Patents by Inventor Yujian Zhang

Yujian Zhang 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: 12041487
    Abstract: A process for execution by user equipment (UE) for activation or deactivation of a Radio Link Control (RLC) entity for Packet Data Convergence Protocol (PDCP) duplication includes identifying a set of RLC entities that are configured by a Radio Resource Control (RRC) for communication using PDCP. The process includes, for each RLC entity of the set of RLC entities: determining a network configured offset value; determining a channel condition value; and determining an RLC entity level value based on a combination of the network configured offset value and the channel condition value. The process includes comparing the RLC entity level value for each RLC entity to a threshold value; and based on comparing the RLC entity level value to the threshold value, selecting a subset of RLC entities for PDCP duplication; and activating or deactivating PDCP duplication for the selected subset of RLC entities.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: July 16, 2024
    Assignee: Apple Inc.
    Inventors: Yujian Zhang, Junaid Ansari, Marta Martinez Tarradell
  • Publication number: 20240237082
    Abstract: Various embodiments herein are directed to using random access channel (RACH) configuration parameters to identify multiple features and combinations of features. In particular, some embodiments are directed to extensions to RACH configuration information elements (IEs) to identify multiple features and feature combinations.
    Type: Application
    Filed: September 16, 2022
    Publication date: July 11, 2024
    Inventors: Seau Sian LIM, Marta MARTINEZ TARRADELL, Yi GUO, Sudeep PALAT, Candy YIU, Yujian ZHANG, Ansab ALI, Youn Hyoung HEO
  • Patent number: 12035373
    Abstract: A method for handling a Message A physical uplink shared channel (PUSCH) transmission in a random access channel (RACH) procedure for use in fifth generation new radio (5G NR) wireless communication system includes determining that the Message A PUSCH transmission in a first step of a two-step RACH procedure overlaps with at least one other uplink physical channel transmission and transmitting at least one of the Message A PUSCH transmission or the at least one other uplink physical channel transmission in accordance with a priority rule.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: July 9, 2024
    Assignee: Apple Inc.
    Inventors: Gang Xiong, Yujian Zhang, Yushu Zhang, Sergey Sosnin, Seau S. Lim
  • Publication number: 20240214109
    Abstract: A user equipment wireless communication device in a wireless communication environment receives a signal from the network that includes a radio network temporary ID. From the radio network temporary ID, the user equipment is capable of determining whether a phase tracking reference signal is present based on the radio network temporary ID. If any of these are identified by the radio network temporary ID, then the user equipment determines that a phase tracking reference signal is present. After the user equipment has determined that the phase tracking reference signal is present, the user equipment can then determine which phase tracking reference signal antenna ports are to be used based on the values of the transmitted precoding matrix indicator value and the transmit rank indicator.
    Type: Application
    Filed: January 8, 2020
    Publication date: June 27, 2024
    Inventors: Yushu Zhang, Gang Xiong, Yujian Zhang, Guotong Wang
  • Publication number: 20240196379
    Abstract: A non-transitory computer-readable storage medium stores instructions for execution by one or more processors of user equipment (UE). The instructions cause the UE to encode a scheduling request (SR) for transmission to a base station during one of a plurality of SR occasions. The SR includes an indication based on a size of an uplink (UL) data packet. Control information received from the base station in response to the SR is decoded. The control information includes a scheduling grant based on the size of the UL data packet. The UL data packet is encoded for transmission using the scheduling grant. The UL data packet is encoded for transmission using the scheduling grant.
    Type: Application
    Filed: December 5, 2023
    Publication date: June 13, 2024
    Inventors: Fatemeh Hamidi-Sepehr, Murali Narasimha, Yujian Zhang, Mustafa Emara, Qian Li
  • Publication number: 20240188005
    Abstract: The disclosure is directed to systems and methods systems and methods for a user equipment and a power headroom report including detecting a triggering of a plurality of pathloss references from a plurality of transmission reception points (TRPs) between activation of successive power headroom reporting instances: tracking a power headroom concurrently for the plurality of TRPs during multiple transmission reception point (mTRP) operation to enable power headroom reporting for each respective TRP: tracking power headroom concurrently for each TRP of the plurality of TRPs in use during mTRP operation upon detection of the triggering of the plurality of pathloss references: and providing a power headroom determination and a power headroom report to each of the plurality of TRPs in use during mTRP operation based on the triggered plurality of pathloss references.
    Type: Application
    Filed: May 11, 2022
    Publication date: June 6, 2024
    Inventors: Dong HAN, Bishwarup MONDAL, Youn Hyoung HEO, Guotong WANG, Yujian ZHANG, Alexei DAVYDOV, Seunghee HAN
  • Patent number: 12004247
    Abstract: Disclosed are methods, systems, apparatus, and computer programs for providing a network with assistance information from a user equipment (UE) that is participating in a multimedia telephony session. In one aspect, a method includes determining a connection parameter of a multimedia telephony session between a user equipment (UE) and a remote UE. The method further includes generating assistance information based on the connection parameter. Yet further, the method include sending, using a medium access control (MAC) control element, the assistance information to an access node (AN) serving the UE.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: June 4, 2024
    Assignee: Apple Inc.
    Inventors: Jerome Parron, Yujian Zhang, Ozgur Oyman
  • Patent number: 11991087
    Abstract: An apparatus of a next generation Node B (gNB) Distributed Unit (DU) comprises one or more baseband processors to transmit one or more retransmitted Packet Data Convergence Protocol (PDCP) Protocol Data Units (PDUs) received from a gNB Central Unit (CU) to a user equipment (UE), and to feed back not only a latest, in-sequence New Radio User-plane (NR-U) Sequence Number (SN) to the CU for Release 15, but also a highest, in-sequence successfully delivered/transmitted PDCP SN, optionally, with a NR-U SN up to which the reported PDCP SN should be applied, which can provide an exact range of successfully delivered/transmitted status for retransmitted packets even in case of DU's re-ordering based on PDCP SN before transmitting to the UE. The apparatus can include a memory to store the reported PDCP SN and NR-U SN.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: May 21, 2024
    Assignee: Apple Inc.
    Inventors: Jaemin Han, Feng Yang, Yujian Zhang, Alexander Sirotkin
  • Patent number: 11984987
    Abstract: Methods, systems, and storage media are described for the prioritization of services for control and data transmission for new radio (NR) systems. In particular, some embodiments may be directed to the prioritization of hybrid automatic repeat request-acknowledgment (HARQ-ACK) transmissions. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: May 14, 2024
    Assignee: Intel Corporation
    Inventors: Toufiqul Islam, Debdeep Chatterjee, Sergey Panteleev, Fatemeh Hamidi-Sepehr, Gang Xiong, Yujian Zhang
  • Patent number: 11985618
    Abstract: Methods and apparatus are described for carrying out timing adjustments in a wireless communications network. The approach includes a user equipment (UE) that includes processor circuitry and a radio front end circuitry. The processor circuitry is configured to obtain a timing advance value for the wireless communication with a satellite base station, and to determine a transmission time for transmission of a random access channel (RACH) preamble based on the timing advance value. The radio front end circuitry transmits the random access preamble at the transmission time. Finally, the processor circuitry is further configured to receive a response to the transmitted random access preamble.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: May 14, 2024
    Assignee: Apple Inc.
    Inventors: Murali Narasimha, Youn Hyoung Heo, Yujian Zhang
  • Patent number: 11979768
    Abstract: Embodiments of a system and method for providing DRX enhancements in LTE systems are generally described herein. In some embodiments, a system control module is provided for controlling communications via a communications interface. A processor is coupled to the system control module and is arranged to implement an inactivity timer and an on-duration timer for determining an active time for monitoring subframes on the physical downlink control channel for control signals, the processor further monitoring subframes after the active time.
    Type: Grant
    Filed: September 24, 2022
    Date of Patent: May 7, 2024
    Assignee: Apple Inc.
    Inventors: Youn Hyoung Heo, Yujian Zhang, Jong-Kae Fwu
  • Publication number: 20240121663
    Abstract: The present disclosure provides various mechanisms to improve the communication of critical data, such as extended reality (XR) data, cloud gaming (CG) data, ultra-reliable low latency communications (URLLC) data, internet of things (IoT) data, and/or any other type of high priority data/traffic. The described mechanisms include enhancements to buffer status reporting mechanisms; packet, protocol data unit (PDU), and/or service data unit (SDU) discard mechanisms; mechanisms to resolve issues related to system frame number (SFN) wraparound; and network congestion detection mechanisms. Other embodiments may be described and/or claimed.
    Type: Application
    Filed: September 20, 2023
    Publication date: April 11, 2024
    Inventors: Rafia Malik, Sudeep Palat, Yujian Zhang, Marta Martinez Tarradell, Yi Guo, Youn Hyoung Heo
  • Patent number: 11950146
    Abstract: Techniques to configure a user equipment (UE) for a multi-connectivity handover with a source base station (SBS) and a target base station (TBS) include encoding a measurement report for transmission to the SBS. The measurement report is triggered based on a measurement event configured by the SBS. Radio resource control (RRC) signaling from the SBS is decoded, the RRC signaling including a handover command in response to the measurement report. The handover command includes an indication for multi-connectivity support by the SBS and the TBS during the handover. A first protocol stack associated with the SBS and a second protocol stack associated with the TBS are configured at the UE. A packet data convergence protocol (PDCP) protocol data unit (PDU) received at the UE during the handover is processed using the first protocol stack or the second protocol stack.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: April 2, 2024
    Assignee: Apple Inc.
    Inventors: Candy Yiu, Yujian Zhang, Yi Guo, Jaemin Han
  • Patent number: 11877268
    Abstract: A computer-readable storage medium that stores instructions for execution by one or more processors of a UE. The instructions to configure the UE for a streamlined transmission during low latency communications in a wireless network and to cause the UE to decode configuration signaling from a base station. The configuration signaling configures SR occasions for the UE. The UE detects availability of a UL data packet from an application layer, a size of the UL data packet being higher than a size of a TTI associated with a pre-defined slot boundary. An SR is encoded for transmission during one of the SR occasions, the SR including an indication based on the size. Control information is decoded in response to the SR, the control information including a scheduling grant based on the size of the UL data packet. The UL data packet is encoded for transmission using the scheduling grant.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: January 16, 2024
    Assignee: Intel Corporation
    Inventors: Fatemeh Hamidi-Sepehr, Murali Narasimha, Yujian Zhang, Mustafa Emara, Qian Li
  • Publication number: 20230422067
    Abstract: Technology for a user equipment (UE), operable for monitoring a physical downlink control channel (PDCCH) is disclosed. The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein the predetermined monitoring occasion has a periodicity of P slots or P symbols with an offset Os. The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein Os has an offset with respect to a first slot in subframe number zero (SFN #0). The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein P is a positive integer greater than zero.
    Type: Application
    Filed: September 14, 2023
    Publication date: December 28, 2023
    Inventors: Yongjun Kwak, Gang Xiong, Hong He, Yujian Zhang, Debdeep Chatterjee, Honglei Miao, Bharat Shrestha
  • Patent number: 11843976
    Abstract: Disclosed are apparatuses for quality of service (QoS) flow to data radio bearer (DRB) mapping override bits. An apparatus of a user equipment (UE), includes one or more data storage devices, and one or more processors operably coupled to the one or more data storage devices. The one or more data storage devices are configured to store data corresponding to mapping of QoS flows to data radio bearers. The one or more processors are configured to map one or more QoS flows to a DRB in an uplink (UL) responsive to receipt, by the UE from a cellular base station, of a user plane packet in a downlink (DL) through the DRB if an override bit of the user plane packet indicates that reflective mapping should apply.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: December 12, 2023
    Assignee: APPLE INC.
    Inventors: Sudeep Palat, Richard Burbidge, Yujian Zhang, Alexandre Saso Stojanovski, Jerome Parron
  • Publication number: 20230397276
    Abstract: Disclosed are methods, systems, apparatus, and computer programs for providing a network with assistance information from a user equipment (UE) that is participating in a multimedia telephony session. In one aspect, a method includes determining a connection parameter of a multimedia telephony session between a user equipment (UE) and a remote UE. The method further includes generating assistance information based on the connection parameter. Yet further, the method include sending, using a medium access control (MAC) control element, the assistance information to an access node (AN) serving the UE.
    Type: Application
    Filed: August 16, 2023
    Publication date: December 7, 2023
    Inventors: Jerome Parron, Yujian Zhang, Ozgur Oyman
  • Publication number: 20230389077
    Abstract: Some demonstrative embodiments include devices, systems and/or methods of communication over common control channels. For example, an apparatus may include logic and circuitry configured to cause a User Equipment (UE) to determine a selected Common Control Channel (CCCH) message configuration from a first predefined message configuration and a second predefined message configuration, the first predefined message configuration having a first predefined message bit-size, the second predefined message configuration having a second predefined message bit-size; to generate an Uplink (UL) CCCH message according to the selected CCCH message configuration, the UL CCCH message comprising a Medium Access Control (MAC) header comprising a Logical Channel Identify (ID) (LCID) field having a value corresponding to the selected CCCH message configuration; and to transmit the UL CCCH message to a Next Generation Node B (gNB) over a logical channel corresponding to the selected CCCH message configuration.
    Type: Application
    Filed: August 14, 2023
    Publication date: November 30, 2023
    Applicant: Apple Inc.
    Inventors: Sudeep PALAT, Yi GUO, Yujian ZHANG, Seau Sian LIM
  • Patent number: 11805432
    Abstract: Technology for a user equipment (UE), operable for monitoring a physical downlink control channel (PDCCH) is disclosed. The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein the predetermined monitoring occasion has a periodicity of P slots or P symbols with an offset Os. The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein Os has an offset with respect to a first slot in subframe number zero (SFN #0). The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein P is a positive integer greater than zero.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: October 31, 2023
    Assignee: APPLE INC.
    Inventors: Yongjun Kwak, Gang Xiong, Hong He, Yujian Zhang, Debdeep Chatterjee, Honglei Miao, Bharat Shrestha
  • Patent number: 11792302
    Abstract: Disclosed are methods, systems, apparatus, and computer programs for compressing an Ethernet packet. In one aspect, a method involves mapping a portion of the Ethernet packet to a connection identity to compress the Ethernet packet. Additionally, the method involves encoding, in a user plane protocol stack layer, the connection identity in a data structure for transmission.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: October 17, 2023
    Assignee: Apple Inc.
    Inventors: Yujian Zhang, Youn Hyoung Heo, Marta Martinez Tarradell, Sudeep Palat, Junaid Ansari