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).

  • 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
  • Patent number: 11778529
    Abstract: Systems, methods, and devices are provided to: perform packet data convergence protocol (PDCP) deciphering of the packets to store deciphered packets in a common buffer; perform PDCP reordering of the deciphered packets in the common buffer to generated a stream or reordered packets; perform robust header compression (ROHC) decompression on the stream of reordered packets; and determine, based on a packet indication, to reset the ROHC decompression, wherein the packet indication comprises a single bit in a PDCP header set to indicate a start of ROHC reset based on a path switch during a handover from a source cell to a target cell.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: October 3, 2023
    Assignee: APPLE INC.
    Inventors: Candy Yiu, Yujian Zhang, Yi Guo, Sudeep Palat
  • Publication number: 20230309137
    Abstract: Embodiments of a User Equipment (UE) to support dual-connectivity with a Master Evolved Node-B (MeNB) and a Secondary eNB (SeNB) are disclosed herein. The UE may receive downlink traffic packets from the MeNB and from the SeNB as part of a split data radio bearer (DRB). At least a portion of control functionality for the split DRB may be performed at each of the MeNB and the SeNB. The UE may receive an uplink eNB indicator for an uplink eNB to which the UE is to transmit uplink traffic packets as part of the split DRB. Based at least partly on the uplink eNB indicator, the UE may transmit uplink traffic packets to the uplink eNB as part of the split DRB. The uplink eNB may be selected from a group that includes the MeNB and the SeNB.
    Type: Application
    Filed: May 26, 2023
    Publication date: September 28, 2023
    Inventors: Yujian Zhang, Youn Hyoung Heo
  • Patent number: 11770752
    Abstract: Systems and methods of reducing control plane latency in a 5G IAB network are described. SRs transmitted between nodes indicate that a control plane PDU is to be transmitted. The SRs use periodic resources or OCCs reserved for control plane signaling and are initiated by an RRC message or RACH from the UE. The SRs are initiated if the LCD field in the MAC sub header of the RRC message indicates the CCCH or the DCCH logical channel. If the PDU is available after the original resource, a resource is used that is provided via another grant, which is periodically provided or automatically initiated due to failure to transmit on the original grant. The SR or RRC message can also specify a delayed timeslot for the grant. For contention-based procedures the RACH preamble is randomly selected or selected from among a set of RACH preambles assigned for RRC procedures.
    Type: Grant
    Filed: October 3, 2022
    Date of Patent: September 26, 2023
    Assignee: Apple Inc.
    Inventors: Yujian Zhang, Qian Li, Youn Hyoung Heo, Sudeep K. Palat, Murali Narasimha
  • Patent number: 11765729
    Abstract: Technology for dual connectivity is disclosed. A user equipment (UE) can identify a first physical channel that includes a first uplink control information (UCI) and a second physical channel that includes a second UCI. The UE can select a priority level for the first physical channel and a priority level for the second physical channel. The UE can apply power scaling to a first physical channel transmission or a second physical channel transmission if a total transmit power of the UE would exceed a specific value during a period of time. The UE can scale a transmit power for the second physical channel if the priority level for the first physical channel is higher than the priority level for the second physical channel depending on a type of first UCI and a type of second UCI.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: September 19, 2023
    Assignee: APPLE INC.
    Inventors: Seunghee Han, Youn Hyoung Heo, Yujian Zhang, Hong He
  • Patent number: 11758615
    Abstract: Embodiments of a User Equipment (UE), Evolved Node-B (eNB) and methods for communication in accordance with a packet convergence and link control (PCLC) layer are generally described herein. The UE may receive, from a Fifth Generation (5G) eNB, a first group of medium access control (MAC) protocol data units (PDUs) that include PCLC PDUs. In accordance with PCLC sequence numbers (SNs), the UE may reorder the PCLC PDUs and may decipher the PCLC PDUs. The UE may receive, from a legacy eNB, a second group of MAC PDUs that include packet data convergence protocol (PDCP) PDUs encapsulated in radio link control (RLC) PDUs. The UE may reorder the RLC PDUs based on RLC SNs and may decipher the RLC PDUs based on PDCP SNs that are exclusive to the RLC SNs.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: September 12, 2023
    Assignee: Intel Corporation
    Inventors: Yujian Zhang, Mo-Han Fong, Youn Hyoung Heo, Richard C. Burbidge, Umesh Phuyal, Candy Yiu, Hong He, Sudeep K. Palat
  • Patent number: 11751216
    Abstract: 5G methods and architectures to determine active SCells and their bandwidth parts (BWP) used in carrier aggregation (CA) are disclosed in which activating a BWP for an active SCell is performed initially according to a default value provided in initial radio resource control (RRC) messaging. After initialization, SCells and the SCell BWPs used by the user equipment (UE) are activated by RRC messaging, downlink control information (DCI) or dedicated medium access control (MAC) control elements (MAC CEs) with the initial BWP used for an activated SCell being a default value provided during initialization.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: September 5, 2023
    Assignee: Apple Inc.
    Inventors: Yujian Zhang, Jeongho Jeon, Youn Hyoung Heo, Candy Yiu, Bharat Shrestha
  • Publication number: 20230263742
    Abstract: The invention provides a lipid of Formula (I) and nanoparticle compositions containing the same. Nanoparticle compositions including therapeutic and/or prophylactics such as RNA are useful in the delivery of therapeutic and/or prophylactics to mammalian cells or organs to, for example, regulate polypeptide, protein, or gene expression.
    Type: Application
    Filed: May 5, 2022
    Publication date: August 24, 2023
    Inventors: Yunsong CAI, Lei HUANG, Na LIU, Yu HANG, Weiguo YAO, Yujian ZHANG, Hangwen LI, Haifa SHEN
  • Patent number: 11737138
    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: Grant
    Filed: June 20, 2019
    Date of Patent: August 22, 2023
    Assignee: Apple Inc.
    Inventors: Sudeep Palat, Yi Guo, Yujian Zhang, Seau Sian Lim
  • Patent number: 11729658
    Abstract: Systems and methods of providing feedback when a specific PDU is successfully delivered or transmitted are described. The node hosting PDCP entity indicates triggering of a DDDS frame from the remote corresponding node. Rather than immediately triggering transmission of a DDDS frame, the node hosting PDCP entity indicates triggering based on successful delivery of a PDU having a specific SN, as long as in-sequence delivery or transmission of PDUs up to the specific SN was successful. The DDDS frame is transmitted once the corresponding node determines that the PDU having the SN was successfully delivered or transmitted. After reporting by the DDDS frame, the QoS flow associated with the PDUs is remapped from a source DRB to a target DRB.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: August 15, 2023
    Assignee: Apple Inc.
    Inventors: Jaemin Han, Yujian Zhang, Sudeep Palat, Alexander Sirotkin
  • Patent number: 11706793
    Abstract: Embodiments of a User Equipment (UE) to support dual-connectivity with a Master Evolved Node-B (MeNB) and a Secondary eNB (SeNB) are disclosed herein. The UE may receive downlink traffic packets from the MeNB and from the SeNB as part of a split data radio bearer (DRB). At least a portion of control functionality for the split DRB may be performed at each of the MeNB and the SeNB. The UE may receive an uplink eNB indicator for an uplink eNB to which the UE is to transmit uplink traffic packets as part of the split DRB. Based at least partly on the uplink eNB indicator, the UE may transmit uplink traffic packets to the uplink eNB as part of the split DRB. The uplink eNB may be selected from a group that includes the MeNB and the SeNB.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: July 18, 2023
    Assignee: Apple Inc.
    Inventors: Yujian Zhang, Youn Hyoung Heo
  • Publication number: 20230173488
    Abstract: A mixer for generating particles, comprising a first mixing unit, wherein the first mixing unit comprises a first channel (702) and a second channel (701), the first channel (702) comprises a rectilinear channel, the second channel (701) comprises a curvilinear channel. The mixer is particularly suitable for producing nanoparticles, and the mixing efficiency can be improved. A microfluidic hybrid chip cartridge prepared by the mixer is also provided.
    Type: Application
    Filed: January 12, 2021
    Publication date: June 8, 2023
    Inventors: Lei HUANG, Yujian ZHANG, Hang Wen LI, Hai YU