Patents by Inventor Lujing Cai

Lujing Cai 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: 11395275
    Abstract: Embodiments contemplate wireless transmit/receive unit (WTRU) transmissions of different types of uplink channels and/or signals in a system deployment where multiple destination points may exist. Some embodiments contemplate that a WTRU may select the destination point of a transmission on a dynamic basis. In one or more systems where destination point selection from among multiple potential destination points may be possible for a WTRU transmission, some embodiments contemplate the determination of the handling of hybrid automatic repeat request (HARQ) retransmissions and for different power headroom reporting mechanisms. Embodiments also contemplate the reduction and/or inhibition of WTRU transmissions to destination points to which the WTRU may have lost connectivity.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: July 19, 2022
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Paul Marinier, Ghyslain Pelletier, Diana Pani, J. Patrick Tooher, Lujing Cai
  • Publication number: 20220167258
    Abstract: Aspects of the subject disclosure may include, for example, a network communication device that includes a backhaul link circuit and a Wi-Fi access point to provide broadband services to a service provider's broadband customers and to provide mobility services to the service provider's mobility customers. This network communication device is installed outside of a dwelling unit in order to simplify the installation procedure and avoid property disruption. An extender device registered to a broadband customer user account may associate to the access point for seamless service. User equipment (UE) of the service provider's mobility customers may associate to the access point to receive Wi-Fi roaming services. Other embodiments are disclosed.
    Type: Application
    Filed: November 23, 2020
    Publication date: May 26, 2022
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Bhushan Padhiar, Stewart Barker, Abdellah Tazi, Lujing Cai
  • Publication number: 20210068102
    Abstract: Embodiments contemplate wireless transmit/receive unit (WTRU) transmissions of different types of uplink channels and/or signals in a system deployment where multiple destination points may exist. Some embodiments contemplate that a WTRU may select the destination point of a transmission on a dynamic basis. In one or more systems where destination point selection from among multiple potential destination points may be possible for a WTRU transmission, some embodiments contemplate the determination of the handling of hybrid automatic repeat request (HARQ) retransmissions and for different power headroom reporting mechanisms. Embodiments also contemplate the reduction and/or inhibition of WTRU transmissions to destination points to which the WTRU may have lost connectivity.
    Type: Application
    Filed: October 5, 2020
    Publication date: March 4, 2021
    Inventors: Paul Marinier, Ghyslain Pelletier, Diana Pani, J. Patrick Tooher, Lujing Cai
  • Patent number: 10798684
    Abstract: Embodiments contemplate wireless transmit/receive unit (WTRU) transmissions of different types of uplink channels and/or signals in a system deployment where multiple destination points may exist. Some embodiments contemplate that a WTRU may select the destination point of a transmission on a dynamic basis. In one or more systems where destination point selection from among multiple potential destination points may be possible for a WTRU transmission, some embodiments contemplate the determination of the handling of hybrid automatic repeat request (HARQ) retransmissions and for different power headroom reporting mechanisms. Embodiments also contemplate the reduction and/or inhibition of WTRU transmissions to destination points to which the WTRU may have lost connectivity.
    Type: Grant
    Filed: September 30, 2012
    Date of Patent: October 6, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Paul Marinier, Ghyslain Pelletier, Diana Pani, J. Patrick Tooher, Lujing Cai
  • Publication number: 20200244417
    Abstract: A method performed by a WTRU may comprise receiving a beamformed physical control channel using a first beamformed pilot signal. The beamformed physical control channel may include an indication of a beam for a physical shared channel. The indicated beam of the physical shared channel and a beam of the beamformed physical control channel may be different. The method may further comprise receiving, based on the indicated beam, the physical shared channel using a second beamformed pilot signal. In an embodiment, the WTRU may receive an RRC message including an indication of a code of the first beamformed pilot signal.
    Type: Application
    Filed: April 14, 2020
    Publication date: July 30, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Benoit Pelletier, Lujing Cai, Diana Pani, Hong O. Zhang, Damian C. Hamme
  • Patent number: 10701217
    Abstract: A speed tier based pricing scheme is utilized to increase average revenue per user (ARPU). To offer a speed tier based pricing scheme, the radio environment at a location of the UE can be analyzed to determine the speed tiers that can be offered to the user. In one aspect, an outer-loop scheduler can be utilized to allocate radio bearers to the UE based on a target data throughout associated with a user-selected speed tier. The priority of the non-guaranteed bit rate (GBR) bearers of the UE can be dynamically adjusted to track the target data throughput. In another aspect, a throttling function can be implemented to limit the data throughput of the UE to the target data throughput.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: June 30, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Tony Wah-Tung Wong, Lujing Cai, Abdellah Tazi, Stewart Barker, William Hurst
  • Patent number: 10623160
    Abstract: A wireless transmit/receive unit (WTRU) may receive a radio resource control (RRC) message providing configuration information for a physical control channel. The WTRU may monitor the physical control channel using a pilot signal of the physical control channel. The pilot signal may be derived from the pilot sequence and an index of the physical control channel.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: April 14, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Benoit Pelletier, Lujing Cai, Diana Pani, Hong O. Zhang, Damian C. Hamme
  • Patent number: 10602458
    Abstract: A wireless transmit receive unit (WTRU) may receive a higher layer message from a network that includes a list of transmit diversity offset values. A transmission power level for an uplink signal may be determined, where a transmit diversity offset value from the list is utilized to determine the transmission power level based on a format of the uplink signal. The format may be associated with bit sizes for communication.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: March 24, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Benoit Pelletier, Lujing Cai, Hong Zhang
  • Patent number: 10531366
    Abstract: Disclosed herein are embodiments for Machine Type Communication (MTC). The techniques disclosed may reduce signaling by transmitting MTC data over control planes and avoiding a full cycle of connection procedures typically required for transmission. MTC data may be directly appended to a control plane message. In addition, in order to reduce the signaling load, a WTRU may autonomously release the connection without being told by the network. Techniques may be used to indicate a network provider's machine type communication (MTC) capability. The MTC services or capabilities that may be provided by a respective network operator may be communicated to a WTRU.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: January 7, 2020
    Assignee: IoT Holdings, Inc.
    Inventors: Behrouz Aghili, Joseph M. Murray, Jean-Louis Gauvreau, Ana Lucia A. Pinheiro, Diana Pani, Lujing Cai, Sylvie Gomes, Christopher R. Cave
  • Publication number: 20200007691
    Abstract: A speed tier based pricing scheme is utilized to increase average revenue per user (ARPU). To offer a speed tier based pricing scheme, the radio environment at a location of the UE can be analyzed to determine the speed tiers that can be offered to the user. In one aspect, an outer-loop scheduler can be utilized to allocate radio bearers to the UE based on a target data throughout associated with a user-selected speed tier. The priority of the non-guaranteed bit rate (GBR) bearers of the UE can be dynamically adjusted to track the target data throughput. In another aspect, a throttling function can be implemented to limit the data throughput of the UE to the target data throughput.
    Type: Application
    Filed: August 14, 2019
    Publication date: January 2, 2020
    Inventors: Tony Wah-Tung Wong, Lujing Cai, Abdellah Tazi, Stewart Barker, William Hurst
  • Patent number: 10432798
    Abstract: A speed tier based pricing scheme is utilized to increase average revenue per user (ARPU). To offer a speed tier based pricing scheme, the radio environment at a location of the UE can be analyzed to determine the speed tiers that can be offered to the user. In one aspect, an outer-loop scheduler can be utilized to allocate radio bearers to the UE based on a target data throughout associated with a user-selected speed tier. The priority of the non-guaranteed bit rate (GBR) bearers of the UE can be dynamically adjusted to track the target data throughput. In another aspect, a throttling function can be implemented to limit the data throughput of the UE to the target data throughput.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: October 1, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Tony Wah-Tung Wong, Lujing Cai, Abdellah Tazi, Stewart Barker, William Hurst
  • Patent number: 10342007
    Abstract: A method for use in a wireless transmit/receive unit (WTRU) for receiving data over physical downlink shared channels from different cells, monitoring physical downlink control channels of a first cell for downlink control information associated with the WTRU, and recovering data from the physical downlink control channel in response to the downlink control information.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: July 2, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Benoit Pelletier, Lujing Cai, Diana Pani, Christopher R. Cave
  • Patent number: 10341992
    Abstract: A method and apparatus for transmitting using beam are disclosed. A wireless transmit/receive unit (WTRU) may transmit a first physical random access channel (PRACH) preamble to a base station using a first beam at a first power level. The WTRU may receive an indication that the first PRACH preamble was received by the base station. If the indication was received, the WTRU may transmit data. If the indication was not received, the WTRU may select the first beam or a second beam to use for a second PRACH preamble. Further, the first and second beams may be different beams. If the first beam is selected, the WTRU may increase a transmission power level of the second PRACH preamble by a first power ramp step. If the second beam is selected, the WTRU may not increase the transmission power level of the second PRACH preamble by the first power ramp step.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: July 2, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Benoit Pelletier, Lujing Cai, Hong O. Zhang, Fengjun Xi, Joseph S. Levy
  • Patent number: 10299227
    Abstract: A method for dynamically controlling the transmit power of transmission streams transmitted via multiple antennas is disclosed. A transmit power level for multiple streams is determined based on a first reference channel. The difference of signal to interface ratios (SIRs) between two reference channels may represent a power offset. The power offset may be used to determine gain factors used to transmit data channels on the secondary stream with reference to the gain factor of the first reference channel. The power offset may be used to determine other parameters, such a serving grant or transport block sizes of channels carried on the secondary stream. The power offset may allow transmission parameters of channels on the secondary stream to be determined based on the transmit power level of the primary stream and a gain factor for a reference channel transmitted via the primary stream.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: May 21, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Lujing Cai, Benoit Pelletier, Hong O. Zhang, Fengjun Xi
  • Publication number: 20180343647
    Abstract: A method and apparatus for transmitting using beam are disclosed. A wireless transmit/receive unit (WTRU) may transmit a first physical random access channel (PRACH) preamble to a base station using a first beam at a first power level. The WTRU may receive an indication that the first PRACH preamble was received by the base station. If the indication was received, the WTRU may transmit data. If the indication was not received, the WTRU may select the first beam or a second beam to use for a second PRACH preamble. Further, the first and second beams may be different beams. If the first beam is selected, the WTRU may increase a transmission power level of the second PRACH preamble by a first power ramp step. If the second beam is selected, the WTRU may not increase the transmission power level of the second PRACH preamble by the first power ramp step.
    Type: Application
    Filed: May 7, 2018
    Publication date: November 29, 2018
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Benoit Pelletier, Lujing Cai, Hong O. ZHANG, Fengjun Xi, Joseph S. Levy
  • Publication number: 20180192408
    Abstract: A method for use in a wireless transmit/receive unit (WTRU) for receiving data over physical downlink shared channels from different cells, monitoring physical downlink control channels of a first cell for downlink control information associated with the WTRU, and recovering data from the physical downlink control channel in response to the downlink control information.
    Type: Application
    Filed: March 2, 2018
    Publication date: July 5, 2018
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Benoit Pelletier, Lujing Cai, Diana Pani, Christopher R. Cave
  • Publication number: 20180132195
    Abstract: A method and apparatus for transmission of an uplink signal using transmit diversity at a determined transmission power level. The transmission power level is determined using a transmit diversity offset value from a list of transmit diversity offset values that is selected from a list of transmit diversity offset values based on the format of the uplink signal. The format of the uplink signal is associated with a data size of the uplink signal. The transmit diversity offset value is added to determine the transmission power level. The transmit diversity offset value being a delta value.
    Type: Application
    Filed: January 8, 2018
    Publication date: May 10, 2018
    Applicant: INTERDIGITABL PATENT HOLDINGS, INC.
    Inventors: Benoit Pelletier, Lujing Cai, Hong Zhang
  • Publication number: 20180103418
    Abstract: Disclosed herein are embodiments for Machine Type Communication (MTC). The techniques disclosed may reduce signaling by transmitting MTC data over control planes and avoiding a full cycle of connection procedures typically required for transmission. MTC data may be directly appended to a control plane message. In addition, in order to reduce the signaling load, a WTRU may autonomously release the connection without being told by the network. Techniques may be used to indicate a network provider's machine type communication (MTC) capability. The MTC services or capabilities that may be provided by a respective network operator may be communicated to a WTRU.
    Type: Application
    Filed: December 6, 2017
    Publication date: April 12, 2018
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Behrouz Aghili, Joseph M. Murray, Jean-Louis Gauvreau, Ana Lucia A. Pinheiro, Diana Pani, Lujing Cai, Sylvie Gomes, Christopher R. Cave
  • Patent number: 9913270
    Abstract: A method for use in a wireless transmit/receive unit (WTRU) for receiving data over physical downlink shared channels from different cells, monitoring physical downlink control channels of a first cell for downlink control information associated with the WTRU, and recovering data from the physical downlink control channel in response to the downlink control information.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: March 6, 2018
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Benoit Pelletier, Lujing Cai, Diana Pani, Christopher R. Cave
  • Patent number: 9887752
    Abstract: Systems and methods for managing control signaling overhead for a multi-carrier HSDPA (MC-HSDPA) may be disclosed. In particular, a plurality of downlink carriers may be received and bundled or paired. Configuration information indicative of the bundling may then be generated and transmitted. Additionally, one or more components such as antennas, user equipment (UE), and the like may receive an indication of a configuration or state via a high speed shared control channel (HS-SCCH) order where the indication includes order bits and order types and the configuration may be applied to activate and/or deactivate the components or operations such as uplink closed-loop transmit diversity (CLTD), uplink multiple-input multiple-output (MIMO). The order bits and/or order types may also be extended to support the activation/deactivation of additional carriers of MC-HSDPA.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: February 6, 2018
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Fengjun Xi, Lujing Cai, Joseph S. Levy, Benoit Pelletier, Hong O. Zhang