Patents by Inventor Zhu Ji

Zhu Ji 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: 11202259
    Abstract: Apparatuses, systems, and methods for performing power saving for a wireless device. The wireless device may connect to a base station (BS). The wireless device may establish discontinuous reception (DRX) with the BS, where the DRX comprises a DRX cycle having a cycle length. The wireless device may receive reference signal information from the base station in association with the DRX cycle length, where the reference signal information is transmitted according to the cycle length. The wireless device may perform tracking using the reference signal information.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: December 14, 2021
    Assignee: Apple Inc.
    Inventors: Zhu Ji, Jia Tang, Dawei Zhang, Wei Zeng, Yuchul Kim, Pengkai Zhao, Beibei Wang, Haitong Sun, Wei Zhang
  • Publication number: 20210321265
    Abstract: An evolved Node B (eNB) serves as a primary serving cell (PCell) providing a primary component carrier (PCC) in a licensed spectrum to a user equipment (UE) in a carrier aggregation (CA) scheme. A secondary component carrier (SCC) is provided in an unlicensed spectrum. The eNB monitors parameters of bandwidths in the unlicensed spectrum, when at least one of the parameters indicates a change in availability of a select one of the bandwidths, the eNB generates a control indicator defining the change in availability of the bandwidth and broadcasts the control indicator to the UE, wherein the control indicator affects a modification in a transceiver of the UE associated with the bandwidth.
    Type: Application
    Filed: April 26, 2021
    Publication date: October 14, 2021
    Inventors: Tianyan PU, Farouk BELGHOUL, Wei ZENG, Wei ZHANG, Xiaowen WANG, Yang LI, Ping WANG, Haitong SUN, Beibei WANG, Yuchul KIM, Johnson O. SEBENI, Dawei ZHANG, Sami M. ALMALFOUH, Zhu JI, Sunny ARORA
  • Publication number: 20210289583
    Abstract: This disclosure relates to techniques for a wireless device to perform millimeter wavelength communication with increased reliability and power efficiency using sensor inputs. The sensor inputs may include motion, rotation, or temperature measurements, among various possibilities. The sensor inputs may be used when performing beamforming tracking, antenna configuration, transmit and receive chain measurements and selection, and/or in any of various other possible operations.
    Type: Application
    Filed: March 8, 2021
    Publication date: September 16, 2021
    Inventors: Wei Zhang, Pengkai Zhao, Shiva Krishna Narra, Sriram Subramanian, Madhukar K. Shanbhag, Sanjeevi Balasubramanian, Junsung Lim, Jia Tang, Galib A. Mohiuddin, Yu-Lin Wang, Zhu Ji, Johnson O. Sebeni
  • Patent number: 11102738
    Abstract: Apparatuses, systems, and methods for performing timing synchronization between a base station and a user equipment device within an unlicensed spectrum band. In some scenarios, beamforming tracking may also be performed. Upon determining that a transmission medium within the unlicensed spectrum band is available for transmission, a base station may transmit a plurality of synchronization signal blocks (SSBs), or a plurality of copies of one SSB, with associated remaining minimum system information (RMSI) blocks, within a single time instance within a SSB burst window. The SSBs may be transmitted at different frequency positions and according to distinct beamforming configurations. The SSBs and RMSI blocks may be configured such that a receiving user equipment device may determine the time-domain, and optionally the frequency-domain, position of the SSB and RMSI within the SSB burst window, to allow timing synchronization and optionally beamforming tracking.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: August 24, 2021
    Assignee: Apple Inc.
    Inventors: Wei Zhang, Wei Zeng, Tianyan Pu, Haitong Sun, Jia Tang, Dawei Zhang, Sami M. Almalfouh, Zhu Ji, Johnson O. Sebeni
  • Patent number: 11076359
    Abstract: A device, system, and method adaptively adjusts uplink power transmission to component carriers in carrier aggregation. The method is performed at a user equipment configured with a carrier aggregation functionality including a primary component carrier (PCC) and a secondary component carrier (SCC), the UE using a first transmit power for an uplink transmission on the PCC and using a second transmit power for the uplink transmission on the SCC. The method includes determining whether a total transmit power including the first and second transmit powers for the uplink transmission exceeds a predetermined threshold. The method includes, when the total transmit power exceeds the predetermined threshold, adjusting the first transmit power based on a connectivity parameter for the PCC. The method includes adjusting the second transmit power based on the adjusting of the first transmit power.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: July 27, 2021
    Assignee: Apple Inc.
    Inventors: Zhu Ji, Ruirui Zong, Wenshan Pan, Lei Li, Yaoqi Yan, Elliot S. Briggs
  • Publication number: 20210211972
    Abstract: A user equipment (UE) supports communication over a first (lower) frequency range and a second (higher) frequency range. The UE determines an extent of preference of the second frequency range over the first frequency range, e.g., based on one or more of the following: sensor measurements; physical channel measurements; battery conditions; weather conditions; voice call activity; indoor/outdoor/in-car status; learned relationships between previous location-time conditions and performance on the second frequency range; etc. The UE device may control search activity and/or measurement activity on the second frequency range based on the preference extent, e.g., by controlling rates of repetition of search and/or measurement on the second frequency range, or by adding a measurement bias to a measurement reporting threshold, or by adding a delay to a measurement reporting time for a measurement, or by disabling search and measurement on the second frequency range.
    Type: Application
    Filed: October 29, 2020
    Publication date: July 8, 2021
    Inventors: Wei Zhang, Alosious Pradeep Prabhakar, Pengkai Zhao, Vijay Venkataraman, Junsung Lim, Zhu Ji, Johnson O. Sebeni, Yu-Lin Wang, Galib A. Mohiuddin, Sriram Subramanian, Shiva Krishna Narra, Madhukar K. Shanbhag, Sanjeevi Balasubramanian, Daniel A. West, Rohit R. Matolia
  • Patent number: 11057790
    Abstract: Apparatuses, systems, and methods for a wireless device to perform a method including performing one or more of periodic beam quality measurements and/or event-based beam quality measurements, determining, based at least in part on one or more of the periodic beam quality measurements and/or the event-based beam quality measurements, a recommended beam quality measurement configuration, and transmitting, to a base station serving the UE, the recommended beam quality measurement configuration. In addition, the UE may perform receiving, from the base station, instructions regarding the beam quality measurement configuration. The instructions may include instructions to activate, deactivate, and/or modify at least one beam quality measurement configuration. In addition, the instructions may be based, at least in part, on the recommended beam quality measurement configuration.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: July 6, 2021
    Assignee: Apple Inc.
    Inventors: Wei Zhang, Tianyan Pu, Yang Li, Haitong Sun, Wei Zeng, Jia Tang, Beibei Wang, Sami M. Almalfouh, Zhu Ji, Johnson O. Sebeni, Yuchul Kim, Dawei Zhang
  • Publication number: 20210204342
    Abstract: Apparatuses, systems, and methods for a wireless device to perform substantially concurrent communications with a next generation network node and a legacy network node. The wireless device may be configured to stablish a first wireless link with a first cell according to a RAT, where the first cell operates in a first system bandwidth and establish a second wireless link with a second cell according to a RAT, where the second cell operates in a second system bandwidth. Further, the wireless device may be configured to perform uplink activity for both the first RAT and the second RAT by TDM uplink data for the first RAT and uplink data for the second RAT if uplink activity is scheduled according to both the first RAT and the second RAT.
    Type: Application
    Filed: March 15, 2021
    Publication date: July 1, 2021
    Inventors: Wei Zeng, Haijing Hu, Yuchul Kim, Dawei Zhang, Xiangying Yang, Zhu Ji, Yang Li, Beibei Wang, Jia Tang, Sarni M. Almalfouh, Johnson O. Sebeni, Wei Zhang, Tianyan Pu, Vijay Venkataraman, Christian W. Mucke
  • Publication number: 20210203401
    Abstract: Apparatuses, systems, and methods for a wireless device to perform methods to implement mechanisms for a UE to request a beam quality measurement procedure. A user equipment device may be configured to perform a method including performing transmitting a request to perform a beam quality measurement procedure for downlink receptions (e.g., a P3 procedure) to a base station/network entity, receiving instructions to perform the beam quality measurement procedure from the base station, and transmitting results of the beam quality measurement procedure to the base station. In some embodiments, transmission of the request may be response to at least one trigger condition and/or detection of a condition at the UE. The request may include an indication of a preferred timing offset. The instructions to perform the beam quality measurement procedure may include a schedule for the beam quality measurement.
    Type: Application
    Filed: March 15, 2021
    Publication date: July 1, 2021
    Inventors: Jia Tang, Beibei Wang, Dawei Zhang, Haitong Sun, Johnson O. Sebeni, Pengkai Zhao, Ping Wang, Wei Zeng, Yang Li, Zhu Ji
  • Patent number: 11044276
    Abstract: A wireless device determines a location, identifies a mobile network operator (MNO), and/or experiences a network event. In some instances, the wireless device recognizes a base station as being operated by the MNO. Based on the location, the MNO and/or the network event, the wireless device determines a security action. The security action can include one or more of: (i) ignoring a network command associated with the network event, (ii) providing an alert notification via a user interface of the wireless device alerting a user of a security risk associated with the location, MNO, and/or network event, or (iii) ignoring communication from the base station temporarily or for an indefinite period of time. In some instances, the security action includes proceeding with normal communication with the base station at the location using network services of the MNO.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: June 22, 2021
    Assignee: Apple Inc.
    Inventors: Elliot S. Briggs, Jason A. Novak, Samuel D. Post, Zhu Ji
  • Patent number: 11032764
    Abstract: A method and device for scheduling SR transmissions for a user equipment (UE) associated with an evolved Node B (eNB) of a Long Term Evolution (LTE) network. The method includes determining an SR is to be transmitted to the LTE network, determining an uplink grant behavior of the eNB, when the uplink grant behavior of the eNB indicates that previous uplink grants satisfy a threshold of previous grants occurring in onDurations of the cycle of a C-DRX functionality, selecting one of the at least one SR opportunity that follows a next onDuration relative to when the indication is received and scheduling the SR in the one of the at least one SR opportunity that follows the next onDuration. The method further including determining an uplink grant turnaround time associated with the eNB, and selecting one of the at least one SR opportunity based on the uplink grant turnaround time.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: June 8, 2021
    Assignee: Apple Inc.
    Inventors: Beibei Wang, Zhu Ji, Johnson O. Sebeni
  • Patent number: 11012139
    Abstract: Adaptive multiplexing and transmit/receive diversity. A wireless device may include multiple antennas. A first set of antennas may be used for communication. One or more trigger conditions may be determined, and additional antennas may be activated for measurement. Based on the measurement(s), a second set of antennas may be selected and used for communication.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: May 18, 2021
    Assignee: Apple Inc.
    Inventors: Jia Tang, Zhu Ji, Yang Li, Johnson O. Sebeni, Yu-Lin Wang, Sulabh Khandelwal, Beibei Wang, Zheng Zhang
  • Patent number: 10993117
    Abstract: An evolved Node B (eNB) serves as a primary serving cell (PCell) providing a primary component carrier (PCC) in a licensed spectrum to a user equipment (UE) in a carrier aggregation (CA) scheme. A secondary component carrier (SCC) is provided in an unlicensed spectrum. The eNB monitors parameters of bandwidths in the unlicensed spectrum, when at least one of the parameters indicates a change in availability of a select one of the bandwidths, the eNB generates a control indicator defining the change in availability of the bandwidth and broadcasts the control indicator to the UE, wherein the control indicator affects a modification in a transceiver of the UE associated with the bandwidth.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: April 27, 2021
    Assignee: Apple Inc.
    Inventors: Tianyan Pu, Farouk Belghoul, Wei Zeng, Wei Zhang, Xiaowen Wang, Yang Li, Ping Wang, Haitong Sun, Beibei Wang, Yuchul Kim, Johnson O. Sebeni, Dawei Zhang, Sami M. Almalfouh, Zhu Ji, Sunny Arora
  • Patent number: 10973070
    Abstract: Apparatuses, systems, and methods for a wireless device to perform substantially concurrent communications with a next generation network node and a legacy network node. The wireless device may be configured to establish a first wireless link with a first cell according to a RAT, where the first cell operates in a first system bandwidth and establish a second wireless link with a second cell according to a RAT, where the second cell operates in a second system bandwidth. Further, the wireless device may be configured to perform uplink activity for both the first RAT and the second RAT by TDM uplink data for the first RAT and uplink data for the second RAT if uplink activity is scheduled according to both the first RAT and the second RAT.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: April 6, 2021
    Assignee: Apple Inc.
    Inventors: Wei Zeng, Haijing Hu, Yuchul Kim, Dawei Zhang, Xiangying Yang, Zhu Ji, Yang Li, Beibei Wang, Jia Tang, Sami M. Almalfouh, Johnson O. Sebeni, Wei Zhang, Tianyan Pu, Vijay Venkataraman, Christian W. Mucke
  • Patent number: 10973008
    Abstract: This disclosure relates to techniques for a wireless device to indicate a preferred bandwidth part and duty cycle in a cellular communication system. A wireless device and a cellular base station may establish a radio resource control connection. The wireless device may transmit an indication of a preferred bandwidth part, or a preferred communication duty cycle, or both, to the cellular base station. The cellular base station may select a bandwidth part, or communication duty cycle, or both, based at least in part on the indication provided by the wireless device, and may transmit an indication of the selected bandwidth part, communication duty cycle, or both, to the wireless device. The cellular base station and the wireless device may perform cellular communication using the selected bandwidth part, communication duty cycle, or both.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: April 6, 2021
    Assignee: Apple Inc.
    Inventors: Sami M. Almalfouh, Yuchul Kim, Wei Zhang, Tianyan Pu, Zhu Ji, Dawei Zhang, Wei Zeng, Johnson O. Sebeni, Yang Li
  • Patent number: 10951301
    Abstract: Apparatuses, systems, and methods for a wireless device to perform methods to implement mechanisms for a UE to request a beam quality measurement procedure. A user equipment device may be configured to perform a method including performing transmitting a request to perform a beam quality measurement procedure for downlink receptions (e.g., a P3 procedure) to a base station/network entity, receiving instructions to perform the beam quality measurement procedure from the base station, and transmitting results of the beam quality measurement procedure to the base station. In some embodiments, transmission of the request may be response to at least one trigger condition and/or detection of a condition at the UE. The request may include an indication of a preferred timing offset. The instructions to perform the beam quality measurement procedure may include a schedule for the beam quality measurement.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: March 16, 2021
    Assignee: Apple Inc.
    Inventors: Jia Tang, Beibei Wang, Dawei Zhang, Haitong Sun, Johnson O. Sebeni, Pengkai Zhao, Ping Wang, Wei Zeng, Yang Li, Zhu Ji
  • Patent number: 10952147
    Abstract: This disclosure relates to techniques for opportunistically depowering receiver chains of a wireless device. Based on control information, a device may determine whether the current number of active receiver chains can be reduced while maintaining a target achievable code rate for a period of data reception associated with the control information. Additionally, the device may generate and use a lookup table to determine whether to depower receiver chains, and which receiver chains to depower.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: March 16, 2021
    Assignee: Apple Inc.
    Inventors: Tianyan Pu, Sai Sravan Bharadwaj Karri, Wei Zhang, Swaminathan Balakrishnan, Xiantao Sun, Beibei Wang, Manish G. Vemulapalli, Jia Tang, Sami M. Almalfouh, Zhu Ji, Sachin J. Sane
  • Patent number: 10945268
    Abstract: Apparatuses, systems, and methods for a wireless device to perform user equipment (UE) initiated beam management procedures with a base station or gNB. A wireless device in communication with a 5G base station may detect degradation in the pair of transmit and receive beams between the gNB and the device. The device may select a preferred beam management procedure and indicate the preference to the gNB.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: March 9, 2021
    Assignee: Apple Inc.
    Inventors: Yang Li, Haitong Sun, Zhu Ji, Yuchul Kim, Beibei Wang, Wei Zhang, Wei Zeng, Jia Tang, Tianyan Pu, Sami M. Almalfouh, Johnson O. Sebeni, Dawei Zhang
  • Publication number: 20210045183
    Abstract: Apparatuses, systems, and methods for a base station to perform a method construct dynamic hierarchical sub-configurations of bandwidth parts (BWPs) for use in a connected mode discontinuous reception (CDRX) communication session with a user equipment (UE) device. The base station may configure a first BWP at a baseband frequency associated with the CDRX communication session as a default BWP, a second BWP with a wider bandwidth than the first BWP as a transmission BWP, and one or more third BWPs as resting BWPs. The transmission BWP and the one or more resting BWPs may be configured to periodically override the default BWP as the active BWP for a predetermined number of CDRX cycles. The transmission BWP may be utilized, when activated to perform data transmission by UE device, and the one or more resting BWPs may be utilized, when activated, for performing channel measurements.
    Type: Application
    Filed: October 13, 2020
    Publication date: February 11, 2021
    Inventors: Wei Zhang, Yuchul Kim, Junsung Lim, Haitong Sun, Wei Zeng, Sami M. Almalfouh, Yang Li, Zhu Ji, Dawei Zhang, Johnson O. Sebeni
  • Publication number: 20200413239
    Abstract: This disclosure relates to techniques for performing presence discovery in a wireless communication. A wireless device may monitor a wireless medium for discovery signals. A candidate discovery signal may be detected. A frequency offset estimation consistency check may be performed on the candidate discovery signal. A peak to sidelobe ratio check may be performed on the candidate discovery signal. The wireless device may determine whether the candidate discovery signal is a false positive based at least in part on the frequency offset estimation consistency check and the peak to sidelobe ratio check.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 31, 2020
    Inventors: Tianyan Pu, Li Su, Zhu Ji, Yang Li