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).

  • Publication number: 20200229166
    Abstract: A downlink control information (DCI), such as a blanking DCI (bDCI) message may be transmitted by a base station (e.g., eNB) and received by a mobile device (e.g., UE). The bDCI may indicate that the eNB will not transmit a subsequent DCI to the UE for a duration of time. The UE may be in continuous reception mode or connected discontinuous reception (C-DRX) mode. The UE may therefore determine to enter a sleep state or take other action. The bDCI may specify an explicit blanking duration, or an index indicating a blanking duration from a lookup table, and/or the blanking duration (and/or a blanking duration offset value) may be determined in advance, e.g., semi-statically. When the UE is in C-DRX mode, the UE may be configured such that either the sleep/wake period of the C-DRX mode or the blanking period of the bDCI may take precedence over the other.
    Type: Application
    Filed: March 30, 2020
    Publication date: July 16, 2020
    Inventors: Johnson O. Sebeni, Yang Li, Zhu Ji, Yuchul Kim, Wei Zeng, Dawei Zhang, Haijing Hu, Xiangying Yang, Li Su
  • Publication number: 20200228189
    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: January 7, 2020
    Publication date: July 16, 2020
    Inventors: Jia Tang, Beibei Wang, Dawei Zhang, Haitong Sun, Johnson O. Sebeni, Pengkai Zhao, Ping Wang, Wei Zeng, Yang Li, Zhu Ji
  • Patent number: 10708002
    Abstract: A device, system and method for determining when to initiate certain operations associated with received data. The method is performed at a device connected to a network. The method includes estimating a first number of repetitions of a subframe which is associated with a likelihood that the device will successfully perform an operation based on the subframe. The method further includes delaying initiating the operation for the subframe until a received number of repetitions of the subframe is greater than or equal to the first number of repetitions.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: July 7, 2020
    Assignee: Apple Inc.
    Inventors: Zhu Ji, Yang Li, Johnson O. Sebeni, Junsung Lim
  • Publication number: 20200195410
    Abstract: Apparatuses, systems, and methods for a user equipment device (UE) to perform a method using a status change of a timer associated with a connected mode discontinuous reception (CDRX) communication session with a base station to trigger a switch from using a first bandwidth part (BWP) to a second BWP as the active BWP for the CDRX communication session. The timer may be an on-duration timer, an inactivity timer, or a retransmission timer. The UE may also alter a monitoring schedule of a physical downlink control channel (PDCCH) in response to detecting the status change of the timer. The second BWP may have a wider or narrower bandwidth than the first BWP, depending on the type of timer and the type of status change.
    Type: Application
    Filed: October 2, 2019
    Publication date: June 18, 2020
    Inventors: Yang Li, Yuchul Kim, Zhu Ji, Beibei Wang, Jia Tang, Wei Zeng, Dawei Zhang, Johnson O. Sebeni
  • Patent number: 10681643
    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: June 17, 2019
    Date of Patent: June 9, 2020
    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: 10680785
    Abstract: A method, device and integrated circuit for receiving signals in a narrow bandwidth range from a base station of a network, the narrow bandwidth range being a portion of an overall bandwidth range of the network and the signals comprising one or more of cell-specific reference signal (CRS) tones, determining whether a condition exists based on the one or more CRS tones, when the condition exists, extending the narrow bandwidth range to an extended narrow bandwidth range, the extended narrow bandwidth range including at least one further CRS tone than the narrow bandwidth range and monitoring the extended narrow bandwidth range to receive further signals comprising the at least one further CRS tone.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: June 9, 2020
    Assignee: Apple Inc.
    Inventors: Junsung Lim, Li Su, Johnson O. Sebeni, Yang Li, Young Jae Kim, Zhu Ji
  • Patent number: 10673541
    Abstract: Methods, systems and apparatus for a user equipment to mitigate interference in a wireless charging state. The user equipment may determine when the user equipment enters a wireless charging state and, when the user equipment enters the wireless charging state, activate an interference mitigation. The user equipment may further determine when the UE exits the wireless charging state and, when the user equipment exits the wireless charging state, deactivate the interference mitigation.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: June 2, 2020
    Assignee: Apple Inc.
    Inventors: Srinivasan Nimmala, Sethuraman Gurumoorthy, Vijay Venkataraman, Vijay Kumar Ramamurthi, Srirang A. Lovlekar, Lakshmi N. Kavuri, Sang Ho Baek, Yifan Zhu, Karthik Anantharaman, Rangakrishna Nallandigal, Sree Ram Kodali, Adesh Kumar, Xin Wang, Eyad Al-Shemali, Xiangpeng Jing, Sivaramachandran Ganesan, Longda Xing, Jianxiong Shi, Sami M. Almalfouh, Zhu Ji, Johnson O. Sebeni, Beibei Wang, Sunny Arora
  • Patent number: 10666489
    Abstract: This disclosure relates to techniques for supporting narrowband device-to-device wireless communication, including possible techniques for providing synchronization sequences. A first wireless device may transmit a preamble of a device-to-device wireless communication with a second wireless device. The preamble may include a first synchronization sequence. The first synchronization sequence may include multiple repetitions of a basis sequence, multiplied by a cover code. The basis sequence may span multiple orthogonal frequency division multiplexing symbols.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: May 26, 2020
    Assignee: Apple Inc.
    Inventors: Yang Li, Tianyan Pu, Li Su, Zhu Ji
  • Publication number: 20200163073
    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: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    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
  • Patent number: 10660114
    Abstract: Apparatuses, systems, and methods for a wireless device to perform simultaneous uplink activity for multiple RATs in the same carrier using frequency division multiplexing. The wireless device may establish a first wireless link with a first base station according to a first radio access technology (RAT) and a second wireless link with a second base station according to a second RAT. The first base station may provide a first cell operating in a first system bandwidth and the second base station may provide a second cell operating in a second system bandwidth. The wireless device may determine whether the wireless device has uplink activity scheduled according to both the first RAT and the second RAT. If so, the wireless device may perform uplink activity for both the first RAT and the second RAT in the first system bandwidth using frequency division multiplexing.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: May 19, 2020
    Assignee: Apple Inc.
    Inventors: Yang Li, Wei Zeng, Zhu Ji, Beibei Wang, Jia Tang, Yuchul Kim, Haijing Hu, Dawei Zhang, Xiangying Yang, Sami M. Almalfouh, Johnson O. Sebeni, Wei Zhang, Tianyan Pu
  • Publication number: 20200145918
    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: Application
    Filed: October 2, 2019
    Publication date: May 7, 2020
    Inventors: Zhu Ji, Jia Tang, Dawei Zhang, Wei Zeng, Yuchul Kim, Pengkai Zhao, Beibei Wang, Haitong Sun, Wei Zhang
  • Publication number: 20200145924
    Abstract: A device may obtain, through wireless signaling from a network, a time-domain wireless-resource allocation (TWRA) pattern allocated to the device by the network and corresponding to a future time interval (TTI) for which the device has not yet decoded corresponding control information. This enables the device to conduct wireless communications during the TTI using resources allocated according to the obtained TWRA pattern, without first having to decode control information to identify the TWRA pattern. The device may obtain the TWRA pattern by obtaining an indication from the network that the TWRA pattern remains associated with future wireless communications of the device until indicated otherwise by the network, and/or by transmitting to the network an indication of preferred parameters associated with the future wireless communications and the TWRA pattern, and/or by transmitting to the network a request to have the network change from a different TWRA pattern to the TWRA pattern.
    Type: Application
    Filed: September 25, 2019
    Publication date: May 7, 2020
    Inventors: Jia Tang, Haitong Sun, Dawei Zhang, Yuchul Kim, Zhu Ji, Wei Zeng, Wei Zhang, Ping Wang, Sreevalsan Vallath
  • Publication number: 20200145080
    Abstract: Apparatuses, systems, and methods for a wireless device to perform beam management procedures with a base station. A wireless device in communication with a 5G base station may perform measurements and determine constraints relevant to beam selection. The device may select a recommended beam based on the measurements and constraint(s) and indicate the recommended beam to the base station. A recommended uplink beam may not correspond to a recommended downlink beam.
    Type: Application
    Filed: September 27, 2019
    Publication date: May 7, 2020
    Inventors: Jia Tang, Sami M. Almalfouh, Haitong Sun, Zhu Ji, Wei Zeng, Johnson O. Sebeni, Wei Zhang, Beibei Wang, Dawei Zhang, Pengkai Zhao
  • Publication number: 20200128423
    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: Application
    Filed: December 18, 2019
    Publication date: April 23, 2020
    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: 20200107279
    Abstract: Apparatuses, systems, and methods for providing maximum transmit power control when utilizing multiple radio access technologies. For example, a wireless communication device comprising two cellular radios may intend to transmit on the first radio, while concurrently transmitting on the second radio. To ensure compliance with a maximum transmit power limitation, the device may determine an allowed transmit power level of the first radio, representing a difference between the maximum transmit power limitation and the current transmit power level being transmitted by the second radio. The device may also determine a threshold power level for a communication by the first radio. If the allowed transmit power level meets the threshold power level, then the device may transmit the first communication having a power level between the threshold power level and the allowed transmit power level. Otherwise, the device may forego transmission of the first communication.
    Type: Application
    Filed: September 23, 2019
    Publication date: April 2, 2020
    Inventors: Haitong Sun, Johnson O. Sebeni, Zhu Ji, Dawei Zhang, Wei Zhang, Yuchul Kim, Tianyan Pu, Pengkai Zhao, Wei Zeng, Jia Tang, Ping Wang, Wanping Zhang, Yang Li
  • Publication number: 20200107400
    Abstract: Apparatuses, systems, and methods for providing downlink control for non coherent joint transmission. A cellular base station may provide downlink control information associated with a non coherent joint transmission downlink data communication to a wireless device, which may receive the downlink control information. The downlink control information may be provided as a single downlink control information including scheduling information for two data streams of the non coherent joint transmission data communication, or a portion of a multi-stage downlink control information transmission. The wireless device may receive the non coherent joint transmission downlink data communication based at least in part on the downlink control information.
    Type: Application
    Filed: September 23, 2019
    Publication date: April 2, 2020
    Inventors: Haitong Sun, Johnson O. Sebeni, Zhu Ji, Dawei Zhang, Wei Zhang, Yuchul Kim, Tianyan Pu, Pengkai Zhao, Wei Zeng
  • Publication number: 20200107340
    Abstract: A user equipment device may determine whether to power down one or more components based at least on a scheduling parameter that includes an indication of cross-slot scheduling. The device may power down the one or more components prior to decoding control information during a slot for which the scheduling parameter indicates that cross-slot scheduling is in place.
    Type: Application
    Filed: September 18, 2019
    Publication date: April 2, 2020
    Inventors: Jia Tang, Wei Zhang, Wei Zeng, Haitong Sun, Yuchul Kim, Ping Wang, Sreevalsan Vallath, Zhu Ji, Dawei Zhang
  • Patent number: 10609700
    Abstract: A downlink control information (DCI), such as a blanking DCI (bDCI) message may be transmitted by a base station (e.g., eNB) and received by a mobile device (e.g., UE). The bDCI may indicate that the eNB will not transmit a subsequent DCI to the UE for a duration of time. The UE may be in continuous reception mode or connected discontinuous reception (C-DRX) mode. The UE may therefore determine to enter a sleep state or take other action. The bDCI may specify an explicit blanking duration, or an index indicating a blanking duration from a lookup table, and/or the blanking duration (and/or a blanking duration offset value) may be determined in advance, e.g., semi-statically. When the UE is in C-DRX mode, the UE may be configured such that either the sleep/wake period of the C-DRX mode or the blanking period of the bDCI may take precedence over the other.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: March 31, 2020
    Assignee: Apple Inc.
    Inventors: Johnson O. Sebeni, Yang Li, Zhu Ji, Yuchul Kim, Wei Zeng, Dawei Zhang, Haijing Hu, Xiangying Yang, Li Su
  • Publication number: 20200091989
    Abstract: The present disclosure relates to opportunistically selecting an antenna in an electronic device having multiple antennas. A baseband processor of the electronic device may connect to a first cellular tower providing cellular service at a first frequency using a first antenna of the electronic device. The baseband processor may then receive an indication of a handover event to a second cellular tower operating at a second frequency. The baseband processor may determine signal measurements of the second cellular tower for each antenna of the electronic device that is capable of operating at the second frequency. The baseband processor may execute a handover to the second cellular tower using the antenna associated with the best performing signal measurements. In this manner, an antenna may be opportunistically selected based on performance of the antenna, improving operation of the electronic device and quality of cellular service.
    Type: Application
    Filed: September 19, 2018
    Publication date: March 19, 2020
    Inventors: Vijendrakumar K. Ashiwal, Dikshit Garg, Vijay Gadde, Sharad Garg, Jia Tang, Zhu Ji, Mohit Narang, Tiberiu Muresan
  • Publication number: 20200084650
    Abstract: This disclosure relates to techniques for detecting a signal and powering off at least some receiver components if no signal is detected. A wireless device may take one or more measurements of one or more signals. The wireless device may determine, based on the measurements, whether a signal (e.g., a signal of a licensed assisted access cell) is anticipated during an upcoming time period, e.g., a subframe or portion of a subframe. If no signal is anticipated, the wireless device may power off at least some receiver functions.
    Type: Application
    Filed: September 7, 2018
    Publication date: March 12, 2020
    Inventors: Beibei Wang, Zhu Ji, Johnson O. Sebeni, Jia Tang, Yang Li