye, Erdem Bala, Mihaela C. Beluri, Douglas R. Castor, Amith V. Chincholi, Angelo A. Cuffaro, Yuying Dai, Alpaslan Demir, Joseph Gredone, Rui Yang, Liangping Ma, Rocco Di Girolamo, Debashish Purkayastha, Athmane Touag
  • Publication number: 20180262939
    Abstract: A method and apparatus for adjusting a channel quality indicator (CQI) feedback period to increase uplink capacity in a wireless communication system are disclosed. The uplink capacity is increased by reducing the uplink interference caused by CQI transmissions. A wireless transmit/receive unit (WTRU) monitors a status of downlink transmissions to the WTRU and sets the CQI feedback period based on the status of the downlink transmissions to the WTRU. A base station monitors uplink and downlink transmission needs. The base station determines the CQI feedback period of at least one WTRU based on the uplink and downlink transmission needs and sends a command to the WTRU to change the CQI feedback period of the WTRU.
    Type: Application
    Filed: May 14, 2018
    Publication date: September 13, 2018
    Inventors: Paul Marinier, Douglas R. Castor
  • Patent number: 10051624
    Abstract: A grant that includes a resource allocation for a subframe set may be communicated. The subframe set may include a subframe resource and another subframe resource following the subframe resource. Sensing, during a sensing time prior to utilization of the subframe resource, that the unlicensed spectrum is available may be performed. Transmitting, based on the sensing, data on the subframe resource and the another subframe resource without further sensing may also be performed.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: August 14, 2018
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Samian Kaur, Erdem Bala, Tao Deng, Kandarp Shah, Kiran K. Vanganuru, Philip J. Pietraski, Stephen E. Terry, Rui Yang, Gregory S. Sternberg, Douglas R. Castor, Ravikumar V. Pragada, Mihaela C. Beluri, Janet A. Stern-Berkowitz
  • Patent number: 10038501
    Abstract: A visible light communication (VLC) device for lighting and data transmission is disclosed. The VLC device may comprise circuitry configured to receive a first stream of bits and determine a first switchpoint for transmitting the first stream of bits and first filler data. The VLC device may further comprise red, green, and blue (RGB) light emitting diodes (LEDs) configured to transmit the first stream of bits and the first filler data in the visible light spectrum. The first filler data may begin to be transmitted at the first switchpoint. Similar to the first stream of bits, a second stream of bits may be received and transmitted by the RGB LEDs of the VLC device. In this way, a naked eye of a human may not detect flicker of the VLC device.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: July 31, 2018
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Douglas R. Castor, Samian Kaur, Weimin Liu
  • Publication number: 20180206139
    Abstract: Systems and methods are provided for transmitting a relay search request frame from a source relay edge directional multigigabit (DMG) station STA (REDS) to the AP and receiving a relay search response frame including a list of at least a first and second relay DMG STA (RDS) in a wireless network. Systems and methods are further provided for transmitting over a first data stream through a direct link between the source REDS and the destination REDS, transmitting over a second data stream through the first RDS between the source REDS and the destination REDS, and transmitting over a third data stream through the second RDS between the source REDS and the destination REDS. Directional-band relay in wireless communications may be used in range extension where two wireless nodes may set up a relayed link without first forming a direct link between them.
    Type: Application
    Filed: July 8, 2016
    Publication date: July 19, 2018
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Guodong Zhang, Robert L. Olesen, Arnab Roy, Qian Zhang, Douglas R. Castor, Ravikumar V. Pragada
  • Publication number: 20180152268
    Abstract: A method and apparatus for operating supplementary cells in licensed exempt (LE) spectrum. An aggregating cell operating in a frequency division duplex (FDD) licensed spectrum is aggregated with a LE supplementary cell operating in a time sharing mode for uplink (UL) and downlink (DL) operations. The LE supplementary cell may be an FDD supplementary cell dynamically configurable between an UL only mode, a DL only mode, and a shared mode, to match requested UL and DL traffic ratios. The LE supplementary cell may be a time division duplex (TDD) supplementary cell. The TDD supplementary cell may be dynamically configurable between multiple TDD configurations. A coexistence capability for coordinating operations between the LE supplementary cell with other systems operating in the same channel is provided. Coexistence gaps are provided to measure primary/secondary user usage and permit other systems operating in the LE supplementary cell channel to access the channel.
    Type: Application
    Filed: January 29, 2018
    Publication date: May 31, 2018
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Jean-Louis Gauvreau, Martino M. Freda, Zinan Lin, Joseph M. Murray, Chunxuan Ye, Erdem Bala, Mihaela C. Beluri, Douglas R. Castor, Amith V. Chincholi, Angelo A. Cuffaro, Yuying Dai, Alpaslan Demir, Joseph Gredone, Rui Yang, Liangping Ma, Rocco Di Girolamo, Debashish Purkayastha, Athmane Touag
  • Patent number: 9930558
    Abstract: Systems, methods, and instrumentalities are provided to implement a method for radio environment, measurement (REM) scheduling, information extraction, storage and processing to generate terrain and object mapping/identification using higher frequency radio signals, directional transmission techniques and external database information.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: March 27, 2018
    Assignee: IDAC Holdings, Inc.
    Inventors: Onur Sahin, Ravikumar V. Pragada, Philip J. Pietraski, Douglas R. Castor, Alan G. Carlton, Dirk Trossen
  • Patent number: 9882684
    Abstract: A method and apparatus for operating supplementary cells in licensed exempt (LE) spectrum. An aggregating cell operating in a frequency division duplex (FDD) licensed spectrum is aggregated with a LE supplementary cell operating in a time sharing mode for uplink (UL) and downlink (DL) operations. The LE supplementary cell may be an FDD supplementary cell dynamically configurable between an UL only mode, a DL only mode, and a shared mode, to match requested UL and DL traffic ratios. The LE supplementary cell may be a time division duplex (TDD) supplementary cell. The TDD supplementary cell may be dynamically configurable between multiple TDD configurations. A coexistence capability for coordinating operations between the LE supplementary cell with other systems operating in the same channel is provided. Coexistence gaps are provided to measure primary/secondary user usage and permit other systems operating in the LE supplementary cell channel to access the channel.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: January 30, 2018
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Jean-Louis Gauvreau, Martino M. Freda, Zinan Lin, Joseph M. Murray, Chunxuan Ye, Erdem Bala, Mihaela C. Beluri, Douglas R. Castor, Amith V. Chincholi, Angelo A. Cuffaro, Yuying Dai, Alpaslan Demir, Joseph Gredone, Rui Yang, Liangping Ma, Rocco Di Girolamo, Debashish Purkayastha, Athmane Touag
  • Publication number: 20170367000
    Abstract: Methods and apparatus are described. A long term evolution (LTE) base station includes a processor and a transceiver, which transmit first LTE data to a wireless transmit/receive unit (WTRU) using LTE frequencies. The LTE data is at a time defined by LTE transmission time interval (TTI) boundaries. The processor maps an LTE class of second LTE data to an access class associated with IEEE 802.11e access and transmits the second LTE data to the WTRU using an IEEE 802.11 associated frequency. A transmission time of the second LTE data is based on an LTE TTI boundary after sensing that an IEEE 802.11 associated frequency is not busy.
    Type: Application
    Filed: September 1, 2017
    Publication date: December 21, 2017
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Ravikumar V. Pragada, Samian Kaur, Douglas R. Castor, Philip J. Pietraski, Arnab Roy
  • Publication number: 20170331552
    Abstract: A visible light communication (VLC) device for lighting and data transmission is disclosed. The VLC device may comprise circuitry configured to receive a first stream of bits and determine a first switchpoint for transmitting the first stream of bits and first filler data. The VLC device may further comprise red, green, and blue (RGB) light emitting diodes (LEDs) configured to transmit the first stream of bits and the first filler data in the visible light spectrum. The first filler data may begin to be transmitted at the first switchpoint. Similar to the first stream of bits, a second stream of bits may be received and transmitted by the RGB LEDs of the VLC device. In this way, a naked eye of a human may not detect flicker of the VLC device.
    Type: Application
    Filed: July 31, 2017
    Publication date: November 16, 2017
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Douglas R. Castor, Samian Kaur, Weimin Liu
  • Patent number: 9807782
    Abstract: A multi radio access technology layer (MRL) is a convergence layer solution, located between the protocol layers and the technology-dependent MAC layers. The MRL layer is technology independent and uses the information received from the underlying technologies to select the most appropriate uplink and downlink technologies to match the respective service requirements.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: October 31, 2017
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Samian Kaur, Alexander Reznik, Douglas R. Castor
  • Patent number: 9788227
    Abstract: Methods and apparatuses are described. A method of configuring a Radio Resource Control (RRC)_Connected wireless transmit/receive unit (WTRU) for wireless local area network (WLAN) cell measurement includes receiving, by the WTRU, an RRCConnectionReconfiguration message. The RRCConnectionReconfiguration message includes a measurement configuration that includes at least one WLAN measurement object on which the WTRU is to perform measurement and at least one measurement reporting configuration including at least an indication that measurement reporting is to be at least one of periodic and event-triggered. At least one measurement is performed on the at least one WLAN measurement object. A measurement report is provided based on the at least one measurement reporting configuration.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: October 10, 2017
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Ravikumar V. Pragada, Samian Kaur, Douglas R. Castor, Philip J. Pietraski, Arnab Roy