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).

  • POWER HEADROOM REPORTING WITH DUAL CONNECTIVITY
    Publication number: 20200107278
    Abstract: Embodiments described herein relate generally to a communication between a user equipment (“UE”) and a plurality of evolved Node Bs (“eNBs”). A UE may be adapted to operate in a dual connected mode on respective wireless cells provided by first and second eNBs. The UE may be adapted to estimate respective power headroom (“PHR”) values associated with simultaneous operation on the first and second wireless cells. The UE may cause the first and second PHR estimates to be transmitted to both the first and second eNBs. The first and second eNBs may use these estimates to compute respective uplink transmission powers for the UE. Other embodiments may be described and/or claimed.
    Type: Application
    Filed: October 17, 2018
    Publication date: April 2, 2020
    Inventors: KATHIRAVETPILLAI SIVANESAN, ALI T. KOC, SATISH C. JHA, RATH VANNITHAMBY, YUJIAN ZHANG
  • One measurement gap in asynchronous dual connectivity
    Patent number: 10602511
    Abstract: In an embodiment, an apparatus to be employed in a user equipment (UE) is described. The apparatus includes configuration circuitry operable to determine, based on one or more configuration information messages, a measurement gap for a master evolved Node B (MeNB) that is operable to provide a master cell group (MCG) that is asynchronous with a secondary cell group (SCG) of a secondary evolved Node B (SeNB), wherein subframe boundaries of the MCG are different from subframe boundaries of the SCG; and radio frequency (RF) control circuitry operable to cause RF circuitry to be tuned, at a beginning of the measurement gap based on a subframe boundary of the MCG, to start inter-frequency measurements, wherein the RF circuitry is to be used to transmit or receive data in a serving cell of the MCG and in a serving cell of the SCG. Other embodiments are also described and claimed.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: March 24, 2020
    Assignee: Intel IP Corporation
    Inventors: Rui Huang, Yang Tang, Candy Yiu, Yujian Zhang
  • Activation of secondary cell containing bandwidth parts
    Patent number: 10602506
    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: September 26, 2018
    Date of Patent: March 24, 2020
    Assignee: Apple Inc.
    Inventors: Yujian Zhang, Jeongho Jeon, Youn Hyoung Heo, Candy Yiu, Bharat Shrestha
  • RE-TRANSMISSION OF PDCP PDUS BY CENTRALIZED NODES OF A RAN ARCHITECTURE
    Publication number: 20200029390
    Abstract: A centralized RAN architecture that includes lower layer transmission nodes (referred to as distributed units (DUs) herein) that connect to an upper layer RAN node (referred to as a centralized unit (CU) herein). A centralized RAN architecture may include a functional split, between the CU and DU, corresponding to the Packet Data Convergence Protocol (PDCP) and Radio Link Control (RLC) layers. In one embodiment, a CU may store copies of downlink PDCP PDUs that are transmitted to a first DU. The CU may retransmit, to a second DU, those of the PDCP PDUs which were previously transmitted to the source DU but have not been acknowledged as successfully delivered by the source DU.
    Type: Application
    Filed: March 16, 2018
    Publication date: January 23, 2020
    Inventors: Jaemin Han, Yujian Zhang, Alexander Sirotkin, Xu Zhang, Yifan Yu, Min Huang, Feng Yang, Sudeep Palat
  • ENHANCED NODE B, USER EQUIPMENT AND METHODS FOR DISCONTINUOUS RECEPTION IN INTER-ENB CARRIER AGGREGATION
    Publication number: 20200022210
    Abstract: Embodiments of user equipment (UE) and methods for enhanced discontinuous reception (DRX) operations for inter eNB carrier aggregation (CA) in an LTE network are generally described herein. In some embodiments, a UE is configured to be served by multiple serving cells. The first set of the serving cells may be associated with a first eNB and a second set of serving cells may be associated with a second eNB. In these embodiments, DRX operations may be performed independently in multiple serving cells belonging to the different eNBs. Other embodiments for enhanced DRX operations are also described.
    Type: Application
    Filed: July 23, 2019
    Publication date: January 16, 2020
    Inventors: Youn Hyoung Heo, Yujian Zhang
  • METHODS TO DETERMINE PARAMETERS RELATED TO PHASE TRACKING REFERENCE SIGNALS (PT-RS) BASED ON A TYPE OF RADIO NETWORK TEMPORARY IDENTIFIER (RNTI)
    Publication number: 20200008270
    Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The UE may receive a physical downlink control channel (PDCCH) that schedules a physical downlink shared channel (PDSCH), wherein a cyclic redundancy check (CRC) of the PDCCH is scrambled by a radio network temporary identifier (RNTI). In some cases, if the RNTI that scrambles the PDCCH is a modulation coding scheme (MCS) cell RNTI (MCS-C-RNTI), cell RNTI (C-RNTI), or a configured scheduling RNTI (CS-RNTI), the UE may determine that: one or more PT-RSs are present in the PDSCH, a time density parameter of the PT-RSs is equal to one, and a frequency density of the PT-RSs is equal to two.
    Type: Application
    Filed: July 12, 2019
    Publication date: January 2, 2020
    Inventors: Yushu Zhang, Gang Xiong, Yujian Zhang, Guotong Wang
  • Security key refresh for dual connectivity
    Patent number: 10523286
    Abstract: Embodiments have a master eNB with a control plane and optional data plane to user equipment and a secondary eNB with a data plane to the user equipment. The user equipment thus uses both the master eNB and the secondary eNB for data communications while receiving control information from only the master eNB. The master eNB and secondary eNB are connected with an X2 interface. When the secondary eNB desires to refresh its security key, it informs the master eNB using the X2 interface. The master eNB then uses its control plane with the user equipment to initiate a security key refresh for the secondary eNB.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: December 31, 2019
    Assignee: Intel IP Corporation
    Inventors: Yujian Zhang, Youn Hyoung Heo, Achim Luft
  • HANDLING MULTIPLE SR CONFIGURATIONS AND CORRESPONDING UL GRANTS
    Publication number: 20190387578
    Abstract: A User Equipment (UE) and a Radio Access Network (RAN) node may be configured to use multiple Scheduling Request (SR) configurations. A SR configuration may indicate to radio resources to be used to communicate a SR to the RAN node. The RAN node may provide UE with information associating logical channels to SR configurations. When the UE has data to transmit to the RAN node, the UE may determine the logical channel corresponding to the data, determine the SR configuration corresponding to the logical channel, and communicate a SR to the RAN node in accordance with the SR configuration. Upon receiving the SR, the RAN node determine the SR configuration used to transmit the SR and in turn determine the logical channel for which the SR was transmitted. The RAN node may then transmit an Uplink (UL) grant for the logical channel to the UE.
    Type: Application
    Filed: June 15, 2018
    Publication date: December 19, 2019
    Inventors: Bharat Shrestha, Gang Xiong, Yujian Zhang, Debdeep Chatterjee, Sergey Panteleev, Joonyoung Cho, Youn Hyoung Heo
  • SYSTEMS, METHODS AND DEVICES FOR MEASUREMENT CONFIGURATION BY A SECONDARY NODE IN EN-DC
    Publication number: 20190387424
    Abstract: A secondary node (SN) in evolved universal mobile telecommunications system terrestrial radio access network new radio-dual connectivity (EN-DC) with a master node (MN) can directly provide measurement configuration and receive measurement reports from a UE and/or coordinate measurement configuration and reporting with the MN. For example, only one measurement object configuration is allowed for a frequency, but both MN and SN can provide measurement reporting configurations on the same measurement object. The UE can send measurement reports for the same measurement object to both MN and SN or the node that configured the reporting criteria configuration. In another embodiment, only one node provides the reporting configuration but configures the UE to provide reporting to one node or both MN and SN.
    Type: Application
    Filed: March 20, 2018
    Publication date: December 19, 2019
    Applicant: INTEL CORPORATION
    Inventors: Candy Yiu, Sudeep K. Palat, Seau S. Lim, Yujian Zhang
  • User equipment and methods of bearer operation for carrier aggregation
    Patent number: 10512095
    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 31, 2018
    Date of Patent: December 17, 2019
    Assignee: Intel IP Corporation
    Inventors: Yujian Zhang, Youn Hyoung Heo
  • UPLINK CHANNEL TRANSMISSION IN DUAL CONNECTIVITY
    Publication number: 20190364559
    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: Application
    Filed: May 14, 2019
    Publication date: November 28, 2019
    Inventors: Seunghee Han, Youn Hyoung Heo, Yujian Zhang, Hong He
  • USER EQUIPMENT AND METHODS OF BEARER OPERATION FOR CARRIER AGGREGATION
    Publication number: 20190364575
    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 8, 2019
    Publication date: November 28, 2019
    Inventors: Yujian Zhang, Youn Hyoung Heo
  • Communication of security key information
    Patent number: 10492214
    Abstract: Technology for a first evolved node B (eNB) operable to support dual connectivity with a second eNB is disclosed. The first eNB can process a second eNB counter check request message received from second eNB SeNB. The first eNB can process one or more radio resource control (RRC) messages for transmission to a user equipment (UE) in response to receiving the counter check request message from the second eNB. The one or more RRC messages can be transmitted to the UE to verify a COUNT value for bearers established in the second eNB.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: November 26, 2019
    Assignee: Intel IP Corporation
    Inventors: Youn Hyoung Heo, Yujian Zhang
  • QUALITY OF SERVICE FLOW TO DATA RADIO BEARER MAPPING OVERRIDE BIT
    Publication number: 20190357086
    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: Application
    Filed: February 2, 2018
    Publication date: November 21, 2019
    Applicant: INTEL IP CORPORATION
    Inventors: Sudeep Palat, Richard Burbidge, Yujian Zhang, Alexandre Saso Stojanovski, Jerome Parron
  • POWER HEADROOM REPORTING WITH CHANNEL SELECTION
    Publication number: 20190349869
    Abstract: Systems, apparatus, user equipment (UE), evolved node B (eNB), and methods are described for generating an extended power headroom report (ePHR) based on an uncertainty associated with a physical downlink control channel communication granting an uplink grant for a physical uplink shared channel communication when the system is configured for simultaneous physical uplink shared channel and physical uplink control channel communications. Some embodiments are structured to generate the ePHR using a type 2 report regardless of the uncertainty associated with the ePHR, while other embodiments generate the ePHR using a reference format. In some embodiments, a UE communicates a timing field with a UE capability communication indicating whether the UE meets timing requirements to avoid uncertainty in ePHR communications.
    Type: Application
    Filed: January 9, 2019
    Publication date: November 14, 2019
    Inventors: Narayan Vishwanathan, Yujian Zhang, Hong He, Seunghee Han, Youn Hyoung Heo
  • Measurement gap repetition patterns for inter-frequency offloading in heterogeneous wireless networks
    Patent number: 10470068
    Abstract: An embodiment for user equipment that receives a plurality of measurement gap repetition patterns from a network. Each measurement gap repetition pattern may be assigned to a different frequency of the network. The plurality of measurement gap repetition patterns may include skipping measurement patterns. Further embodiments may include the user equipment receiving a repetition period in a measurement object frame or receiving a plurality of measurement gap repetition patterns in which the measurement gaps are non-colliding with measurement gaps of other repetition patterns assigned to the user equipment.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: November 5, 2019
    Assignee: Intel IP Corporation
    Inventors: Candy Yiu, Yang Tang, Yujian Zhang, Rui Huang
  • SIGNALING FOR RESOURCE ALLOCATION AND SCHEDULING IN 5G-NR INTEGRATED ACCESS AND BACKHAUL
    Publication number: 20190334600
    Abstract: Embodiments of apparatus and methods for signaling for resource allocation and scheduling in 5G-NR integrated access and backhaul are generally described herein. In some embodiments, User Equipment configured for reporting a channel quality indicator (CQI) index in a channel state information (CSI) reference resource assumes a physical resource block (PRB) bundling size of two PRBs to derive the CQI index.
    Type: Application
    Filed: November 13, 2018
    Publication date: October 31, 2019
    Inventors: Alexander Sirotkin, Alexei Davydov, Andrey Chervyakov, Anthony Lee, Avik Sengupta, Bharat Shrestha, Candy Yiu, Chang Hong Shan, Dae Won Lee, Dawei Ying, Debdeep Chatterjee, Farid Adrangi, Gang Xiong, Geng Wu, Gregory Morozov, Hassan Ghozlan, Hong He, Honglei Miao, Hua Li, Jaemin Han, Jeongho Jeon, Jie Cui, Jing Zhu, Joey Chou, Joonbeom Kim, Joonyoung Cho, Kathiravetpillai Sivanesan, Lu Lu, May Wu, Naveen Palle, Puneet Jain, Qian Li, Richard C. Burbidge, Robert Zaus, Rui Huang, Satish Chandra Jha, Seau S. Lim, Sergey Panteleev, Song Noh, Yaser M. Fouad, Yi Guo, Yizhi Yao, Yongjun Kwak, Youn Hyoung Heo, Yuhan Zhou, Yujian Zhang, Yushu Zhang
  • Seamless mobility for 5G and LTE systems and devices
    Patent number: 10462723
    Abstract: User equipment (UE), an enhanced NodeB (eNB) and method of reducing handover latency are generally described. The UE may transmit measurement feedback to the eNB based on control signals. The UE may receive a reconfiguration message from the eNB or another eNB to the UE is attached. The reconfiguration message may contain reconfiguration information indicating whether or not a physical layer or layer 2 of the UE is to be reconfigured and/or a security key is to be updated. The reconfiguration information may be dependent on whether the handover is between eNBs controlled by a same entity and/or whether the handover comprises an intra-frequency transition. The UE or eNB may initiate handover of the UE. During handover the UE may avoid physical layer or layer 2 reconfiguration or the security key update. The security key and data for the UE may be provided directly between the eNBs.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: October 29, 2019
    Assignee: Intel IP Corporation
    Inventors: Yujian Zhang, Mo-Han Fong, Pingping Zong, Alexei Vladimirovich Davydov
  • APPARATUSES TO SWITCH BETWEEN LTE RAT AND NR RAT DURING TRANSITION FROM INACTIVE STATE TO ACTIVE STATE
    Publication number: 20190320483
    Abstract: Techniques described herein may be used to enable User Equipment (UE) to switch between Radio Access Technologies (RATs) while transitioning from an inactive state to an active state. For example. a UE may connect to a base station via one type of RAT (e.g., Long-Term Evolution (LTE) RAT), enter an inactive state, and later, while transitioning from the inactive state to an active state, connect to another base station via another type of RAT (e.g., a New Radio (NR) or 5th Generation (5G) RAT). The UE may transition from one RAT to another RAT without increasing signaling between the UE and the network beyond minimal signaling involved in a transition of the UE from the inactive state to an active state. The network may further minimize signaling by determining and communicating minimized connection configuration information to the UE.
    Type: Application
    Filed: December 20, 2017
    Publication date: October 17, 2019
    Inventors: Sudeep Palat, Richard Burbidge, Yujian Zhang, Candy Yiu, Marta Martinez Tarradell, Youn Hyoung Heo, Alexandre Stojanovski, Sangeetha Bangolae
  • Cooler box
    Patent number: D872541
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: January 14, 2020
    Assignee: Heshan Aohong Industry Co., Ltd.
    Inventor: Yujian Zhang